TER SL000166 Upper Cover for 8 Buttons

The TER SL000166 Upper Cover for 8 Buttons is a replacement upper enclosure component designed specifically for the 8-button TER NPA pendant control station. Supplied with tightening rubber, the SL000166 provides a manufacturer-specific replacement solution for the maintenance, repair and refurbishment of compatible NPA pendant controls used throughout industrial lifting, crane, hoist, winch and material-handling applications.

Industrial pendant control stations are regularly exposed to demanding operating conditions. Frequent handling, vibration, accidental impact, dirt, moisture and general mechanical wear can gradually affect the condition of the enclosure. Where the upper cover of an 8-button TER NPA pendant becomes cracked, damaged or unsuitable for continued service, the SL000166 allows this individual enclosure component to be replaced without automatically requiring replacement of the complete pendant control station.

TER identifies SL000166 specifically as the upper cover with tightening rubber for the 8-button NPA configuration. Correct product identification is important because the NPA family is available with multiple actuator configurations, and the enclosure components are selected according to the corresponding pendant size.

TER Part Number SL000166

The manufacturer reference for this replacement component is SL000166.

Using the complete TER part number when ordering helps distinguish the 8-button upper cover from similar enclosure components intended for other NPA configurations.

Maintenance departments, crane service organisations, hoist specialists, OEMs and industrial equipment operators can record SL000166 within their spare-parts systems wherever compatible 8-button TER NPA pendant control stations are installed.

Upper Cover for the 8-Button TER NPA

The SL000166 forms the upper enclosure section of the 8-button TER NPA pendant control station.

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

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

Supplied with Tightening Rubber

TER specifies the SL000166 as an upper cover supplied with tightening rubber.

The inclusion of the corresponding tightening rubber provides the appropriate component for reassembling the upper enclosure rather than requiring technicians to rely on an aged or damaged part removed from the existing pendant.

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

Designed Specifically for the TER NPA

The SL000166 is intended for the TER NPA pendant control station in its 8-button configuration.

The NPA is TER’s pendant control station for auxiliary control of industrial machines and is available in configurations ranging from 2 to 12 actuators.

For the 8-button NPA version, SL000166 provides the corresponding upper cover replacement component.

Correct NPA Identification Before Ordering

Before ordering an SL000166, the existing control station should be positively identified as an 8-button TER NPA pendant.

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

This is particularly important at facilities operating several TER pendant models because components from different pendant families or actuator configurations should not be selected solely according to visual similarity.

Eight-Button NPA Configuration

The 8-button NPA provides a larger operator interface than the smaller two-, three-, four- and six-button versions, allowing additional machine commands to be incorporated into the pendant.

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

The SL000166 does not determine the electrical functions of these controls; it provides the corresponding upper enclosure component for the eight-button NPA housing.

Auxiliary Control of Industrial Machinery

The TER NPA is designed as a pendant control station for auxiliary control of industrial machines.

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

The SL000166 supports maintenance of the enclosure surrounding these control components on the compatible eight-button version.

Replacement Upper Cover for Existing TER Equipment

The SL000166 is particularly useful where the upper enclosure of an existing 8-button NPA has sustained mechanical damage while the remainder of the pendant remains suitable for continued service.

Instead of automatically replacing the entire control station, technicians can inspect the complete 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 may experience greater mechanical wear than protected internal parts because the housing is directly exposed to everyday handling and surrounding operating conditions.

The availability of the SL000166 supports refurbishment of compatible 8-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 controls may be handled repeatedly throughout every operating shift.

They can be carried between working positions, suspended alongside lifting equipment, moved while operators follow 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 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 fastening areas.

After a significant drop, the complete NPA pendant should be inspected because damage may extend beyond the SL000166 upper cover.

Impact with Machinery and Structures

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

Repeated contact can gradually weaken the enclosure even where an individual impact does not immediately result in 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, fastening areas or locations exposed to repeated mechanical stress.

Where the damage is confined to the upper cover of a compatible 8-button NPA, SL000166 provides the corresponding TER replacement reference.

Inspecting the Upper Cover After Impact

Following impact, the SL000166 area should be checked for visible cracking, distortion and damage around the enclosure joints.

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

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

Inspecting the Enclosure Mating Surfaces

The surfaces where the 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 SL000166 is installed.

Importance of the Tightening Rubber

The tightening rubber supplied with the SL000166 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 SL000166 allows this component to be renewed at the same time as the upper enclosure.

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

Matching 8-Button NPA Enclosure Components

The 8-button NPA uses several dedicated enclosure components that work together to form the complete pendant housing.

SL000166 is the upper cover with tightening rubber, while the corresponding central enclosure section and lower enclosure are separate TER spare parts.

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

PRSL5826PI Central Section

For the standard 8-button TER NPA, the corresponding central enclosure section is TER PRSL5826PI.

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

A replacement SL000166 should not be expected to compensate for cracking, distortion or fastening damage in the adjoining central section.

SL000169R Lower Enclosure

The corresponding lower enclosure for the 8-button NPA is TER SL000169R.

The SL000169R lower enclosure is supplied with tightening rubber and screws and forms the lower section of the same eight-button pendant housing.

Where the pendant has experienced significant impact, both the 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 component, maintenance personnel can identify the affected section and determine whether individual replacement is technically appropriate.

The SL000166 provides the dedicated upper enclosure component for the 8-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 the 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 the internal switching components and wiring remain in satisfactory condition, replacing the SL000166 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 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.

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

This provides a safer environment for inspecting the internal components and replacing the SL000166 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 the applicable machine documentation.

This provides a useful reference during reassembly.

An 8-button pendant can contain considerably more internal wiring than a smaller pendant configuration, making clear identification particularly useful 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 Eight Control Positions

The eight 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 Pushbuttons

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 SL000166 upper cover does not correct an unrelated pushbutton fault, so these components should be assessed independently.

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 SL000166 upper cover itself provides an emergency-stop function or that every eight-button NPA necessarily 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.

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.

Eight-Button NPA Cable Entry

The 8-button NPA belongs to TER’s larger 8-to-12-button cable-entry group.

The complete NPA specification uses a rubber cable sleeve arrangement suitable for cable diameters from 17 mm to 26 mm for these larger pendant configurations.

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

TER PRSL9740PI Cable Sleeve Holder

The applicable TER cable sleeve holder for the 8-to-12-button NPA group is PRSL9740PI.

This component is separate from the SL000166 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 Correct Cable Position

The NPA cable sleeve arrangement is designed so that it can be angled to support a comfortable operator working position.

TER specifies that the cable sleeve can be angled by up to 20 degrees to improve visibility of the control elements and support a natural operating position.

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

Checking Cable Strain Relief

The cable should be mechanically supported so that external pulling forces are not unnecessarily transferred to the 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 SL000166 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 SL000166 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 normal 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 SL000166 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 SL000166 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 SL000166 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 SL000166 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 SL000166 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.

An eight-button pendant can provide multiple operator commands where a machine requires a broader control interface than smaller NPA configurations.

The SL000166 supports long-term maintenance of the upper enclosure used on these compatible pendant installations.

Overhead Travelling Crane Applications

Overhead travelling cranes can require several paired movement commands, making larger pendant configurations useful for many installations.

An eight-button NPA can provide the operator with access to the functions defined by the crane’s electrical and control design.

Where the upper enclosure becomes damaged, SL000166 provides the corresponding TER replacement component.

Gantry Crane Applications

Gantry crane pendant controls may be exposed to frequent handling, outdoor conditions and repeated movement around the operating area.

This can place ongoing mechanical demands on the pendant housing.

Replacing a damaged SL000166 upper cover can form part of planned refurbishment of an otherwise serviceable 8-button NPA.

Jib Crane Applications

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

The larger eight-button NPA provides capacity for a wider range of control positions where required by the system design.

The SL000166 supports maintenance of the corresponding upper enclosure.

Tower Crane Applications

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

Where an 8-button NPA is incorporated into an applicable control arrangement, maintaining the enclosure in good mechanical condition contributes to reliable long-term operation.

The SL000166 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.

SL000166 provides a dedicated upper enclosure spare for compatible 8-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 several clearly arranged operator commands within a portable pendant interface.

The SL000166 supports refurbishment of the upper enclosure where a compatible eight-button NPA is used.

Preventative Maintenance for the 8-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 causing 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 an 8-button TER NPA, SL000166 is an important upper enclosure replacement reference.

Keeping SL000166 as a Maintenance Spare

Facilities operating multiple eight-button NPA pendants may choose to keep SL000166 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 SL000166 Upper Cover with Tightening Rubber – NPA 8 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.

SL000166 Versus SL000165

The SL000166 should not be confused with TER SL000165.

SL000166 is specified for the 8-button NPA configuration, while SL000165 is the corresponding upper cover for the 6-button NPA.

The pendant button configuration should therefore be confirmed before ordering.

SL000166 Versus SL000164

TER SL000164 is intended for the 4-button NPA configuration rather than the eight-button pendant.

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

SL000166 should be selected specifically for the 8-button NPA.

SL000166 Versus NPA-CP Upper Covers

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

The 8-button NPA-CP uses a different upper enclosure reference and should not be assumed to use SL000166 simply because it also has eight control positions.

The pendant family should therefore be positively identified before replacement components are ordered.

SL000166 Versus PRSL5825PI

TER PRSL5825PI is the upper cover with tightening rubber for the 8-button NPA-CP pendant control station.

By comparison, SL000166 is the upper cover for the 8-button standard NPA auxiliary-control pendant.

This distinction is particularly important for service organisations working on 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 8-button TER NPA requiring replacement of its upper enclosure, the appropriate reference is SL000166.

This precise identification helps purchasing and maintenance teams avoid ordering an upper cover intended for another NPA size or the NPA-CP family.

Why Choose the TER SL000166?

The TER SL000166 provides a manufacturer-specified replacement upper cover for the 8-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, SL000166 offers a practical solution for maintaining established TER NPA installations.

TER SL000166 for Long-Term NPA Maintenance

The TER SL000166 Upper Cover for 8 Buttons supports the continued repair and refurbishment of compatible eight-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 SL000166 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 SL000166

The TER SL000166 upper cover forms a key structural section of the complete 8-button NPA pendant control station. While it does not perform an electrical switching function, it helps create the enclosure surrounding the pendant’s internal wiring, contact elements, actuators and associated control components.

Maintaining this upper enclosure in sound condition helps preserve the mechanical integrity of the pendant and supports continued protection of the internal assembly.

Where damage is limited to the upper cover, replacement with the correct SL000166 can support refurbishment of the pendant while allowing suitable existing internal components to remain in service.

Protecting the Internal Pendant Assembly

The complete NPA enclosure helps protect the internal electrical and mechanical components from everyday industrial handling and environmental exposure.

Conductors, terminals, contact elements and actuator mechanisms should remain enclosed and mechanically protected during normal operation.

A cracked or distorted upper cover can reduce the effectiveness of the enclosure and may indicate that additional inspection is required.

Mechanical Protection During Daily Operation

Eight-button pendant stations can be handled repeatedly throughout each working shift.

They may be moved across operating areas, suspended beside lifting equipment or carried while an operator follows a load.

This repeated handling places ongoing mechanical demands on the enclosure and makes periodic inspection important.

Recognising Signs of Upper Cover Damage

Common signs of deterioration can include cracking, distortion, broken corners, damaged edges or enclosure joints that no longer align correctly.

Even minor defects should be assessed because vibration and repeated handling can allow small problems to develop into more significant damage.

Where the defect is confined to a compatible 8-button NPA upper enclosure, SL000166 provides the correct TER replacement reference.

Inspecting the Pendant After a Drop

If the pendant has been dropped onto a hard floor or structure, the complete control station should be inspected rather than checking only the visible impact location.

Force from a drop can be transferred through the upper cover to the central section, lower enclosure, actuators, internal wiring and cable-entry components.

Replacement of the SL000166 should therefore form part of a broader condition assessment after a significant impact.

Repeated Impact and Swinging Damage

Suspended pendants can sometimes swing into surrounding structures, crane beams, machinery or loads during operation.

Repeated contact may initially produce only surface marks but can gradually weaken the enclosure.

Where recurring impact is evident, maintenance personnel should also consider whether the storage or operating arrangement can be improved.

Inspecting Corners and Edges

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

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

Damage near mating surfaces is especially important because it can interfere with correct enclosure assembly.

Inspecting the Upper Cover Mounting Areas

The upper cover must connect securely with the adjoining enclosure components.

Any damaged mounting surfaces or local distortion can interfere with correct assembly and should be addressed before installation of the replacement SL000166.

A new upper cover should not be forced onto a damaged adjoining section.

Checking the Central Section

The central section of the 8-button NPA should be inspected whenever upper cover damage has occurred.

TER PRSL5826PI is the corresponding central enclosure section for the standard eight-button NPA.

If this component is also cracked or distorted, a wider enclosure repair may be required.

Checking the Lower Enclosure

The lower enclosure should also be inspected after significant impact or crushing.

The matching lower enclosure for the eight-button NPA is TER SL000169R.

Damage to more than one enclosure section may change the most practical repair strategy.

Preparing the Pendant for Repair

Before the enclosure is opened, the associated machine should be placed in a safe condition and isolated according to applicable procedures.

This is particularly important where the pendant can command lifting, travelling or other equipment movements.

Only competent personnel should carry out the maintenance work.

Preventing Unexpected Machine Movement

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

Safe electrical isolation helps prevent unexpected machine operation while internal wiring and switching components are being inspected or moved.

Applicable lockout and isolation procedures should be followed before maintenance begins.

Removing the Existing Upper Cover

Once the machine is 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, pinched or damaged.

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

Cleaning Before Reassembly

Dirt and contamination should be removed from the enclosure mating surfaces before the replacement SL000166 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 nearby electrical parts.

Positioning the Tightening Rubber

The tightening rubber supplied with the SL000166 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.

Checking the Tightening Rubber Before Closure

Before the enclosure is fully reassembled, the technician should confirm that the tightening rubber remains correctly positioned around the relevant interface.

Any displacement should be corrected before the housing is closed.

Forcing the cover into place with the rubber incorrectly positioned can result in poor assembly.

Avoiding Enclosure Misalignment

The SL000166 should align naturally with the corresponding enclosure components.

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

Possible issues can include trapped wiring, damaged mating surfaces or incorrectly positioned internal components.

Avoiding Housing Distortion

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

Forcing mismatched components together can introduce additional stress and compromise the repair.

All relevant housing sections should be mechanically sound before recommissioning.

Checking Internal Wire Routing

Before the pendant is closed, all 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 also prevent correct closure.

Careful routing is particularly important in a larger eight-button pendant containing more internal connections.

Preventing Pinched Conductors

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

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

The complete internal arrangement should be checked 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 can be restored in accordance with the relevant machine documentation.

Using Photographs as a Service Reference

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

This is especially helpful in an eight-button pendant where a greater number of internal connections may be present.

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 operation even where the enclosure itself is in good condition.

Any abnormal condition should be corrected before the pendant is reassembled.

Inspecting Conductor Insulation

Electrical insulation should remain intact throughout the accessible wiring.

Cuts, abrasion, crushing or heat damage should be investigated.

A replacement upper cover should only be fitted after the technician is satisfied that the internal wiring is suitable for continued service.

Signs of Electrical Overheating

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

Replacing the SL000166 does not correct problems caused by poor connections 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 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 work.

Contamination should be removed using appropriate methods before reassembly.

Recurring contamination may indicate an additional issue that should be investigated.

Inspecting All Eight Control Positions

All eight 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 addressed before the SL000166 is installed.

Checking Pushbutton Movement

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

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

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

Inspecting Multi-Speed Pushbuttons

The NPA can be configured with pushbuttons providing one, two or three operating speeds depending on the selected arrangement.

Where multi-speed controls are fitted, each stage of actuator travel should be checked for consistent mechanical operation.

The corresponding electrical functions should then be verified during recommissioning.

Inspecting Contact Elements

The contact elements associated with each pendant control should remain securely fitted and suitable for service.

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

Functional testing should confirm reliable operation after the enclosure is reassembled.

Inspecting an Emergency-Stop Control if Fitted

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

The SL000166 is only an enclosure component and does not itself provide an emergency-stop function.

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

Inspecting Selector or Auxiliary Controls

Where selector switches or other actuator types 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 and splitting.

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

Inspecting the Cable Near the Pendant Entry

The cable section immediately adjacent to the pendant can experience significant 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 8-to-12-Button Cable Sleeve Arrangement

The 8-button NPA belongs to the larger 8-to-12-button cable sleeve group within the TER NPA family.

The corresponding cable sleeve holder for this group is TER PRSL9740PI.

This cable-entry arrangement should be inspected during refurbishment of an eight-button pendant.

Checking Cable Sleeve Angle

TER allows the cable sleeve arrangement to be angled to help support operator visibility and comfort.

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 SL000166 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 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 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 SL000166 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 performed under controlled conditions before the pendant returns to normal service.

Testing All Eight Control Positions

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

Testing all eight 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

Many crane and hoist applications use paired movement functions such as raise and lower, left and right or forward and reverse.

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

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

Testing Auxiliary Functions

Additional control positions may operate auxiliary equipment or other machine functions depending on the installation.

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

The purpose of each 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 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 checks should therefore be completed independently.

Documenting the SL000166 Repair

The replacement can be recorded within the machine’s maintenance history using the exact TER part number SL000166.

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, poor 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 position 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, remaining enclosure components, controls and internal wiring.

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

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.

SL000166 for Crane Maintenance Workshops

Crane maintenance workshops can identify SL000166 as a dedicated spare for repairing 8-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.

SL000166 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 eight-button NPA, the correct upper cover reference is SL000166.

SL000166 for Industrial Maintenance Departments

Industrial sites operating TER NPA pendants can include SL000166 within their internal spare-parts catalogue.

This can be especially useful where several identical 8-button pendants are installed on critical equipment.

Stocking decisions should reflect equipment criticality and previous maintenance experience.

SL000166 for OEM Spare-Parts Support

OEMs can list SL000166 within equipment manuals and aftermarket spare-parts documentation where an 8-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.

SL000166 for System Integrators

System integrators can use SL000166 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 SL000166 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 8-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 SL000166 helps preserve the original physical arrangement of the 8-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 SL000166 and identify it as the upper cover with tightening rubber for the standard 8-button NPA.

A generic description such as “TER 8-button upper cover” may not provide enough information to distinguish between standard NPA and NPA-CP configurations.

Exact product identification helps reduce ordering errors.

Recommended Ordering Description

A suitable purchasing description is “TER SL000166 Upper Cover with Tightening Rubber for 8-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 SL000166 provides the correct TER upper cover component for this process on a compatible standard 8-button NPA.

TER SL000166 as a Practical Maintenance Spare

The TER SL000166 provides maintenance departments, crane and hoist service companies, OEMs and system integrators with a precise spare-part solution for the standard 8-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 SL000166 can form an important part of long-term TER NPA maintenance and refurbishment programs.

Industrial Applications for the TER SL000166

The TER SL000166 Upper Cover for 8 Buttons supports the maintenance and refurbishment of compatible TER NPA pendant control stations used across a wide range of industrial lifting, crane, hoist, winch and machinery-control applications.

Because pendant controls are frequently handled and exposed to movement, impact, vibration, contamination and changing environmental conditions, enclosure components can require replacement even where internal electrical parts remain suitable for continued service.

The SL000166 provides the correct TER upper enclosure reference for the standard 8-button NPA configuration.

Overhead Crane Applications

Overhead travelling cranes often require multiple directional and auxiliary control functions, making larger pendant configurations useful for many installations.

An 8-button NPA can provide the operator with access to several machine commands arranged within one portable control station.

Where the upper enclosure becomes damaged, the SL000166 allows the affected housing section to be replaced while retaining serviceable internal components where appropriate.

Gantry Crane Applications

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

Outdoor or semi-outdoor installations may also expose the pendant to dust, moisture and changing temperatures.

Maintaining the upper enclosure in good mechanical condition helps support the continued integrity of the complete control station.

Jib Crane Applications

Jib cranes commonly use pendant controls for lifting and other local machine functions.

An 8-button configuration can provide additional command capacity where the equipment requires more than a simple raise-and-lower arrangement.

The SL000166 supports long-term maintenance of the corresponding standard TER NPA enclosure.

Tower Crane Applications

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

Where an 8-button NPA is incorporated into an applicable crane-control arrangement, enclosure condition should form part of routine maintenance.

The SL000166 provides a dedicated replacement upper cover where the original component has become cracked, worn or damaged.

Harbour Crane Applications

Harbour crane systems can operate in demanding environments where control equipment may be exposed to moisture, contamination and intensive use.

Regular inspection of the pendant housing, cable entry and actuator components is therefore important.

The SL000166 provides the correct upper enclosure spare for compatible 8-button NPA installations used in these environments.

Hoist Applications

Industrial hoists can use larger pendant configurations where several control functions are required beyond basic lifting and lowering.

An 8-button NPA can provide multiple commands within one operator interface depending on the machine design.

Where the upper housing is damaged, the SL000166 supports targeted refurbishment of the pendant.

Winch Applications

Industrial winches may use pendant control stations to provide local commands for winding, unwinding and associated auxiliary functions.

Because these pendants can be moved frequently during operation, their housings are exposed to repeated mechanical handling.

The SL000166 supports maintenance of compatible 8-button NPA pendants used in these applications.

Stage Technology Applications

TER also identifies stage technology as an application area for the NPA pendant family.

Stage lifting and movement systems may require multiple clearly arranged control commands within a portable operator interface.

The SL000166 supports refurbishment of the upper enclosure where an 8-button NPA is used in these systems.

Industrial Machinery Applications

The NPA pendant can also be used for auxiliary control of industrial machinery outside traditional crane and hoist applications.

An eight-position configuration can provide flexibility where several local machine commands must be available to the operator.

The SL000166 supports ongoing maintenance of the corresponding enclosure arrangement.

Material Handling Applications

Material-handling equipment can require several movement and auxiliary commands depending on the machine design.

An 8-button pendant can provide an effective handheld interface where multiple control functions are required.

The SL000166 supports repair and refurbishment where the upper enclosure becomes damaged during service.

Maintenance Workshop Applications

Industrial maintenance workshops servicing cranes, hoists and machinery can identify SL000166 as a dedicated spare for standard 8-button NPA pendant repairs.

Accurate part-number identification allows the correct enclosure component to be prepared before maintenance begins.

This can improve repair efficiency and reduce delays caused by incorrect spare-part selection.

Crane Service Organisation Applications

Crane service companies may encounter several TER pendant sizes and product families across different customer sites.

Recording the exact SL000166 reference helps distinguish the standard 8-button NPA upper cover from similar components.

This supports more accurate purchasing, inventory control and field service preparation.

Hoist Service Organisation Applications

Hoist service businesses often maintain equipment across numerous industries and installations.

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

For a confirmed standard 8-button NPA, the appropriate upper cover reference is SL000166.

OEM Aftermarket Support

Original equipment manufacturers that have supplied machinery fitted with an 8-button TER NPA can include SL000166 within their aftermarket spare-parts documentation.

This gives end users a precise replacement reference if the upper enclosure requires attention later in the machine’s service life.

Accurate documentation supports long-term equipment serviceability.

System Integrator Support

System integrators maintaining or refurbishing existing TER NPA installations can use SL000166 where the original 8-button pendant remains appropriate for the machine.

Replacing the damaged upper cover can help preserve the established operator interface and internal control arrangement.

Any change to machine control logic should remain separately engineered and documented.

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 unusable.

Daily Operator Inspection

Operators can contribute to pendant reliability by reporting visible damage before beginning work.

Cracked enclosure sections, loose components, damaged cables or controls that feel unusual should be investigated promptly.

Early reporting can prevent small defects from developing into more significant maintenance problems.

Inspecting for Repeated Impact

Scuffing, chips and surface marks can indicate that the pendant repeatedly contacts machinery or surrounding structures.

Even where the housing remains intact, repeated impact can shorten enclosure service life.

The operating and storage arrangement should be reviewed if this pattern is observed frequently.

Improving Pendant Storage

A designated pendant storage position can help reduce accidental drops, crushing and unnecessary contamination.

The control station should not be left where it can be driven over, trapped beneath equipment or struck by moving machinery.

Good storage practices can extend the service life of the SL000166 and the complete pendant.

Reviewing Pendant Cable Position

Poor cable positioning can contribute to excessive pendant movement and repeated impact.

If the control station routinely drags across surfaces or swings into surrounding equipment, the installation arrangement may require review.

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

Reducing Operator-Induced Damage

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

Operators should also avoid throwing or deliberately dropping the control station.

Careful handling can significantly reduce mechanical wear and prolong enclosure life.

Cleaning the SL000166 Upper Cover

The exterior of the upper cover can be cleaned as part of normal pendant maintenance using methods suitable for the complete NPA assembly.

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

Aggressive chemicals should not be used unless their compatibility has been established.

Cleaning Around Enclosure Joints

Dirt can accumulate around enclosure joints and mating surfaces during everyday industrial use.

Keeping these areas clean helps make cracks and other defects easier to identify during inspection.

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

Inspecting for Chemical Exposure

Some industrial environments expose pendant controls to oils, solvents, cleaning products or process substances.

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

Repeated chemical damage should prompt a review of cleaning practices and operating conditions.

Inspecting for Heat Damage

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

The source of the heat should be investigated before the new SL000166 is installed.

Replacing the enclosure without correcting the underlying cause can result in repeated damage.

Inspecting for Environmental Ageing

Long-term exposure to harsh industrial environments can contribute to enclosure ageing.

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

Age, contamination and repeated disassembly can affect its condition.

The tightening rubber supplied with SL000166 allows this component to be renewed at the same time as the upper enclosure.

Refurbishing an Older 8-Button NPA

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

This can include inspection of all eight actuators, contact elements, internal wiring, cable entry, central section and lower enclosure.

Addressing several developing issues during one planned service event can improve long-term reliability.

Replacing Multiple Worn Components

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

The SL000166 can form part of a wider refurbishment program for the 8-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 familiar to machine users.

This can be valuable on established equipment where operating procedures, labels and training materials are based around the original pendant.

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

Supporting Existing Electrical Documentation

Machine drawings and spare-parts lists often reference the original pendant arrangement.

Using SL000166 for the standard eight-button NPA helps keep the physical equipment consistent with this documentation.

This can simplify future fault diagnosis and maintenance.

Maintaining Spare-Part Standardisation

Sites operating multiple identical 8-button NPA pendants can benefit from standardising their spare-parts inventory.

Recording SL000166 as the common upper cover reference can reduce duplicate stock and ordering errors.

This also makes maintenance preparation more efficient.

Spare-Part Labelling

Stored SL000166 components should be clearly labelled with the TER part number and intended standard 8-button NPA application.

The supplied tightening rubber should remain together with the upper cover until installation.

Clear labelling helps prevent confusion with upper covers intended for other NPA configurations.

Spare-Part Storage

Replacement covers should be stored in a clean, dry area protected from unnecessary impact and contamination.

They should also be kept away from excessive heat or other conditions that could affect the enclosure or supplied tightening rubber.

Appropriate storage helps ensure the spare is ready for use when required.

Inventory Planning for Critical Equipment

Where an 8-button NPA is used on production-critical lifting or handling equipment, keeping an SL000166 in local stock may help reduce downtime following enclosure damage.

The appropriate stock quantity depends on the number of installed pendants, operating environment and consequences of equipment unavailability.

Maintenance history can help determine whether local stock is justified.

Ordering by Exact TER Part Number

The most reliable method of identifying this product is by the complete TER part number SL000166.

Generic descriptions such as “8-button pendant upper cover” can be ambiguous because TER offers multiple pendant families and enclosure configurations.

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.

The NPA-CP family can use different enclosure components even where the actuator count appears similar.

Correct pendant-family identification reduces the likelihood of ordering an unsuitable spare.

Confirming the Eight-Button Configuration

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

TER assigns separate upper cover references to different NPA configurations.

Checking the actuator count and existing equipment documentation helps ensure SL000166 is the correct replacement.

SL000166 Versus the 4-Button Upper Cover

The 4-button standard NPA uses TER SL000164 rather than SL000166.

Although both components perform a similar enclosure function, they correspond to different pendant sizes.

The correct cover should always be selected according to the actual NPA configuration.

SL000166 Versus the 6-Button Upper Cover

The 6-button NPA uses TER SL000165.

This component should not be substituted for SL000166 on an eight-button pendant.

Exact part-number identification helps prevent compatibility problems during refurbishment.

SL000166 Versus PRSL5825PI

PRSL5825PI is used as the upper cover for the 8-button NPA-CP configuration.

SL000166, by comparison, is intended for the standard 8-button NPA pendant.

This distinction is particularly important for service companies that support both pendant families.

Matching the Correct Central Section

The standard 8-button NPA uses TER PRSL5826PI as the corresponding central enclosure section.

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

Correct matching of the upper and central sections is essential to achieving the intended enclosure assembly.

Matching the Correct Lower Enclosure

The corresponding lower enclosure for the standard 8-button NPA is TER SL000169R.

This lower enclosure is a separate spare and should also be inspected if the pendant has been subjected to significant impact.

Together, the correctly matched enclosure sections form the complete pendant housing.

Fault Diagnosis Before Replacing the Upper Cover

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

Electrical problems can originate from contact elements, actuators, internal wiring or the pendant cable rather than the housing.

Accurate diagnosis helps prevent unnecessary component replacement.

When SL000166 Is the Appropriate Repair

SL000166 replacement is particularly appropriate where the upper enclosure is cracked, broken or mechanically damaged while the remaining NPA components are still suitable for service.

In this situation, the affected enclosure section can be renewed without unnecessary replacement of serviceable internal components.

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

When Electrical Faults Are Also Present

If electrical problems are identified during upper cover replacement, they should be corrected before reassembly.

These may include loose terminals, worn contact elements, damaged conductors or cable faults.

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

When Contamination Is Found Inside the Pendant

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

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

Correcting the underlying cause can help prevent repeated contamination.

When Multiple Enclosure Sections Are Damaged

If the upper, central and lower enclosure sections have all sustained significant damage, replacing only the SL000166 may not provide the most practical repair.

A wider enclosure refurbishment or complete pendant replacement may be appropriate.

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

When the Pendant Cable Is Severely Damaged

Severe cable damage requires separate corrective action.

The cable provides the electrical connection between the pendant and the machine control system and must remain mechanically and electrically sound.

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

When the Controls Are Heavily Worn

An older eight-button pendant may contain actuators or contact elements that have experienced significant wear.

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

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

Recommissioning After SL000166 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 actuators should also remain mechanically secure.

Testing Pushbutton Operation

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

Any abnormal movement following enclosure reassembly should be investigated.

The new upper cover 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 were moved during upper enclosure replacement.

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 operating stage should be tested.

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

Any missing or inconsistent stage should be investigated before the equipment is returned to normal operation.

Testing Auxiliary Commands

Additional buttons may be assigned to horns, enabling functions or other auxiliary machine controls depending on the installation.

Each should be verified against the applicable electrical documentation and control labelling.

The function of every actuator should remain clear before recommissioning.

Testing Safety-Related Controls

If the pendant includes an emergency-stop or another safety-related control, that function should be tested according to the relevant machine safety procedure.

Replacing the upper enclosure does not itself confirm that the safety function continues to perform correctly.

The equipment should not be released for service until all required checks are complete.

Recording the Repair

Maintenance records should identify SL000166 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 upper enclosure components typically remain in service under local operating conditions.

Frequent replacements may indicate harsh handling, recurring impact or challenging environmental exposure.

This information can support improvements in maintenance and operating 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 internal components and supports reliable operation.

The SL000166 contributes to this objective for compatible standard 8-button TER NPA pendants.

Reducing Avoidable Equipment Downtime

A damaged pendant can prevent an otherwise serviceable crane, hoist, winch or machine from operating.

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

For equipment using the standard 8-button NPA, SL000166 is therefore a useful spare to include within maintenance systems.

Supporting Sustainable Equipment Maintenance

Replacing only the damaged upper enclosure can sometimes avoid discarding a complete pendant that still contains serviceable electrical and mechanical components.

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

The suitability of refurbishment should always be confirmed by inspection of the complete 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 an 8-button NPA can use the TER part number and pendant configuration to identify the appropriate 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 complete control-station replacement.

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

Using correctly matched components helps preserve the intended pendant configuration.

Support for Existing NPA Installations

Established TER NPA pendant stations can remain in service for many years when maintained appropriately.

The SL000166 provides the specific upper enclosure reference for the standard 8-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 machine installations and refurbishment projects.

Where the original 8-button control arrangement remains appropriate, replacing the SL000166 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 SL000166, customers should provide the complete part number and confirm that the existing pendant is a standard 8-button TER NPA.

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

This is particularly useful at facilities operating several TER pendant families.

Recommended Purchasing Description

A clear purchasing description is “TER SL000166 Upper Cover with Tightening Rubber for 8-Button NPA Pendant.”

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

The part number SL000166 should remain the primary ordering reference.

Why Choose the TER SL000166 Upper Cover?

The TER SL000166 provides the correct manufacturer-specific upper enclosure for compatible standard 8-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 correct refurbishment using the intended TER component arrangement.

A Practical Spare for Industrial Maintenance

For maintenance teams responsible for cranes, hoists, winches and industrial machinery fitted with TER NPA pendants, SL000166 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 SL000166 supports this maintenance strategy by providing the dedicated upper cover for the standard 8-button NPA.

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

TER SL000166 Upper Cover for 8 Buttons

The TER SL000166 Upper Cover for 8 Buttons is a replacement upper enclosure designed specifically for compatible standard 8-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 SL000166 gives maintenance teams, OEMs, service organisations and system integrators a precise spare-part reference for dependable long-term pendant refurbishment and support.

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