TER SL000164 Upper Cover for 4 Buttons

The TER SL000164 Upper Cover for 4 Buttons is a replacement upper enclosure component designed specifically for the standard 4-button TER NPA pendant control station. Supplied with tightening rubber, the SL000164 provides a manufacturer-specific solution for the maintenance, repair and refurbishment of compatible NPA pendant controls used throughout industrial lifting, crane, hoist, winch and machinery-control applications.

Industrial pendant control stations are exposed to continual handling and can operate in demanding environments where impact, vibration, dust, moisture and general mechanical wear gradually affect enclosure condition. Where the upper cover of a 4-button TER NPA becomes cracked, damaged or unsuitable for continued use, the SL000164 allows the affected enclosure section to be replaced without automatically requiring replacement of the entire pendant control station.

TER identifies SL000164 specifically as the upper cover with tightening rubber for the 4-button standard NPA configuration. Correct identification is important because the NPA family is available in several sizes and uses dedicated enclosure components corresponding to each pendant configuration.

TER Part Number SL000164

The manufacturer reference for this replacement component is SL000164.

Using the complete TER part number when ordering helps distinguish the four-button upper cover from similar enclosure components intended for other NPA sizes or different TER pendant families.

Maintenance departments, crane service organisations, hoist specialists, OEMs and industrial equipment operators can record SL000164 within their spare-parts systems wherever compatible 4-button TER NPA pendant control stations are installed.

Upper Cover for the 4-Button TER NPA

The SL000164 forms the upper enclosure section of the standard 4-button TER NPA pendant control station.

As part of the complete pendant housing, the upper cover contributes to the mechanical enclosure surrounding internal wiring, switching components, actuator mechanisms and associated control elements.

Maintaining this component in sound condition is therefore an important part of maintaining the complete NPA pendant assembly.

Supplied with Tightening Rubber

TER specifies the SL000164 as an upper cover supplied with tightening rubber.

The supplied tightening rubber provides the appropriate component for reassembling the upper enclosure rather than requiring technicians to reuse an aged, damaged or contaminated part removed from the existing pendant.

Correct condition and positioning of this component contribute to the intended assembly of the complete NPA enclosure.

Designed Specifically for the Standard TER NPA

The SL000164 is intended for the standard TER NPA pendant control station in its 4-button configuration.

The NPA is designed for auxiliary control of industrial machinery and is available in a range of actuator counts to suit different control requirements.

For the standard 4-button NPA, SL000164 provides the corresponding replacement upper cover.

Correct Pendant Identification Before Ordering

Before ordering SL000164, the existing control station should be positively identified as a standard 4-button TER NPA.

The pendant family, number of control positions and available equipment documentation should be checked wherever possible.

This is particularly important at sites operating several TER pendant models because enclosure components should not be selected solely according to appearance.

Four-Button NPA Configuration

The 4-button NPA provides a compact operator interface suitable for applications requiring several local machine commands without the size of a larger pendant configuration.

The exact function assigned to each actuator depends on the machine, electrical system and pendant configuration specified by the equipment designer.

The SL000164 does not determine these electrical functions; it provides the corresponding upper enclosure component for the four-button standard NPA housing.

Auxiliary Control of Industrial Machinery

The TER NPA is an auxiliary pendant control station designed for industrial machinery applications.

Depending on the selected configuration, the NPA can incorporate one-, two- or three-speed switches with NO and/or NC contacts.

The SL000164 supports maintenance of the enclosure surrounding these control components on the compatible 4-button version.

Replacement Upper Cover for Existing TER Equipment

The SL000164 is particularly useful where the upper enclosure of an existing 4-button NPA has sustained mechanical damage while the remainder of the pendant remains suitable for continued service.

Instead of automatically replacing the complete control station, technicians can inspect the pendant and determine whether targeted replacement of the upper cover provides an appropriate repair.

This modular maintenance approach can allow suitable existing actuators, contact elements, wiring and other pendant components to remain in service.

Supporting NPA Pendant Refurbishment

Industrial pendant control stations can remain in operation for extended periods when correctly maintained.

During this service life, external enclosure components can experience greater mechanical wear than protected internal parts because the housing is directly exposed to everyday handling and surrounding operating conditions.

The availability of SL000164 supports refurbishment of compatible 4-button NPA pendants where the upper enclosure requires replacement.

Mechanical Protection for Internal Components

The upper cover forms part of the complete enclosure surrounding the internal pendant components.

Conductors, terminals, contact elements and other electrical parts should remain mechanically protected during normal machine operation.

Cracking or substantial damage to the upper enclosure should therefore be assessed as a maintenance issue rather than treated purely as cosmetic damage.

Damage from Everyday Industrial Use

Pendant control stations can be handled repeatedly throughout every operating shift.

They may be carried between working positions, suspended alongside lifting equipment, moved while an operator follows a load or repeatedly returned to a storage position.

Over time, this regular handling can contribute to scratches, impact marks, worn enclosure joints or more substantial housing damage.

Accidental Pendant Drops

Accidental dropping is one potential cause of upper cover damage.

Impact with a concrete floor, platform or other hard surface can cause cracking, deformation or damage around enclosure edges and fastening areas.

After a significant drop, the complete NPA pendant should be inspected because damage may extend beyond the SL000164 upper cover.

Impact with Machinery and Structures

A suspended pendant can swing into machinery, crane structures, columns, loads or surrounding equipment during operation.

Repeated contact can gradually weaken the enclosure even where an individual impact does not immediately produce visible cracking.

Routine inspection can help identify developing damage before it progresses into a more substantial enclosure failure.

Cracked Upper Covers

Cracking is a clear indication that the upper enclosure requires careful assessment.

Cracks can develop around corners, enclosure edges, mating surfaces or areas exposed to repeated mechanical stress.

Where the damage is confined to the upper cover of a compatible standard 4-button NPA, SL000164 provides the corresponding TER replacement reference.

Inspecting the Upper Cover After Impact

Following impact, the upper enclosure should be checked for visible cracking, distortion and damage around the enclosure joints.

Even where the pendant remains operational, significant mechanical damage should not be ignored.

Continuing to operate a severely damaged housing can expose the pendant to further deterioration and may complicate future maintenance.

Inspecting the Enclosure Mating Surfaces

The surfaces where the SL000164 upper cover meets the adjoining NPA enclosure section should remain clean, correctly aligned and free from significant damage.

Dirt, deformation or damaged edges can interfere with correct reassembly.

These areas should therefore be inspected carefully before the replacement upper cover is installed.

Importance of the Tightening Rubber

The tightening rubber supplied with the SL000164 forms part of the intended upper enclosure assembly.

During installation it should be positioned correctly and checked to ensure it is not twisted, pinched, contaminated or damaged.

Correct positioning contributes to the intended fit between the upper cover and the adjoining enclosure section.

Replacing an Aged Tightening Rubber

Where an older NPA pendant is being refurbished, transferring a deteriorated tightening rubber from the damaged upper cover may compromise the quality of the reassembly.

The tightening rubber supplied with SL000164 allows this component to be renewed at the same time as the upper enclosure.

This provides a more complete repair than replacing the visible damaged housing while retaining a worn tightening component.

Matching 4-Button NPA Enclosure Components

The standard 4-button NPA uses dedicated enclosure components that work together to form the complete pendant housing.

SL000164 is the upper cover with tightening rubber, while the corresponding central section and lower enclosure are separate TER replacement components.

Correctly identifying each component is important when repairing a pendant that has sustained damage across more than one housing section.

PRSL5816PI Central Section

For the standard 4-button TER NPA, the corresponding central enclosure section is TER PRSL5816PI.

This central section should be inspected whenever significant impact has damaged the upper cover.

A replacement SL000164 should not be expected to compensate for cracking, distortion or other damage in the adjoining central section.

SL000167R Lower Enclosure

The corresponding lower enclosure for the standard 4-button NPA is TER SL000167R.

The SL000167R lower enclosure is supplied with tightening rubber and screws and forms the lower section of the same four-button pendant housing.

Where the pendant has experienced significant impact, both upper and lower enclosure components should be checked as part of the overall condition assessment.

Modular TER NPA Enclosure Construction

The availability of separate upper, central and lower enclosure components supports targeted maintenance of the TER NPA pendant.

Instead of treating the complete housing as a single disposable assembly, maintenance personnel can identify the affected section and determine whether individual replacement is technically appropriate.

The SL000164 provides the dedicated upper enclosure component for the standard 4-button NPA configuration.

Maintaining the Existing Operator Interface

Using the correct replacement upper cover helps preserve the established pendant arrangement already familiar to operators.

This can be particularly valuable on existing cranes, hoists and industrial machinery where control positions, symbols, machine documentation and operating procedures are based around the installed NPA.

A like-for-like enclosure repair can maintain the existing interface without unnecessarily changing the control configuration.

Preserving Existing Internal Components

Where internal switching components and wiring remain in satisfactory condition, replacing the SL000164 can allow these serviceable components to remain in use.

Care is still required during disassembly and reassembly because internal conductors and contact elements can be positioned close to the enclosure surfaces.

The complete internal assembly should be inspected before the new upper cover is fitted.

Safe Isolation Before Maintenance

The associated machine should be safely isolated before the NPA pendant is opened or enclosure components are removed.

Pendant controls can command lifting, travelling and other machine movements, so maintenance must account for electrical hazards and the possibility of unexpected equipment operation.

Work should be undertaken by appropriately competent personnel following applicable workplace and machine-isolation procedures.

Preventing Unexpected Equipment Operation

Maintenance should not begin while the pendant remains capable of initiating machine movement.

Appropriate electrical isolation and lockout procedures should be completed before the housing is opened.

This provides a safer environment for inspecting internal components and replacing the SL000164 upper cover.

Opening the Existing NPA Pendant

Once the equipment has been safely isolated, the existing upper cover can be removed in accordance with the applicable NPA maintenance procedure.

The enclosure should be opened carefully because conductors, switching components and cable-entry elements are contained within the pendant.

If the housing does not separate normally, the cause should be investigated rather than applying unnecessary force.

Recording the Existing Wiring Arrangement

Before conductors or internal components are moved, technicians can record their existing arrangement using photographs, wire identification and applicable machine documentation.

This provides a useful reference during reassembly.

A four-button pendant can contain multiple control circuits, making clear identification valuable during maintenance.

Inspecting Internal Wiring

Opening the pendant to replace the upper cover provides an opportunity to inspect accessible internal wiring.

Conductors should be checked for damaged insulation, loose connections, excessive strain or other visible deterioration.

Electrical defects identified during refurbishment should be corrected before the pendant is reassembled.

Inspecting Electrical Terminals

Accessible terminals should remain mechanically secure and free from obvious overheating, corrosion or damage.

A loose electrical connection can produce intermittent machine operation independently of the condition of the enclosure.

Any abnormal terminal condition should therefore be investigated before recommissioning.

Inspecting the Four Control Positions

The four installed control positions should be inspected as part of the refurbishment process.

Actuators should remain securely mounted and operate according to their intended mechanical action.

Any control showing abnormal movement, excessive wear or physical damage should receive appropriate maintenance before the pendant returns to service.

Inspecting Pushbutton Operation

Pushbuttons should move consistently and return according to their intended design.

Sticking, binding or excessive movement can indicate actuator wear, contamination or a mounting issue.

Replacing the SL000164 upper cover does not correct an unrelated pushbutton fault, so these components should be assessed independently.

One-, Two- and Three-Speed Control Options

The standard TER NPA can be configured with one-, two- or three-speed switches depending on the requirements of the machine-control system.

Where multi-speed controls are installed, each mechanical stage should operate consistently.

All corresponding machine functions should be verified during functional testing after maintenance.

Inspecting Contact Elements

The contact elements associated with the pendant controls should remain secure and suitable for continued operation.

Where machine commands have become intermittent, the contact elements, wiring and terminals should form part of the diagnostic process.

All required electrical functions should be tested after reassembly.

Emergency-Stop Configurations

The TER NPA can be configured with an emergency-stop mushroom pushbutton conforming to ISO 13850.

This does not mean that the SL000164 upper cover itself provides an emergency-stop function or that every four-button NPA contains the same emergency-stop configuration.

Where an emergency-stop control is fitted, its condition and function should be checked according to the applicable machine safety requirements.

Mechanical Interlock Options

The TER NPA can also be configured with a mechanical interlock designed to prevent simultaneous operation of opposite functions.

Where this arrangement is present, its operation should be inspected during pendant refurbishment.

Replacement of the upper enclosure should not interfere with the intended operation of the installed control components.

Inspecting the Pendant Cable

The pendant cable experiences repeated movement and flexing during normal operation and should be inspected whenever the housing is opened.

The outer sheath should be checked for cuts, abrasion, crushing or other visible deterioration.

Particular attention should be given to the area where the cable enters the pendant housing.

Four-Button NPA Cable Entry

The 4-button NPA belongs to TER’s 2-to-6-button cable-entry group.

For these configurations, TER specifies a rubber cable sleeve arrangement suitable for cable diameters from 10 mm to 18 mm.

The condition of the cable-entry and support components should be inspected during refurbishment of a four-button pendant.

TER PRSL9735PI Cable Sleeve Holder

The applicable TER cable sleeve holder for the 2-to-6-button standard NPA group is PRSL9735PI.

This component is separate from the SL000164 upper cover but forms part of the broader cable-entry arrangement that should be considered during pendant maintenance.

Damage or deterioration in the cable-entry components should be addressed before the pendant returns to service.

Supporting a Natural Operator Position

The NPA cable sleeve arrangement can be angled by up to 20 degrees to help provide the operator with a clear view of the control elements and support a natural working position.

Any cable-entry components disturbed during upper cover replacement should therefore be returned to their intended arrangement.

The cable should not be forced into a position that places unnecessary stress on the entry components or internal connections.

Checking Cable Strain Relief

The pendant cable should be mechanically supported so that external pulling forces are not unnecessarily transferred to internal electrical terminals.

The cable support and clamp components should remain secure and correctly assembled.

Any damaged strain-relief component should be corrected during refurbishment rather than ignored.

Environmental Protection of the Complete NPA

TER specifies an IP65 degree of protection for the complete correctly assembled NPA pendant control station.

This rating applies to the complete NPA assembly and should not be interpreted as an independent IP65 rating for the SL000164 upper cover by itself.

Correct condition and assembly of the upper, central and lower enclosure sections, tightening components and cable-entry arrangement all contribute to the finished pendant installation.

Understanding the IP65 Specification

When specifying SL000164 as an individual spare part, it is important to distinguish the component from the complete pendant.

The upper cover contributes to the overall enclosure arrangement, but the complete degree of protection depends on correct assembly of the entire NPA control station.

This distinction ensures accurate technical information is provided to engineers, maintenance personnel and purchasing teams.

Protection in Dusty Industrial Environments

Crane, hoist and industrial machinery applications can expose pendant controls to dust and airborne contamination.

Maintaining the physical integrity of the complete enclosure helps protect the internal electrical components from these surrounding conditions.

Cracked covers and incorrectly assembled enclosure joints should therefore be addressed during maintenance.

Protection in Damp Operating Environments

Pendant stations may also encounter moisture during industrial operation.

Maintaining all enclosure sections and cable-entry components in suitable condition is important to the overall protection provided by the complete NPA.

If moisture is discovered inside the pendant, the cause should be investigated before the new SL000164 is installed.

TER NPA Operating Temperature

TER specifies the complete NPA pendant control station for operation across an ambient temperature range of -25°C to +70°C.

This specification relates to the complete NPA product rather than representing an independent temperature rating for the SL000164 spare upper cover.

The replacement component supports maintenance of the enclosure used within these industrial operating environments.

TER NPA Storage Temperature

The complete TER NPA is specified for storage from -40°C to +70°C.

As with the operating-temperature specification, this is a characteristic of the complete pendant rather than a standalone certification of the SL000164 component.

Replacement covers should nevertheless be stored cleanly and protected from unnecessary impact, contamination and deterioration before installation.

Class II NPA Construction

TER specifies the complete NPA pendant control station as Class II equipment.

Maintenance should preserve the intended manufacturer construction and should not introduce unauthorised modifications to the pendant housing.

The SL000164 should therefore be installed for its intended NPA application rather than modified for unrelated equipment.

Avoiding Unauthorised Enclosure Modifications

Drilling additional holes, cutting the upper cover or otherwise modifying the SL000164 can affect the mechanical integrity and performance of the complete pendant assembly.

If a different actuator arrangement or pendant configuration is required, the appropriate TER solution should be selected.

Modification should not be used as a substitute for correct component and pendant selection.

Winch and Hoist Applications

TER identifies winches and hoists among the applications for the NPA pendant control station.

A four-button pendant can provide a compact operator interface where the machine requires several local commands without the additional size of a larger pendant.

The SL000164 supports long-term maintenance of the upper enclosure used on these compatible installations.

Overhead Travelling Crane Applications

Overhead travelling cranes can use four-button pendant configurations where the machine-control arrangement requires a compact set of directional or auxiliary commands.

The exact function of each button depends on the crane’s electrical and control design.

Where the upper enclosure becomes damaged, SL000164 provides the corresponding TER replacement component for the standard 4-button NPA.

Gantry Crane Applications

Gantry crane pendant controls may be exposed to frequent handling, repeated movement and challenging industrial conditions.

This can place ongoing mechanical demands on the pendant housing.

Replacing a damaged SL000164 upper cover can form part of planned refurbishment of an otherwise serviceable four-button NPA.

Jib Crane Applications

Jib cranes can use pendant control stations for lifting and movement functions according to the individual crane configuration.

The 4-button NPA provides a compact control format where several operator commands are required.

The SL000164 supports maintenance of the corresponding upper enclosure.

Tower Crane Applications

TER identifies tower cranes among the industrial applications for the NPA pendant family.

Where a standard 4-button NPA is incorporated into an applicable control arrangement, maintaining the enclosure in good mechanical condition contributes to reliable long-term operation.

The SL000164 provides the manufacturer-specific upper cover replacement for this pendant configuration.

Harbour Crane Applications

Harbour crane equipment can operate in demanding environments where pendant controls may encounter moisture, contamination and intensive use.

Routine inspection of the enclosure, cable entry and controls is therefore important.

SL000164 provides a dedicated upper enclosure spare for compatible standard 4-button TER NPA installations.

Stage Technology Applications

TER also identifies stage technology as an application for the NPA pendant control station.

Stage lifting and movement systems can require clearly arranged operator commands within a portable pendant interface.

The SL000164 supports refurbishment of the upper enclosure where a compatible four-button standard NPA is used.

Preventative Maintenance for the 4-Button NPA

The upper cover should be inspected during routine maintenance rather than waiting until complete enclosure failure occurs.

Small cracks, damaged edges, deformation or evidence of repeated impact can provide early warning that replacement may soon be required.

Planned replacement can help prevent an enclosure problem from contributing to unexpected equipment downtime.

Reducing Unplanned Equipment Downtime

A damaged pendant can prevent otherwise serviceable lifting or industrial equipment from operating effectively.

Accurate spare-part identification helps maintenance teams obtain the correct enclosure component without unnecessary delays.

For installations using a standard 4-button TER NPA, SL000164 is an important upper enclosure replacement reference.

Keeping SL000164 as a Maintenance Spare

Facilities operating multiple four-button NPA pendants may choose to keep SL000164 within their maintenance inventory.

The appropriate stock level depends on the number of installed pendants, equipment criticality, operating environment and previous maintenance history.

Holding the correct enclosure spare can be particularly valuable where crane or production downtime has significant operational consequences.

Correct Spare-Part Description

For purchasing and maintenance records, a useful description is “TER SL000164 Upper Cover with Tightening Rubber – NPA 4 Button.”

This identifies the manufacturer, exact part number, component type and compatible pendant configuration.

Clear identification helps prevent confusion with other TER NPA enclosure components.

SL000164 Versus SL000165

The SL000164 should not be confused with TER SL000165.

SL000164 is specified for the 4-button standard NPA configuration, while SL000165 is the corresponding upper cover for the 6-button NPA.

The pendant button configuration should therefore be confirmed before ordering.

SL000164 Versus SL000166

TER SL000166 is intended for the 8-button standard NPA configuration rather than the four-button pendant.

Although these components perform a similar structural role within the NPA family, they correspond to different enclosure sizes.

SL000164 should be selected specifically for the standard 4-button NPA.

Standard NPA Versus NPA-CP

The standard NPA and NPA-CP pendant families should be distinguished carefully during spare-part selection.

The NPA is designed for auxiliary control, while NPA-CP is a separate TER pendant family intended for direct control applications.

Components should not be assumed interchangeable simply because the pendants have the same number of control positions.

SL000164 Versus PRSL5815PI

TER PRSL5815PI is the upper cover reference used for the 4-button NPA-CP configuration.

SL000164, by comparison, is intended for the standard 4-button NPA pendant.

This distinction is important for maintenance teams and service organisations that support both TER pendant families.

Choosing the Correct NPA Upper Cover

Selection should be based on the TER pendant family, number of buttons and exact manufacturer spare-part reference.

For a confirmed standard 4-button TER NPA requiring replacement of its upper enclosure, the appropriate reference is SL000164.

This precise identification helps purchasing and maintenance teams avoid ordering an upper cover intended for another NPA size or a different TER pendant family.

Why Choose the TER SL000164?

The TER SL000164 provides a manufacturer-specified replacement upper cover for the standard 4-button NPA pendant control station.

Its supplied tightening rubber supports correct refurbishment of the enclosure, while the exact TER part number provides maintenance and purchasing teams with a clear spare-parts reference.

For industrial maintenance departments, crane and hoist service organisations, OEMs and system integrators, SL000164 offers a practical solution for maintaining established TER NPA installations.

TER SL000164 for Long-Term NPA Maintenance

The TER SL000164 Upper Cover for 4 Buttons supports the continued repair and refurbishment of compatible standard four-button TER NPA pendant control stations.

By allowing a damaged upper enclosure to be replaced where the remaining pendant components are suitable for continued service, the SL000164 can help preserve existing equipment, simplify spare-parts support and reduce unnecessary complete pendant replacement.

Correct product identification, safe isolation, careful installation, inspection and complete functional testing remain essential when returning a refurbished NPA pendant control station to service.

Understanding the Structural Role of the SL000164

The TER SL000164 upper cover forms an important structural section of the complete 4-button NPA pendant control station. Although the cover does not perform an electrical switching function, it helps form the enclosure surrounding the pendant’s internal wiring, contact elements, actuators and associated control components.

Maintaining the upper enclosure in sound mechanical condition helps protect the internal assembly during everyday industrial operation.

Where damage is limited to the upper cover, replacement with the correct SL000164 can support refurbishment of the pendant while allowing suitable existing electrical and mechanical components to remain in service.

Protecting the Internal Pendant Assembly

The complete NPA enclosure helps protect internal components from the mechanical handling and environmental exposure encountered during normal machine operation.

Conductors, terminals, switching elements and actuator mechanisms should remain enclosed and protected from accidental contact and external damage.

A cracked, distorted or badly damaged upper cover can reduce the effectiveness of this enclosure and should be assessed promptly.

Mechanical Protection During Daily Use

Four-button pendant stations can be handled many times throughout an operating shift.

They may be carried while an operator follows a load, moved between work areas, suspended beside lifting equipment or repeatedly returned to a storage location.

This regular handling places continual mechanical demands on the enclosure and makes periodic visual inspection worthwhile.

Recognising Signs of Upper Cover Damage

Common signs of deterioration can include cracks, deformation, chipped edges, worn surfaces or enclosure joints that no longer align correctly.

Small defects should not automatically be dismissed because repeated vibration and handling can allow minor damage to progress over time.

Where the defect is confined to the upper enclosure of a compatible standard 4-button NPA, SL000164 provides the appropriate TER replacement reference.

Inspecting the Pendant After a Drop

If the pendant has been dropped onto a hard surface, the complete control station should be inspected rather than checking only the most visible impact point.

Mechanical force can be transferred through the upper cover into the central section, lower enclosure, actuators, internal wiring and cable-entry components.

Replacement of the SL000164 should therefore form part of a broader condition assessment after a significant impact.

Repeated Impact and Swinging Damage

Suspended pendant stations can sometimes swing into crane structures, machinery, columns, loads or surrounding equipment during operation.

Repeated contact can gradually weaken the housing even if an individual impact does not immediately create a visible crack.

If repeated impact is evident, the pendant storage position and normal operating arrangement should also be reviewed.

Inspecting Corners and Enclosure Edges

The corners and perimeter edges of the upper cover can experience significant stress during impact.

Fine cracks, deformation or chipped material should be identified before the pendant is returned to service.

Damage around enclosure mating surfaces is particularly important because it can interfere with correct reassembly.

Inspecting the Upper Cover Mounting Areas

The SL000164 must connect correctly with the adjoining NPA enclosure section.

Damaged mounting areas or local distortion can prevent the replacement cover from fitting as intended.

A new upper enclosure should not be forced onto a damaged or incorrectly aligned central section.

Checking the PRSL5816PI Central Section

The standard 4-button NPA uses TER PRSL5816PI as its corresponding central enclosure section.

This component should be inspected whenever the upper cover has suffered significant mechanical damage.

If the central section is also cracked or distorted, a broader enclosure repair may be required.

Checking the SL000167R Lower Enclosure

The matching lower enclosure for the standard 4-button NPA is TER SL000167R.

This component should also be inspected after substantial impact, crushing or accidental dropping.

Damage affecting multiple enclosure sections may change the most appropriate repair strategy.

Preparing the Pendant for Repair

Before opening the pendant, the associated equipment should be placed in a safe condition and isolated according to applicable workplace and machine procedures.

This is especially important where the pendant can command lifting, travelling or other potentially hazardous machine movements.

Maintenance should be undertaken by competent personnel familiar with the control system.

Preventing Unexpected Machine Movement

Working on a pendant while the control circuit remains active can create unnecessary risk.

Safe isolation helps prevent unintended machine operation while wiring, actuators and contact elements are being inspected or moved.

Applicable lockout and isolation procedures should therefore be completed before maintenance begins.

Removing the Existing Upper Cover

Once the machine has been safely isolated, the existing upper cover can be removed in accordance with the applicable TER NPA maintenance procedure.

The enclosure should be opened carefully so that internal conductors and components are not pulled, trapped or damaged.

If resistance is encountered, the cause should be identified rather than applying excessive force.

Cleaning Before Reassembly

Dirt and contamination should be removed from the enclosure mating surfaces before the replacement SL000164 is installed.

Clean surfaces make it easier to identify damage and help the enclosure components fit together correctly.

Cleaning methods should be suitable for the enclosure material and surrounding electrical components.

Positioning the Tightening Rubber

The tightening rubber supplied with SL000164 should be fitted in its intended position before the upper cover is fully secured.

It should not be twisted, folded, trapped or contaminated.

Correct positioning contributes to the intended enclosure fit and overall assembly.

Checking the Tightening Rubber Before Closure

Before final closure, the technician should confirm that the tightening rubber remains correctly positioned around the relevant enclosure interface.

Any displacement should be corrected before the housing is fully assembled.

Forcing the cover into place with the rubber incorrectly positioned can result in poor fit and unnecessary mechanical stress.

Avoiding Enclosure Misalignment

The SL000164 should align naturally with the corresponding enclosure components.

If the housing does not fit correctly, the cause should be investigated before final assembly.

Possible causes can include trapped wiring, damaged mating surfaces or incorrectly positioned internal parts.

Avoiding Housing Distortion

The upper cover should not be forced into position if the adjoining enclosure sections are distorted or damaged.

Forcing unsuitable components together can introduce additional stress into the housing.

All relevant enclosure sections should be mechanically sound before recommissioning.

Checking Internal Wire Routing

Before the pendant is closed, accessible conductors should be checked to ensure they are clear of enclosure joints and fastening locations.

A conductor trapped between housing sections can suffer insulation damage and may prevent correct closure.

Careful wire routing is especially important in a four-button pendant containing several control connections.

Preventing Pinched Conductors

Pinched wiring can introduce a new electrical fault during what was originally an enclosure repair.

Conductors should have adequate clearance from mating surfaces, actuator mechanisms and fastening areas.

The internal arrangement should be checked carefully before final closure.

Maintaining Wire Identification

Existing wire numbers, labels and terminal identification should be preserved wherever possible.

Clear identification simplifies future maintenance and helps technicians confirm that the original electrical arrangement has been retained.

Any missing or damaged identification should be restored in accordance with the relevant machine documentation.

Using Photographs as a Service Reference

Photographs taken before conductors or internal components are moved can be useful during reassembly.

This can be particularly helpful where several machine functions are wired into the four-button pendant.

Photographs should support, rather than replace, accurate electrical drawings and maintenance records.

Inspecting Internal Terminals

Accessible terminals should be checked for looseness, corrosion, mechanical damage or signs of overheating.

A poor electrical connection can produce intermittent machine operation even when the enclosure itself is in satisfactory condition.

Any abnormal terminal condition should be corrected before reassembly.

Inspecting Conductor Insulation

Electrical insulation should remain intact throughout the accessible internal wiring.

Cuts, abrasion, crushing or heat damage should be investigated before the pendant returns to service.

A replacement upper cover should only be installed after the technician is satisfied that the wiring remains suitable for continued use.

Signs of Electrical Overheating

Discolouration, melted insulation or heat-damaged terminals can indicate an electrical problem requiring further investigation.

Replacing SL000164 does not correct faults caused by poor connections, damaged contact elements or electrical overload.

The underlying cause should be resolved before recommissioning.

Inspecting for Moisture Inside the Pendant

Moisture discovered inside the enclosure should be treated as an indication that the complete pendant requires further assessment.

The source may involve another enclosure section, cable-entry component, damaged tightening element or previous incorrect assembly.

The cause should be identified and corrected before installation of the new upper cover is completed.

Inspecting for Dirt and Contamination

Industrial dust, oil and other contaminants can enter a damaged pendant or remain from previous maintenance activities.

Contamination should be removed using suitable methods before reassembly.

Recurring contamination may indicate an additional enclosure or cable-entry issue requiring attention.

Inspecting All Four Control Positions

All four control positions should be inspected while the pendant is open.

Each actuator should remain securely mounted and mechanically sound.

Any looseness, cracking or abnormal movement should be corrected before the replacement SL000164 is installed.

Checking Pushbutton Movement

Pushbuttons should operate consistently according to their intended design without sticking or binding.

If an actuator feels abnormal, the cause may involve the pushbutton, its mounting or the associated switching element.

The fault should be corrected rather than assuming a new enclosure will resolve it.

Inspecting Multi-Speed Pushbuttons

The TER NPA can be configured with one-, two- or three-speed controls depending on the application.

Where multi-speed pushbuttons are installed, each stage of actuator travel should operate consistently.

The corresponding electrical functions should then be verified during recommissioning.

Inspecting Contact Elements

The contact elements associated with the pendant controls should remain securely fitted and suitable for continued service.

Where machine operation has become intermittent, contact elements and terminals should form part of the diagnostic process.

Functional testing should confirm reliable operation after reassembly.

Inspecting a Mechanical Interlock if Fitted

Some NPA configurations can incorporate a mechanical interlock to prevent simultaneous operation of opposite functions.

Where this feature is installed, its movement should remain smooth and effective after enclosure maintenance.

The replacement upper cover should not interfere with the intended action of the interlock.

Inspecting an Emergency-Stop Control if Fitted

If the particular NPA configuration includes an emergency-stop control, it should be inspected and tested according to the applicable machine safety procedure.

The SL000164 is an enclosure component and does not itself provide an emergency-stop function.

Safety-related performance should therefore be verified independently after maintenance.

Inspecting Selector and Auxiliary Controls

Where selector switches or other auxiliary actuators are installed, their mechanical condition should also be checked.

They should remain securely mounted and operate correctly through their intended positions.

The exact actuator arrangement depends on the individual machine configuration.

Inspecting the Pendant Cable

The pendant cable should be examined during the same maintenance activity.

The outer sheath should be checked for cuts, abrasion, crushing, splitting or other visible deterioration.

Particular attention should be given to areas exposed to repeated bending and flexing.

Inspecting the Cable Near the Pendant Entry

The cable section immediately adjacent to the pendant can experience substantial movement during everyday use.

Deterioration in this area can eventually affect internal conductors and control reliability.

Visible cable damage should be addressed independently of the upper cover replacement.

Checking the 2-to-6-Button Cable Sleeve Arrangement

The 4-button standard NPA belongs to TER’s 2-to-6-button cable-entry group.

The corresponding cable sleeve holder for this group is TER PRSL9735PI.

This cable-entry arrangement should be inspected whenever the pendant is refurbished.

Checking the Cable Sleeve Position

The cable sleeve arrangement can be angled to help support operator visibility and a natural working position.

If this component is disturbed during service, it should be returned to an appropriate intended position.

The cable should not be forced into an arrangement that places unnecessary mechanical stress on the entry components.

Checking Cable Strain Relief

The cable should be mechanically supported so that external pulling forces are not transferred unnecessarily to internal electrical connections.

Any cable clamp, sleeve holder or associated support component should remain secure and correctly assembled.

Damage identified in this area should be corrected before the pendant returns to service.

Intermittent Cable Faults

A damaged conductor inside the pendant cable can sometimes produce intermittent machine operation as the cable moves.

This type of fault may be mistaken for a defective pushbutton or contact element.

Where intermittent operation is reported, the pendant cable should form part of the diagnostic process.

Inspecting the Cable Entry for Contamination

The cable-entry area should remain clean and correctly assembled.

Accumulated dirt, moisture or damaged components can indicate that further maintenance is required.

The condition of this area contributes to the integrity of the complete NPA enclosure.

Maintaining the Complete NPA Housing

TER specifies IP65 protection for the complete correctly assembled NPA pendant control station.

The SL000164 is one component within this enclosure system and should not be represented as independently providing the complete IP65 rating.

Correct condition and assembly of all enclosure, tightening and cable-entry components are important to the overall pendant.

Checking the Upper Enclosure Joint After Installation

Once the replacement upper cover has been fitted, the joint between the housing sections should be inspected around its full perimeter.

The enclosure should appear evenly assembled without visible gaps or displaced components.

Any irregularity should be investigated before functional testing begins.

Checking for Displaced Tightening Rubber

The tightening rubber should not protrude unexpectedly from the enclosure joint.

Visible displacement can indicate that it moved during assembly.

If necessary, the pendant should be reopened and the component repositioned rather than leaving an incorrectly assembled joint.

Mechanical Inspection After Reassembly

The complete pendant should feel mechanically secure when handled.

There should be no unintended movement between the upper, central and lower enclosure sections.

The cable entry and installed controls should also remain firmly mounted.

Functional Testing After SL000164 Installation

After mechanical reassembly, the pendant should undergo appropriate functional testing.

This confirms that internal wiring and switching components were not disturbed during the enclosure repair.

Testing should be completed under controlled conditions before the pendant returns to normal service.

Testing All Four Control Positions

Each relevant control position should be operated and checked for the expected response.

Testing all four positions helps identify any wiring, actuator or contact issue introduced or discovered during refurbishment.

Unexpected behaviour should be investigated before the equipment is released for use.

Testing Paired Movement Commands

Four-button crane and hoist pendants can be configured with paired movement commands such as raise and lower or left and right.

Where paired controls are present, each direction should be verified individually.

The operator interface should correspond correctly with the resulting machine function.

Testing Auxiliary Functions

Depending on the installation, individual control positions may operate movement commands or other auxiliary functions.

Each function should be verified against the relevant electrical documentation and pendant labelling.

The purpose of every actuator should remain clearly understood before recommissioning.

Testing Multi-Speed Functions

Where two-speed or three-speed pushbuttons are installed, each operating stage should be tested under controlled conditions.

The machine response should correspond correctly with the intended speed command.

Any inconsistent or missing stage should be investigated before return to normal operation.

Testing Under Controlled Conditions

Initial equipment testing should take place under conditions that allow unexpected behaviour to be managed safely.

Personnel should follow the site’s established commissioning and maintenance procedures.

The pendant should not be returned to production use until all required checks are complete.

Testing Safety-Related Functions

Any safety-related control incorporated into the pendant should be tested according to the applicable machine safety procedure.

Replacing the upper enclosure does not itself demonstrate that a safety function remains effective.

Required safety checks should therefore be completed independently.

Documenting the SL000164 Repair

The replacement can be recorded within the machine’s maintenance history using the exact TER part number SL000164.

The repair date, reason for replacement and relevant machine or pendant identification can also be documented.

Accurate records support future maintenance and spare-parts planning.

Monitoring Repeat Upper Cover Damage

If the same pendant requires repeated upper cover replacement, maintenance history can help identify a pattern.

Recurring damage may indicate frequent impact, unsuitable storage, cable stress or particularly harsh operating conditions.

Correcting the underlying cause may extend the service life of future replacement components.

Reviewing Pendant Storage Arrangements

The pendant should have an appropriate storage location when the machine is not operating.

Leaving the control station on the floor or against moving equipment increases the possibility of impact, crushing and contamination.

A consistent storage arrangement can reduce avoidable enclosure damage.

Reducing Swinging and Collision Damage

If a suspended pendant frequently strikes nearby structures, the installation and operating practices should be reviewed.

Reducing repeated contact can help protect the upper cover, central section, lower enclosure, controls and internal wiring.

Any changes should remain compatible with the intended machine design and safe operation.

Operator Handling Practices

Careful handling can have a significant influence on pendant service life.

The pendant should not be thrown, deliberately dropped or used to pull machinery.

The cable should also not be used as an inappropriate handle for moving equipment.

Routine Visual Inspection

A simple visual inspection can identify developing problems before complete pendant failure occurs.

Operators and maintenance personnel can look for cracks, loose enclosure sections, cable damage and controls that feel abnormal.

Any defect should be reported and assessed according to site procedures.

Scheduled NPA Maintenance

More detailed inspection can be incorporated into scheduled crane, hoist or machinery maintenance.

The appropriate frequency depends on operating conditions, usage and applicable maintenance requirements.

High-use pendant stations may justify more frequent inspection.

SL000164 for Crane Maintenance Workshops

Crane maintenance workshops can identify SL000164 as a dedicated spare for repairing standard 4-button TER NPA pendants.

Recording the exact part number reduces time spent distinguishing between similar enclosure components.

This can help improve repair turnaround and purchasing accuracy.

SL000164 for Hoist Service Organisations

Hoist service organisations may maintain equipment across numerous customer sites and manufacturers.

Using the complete TER part number provides a reliable method of identifying the required upper enclosure.

For a confirmed standard four-button NPA, the correct upper cover reference is SL000164.

SL000164 for Industrial Maintenance Departments

Industrial sites operating TER NPA pendants can include SL000164 within their internal spare-parts catalogue.

This can be particularly useful where several identical 4-button pendants are installed on production-critical equipment.

Stocking decisions should reflect equipment criticality and previous maintenance experience.

SL000164 for OEM Spare-Parts Support

OEMs can list SL000164 within equipment manuals and aftermarket spare-parts documentation where a standard 4-button TER NPA has been supplied.

This provides end users with a precise replacement reference for future upper enclosure maintenance.

Clear documentation improves long-term machine serviceability.

SL000164 for System Integrators

System integrators can use SL000164 when refurbishing compatible existing NPA pendant installations.

Where the original control arrangement remains suitable, replacing the upper cover allows the established operator interface to be retained.

Any change to machine control functions should be engineered independently of the enclosure repair.

Repairing Rather Than Automatically Replacing the Complete Pendant

A damaged upper cover does not necessarily mean that the complete pendant must be discarded.

If the central and lower enclosure sections, cable, wiring and switching components remain serviceable, replacing SL000164 may provide an appropriate repair.

The decision should be based on inspection of the entire control station.

When Individual Upper Cover Replacement Makes Sense

Individual replacement is especially practical where damage is localised to the upper enclosure and the pendant otherwise remains reliable.

This allows serviceable components to continue in operation while the damaged housing section is renewed.

Functional testing is still required before recommissioning.

When Broader Refurbishment Is Appropriate

If the pendant also contains worn actuators, damaged wiring, deteriorated cable-entry components or damaged central and lower enclosure sections, additional refurbishment may be appropriate.

Completing multiple necessary repairs during one planned maintenance event can reduce repeated downtime.

All replacement components should be correctly matched to the standard 4-button NPA configuration.

When Complete Pendant Replacement Should Be Considered

Where the enclosure is extensively damaged and several electrical components are also deteriorated, complete pendant replacement may be more practical than rebuilding the control station component by component.

Maintenance cost, equipment criticality and expected remaining service life should be considered.

The objective should be a reliable and correctly configured operator control station.

Maintaining the Original TER Configuration

Using the correct SL000164 helps preserve the original physical arrangement of the standard 4-button TER NPA.

This is useful where machine documentation, operator training and spare-parts systems already reference the existing pendant design.

A correctly selected replacement enclosure supports consistent long-term maintenance.

Accurate Purchasing Information

Purchasing documentation should include the complete TER reference SL000164 and identify it as the upper cover with tightening rubber for the standard 4-button NPA.

A generic description such as “TER 4-button upper cover” may not provide enough information to distinguish between TER pendant families.

Exact product identification helps reduce ordering errors.

Recommended Ordering Description

A suitable purchasing description is “TER SL000164 Upper Cover with Tightening Rubber for 4-Button NPA Pendant.”

This identifies the manufacturer, component, compatible pendant family and actuator configuration.

The TER part number should remain the primary ordering reference.

Supporting Reliable NPA Refurbishment

Successful pendant refurbishment involves more than simply replacing the visible damaged component.

Correct part identification, safe isolation, inspection of internal components, careful reassembly and complete functional testing all contribute to a reliable result.

The SL000164 provides the correct TER upper cover component for this process on a compatible standard 4-button NPA.

TER SL000164 as a Practical Maintenance Spare

The TER SL000164 provides maintenance departments, crane and hoist service companies, OEMs and system integrators with a precise spare-part solution for the standard 4-button NPA pendant.

Supplied with tightening rubber, it supports repair of damaged upper enclosure sections while allowing suitable existing pendant components to remain in service.

Correctly stocked, identified and installed, the SL000164 can form an important part of long-term TER NPA maintenance and refurbishment programs.

Industrial Applications for the TER SL000164

The TER SL000164 Upper Cover for 4 Buttons supports the maintenance and refurbishment of compatible standard TER NPA pendant control stations used across industrial lifting, crane, hoist, winch, material-handling and machinery-control applications.

Because pendant controls are frequently handled and exposed to impact, vibration, dust, moisture and general industrial wear, enclosure components can require replacement even where internal electrical parts remain suitable for continued service.

The SL000164 provides the correct TER upper enclosure reference for the standard 4-button NPA configuration.

Overhead Travelling Crane Applications

Overhead travelling cranes are a common application for pendant control stations because operators may need direct local control while maintaining a clear view of the load and surrounding work area.

A 4-button NPA can provide a compact interface for paired crane or lifting commands, depending on the individual machine-control design.

Where the upper enclosure becomes cracked or damaged, SL000164 allows the affected housing section to be replaced while retaining serviceable internal components where appropriate.

Gantry Crane Applications

Gantry crane pendant controls may be exposed to frequent movement, repeated handling and challenging industrial operating conditions.

These environments can place ongoing mechanical demands on the enclosure, particularly where the pendant is carried between operating positions or suspended alongside the crane.

The SL000164 supports targeted refurbishment where the upper section of a compatible four-button NPA requires replacement.

Jib Crane Applications

Jib cranes can use pendant control stations to provide local lifting and movement commands within a compact operator interface.

A 4-button arrangement may suit applications requiring several clearly separated functions without the additional length of a larger pendant.

SL000164 provides the correct upper cover reference for the standard four-button TER NPA used in these installations.

Tower Crane Applications

TER identifies tower cranes among the applications for the NPA pendant control station family.

Where a standard 4-button NPA is incorporated into an applicable control arrangement, maintaining the housing in good mechanical condition helps support reliable long-term operation.

The SL000164 provides a manufacturer-specific replacement option for a damaged upper enclosure.

Harbour Crane Applications

Harbour crane equipment can operate in demanding environments where pendant controls may encounter moisture, contamination and intensive use.

Regular inspection of the pendant housing, cable entry and control elements is therefore important.

SL000164 provides a dedicated upper enclosure spare for compatible four-button standard TER NPA installations.

Hoist Applications

Industrial hoists frequently use pendant stations for local operator control.

A four-button configuration can be suitable where several directional or auxiliary functions are required within a compact control format.

When the upper enclosure becomes damaged, replacing the SL000164 can help restore the pendant housing while preserving suitable existing internal components.

Winch Applications

Industrial winches can use pendant controls for winding, unwinding and additional machine commands depending on the equipment design.

Because these pendants may be moved regularly during operation, their housings are subjected to repeated mechanical handling.

The SL000164 supports maintenance of compatible standard four-button NPA pendants used in these applications.

Stage Technology Applications

TER also identifies stage technology among the application areas for the NPA pendant family.

Stage lifting and movement equipment can require clearly arranged local control functions within a portable operator interface.

The SL000164 supports refurbishment of the upper enclosure where a standard four-button NPA is installed.

Industrial Machinery Applications

The NPA is designed for auxiliary control of industrial machinery, allowing the pendant family to be used beyond traditional crane and hoist applications.

A 4-button configuration can provide a practical interface where several machine commands need to be available locally to the operator.

The SL000164 supports maintenance of the corresponding upper enclosure arrangement.

Material Handling Applications

Material-handling equipment can require directional and auxiliary controls depending on the machinery design.

A four-position pendant provides a compact control solution where the application does not require a larger number of actuators.

The SL000164 supports repair and refurbishment if the upper housing becomes damaged during service.

Compact Four-Button Operator Interface

The four-button NPA provides a relatively compact pendant format within the broader NPA range.

TER identifies the 4-actuator NPA as having an overall length of approximately 372 mm in the complete pendant configuration.

This compact arrangement can be useful where operators require several functions but do not need the greater number of control positions offered by the larger NPA models.

Four-Button NPA Weight

TER specifies an approximate weight of 0.650 kg for the complete 4-actuator NPA configuration.

This value applies to the complete pendant control station rather than to the SL000164 upper cover by itself.

The relatively compact complete assembly supports handheld operation in suitable industrial applications.

Ergonomic Pendant Handling

The NPA family is designed as a handheld auxiliary control station, making operator handling an important consideration.

The ability to angle the cable sleeve by up to 20 degrees can help improve visibility of the controls and support a more natural operating position.

During refurbishment, this feature should be preserved by correctly reassembling the cable-entry components.

Maintaining Clear Control Identification

Clear control identification is important on any industrial pendant station.

Where labels or symbol discs are fitted to the control elements, they should remain legible and appropriate for the machine functions they represent.

Replacing the upper enclosure provides a useful opportunity to inspect the condition and clarity of these operator markings.

Checking Pushbutton Symbols

TER NPA pendants can be equipped with different pushbutton styles and symbol arrangements depending on the configuration.

During refurbishment, symbols should be checked for wear, damage or mismatch with the actual machine function.

Any unclear control identification should be corrected before the pendant returns to normal operation.

Maintaining Operator Familiarity

Retaining the original four-button NPA arrangement can help preserve an operator interface already familiar to site personnel.

This can be particularly valuable where operating procedures, training documentation and machine labels are based on the existing pendant configuration.

A like-for-like SL000164 enclosure replacement allows the physical control format to remain unchanged.

Preventative Maintenance Programs

The upper cover should form part of routine preventative maintenance inspection rather than being assessed only after complete failure occurs.

Technicians can check for cracks, deformation, damaged edges, loose enclosure joints and evidence of repeated impact.

Early identification allows replacement to be planned before the pendant becomes unsuitable for continued use.

Daily Operator Inspection

Operators can assist with early fault identification by observing the condition of the pendant before use.

Cracks, loose housing sections, damaged cables or control elements that feel unusual should be reported according to workplace procedures.

Prompt reporting can help prevent minor damage from becoming a larger maintenance issue.

Inspecting for Repeated Impact

Scuffing, chips and repeated surface marks can indicate that the pendant is regularly contacting machinery or nearby structures.

Even where the housing remains mechanically intact, repeated impact can reduce the expected service life of enclosure components.

The operating and storage arrangement should be reviewed if this damage pattern occurs frequently.

Improving Pendant Storage

A designated storage position can help reduce unnecessary damage when the control station is not in use.

The pendant should not be left on the floor or in locations where it can be crushed, struck by moving equipment or exposed to unnecessary contamination.

Good storage practices can extend the service life of both the SL000164 and the complete NPA assembly.

Reviewing Cable Position

Poor cable positioning can contribute to repeated pendant movement, dragging or collision with surrounding structures.

If the control station routinely swings into equipment or rests in unsuitable positions, the installation and operating practices should be reviewed.

Any changes should remain compatible with the machine design and safe operator access.

Reducing Operator-Induced Damage

The pendant should not be used as a handle for moving machinery or pulling equipment.

The cable should also not be subjected to unnecessary pulling forces.

Careful everyday handling can significantly reduce mechanical wear on the upper cover and other enclosure components.

Cleaning the SL000164 Upper Cover

The exterior of the replacement upper cover can be cleaned as part of routine maintenance using methods suitable for the complete NPA control station.

Cleaning should remove industrial dirt and contamination without damaging the enclosure, tightening rubber, control markings or internal electrical components.

Chemical compatibility should be considered before aggressive cleaning products are used.

Cleaning Around Enclosure Joints

Dirt can accumulate around the enclosure joints during everyday industrial service.

Keeping these areas clean makes developing cracks, deformation or displaced tightening components easier to identify.

Cleaning methods should not force water or contamination into the pendant.

Inspecting for Chemical Exposure

Some industrial environments can expose pendant controls to lubricants, solvents, cleaning products and process chemicals.

Unusual softening, discolouration, swelling or surface deterioration can indicate that the enclosure material has been affected.

Recurring chemical damage should prompt investigation of both the operating environment and cleaning practices.

Inspecting for Heat Damage

Warping, deformation or unusual discolouration can indicate excessive heat exposure.

The source should be investigated before a new SL000164 upper cover is installed.

Replacing the enclosure without correcting an abnormal heat source can lead to repeated damage.

Inspecting for Environmental Ageing

Long-term exposure to demanding industrial environments can gradually affect pendant enclosure condition.

Brittleness, cracking and general surface degradation should be monitored as part of scheduled maintenance.

Replacement should be considered where deterioration affects the mechanical integrity of the upper cover.

Inspecting the Tightening Rubber Over Time

The tightening rubber should be checked whenever the pendant is opened for maintenance.

Age, contamination and repeated disassembly can affect its condition.

Because SL000164 is supplied with tightening rubber, this component can be renewed at the same time as the upper enclosure.

Refurbishing an Older 4-Button NPA

An older pendant may benefit from broader refurbishment when the upper cover is replaced.

This can include inspection of all four control positions, switching elements, internal wiring, cable entry, central section and lower enclosure.

Addressing several developing issues during one planned maintenance event can improve overall reliability.

Replacing Multiple Worn Components

Where several pendant components are approaching the end of their useful service life, replacing them during the same maintenance activity can be more efficient than completing repeated individual repairs.

The SL000164 can therefore form part of a wider refurbishment program for the standard 4-button NPA.

Complete functional testing should follow all maintenance work.

Maintaining the Original Pendant Layout

Using the correct TER replacement upper cover helps preserve the physical operator-control arrangement already established on the machine.

This can be useful where existing electrical drawings, procedures and operator training reference the original four-button pendant.

A like-for-like enclosure repair avoids unnecessary changes to the interface.

Supporting Existing Electrical Documentation

Machine drawings and spare-parts lists often identify the installed control station and its associated components.

Using SL000164 for the standard four-button NPA helps keep the physical equipment consistent with this documentation.

This can simplify future maintenance and fault diagnosis.

Maintaining Spare-Part Standardisation

Sites operating multiple identical four-button NPA pendants can benefit from standardising their spare-parts inventory.

Recording SL000164 as the common upper cover reference can reduce duplicate stock and purchasing errors.

This can also help maintenance teams prepare replacement parts before scheduled work begins.

Spare-Part Labelling

Stored SL000164 components should be clearly labelled with the TER part number and intended standard 4-button NPA application.

The tightening rubber supplied with the cover should remain stored with the component until installation.

Clear identification helps prevent confusion with similar NPA and NPA-CP enclosure parts.

Spare-Part Storage

Replacement upper covers should be stored in a clean, dry location where they are protected from unnecessary impact and contamination.

Exposure to excessive heat or unsuitable chemicals should also be avoided.

Appropriate storage helps ensure the component remains ready for installation when required.

Inventory Planning for Critical Equipment

Where a standard 4-button NPA is fitted to production-critical lifting or machinery equipment, keeping an SL000164 locally may help reduce downtime following enclosure damage.

The appropriate stock level depends on the number of installed pendants, operating environment, equipment criticality and previous maintenance history.

Sites can use historical failure and replacement information to guide their spare-parts strategy.

Ordering by Exact TER Part Number

The most reliable method of identifying this upper cover is the complete TER part number SL000164.

Generic descriptions such as “4-button pendant cover” can create ambiguity because several TER pendant families and actuator configurations exist.

The exact manufacturer reference should therefore remain the primary purchasing identifier.

Confirming the Standard NPA Pendant Family

Before ordering, the existing control station should be confirmed as a standard TER NPA.

Other TER pendant families may use different enclosure components even where the overall number of control positions is similar.

Correct product-family identification reduces the likelihood of ordering an incompatible spare.

Confirming the Four-Button Configuration

The pendant should also be confirmed as the four-button version.

TER assigns separate enclosure component references to different NPA configurations.

Checking the existing pendant, actuator count and available equipment documentation helps confirm whether SL000164 is the correct replacement.

SL000164 Versus SL000165

TER SL000165 is the corresponding upper cover for the standard 6-button NPA.

It should not be substituted for SL000164 on a four-button pendant.

Although the two products perform a similar enclosure function, they correspond to different pendant sizes.

SL000164 Versus SL000166

The standard 8-button NPA uses TER SL000166 as its upper enclosure component.

This larger enclosure part is not intended as a substitute for the four-button SL000164.

Accurate part-number identification remains important when ordering NPA spare components.

SL000164 Versus PRSL5815PI

TER PRSL5815PI is associated with the four-button NPA-CP configuration rather than the standard auxiliary-control NPA.

SL000164 is the appropriate upper cover reference for the standard four-button NPA.

Maintenance personnel should therefore confirm the pendant family rather than relying only on the number of control positions.

Matching the Correct Central Section

The standard four-button NPA uses TER PRSL5816PI as its corresponding central enclosure section.

This component should be checked whenever impact has damaged the upper cover.

Correct matching of upper and central enclosure components supports proper reassembly of the pendant.

Matching the Correct Lower Enclosure

The corresponding lower enclosure for the standard 4-button NPA is TER SL000167R.

This lower section should also be inspected when the pendant has experienced significant impact or crushing.

Damage affecting more than one housing component should be addressed as part of the overall refurbishment.

Matching the Correct Cable Sleeve Holder

The standard four-button NPA falls within TER’s 2-to-6-button cable-entry group and uses PRSL9735PI as the corresponding cable sleeve holder.

This component is separate from the SL000164 but should be checked whenever the cable-entry arrangement is disturbed or damaged.

Correct cable support contributes to reliable long-term operation of the pendant.

2-to-6-Button Cable Entry Range

TER specifies a rubber cable sleeve suitable for cable diameters from 10 mm to 18 mm on the 2-to-6-button NPA configurations.

This complete pendant specification includes the four-button version associated with SL000164.

The actual cable installation should remain compatible with the intended NPA cable-entry arrangement.

Fault Diagnosis Before Replacing the Upper Cover

If the pendant is malfunctioning, technicians should determine whether the enclosure damage is related to the reported fault.

Electrical problems may originate from switching elements, actuators, internal wiring or the pendant cable rather than from the upper cover itself.

Accurate diagnosis can prevent unnecessary replacement of components that are not responsible for the fault.

When SL000164 Is the Appropriate Repair

SL000164 replacement is particularly appropriate where the upper enclosure is cracked, broken or mechanically damaged while the remaining NPA components remain suitable for continued service.

In this situation, the damaged housing section can be renewed without unnecessary replacement of serviceable electrical and mechanical parts.

The complete pendant should still be inspected and tested following the repair.

When Electrical Faults Are Also Present

If electrical faults are identified during upper cover replacement, they should be corrected before the pendant is reassembled.

These faults may include loose terminals, worn switching components, damaged wiring or cable problems.

The objective should be to return a fully reliable control station to service rather than simply replacing the most visible damaged part.

When Contamination Is Found Inside the Pendant

Internal moisture, dirt or contamination should be investigated rather than simply removed and ignored.

The source may involve enclosure damage, the cable-entry arrangement or incorrect previous assembly.

Correcting the underlying cause can help prevent recurring contamination after SL000164 installation.

When Multiple Enclosure Sections Are Damaged

If the upper, central and lower enclosure sections have all sustained significant damage, replacing only the SL000164 may not provide the most practical repair.

A broader housing refurbishment or complete pendant replacement may be appropriate.

The overall condition of the control station should guide this decision.

When the Pendant Cable Is Severely Damaged

Severe cable damage requires separate corrective action because the pendant cable provides the electrical connection between the control station and the machine.

The cable must remain mechanically and electrically sound for reliable operation.

A replacement upper cover cannot compensate for a damaged or unreliable pendant cable.

When the Controls Are Heavily Worn

An older four-button pendant may contain actuators or switching components that have experienced substantial wear.

Where widespread deterioration is present, broader refurbishment may provide a better long-term result than replacing only the upper cover.

Maintenance decisions should consider equipment criticality, repair cost and expected remaining service life.

Recommissioning After SL000164 Replacement

Once the replacement upper cover has been fitted and the pendant fully reassembled, the control station should be recommissioned carefully.

Mechanical and electrical checks should confirm that the maintenance work has not introduced new defects.

The pendant should not return to normal operation until satisfactory testing is complete.

Testing the Mechanical Assembly

The housing should be inspected to confirm that the upper, central and lower enclosure sections fit securely together.

There should be no unintended gaps, loose components or trapped wiring.

The cable-entry arrangement and installed controls should also remain mechanically secure.

Testing Pushbutton Operation

Each of the four control positions should operate freely without rubbing, sticking or binding.

Any abnormal movement following enclosure reassembly should be investigated.

The replacement SL000164 should not interfere with normal actuator operation.

Testing Electrical Operation

Each relevant pendant command should be electrically verified before the equipment returns to service.

This is particularly important where internal conductors or switching components were moved during the enclosure repair.

Missing, intermittent or unexpected signals should be resolved before normal operation resumes.

Testing Crane and Hoist Movements

Where the pendant controls lifting equipment, machine movement should be tested according to the site’s established commissioning procedure.

Each actuator should correspond with the expected machine response.

Testing should take place under controlled conditions where unexpected behaviour can be managed safely.

Testing Multi-Speed Functions

Where two-speed or three-speed pushbuttons are installed, each stage should be tested.

The resulting machine response should correspond with the intended control function.

Any missing or inconsistent operating stage should be investigated before the equipment returns to normal service.

Testing Opposite Function Interlocks

Where the pendant incorporates a mechanical interlock between opposite functions, the interlock should be checked following enclosure reassembly.

The relevant controls should operate according to their intended mechanical arrangement.

Any abnormal interlock behaviour should be corrected before the equipment is released for use.

Testing Emergency-Stop Functions if Fitted

If the NPA configuration includes an emergency-stop mushroom pushbutton, the complete emergency-stop function should be tested in accordance with the applicable machine safety procedure.

TER specifies that the NPA emergency-stop mushroom pushbutton complies with ISO 13850, but this should not be interpreted as a separate safety certification of the SL000164 upper cover.

Safety-related performance must be verified at machine level after maintenance.

Recording the Repair

Maintenance records should identify SL000164 as the replacement component installed.

The date, reason for replacement and associated machine or pendant identification can also be documented.

This information provides useful history for future maintenance and spare-parts planning.

Tracking Upper Cover Service Life

Recording replacement dates can help maintenance teams understand how long enclosure components typically remain in service under local operating conditions.

Frequent upper cover replacements may indicate harsh handling, repeated impacts or challenging environmental exposure.

This information can support improvements in operating and maintenance practices.

Supporting Long-Term Equipment Reliability

Pendant control stations are relatively compact components within a larger machine system, but their condition directly affects the operator’s ability to control equipment.

Maintaining enclosure integrity helps protect the internal components and supports dependable operation.

The SL000164 contributes to this objective on compatible standard 4-button TER NPA pendants.

Reducing Avoidable Equipment Downtime

A damaged pendant can prevent otherwise serviceable crane, hoist, winch or industrial machinery from operating effectively.

Identifying the correct enclosure spare in advance can reduce repair time and simplify maintenance planning.

For equipment fitted with the standard four-button NPA, SL000164 is therefore a useful replacement reference.

Supporting Sustainable Equipment Maintenance

Replacing only a damaged enclosure component can sometimes avoid discarding a complete pendant that still contains serviceable electrical and mechanical parts.

This modular repair approach can extend the useful service life of existing equipment and reduce unnecessary complete assembly replacement.

The suitability of refurbishment should always be confirmed through inspection of the entire pendant.

Control Devices Support for TER NPA Spare Parts

Control Devices supplies TER pendant control stations and associated replacement components for industrial lifting, material-handling and machinery applications.

Customers maintaining a standard 4-button NPA can use the TER part number and pendant configuration to identify the correct upper enclosure spare.

Accurate product identification supports efficient ordering and dependable refurbishment.

Support for Crane and Hoist Maintenance

For crane and hoist servicing, precise pendant spare-part identification can simplify repair and reduce unnecessary replacement of complete control stations.

This can include enclosure sections, pushbuttons, switching elements, cable-entry components and other compatible NPA spares.

Using correctly matched components helps maintain the intended pendant arrangement.

Support for Existing NPA Installations

Established TER NPA pendant stations can remain in service for extended periods when appropriately maintained.

The SL000164 provides the specific upper enclosure reference for the standard four-button version.

Where additional damage is present, the complete pendant configuration should be assessed before further components are ordered.

Support for OEM and Retrofit Projects

OEMs and system integrators can use TER NPA spare parts when supporting existing machinery and refurbishment projects.

Where the original 4-button control arrangement remains appropriate, replacing the SL000164 upper cover can help retain the established operator interface.

Any modification to machine control functions should remain separately engineered and documented.

Information to Provide When Ordering

When ordering TER SL000164, customers should provide the complete part number and confirm that the existing pendant is a standard 4-button TER NPA.

If the pendant configuration is uncertain, photographs and information from the existing control station can assist with identification.

This can be particularly useful at sites where several TER pendant models are installed.

Recommended Purchasing Description

A clear purchasing description is “TER SL000164 Upper Cover with Tightening Rubber for 4-Button NPA Pendant.”

This identifies the manufacturer, exact component, compatible pendant family and button configuration.

The part number SL000164 should remain the primary ordering reference.

Why Choose the TER SL000164 Upper Cover?

The TER SL000164 provides the correct manufacturer-specific upper enclosure for compatible standard 4-button NPA pendant control stations.

It supports repair of cracked, damaged or worn upper housings while allowing suitable internal components to remain in service where appropriate.

The supplied tightening rubber also supports refurbishment using the intended TER enclosure arrangement.

A Practical Spare for Industrial Maintenance

For maintenance teams responsible for cranes, hoists, winches and industrial machinery fitted with TER NPA pendants, SL000164 is a useful spare-part reference.

Keeping the exact TER part number within maintenance documentation can reduce ordering uncertainty and help shorten repair times.

This can be particularly valuable where equipment downtime affects production or lifting operations.

Supporting Long-Term TER NPA Service

The modular construction of the TER NPA allows individual enclosure components to be replaced where the overall pendant remains suitable for continued service.

The SL000164 supports this maintenance strategy by providing the dedicated upper cover for the standard 4-button NPA.

Correct identification, safe isolation, careful installation and complete functional testing remain important to achieving a dependable repair.

TER SL000164 Upper Cover for 4 Buttons

The TER SL000164 Upper Cover for 4 Buttons is a replacement upper enclosure designed specifically for compatible standard 4-button TER NPA pendant control stations.

Supplied with tightening rubber, it provides a practical solution for repairing cracked, damaged or worn upper housing sections while maintaining the intended TER pendant configuration.

Suitable for NPA pendants used across cranes, hoists, winches, material-handling systems, stage technology and industrial machinery, the SL000164 gives maintenance teams, OEMs, service organisations and system integrators a precise spare-part reference for reliable long-term pendant refurbishment and support.

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