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2 www.prideservice.com Lift Chair Technical Troubleshooting Guide

TECHNICAL TROUBLESHOOTING GUIDE SUPPLEMENT

Please read and follow all instructions in this Technical Troubleshooting Guide before attempting to troubleshootor repair any Pride Mobility product for the first time. If there is anything in this Technical Troubleshooting Guidethat you do not understand, or if you require additional assistance, contact Pride Technical Service at 1-877-800-1248.

Troubleshooting and repair of any Pride Mobility product safely depends on your diligence in following the in-structions within this guide. Pride is not responsible for damage and/or injuries resulting from a person's inabilityto follow the instructions in this guide. Pride is not responsible for injuries or damage resulting from a person'sfailure to exercise good judgement and/or common sense.

The symbols below are used throughout this guide to bring to your attention any information needed to completethe troubleshooting scenarios.

© Pride Mobility Products Corp. 2006Rev. C/Feb06/INFMANU2721

WARNING! Failure to heed the warnings may result in personal injury.

Hints, tips, and alternative tests.

The toolbox designates solutions to a given troubleshooting scenario.

S A F E T Y G U I D E L I N E S

Lift Chair Technical Troubleshooting Guide www.prideservice.com 3

TECHNICAL TROUBLESHOOTING GUIDE SUPPLEMENTTABLE OF CONTENTSTABLE OF CONTENTSTABLE OF CONTENTSTABLE OF CONTENTSTABLE OF CONTENTS

Lift Chair Setup ...................................................................................................................... 4External Transformer System Set Up ....................................................................................... 4External Transformer Heat and Massage System Set Up ......................................................... 5Knock-Down (KD) Lift Chair Out-of-Box Set Up .................................................................. 6Knock-Down (KD) Lift Chair Heat and Massage Out-of-Box Set Up .................................... 7

Electronics/Scissor Mech’s ..................................................................................................... 9Hand Controls/Relay Boxes ..................................................................................................... 9Control Boxes ......................................................................................................................... 11Scissor Mechanisms................................................................................................................ 12

Lift Chair Diagnostics .......................................................................................................... 15Situation 1 — Chair has no power.......................................................................................... 15Situation 2 — Chair is plugged in, but will not lift or recline ............................................... 18Situation 3 — Dual motors not working properly .................................................................. 20Situation 4 — Motor area is warm when chair is not in use .................................................. 21Situation 5 — Battery backup system is not working ............................................................ 21Situation 6 — Chair will not move (Hand Controls) ............................................................. 22Situation 7 — Footrest will not come up................................................................................ 24Situation 8 — Footrest fails to extend completely on Infinite chairs .................................... 25Situation 9 — Footrest extends more on one side than the other........................................... 25Situation 10 — Wallhugger footrest is catching..................................................................... 26Situation 11 — Squeaking noise from frame ......................................................................... 26Situation 12 — Chair is leaning ............................................................................................. 26Situation 13 — Frame is catching and hesitating ................................................................... 27Situation 14 — Chair is twisting ............................................................................................ 27Situation 15 — GL545, GL555, TMR 540 motors work but the chair will not move .......... 28Situation 16 — Chair is dropped ............................................................................................ 28Situation 17 — Cracking noise............................................................................................... 29Situation 18 — Standard heat and massage stops working .................................................... 29Situation 19 — Deluxe heat and massage stops working ...................................................... 32Situation 20 — Stains on fabric .............................................................................................. 34Situation 21 — Wrinkles in fabric .......................................................................................... 34Situation 22 — Broken down foam ........................................................................................ 34



EXTERNAL TRANSFORMER SYSTEM SET UPSee figures 1 and 2.

LIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUP

Figure 1. External Transformer Box

TO WALL

Figure 2. Battery-Powered Backup System Location (Stan-dard)

BATTERYDOORLOCATION

3. Adjust the leg levelers to keep the chair stable.4. Turn the leg levelers clockwise to lower the chair and counterclockwise to raise the chair.5. Position the low voltage connection cable, located at the back of the chair, where it will not be pinched between

the wood frame and the lift mechanism. If the low voltage connection cable is not already connected to theexternal transformer, connect it at this time.

6. Ensure the external transformer, power cord, and the low voltage connection cable are not damaged or wet.

WARNING! Reduce the risk of electric shock. Unplug the lift chair before installing or replacing the batteries. Failure toheed could result in personal injury and/or damage to the lift chair.

7. Install two new 9V batteries (not included) in the top of the transformer as shown in figure 2.

The external transformer is packaged independently on the lift chair. Please do not discard any packaging before locat-ing the external transformer.

1. Place the lift chair near a properly wired standard wall outlet. This chair is designed for indoor use only.2. While in the seated position, place the back of the lift chair 30 inches (75 cm) from the nearest obstruction.

The Wallhugger Lift Chair (LL805) only requires 4 inches (10 cm) of space behind the lift chair to the nearest obstruction.

If a problem is discovered, STOP and contact your local Pride Provider immediately.

8. Plug the power cord directly into the wall outlet. Do not use an extension cord!9. Lay the external transformer on the floor in an open, well-ventilated area where it will not be an obstruction.

TO MOTOR ANDHAND CONTROL

EXTERNALTRANSFORMER

POWER CORD

LOW VOLTAGECONNECTIONCABLE


TECHNICAL TROUBLESHOOTING GUIDE SUPPLEMENTLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUP

Figure 3. External Transformer Box

TO MOTOR


H/M TRANSFORMER

POWER CORD

TO WALL

EXTERNAL TRANSFORMER HEAT AND MASSAGE SYSTEM SET UPSee figures 3 and 4.

8. Plug the power cord directly into the wall outlet. Do not use an extension cord!9. The green light on the transformer is lit to indicate proper operation. The blinking red light indicates that no

batteries are installed or battery power is low. If the red light is blinking, unplug the transformer and go to step7.

10. Lay the external transformer on the floor in an open, well-ventilated area where it will not be an obstruction.

3. Adjust the leg levelers to keep the chair stable.4. Turn the leg levelers clockwise to lower the chair and counterclockwise to raise the chair.5. Position the low voltage connection cable, located at the back of the chair, where it will not be pinched between

the wood frame and the lift mechanism. If the low voltage connection cable is not already connected to theexternal transformer, connect it at this time.

6. Ensure the external transformer, power cord, and the low voltage connection cable are not damaged or wet.

1. Place the lift chair near a properly wired standard wall outlet. This chair is designed for indoor use only.2. While in the seated position, place the back of the lift chair 30 inches (75 cm) from the nearest obstruction.

7. Install two new 9V batteries (not included) in the bottom of the transformer as shown in figure 4.

The external transformer and 3-prong power cord are packaged independently on the lift chair. Please do not discardany packaging before locating the external transformer and 3-prong power cord.

The Wallhugger Lift Chair (LL805) only requires 4 inches (10 cm) of space behind the lift chair to the nearest obstruction.

When using the hand control to move the lift chair, the heat and massage options will temporarily shut down. Normalfunction returns when chair motion is stopped.

If a problem is discovered, STOP and contact your local Pride Provider immediately.

WARNING! Reduce the risk of electric shock. Unplug the lift chair before installing or replacing the batteries. Failure toheed could result in personal injury and/or damage to the lift chair.

Figure 4. Battery-Powered Backup System Location(Heat and Massage)

BATTERYDOORLOCATION


TECHNICAL TROUBLESHOOTING GUIDE SUPPLEMENT LIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUP

Figure 5. Knock-Down(KD) Position

Figure 8. Position Lock

"CLICK"

CHAIR BACK

Figure 6. Locking ClipPosition

Figure 7. Sleeve andBracket Connections

Figure 9. Back Hook andLoop Flaps (Installation)

Figure 10. Back Hook andLoop Flaps (Removal)

Figure 12. Chair BackRemoval

Figure 11. Clip Lifting

MALE KDBRACKET

LOCKINGCLIP

REARBRACKETSLEEVE

ARMS AND SEAT

3. Push firmly on the top of the chair back to lock into position. Listen for a click on each side to ensure the chair back islocked in properly. See figure 8.

KNOCK-DOWN (KD) LIFT CHAIR OUT-OF-BOX SETUPThe lift chair will arrive packaged in the KD position. See figure 5.

The illustrations shown do not reflect all lift chair models.

1. Remove packaging and check to ensure the locking clip is in the vertical position. Reposition if necessary. See figure 6.2. Slide the left and right rear bracket sleeves of the chair back onto the male brackets on the arms and seat of the chair. See

figure 7.

To Attach the Back Portion of the Lift Chair:

Due to the chair width, you may have to slide on one side of the chair back at a time. If so, level the chair back beforepressing down to lock into position.

Pull up on the chair back to ensure that it is locked in place. If the back can be pulled off, then repeat back portioninstallation.

You will have to do this step one side at a time due to the width of the chair.

3. Lift the chair back up from the base of the chair. See figure 12.

4. Attach the chair back fabric to the hook and loop flaps on the bottom of the chair base. See figure 9.

To Remove the Back Portion of the Lift Chair:1. Remove the bottom of the back fabric from the hook and loop flaps on the chair base. See figure 10.2. Using a large flat head screwdriver, lift the left and right clips of the chair back to raise the back from the brackets on the

chair base. As you lift the clip, pull up on the back to lift that side over the lock. See figure 11.


TECHNICAL TROUBLESHOOTING GUIDE SUPPLEMENTLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUP

KNOCK-DOWN (KD) LIFT CHAIR HEAT AND MASSAGE OUT-OF-BOX SETUP

1. Remove packaging and check to ensure the locking clip is in the vertical position. Reposition if necessary. See figure 14.2. Slide the left and right rear bracket sleeves of the chair back onto the male brackets on the arms and seat of the chair.

See figure 15.

To Attach the Back Portion of the Lift Chair:

The lift chair will arrive packaged in the KD position. See figure 13.

The illustrations shown do not reflect all lift chair models.

Figure 15. Sleeve and Bracket Connec-tions

Figure 13. Knock-Down (KD) Position Figure 14. Locking Clip Position

CORRECT

INCORRECT

Figure 16. Position Lock

CHAIR BACK

"CLICK"

3. Push firmly on the top of the chair back to lock into position. Listen for a click on each side to ensure the chair back islocked in properly. See figure 16.

Due to the chair width, you may have to slide on one side of the chair back at a time. If so, level the chair back beforepressing down to lock into position.

Pull up on the chair back to ensure that it is locked in place. If the back can be pulled off, then repeat steps 1, 2, and 3.

MALE KDBRACKET

LOCKINGCLIP

REARBRACKETSLEEVE

ARMS AND SEAT


TECHNICAL TROUBLESHOOTING GUIDE SUPPLEMENT LIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUPLIFT CHAIR SETUP

KNOCK-DOWN (KD) LIFT CHAIR HEAT AND MASSAGE OUT-OF-BOX SETUP4. Once the back is attached, locate the quick release connections for the heat and massage options in the back of the chair.

Plug them together until they lock. See figure 17.5. Attach the chair back fabric to the hook and loop flaps on the bottom of the chair base. See figure 18.

To Remove the Back Portion of the Lift Chair:1. Remove the bottom of the back fabric from the hook and loop flaps on the chair base. See figure 19.2. Locate the heat and massage quick release connections and pull apart prior to doing step 3. See figure 17.

3. Using a large flat head screwdriver, lift the left and right clips of the chair back to raise the back from the brackets on thechair base. As you lift the clip, pull up on the back to lift that side over the lock. See figure 20.

4. Lift the chair back up from the base of the chair. See figure 21.

The heat pad connection is labeled “heat” and the massage unit connection is not labeled. The LL450 and C30 model liftchairs come standard with two heat pads. On KD (knock down) deluxe heat and massage units, the upper massage unit islabeled with a red letter A label while the lower massage unit is labeled with a blue letter B.

Grip plastic ends when disconnecting the heat and massage connections. Do not grip wires.

You will have to do this step one side at a time due to the width of the chair.

Figure 20. Clip Lifting

MASSAGE

HEAT

Figure 17. Quick ReleaseConnection Locations

Figure 21. Chair Back Removal

Figure 18. Chair Back Hook and LoopFlaps (Installation)

Figure 19. Chair Back Hook and LoopFlaps (Removal)



Figure 22. Plastics/Electronics Figure 23. Cables/Connectors

Hand Controls/Relay Boxes

The quick release hand control has similarities and differences to the standard hand control.

The electronics, plastics, and curly cords are the same for both styles of hand controls. See figure 22.

The quick release hand control has a straight molded connector on the end. The standard hand control has a 90-degree molded connector on the end. These two hand controls are not interchangeable due to the end connectors.The straight cable lengths are different for both hand control versions. See figure 23.

Quick release hand controls have a connector cable that connects the hand control to the motor control box. Theconnector cable and hand control cable are lined up, pressed together, and snapped in place. See figure 24.

STANDARDQUICK RELEASE STANDARDQUICKRELEASE

CABLES

CURLY CORDS

PLASTICS

90°CONNECTOR

STRAIGHTCONNECTOR

Figure 24. Connector Cable Hookup

CONNECTORCABLE

HANDCONTROLCABLE

ELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’S



The deluxe heat and massage hand control has one red push button (“heat on/off ”) and three blue massagecontrol push buttons (“on/off ,” “low/med/hi ,” “constant/pulse/wave ”). See figure 25. See figure26 for the massage unit and heat pad. See figures 27 and 28 for the relay boxes.

Figure 25. Deluxe Heat and Massage Hand Control

LED FOR LIFT/FOOTREST (660, 670MODELS ONLY)

TOGGLE SWITCH PUSH BUTTON FOR INFINITEPOSITION CHAIRS (660, 670MODELS ONLY)

RED HEAT (ON/OFF)

BLUE MASSAGE (ON/OFF)

BLUE MASSAGE (LOW/MED/HI)

BLUE MASSAGE (CONSTANT/PULSE/WAVE)

LED FOR BACK/RECLINE(660, 670 MODELS ONLY)

Figure 28. Relay Box (Infinite Motor)

TO MOTOR 1

TO MOTOR 2 TO DELUXE H/M CONTROL BOX

Figure 27. Relay Box (Single Motor)

TO LIFT MOTOR

TO DELUXE H/M CONTROL BOX


Figure 26. Massage Unit andHeat Pad

HEAT PAD

MASSAGE UNIT



Control boxes are used to control the current going to the motors and the heat/massage units. The standard controlbox (see figure 29) will house the relays and a dipswitch. See figures 30 and 31. The number of relays and dipswitchsetup will vary depending on application. The dipswitch can be modified if necessary. The rear door is removed foraccess. The blue dipswitch will have six positions, with UP being toward ON. The deluxe heat/massage controlbox is used for single and infinite motors and has no dipswitch adjustments. See figure 32.

Single motor, heat/massage, control box (ELEASMB3004) dipswitch setup: 1-2 UP, 3-4 DOWN and 5-6 UP. Usedonly for two or three-position models with standard heat/massage. See figure 30 for dipswitch setting 1.

Dual motor, no heat or massage, control box (ELEASMB3614) dipswitch setup: 1-2 UP, 3-4 DOWN and 5-6 UP.Used on 545 and 555 models. See figure 30 for dipswitch setting 1.

Infinite motor, no heat or massage, control box (ELEASMB3444) dipswitch setup: 1-2 DOWN, 3-4 UP and 5-6DOWN. Used on 660 and 670 models. See figure 31 for dipswitch setting 2.

Dual motor, heat and massage, control box (ELEASMB3615) dipswitch setup: 1-2 UP, 3-4 DOWN and 5-6 UP.Used on 545 and 555 models. See figure 30 for dipswitch setting 1.

Infinite motor, heat and massage, control box (ELEASMB3616) dipswitch setup: 1-2 DOWN, 3-4 UP and 5-6DOWN. Used on 660 and 670 models. See figure 31 for dipswitch setting 2.

Control BoxesELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’SELECTRONICS/SCISSOR MECH’S

Figure 29. Control Box

Figure 32. Deluxe H/M Control Box (Single/Infinite Motor)

TO DELUXE H/M RELAY BOX

TO EXTERNAL TRANSFORMER CABLE

TO HAND CONTROL

TO HEAT PADS

TO MASSAGE UNITS

Figure 31. Dipswitch Setting 2(Infinite Motor H/M and InfiniteMotor no H/M)

ON

1 2 3 4 5 6

Figure 30. Dipswitch Setting 1(Single/Dual Motor H/M and DualMotors no H/M)

ON

1 2 3 4 5 6



Pride Lift Chairs are equipped with six types of scissor mechanisms: two-position, two-position (GL555), three-position, three-position (KD), infinite position, and the TMR575 (footrest extension). These take the chairs throughvarious degrees of recline. Two-position mechanisms raise the footrest and recline the back to a 45 degree angle atthe same time. Three-position scissors allow the footrest and the back to work simultaneously until the footrestreaches its ultimate height, where the back will recline to approximately 65 degrees. Infinite position scissormechanisms let the footrest and the back work independently. The TMR 575 has an extended footrest to accommo-date taller users. The footrest can raise without any back movement, and they also allow the back to recline thechair into a virtually horizontal sleeping position. See figure 33 - 39.

Scissor Mechanisms

Figure 33. Two-Position Scissor Mechanism

Figure 34. Three-Position Scissor Mechanism




Figure 35. Infinite Position Scissor Mechanism

Figure 37. KD Three-Position Scissor Mechanism (for all KD three-position chairs)

Figure 36. TMR 575 Scissor Mechanism (with footrest extension)




Figure 38. Two-Position GL555 Scissor Mechanism

Figure 39. TMR 575 KD Scissor Mechanism (with footrest extension)




The lifting mechanism is comprised of a low voltage electric motor and a control box/transformer that transformsthe high voltage (120VAC) to 24-30VDC. Internally there is an acme screw/worm gear system that pushes thechair to the lift position and pulls it to recline. The motors are equipped with an integrated battery backup systemto assist the user out of the chair during a power failure. Pride Lift Chairs made after January 2004 have externaltransformers and low voltage heat and massage. See figures 40 through 43.

External Transformers

Figure 42. Lift Chair Motor (Dual)

TO WALL OUTLET

BATTERY BACKUPLOCATION

TRANSFORMER

MOTORS


TO WALLOUTLETTRANSFORMER


POWER CORD


MOTOR

Figure 40. Lift Chair Motor (Heat and Massage)

POWER CORD

Figure 43. Lift Chair Motor (Infinite)

POWER CORD

BATTERYBACKUPLOCATION

TO WALLOUTLET

MOTOR

TRANSFORMER


MOTOR TO WALLOUTLET

POWER CORD


LOW VOLTAGECONNECTION CABLE

TO HANDCONTROL

TRANSFORMER

Figure 41. Lift Chair Motor (Standard)

LIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICS

Situation 1Chair has no power



1. HOT

2. RECLINE3. LIFT

HOT

GROUND

5. MASSAGE

4. HEAT

Figure 44. Control Box/Standard External Transformer(no H/M)

If the lift chair has no power, try the following steps to identify the problem.

Check the power source. Follow the cord to the wall outlet and make sure that it is firmly plugged into theoutlet. Test the outlet with another appliance or a multimeter to ensure the outlet is active.

If the motors on the standard, dual, or infinite lift chairs are not working properly, start with the electronics assem-bly/transformer.

1. Check the motor voltage. Unplug the hand control from the control box or transformer. With a multimeter setto 200VDC, place the RED lead into pin 1. See figure 44.

2. Place the BLACK lead into pin 2. The meter should read 38VDC +/-10%. See figure 44.3. Next, place the BLACK lead into pin 3 and take a reading. The meter should also read 38VDC +/-10%. See

figure 44.

The meter reads_________volts.

To test the old style control box and standard external transformer (no heat/massage):

1. Disconnect the control box from the transformer. Set the multimeter to 200VDC.2. Place the BLACK lead onto pin 1 and the RED lead onto pin 3 of the transformer. The meter should read

38VDC +/-10%. See figure 45.

To test the heat/massage external transformer:

When the heat/massage external transformer is plugged into the wall outlet, the green power light will be on. The redlow battery light will flash when no batteries are in the transformer, or when battery power is low.

If the reading is not 38VDC +/-10%, replace the electronics assembly/transformer.



Examine the power cord from the control box to the wall outlet for crimps, cuts, or cracks. If the CORD is damaged,replace the cord or the external transformer.


1. -

3. +

2.

Figure 45. H/M ExternalTransformer Pins


TECHNICAL TROUBLESHOOTING GUIDE SUPPLEMENTLIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICSLIFT CHAIR DIAGNOSTICS

1. Check the voltage from the control box. With power going to the controlbox, disconnect the 10-pin lift connector from the control box.

2. Set the multimeter to 200VDC. Place the RED lead in pin 9 and the BLACKlead in pin 10 of the lift connector in the control box. The meter should read38VDC +/-10%. See figure 47.

To test the deluxe heat/massage control box:


If the reading is not 38VDC +/-10%, replace the control box.

Figure 47. 10-Pin Lift Connector

12345

1096 7 8

1. Disconnect the control box from the transformer. Set the multimeter to200VDC.

2. Place the RED lead in the large blade prong and the BLACK lead in the smallcircular pin of the transformer. The meter should read 38VDC +/-10%. Seefigure 46.

To test the dual/infinite external transformer (no heat/massage options):

The meter reads_________volts Figure 46. Dual/Infinite Exter-nal Transformer

+ -




If the lift chair is plugged in and the lift or recline functions are not operational, check the following steps toidentify the problem.

1. Examine the physical appearance of the motor. Unplug the power cord and flip the chair onto its side or back.Check the bottom clevis (rear motor connection at the base of the lift frame) for breaks. If the clevis is notbroken, check the top connection of the motor shaft to the upper portion of the frame. Make sure that the pin isattached firmly.

RED LEADBLACK LEAD

Figure 48. 2-pin motor plug

If this reading is outside tolerance, replace the motor.

The meter reads_________ohms

2. Examine the stroke tube for cracks and breaks.

Replace the motor if the clevis is worn, cracked, or broken.

If damaged or broken, replace the motor.

3. Return the chair to the upright position, plug into wall outlet, and listen for clicking or humming noises comingfrom the control box.

4. Unplug the chair from the power source and disconnect the 2-pin motor plug from the control box or Y-cable.Take an ohm reading across the two pins of the plug. With the meter set to a minimum scale of 2 Megaohms,put the BLACK lead on the blade prong of the plug and the RED lead on the small circular pin. The readingshould indicate approximately 1.2 Megaohms or higher in this direction and zero ohms with the leads reversed.See figure 48.

If a clicking noise is present in the control box, there may be a malfunctioning relay. Replace the control box.

A humming sound may be caused by a shorted motor. Perform a continuity test on the motor with a multimeter.


Situation 2Chair is plugged in, but will not lift or recline




For relay boxes with two motor connections, select the back/recline position onthe hand control. Perform the same tests on the second motor (see figure 51), thesame voltages should be found.

Figure 50. Relay Box (Single Motor) Figure 51. Relay Box (Infinite Motor)

TO MOTOR 1

TO MOTOR 2 TO DELUXE H/M CONTROL BOX

TO LIFT MOTOR

TO DELUXE H/M CONTROL BOX


On newer generation motors used for dual/infinite models, the motor will have a curly cord. Unplug the chair fromthe wall outlet and disconnect the 2-pin motor plug from the control box. With the multimeter set to the 200 ohmscale, take a reading across both pins of the motor. The reading should indicate 1.5 — 3 ohms. See figure 49.

Deluxe heat and massage lift chairs have a relay box that provides the voltage to one or two motors (units withexternal transformers).

1. Disconnect the 2-pin motor connection from the relay box.2. Set the multimeter to 200VDC. Place the BLACK lead in the blade prong and the RED lead in the smaller slot

of the 2-pin relay box connection. The voltage should read 0VDC. See figure 49.

To test the relay boxes for one motor connection (see figure 50) and dual motor models with the lift switch formotor 1 selected on the hand control (see figure 51):

4. On the hand control, hold the toggle switch in the down/recline position. The polarity of the voltage willchange from the previous reading.

3. On the hand control, hold the toggle switch in the up/lift position. The voltage should read over 38VDC +/-10%.



If no voltages are found or the polarity does not change, replace the relay box.


If this reading is outside tolerance, replace the motor.

+-

Figure 49. 2-PinMotor Plug



The TMR 540 dual motor system may be malfunctioning because themotors are out of time.

1. Unplug one of the motors from the control box.2. Disconnect the stroke tube from the top of the frame.3. With the hand control, run the connected motor up or down until

the heavy weight pivot bar is parallel with the lift frame.4. Now, disconnect the remaining motor from the control box and re-

connect the motor that was removed in step 1.5. With the hand control, run that motor to where it will hook back up

with the top of the frame.6. Plug both motors back into the control box and test.7. If the motors do not stay in time, replace the motor assembly.

Dual motor systems (models GL545, GL555) may be malfunctioningbecause the motors are out of time.

1. Activate the hand control on the lift chair. If there is no movementin either direction, check if the motors are out of sync and that thepressure-sensitive safety switch has been activated. Out-of-sync mo-tors will show one motor extended farther than the other and apinched safety switch. See figure 52.

2. If the motors are out of sync, disconnect one of the two red safetyswitch plugs from the motor control box. See figure 53.

3. Press the hand control in the UP position until the chair reaches thefull lift position. This will reset the motor position and correct thetiming. See figure 54.

4. Reconnect the red safety switch plug into the motor control box.See figure 53.

In order to preserve the correct motor timing, it is recommended to extendthe lift chair to the full lift position when getting in and out of the chair.

Figure 52. Out-of-Sync Motors

Figure 53. Safety Switch Plugs

Figure 54. Reset Motor Timing

SAFETYSWITCH

MOTORS

RED PLUGS

SAFETYSWITCH

MOTORS

MOTOR CONTROL BOX


Situation 3Dual motors not working properly



Situation 4Motor area is warm when chair is not in use

Situation 5Battery backup system is not working

The battery backup system is designed to bring the chair back to the seated position to allow easier exit from thechair.

The batteries may be dead. Be sure to change the batteries every six months or after every time they are activatedduring a power failure.

Lift chair motors can still be warm when not in use. It is likely there is no problem. The control box may remainwarm when the chair is plugged into a power source.

If it is hot to the touch, a malfunction may be apparent in the control box. Replace the motor assembly on older models.For newer models, replace the external transformer.

Check the battery leads. If the battery leads are broken, detached, or cracked, replace the electronics assembly/transformer.

Notes:




REDYELLOW WHITE

Figure 55. ToggleSwitch

Pride Lift Chairs are operated with a low voltage hand control comprised of a toggleswitch, control cord, and a two-part plastic case. Perform the following procedure if thehand control is not working properly and the lift chair is not moving.

This test is only to be performed on hand controls out of warranty.

1. Check the toggle switch. See figure 55. Push the switch up and down. If the switchsticks or does not operate smoothly, replace the toggle switch.

2. Test the switch by jumping it.3. Depending on the hand control, either remove the four (4) Phillips screws from the

hand control or use a flat head screw driver to separate the clipped case and exposethe switch (if no screws are visible).

4. Plug the power cord into a wall outlet. Using an insulated screwdriver (plastic, rub-ber, or wooden handle) or jumper wire, carefully short the center prong to one of theouter prongs. If the chair moves, short from the center prong to the other prong.

5. Check the controller cord.

WARNING! Do not jump across all three terminals at the same time as motor damage may occur. Use only an insulatedscrewdriver or a jumper wire to avoid shock and damage to the motor.

If the chair operates by this method, replace the toggle switch.

If the switch is functioning, examine the cord’s appearance for cracks, cuts, or crimps. If the cord is severed or crimped,replace entire hand control.

6. Check for internal damage to the wires by removing the housing. Switch the top wire (WHITE) and the bottomwire (YELLOW).

If the chair operates in the malfunctioning direction once the wires are switched, there is most likely a severed wireinside of the cord. Replace the entire hand control.


Situation 6Chair will not move (Hand Controls)



To test the continuity of the hand control (excluding deluxe heat/massage models):

1. Unplug the chair from the power source and disconnect the hand control from the controlbox.

2. Using a multimeter set to 200 ohms scale, place the RED lead on pin 1, then place theBLACK lead on pin 2. See figure 56.

3. Press the switch in the down position. A reading of zero (0) ohms means the hand con-trol is operating properly in the recline position.


If the tests fail, replace the hand control or the toggle switch.

To test the deluxe heat/massage hand control (units with external transformers):

1. With power to the control box, disconnect the 10-pin lift connector from thecontrol box.

2. Set the multimeter to 200VDC. Place the BLACK lead in pin 10 and the REDlead in pin 7 of the lift connector. The voltage should read 0VDC. See figure57.

3. On the hand control, press and hold the toggle switch in the up/lift position. The voltage should read approxi-mately 5.4VDC.


4. Move the RED lead to pin 8 of the lift connector. The voltage should read 0 VDC. See figure 57.



5. On the hand control, press and hold the toggle switch in the down/recline position. The voltage should readapproximately 5.4VDC.


If voltage is not found when the switch is in the lift or recline positions, replace the hand control.

4. Move the BLACK lead to pin 3 and press the switch in the up position. A reading of zero (0) ohms should beread, indicating the hand control is operating properly in the lift position.


Figure 56. HandControl Plug Pins


45 1

23

12345

106 7 8

Figure 57. 10-Pin Lift Connector

9



Situation 7Footrest will not come up

1. Turn the chair on its back and examine the scissors for bends or breaks.

If the footrest on the lift chair is not fully extending, the scissors may be bent or catching. Check the followingprocedure to identify the problem.

2. Look for wear in the paint on the rivets and the bars on the scissors.

If the scissors are broken or bent, replace them on both sides.

6. Examine the wood and the lift frame near the scissors for scrapes or damage. The problem may lie with theminstead of the scissors. If the chair is leaning, the scissor bolts may be loose. With a 3/8-inch wrench or 7/16-inch wrench, tighten all the bolts on the inside and outside of the scissors. Examine the scissors for bends orbreaks.

If there is excessive wear or the bars are not riding on the rivets, the scissors must be replaced on both sides.

3. Check the side bracket pins for breaks in the welds. If there are no bends or breaks and the side bracket pins arefine, the problem may lie in the lift frame.

If the welds are broken, severe damage to the scissor mechanisms may occur. The scissors must be replaced.

4. If there is a squeaking or creaking noise, check to see if the scissor bolts are tight.

If the bolts are not tight, use a 3/8-inch wrench or 7/16-inch wrench to tighten the bolts.

5. The sounds may be coming from dry joints in the scissors. If so, use a lubricant to dampen the noise.

If they are bent or broken, replace the scissors on both sides. Check the side bracket pins to see if they are intact. Re-place them if the pins are loose or broken.

7. Examine the wood and metal frames.

If the noise continues, the joints may be worn and need to be replaced.

Broken wood or a worn frame may cause the chair to lean.




Situation 8Footrest fails to extend completely on Infinite chairs

1. Make sure that the nut connecting the T-linkage to the scissors is tight. The footrest will not raise properly if thenut is very loose.

2. Check for any bends or broken welds.

Examine the side bracket pins for looseness.

If there are any bends or breaks, the frame must be replaced.

If the footrest does not completely extend on Infinite Series lift chairs, check the following procedure to identifythe problem.

3. Thoroughly look over the scissors for bends or breaks.

If broken or bent, replace the scissors.

4. A worn stroke tube on the master motor may also prohibit the footrest from raising properly.

If the stroke tube is loose or worn, tighten it back down onto the yoke or replace it.

Situation 9Footrest extends more on one side than the

otherIf the footrest extends more on one side than the other, check the following procedure to identify the problem.

Check all of the bolts and screws, inside and outside, for breaks and looseness. The bolts and screws must be firmlyfastened to ensure smooth action of the scissors.

The scissors must be mounted forward on the bolts.

A missing or broken screw may cause the scissors to slide back on the bolts. The scissors must be pushed forward onthe bolts and that screw must be replaced.

If the side bracket pins are loose or broken, they must be replaced.




Situation 10Wallhugger footrest is catching

If the footrest on the Wallhugger lift chair is catching, check for bends and wear.

The scissor mechanisms and the frame on the Wallhugger (LL805) are one unit.

If any excessive wear, bends, or breaks are apparent, the entire lift mechanism must be replaced.

Situation 11Squeaking noise from frame

Loose frame screws may cause a squeaking noise between the metal and wood frames. With a #25 torx bit driver,seat the screws firmly. The T-bracket pivots on the side brackets through the recline motion. This joint may becomedry and cause a squeaking noise. Lubricate the side brackets if they are dry.

If the lift chair is leaning, check the following procedure to identify the problem.

1. Make sure that all four (six on the TMR540) leg levelers are present. All leg levelers should be on the sameplane. If not, adjust them accordingly.

If the legs are bent or broken, the chair will lean. Replace the leveling leg.

2. Examine the lift frame for squareness, excessive wear, bends, or breaks.

If the frame is bent, broken, or not square, replace the entire frame or the individual part that has become defective.

3. Excessive wear may cause the bushings to hollow out on the clevis pins.

If wear is present, replace the entire frame or the individual part.

Situation 12Chair is leaning




Situation 13Frame is catching and hesitating

If the lift chair frame is catching and hesitating, check the following procedure to identify the problem.

1. The T-bracket may be caught up on another component. Check the T-bar for bends.

If the T-bracket is bent, it possibly can get caught on the frame. Replace the T-bracket.

2. Examine the frame for scrapes caused by the T-bracket.

If there are scrapes or worn away paint, the side brackets must be adjusted to free a clear path for the T-bracket. Bendsin the lift frame may cause various components to catch and hesitate on each other. Replace the entire frame or theindividual component that is bent.

Situation 14Chair is twisting

If the lift chair is twisting, check the following procedure to identify the problem.

Loose screws will allow the chair to twist. Securely fasten the screws back into the wood with a #25 torx bit driver.Examine the frame and look for broken screws.

1. Remove the remaining screws.2. Disconnect the side brackets.3. Move the frame towards the rear of the chair approximately one inch (2.5 cm).4. Drill pilot holes and reattach the side bracket and frame screws.

Make sure that all of the components are square and perpendicular to each other.

The frame should be relocated if the screws are broken.

If relocating the frame is required, perform the following procedure.




Situation 15GL545, GL555, TMR 540 motors work but the chair

will not move

2. Examine the welds of the frame for cracks.3. The clevis pins holding the frame together may have slipped out of the bushings.

If the GL545, GL555, and TMR 540 motors work but the lift chair does not move, check the following procedureto identify the problem.

1. The heavy weight pivot bar may be broken. Both motors are attached to the pivot bar, located on the rearportion of the lift frame.

If the pivot bar is cracked or broken, it must be replaced.

2. Check to see if the ribbon switch is still attached to the pivot bar.

If the ribbon switch is loose or damaged, either reattach it or replace it.

3. Examine the frame for scrapes caused by the T-bracket.

If there are scrapes or worn away paint, the side brackets must be adjusted to free a clear path for the T-bracket. Bendsin the lift frame may cause various components to catch and hesitate on each other. Replace the entire frame or theindividual component that is bent.

Situation 16 Chair is dropped

1. The lift and recline brackets may have broken. Turn the chair on its side or back to determine where the motorconnects to the top portion of the chair.

If the lift chair appears to be dropped, check the following procedure to identify the problem.

If the bracket that connects the motor to the lift chair is broken, it must be replaced.

4. Check the physical appearance of the motor. The stroke tube or the rear clevis mount may have failed, causingthe chair to drop.

If the clevis pins look out of place, replace them and also make sure the cotter pins are in place.




Pride Lift Chairs are constructed of durable engineered furniture laminate/hardwood plywood. The wood frame iscomprised of the seat, back, and arm assemblies. If a cracking noise is heard from the lift chair, check the follow-ing procedure to identify the problem.

2. The problem may lie in the scissors or the lift frame if cracks or breaks are not noticed.

1. The wood may be split or broken. Turn the chair onto its side or back and examine the chair where the metaland wood frames join.

If any cracks or breaks are apparent, the frame must be replaced.

1. Test the electronics on the motor. Troubleshoot the two leads extending from the motor.2. With a multimeter set to 200VAC scale, place the RED lead on the BLACK/RED wire and the BLACK lead

on the BLACK wire.3. Turn the heat and/or massage on with the hand control.4. The meter should read 120VAC.

If the standard heat and massage option on the lift chair does not work, check the following procedure to identifythe problem (old style motor, no external transformer).


If the meter reads 120VAC, replace the individual heat or massage units. If the meter reads anything other than 120VAC,replace either the motor or the hand control.

Situation 18Standard heat and massage stops working

Use of the chair should be discontinued until proper repairs have been done..


Situation 17Cracking noise



To test the continuity of the hand control:

The meter reads_________ohms.

4. Move the BLACK lead to pin 5 and press the massage switch to the on position. See figure 58. A reading ofzero (0) ohms should be read, indicating the massage option on the hand control is operating properly.

2. Using a multimeter set to 200 ohms, place the RED lead on pin 1, then place the BLACKlead on pin 4. See figure 58.

3. Press the heat switch to the on position. A reading of zero (0) ohms means the heat optionon the hand control is operating properly.

1. Unplug the chair from the power source and disconnect the hand control from the control box.


If the tests fail, replace the hand control.

Check the voltage to the control box for the heat/massage units (heat/massage externaltransformer):

If both voltages are not within tolerance, replace the external transformer.

2. With a multimeter set to 200VDC, place the BLACK lead on pin 1 and the REDlead on pin 3 of the transformer. See figure 59. The meter should read 38VDC +/-10%.

3. Move the read lead to pin 2 of the transformer. See figure 59. The meter shouldread 12VDC +/-10%.

1. Disconnect the control box from the transformer.

Figure 58. HandControl Plug Pins

1. -

3. +

2.



45 1

23




Figure 61. Lift Con-nector Pins


4-PIN (QUICKRELEASE HARNESS)

12

43

2-PIN (MASSAGE)

12

2-PIN(QUICK

RELEASE HARNESS)

2 1

3-PIN (HEAT)

123

To test the heat/massage hand control (for units with external transformers), use the following procedures toidentify the problem.

Check voltage to the heat/massage units.

1. With power to the control box, check the connections to the heat/massage units for power. Turn off the heat/massage options on the hand control before testing.

12

43

+

-

4-PIN (MASSAGE/CONTROL BOX)

2-PIN (HEAT/CONTROL BOX)

+ 2 1 -


3. On the hand control, activate the heat option. The voltage should read 36VDC +/-10%.


4. Find the 4-pin connection in the control box for the massage unit and disconnect. See figure60. In the control box, place the RED lead in pin 1 and the BLACK lead in pin 4. The voltageshould read 0VDC with the massage switch on the hand control in the off position.

The meter reads_________volts.5. On the hand control, activate the massage option. The voltage should read 12VDC +/-10%.The meter reads_________volts.

2. Set the multimeter to 200VDC. Find the 2-pin connection in the control box for theheating pad and disconnect. See figure 60. In the control box, place the BLACK lead onpin 1 and the RED lead on pin 2. The meter should read 0VDC with the heat switch onthe hand control in the off position.

If the heat/massage units have power from the control box, then examine the units for dam-age. Check the wiring to ensure it is not crimped or severed. If the units and wiring appearintact, use the following procedure to check the resistance of the heat/massage units.

4. If an open or short is read, disconnect the harness from the heat pad. Measure theresistance across the two outside pins of the 3-pin (heat) connector. See figure 61.The meter should read approximately 55 ohms.

5. Disconnect the massage unit from the control box.6. Set the multimeter to the 200 ohms scale.7. Measure the resistance across pins 2 and 3 in the connector (massage). See figure

61. The meter should read approximately 20 ohms.



8. If an open or short is read, disconnect the harness from the massage unit. Measure theresistance across the 2-pin connector (massage). See figure 61. The meter should readapproximately 20 ohms.


1. Disconnect the heat pad from the control box.2. Set the multimeter to the 200 ohms scale.3. Measure the resistance across the 2-pin (heat) connector. See figure 61. The meter

should read approximately 55 ohms.

If the multimeter does not read the correct resistance, replace the appropriate heat/massage unit.

If the multimeter does not read the correct voltage, replace the control box.




1. -

3. +

2.


1. Test the control module (white box/brain).2. Turn on the heat and massage switches on the hand control.3. With a multimeter set to 200VAC, test the three (3) connectors that lead to the heat and massage units.

Situation 19Deluxe heat and massage stops working

If the deluxe heat and massage option on the lift chair does not work, check the following procedure to identify theproblem (old style motor, no external transformer).

The meter reads_________volts

4. The meter should read 120VAC on the RED connector that connects to the heat pad.


5. The meter should read 40VAC +/-10% on one of the massage unit connections and 50VAC+/-10% on theother.


6. The voltage should be 120VAC.7. If the reading is not 120VAC, reconnect the module and troubleshoot the hand control as per Situation 6.

If the meter reads the appropriate voltages, replace either the heat pad or the massage unit accordingly. If the meterdoes not read those voltages, test the voltage at the input of the control module.

Check the voltage to the control box for the heat/massage units (heat/massage externaltransformer):

If both voltages are not within tolerance, replace the external transformer.

2. With a multimeter set to 200VDC, place the BLACK lead on pin 1 and the REDlead on pin 3 of the transformer. See figure 62. The meter should read 38VDC +/-10%.

3. Move the read lead to pin 2 of the transformer. See figure 62. The meter shouldread 12VDC +/-10%.

1. Disconnect the control box from the transformer.




Check voltage to the heat/massage units.

5. Find the 2-pin massage connection from the control box and disconnect. See figure 63. Place the RED lead inpin 2 and the BLACK lead in pin 1. The meter should read 0VDC with the massage switch on the hand controlin the off position.


6. On the hand control, turn on the massage option. The meter should read a varying voltage up to 20VDC,depending on the setting of the massage intensity (second switch) and the massage type (third switch).

7. On the hand control, vary the settings of the second and third massage switches. The meter should read avarying voltage up to 20VDC, depending on each setting.

1. With power to the control box (see Situation 1), disconnect the 3-pin heating pad con-nection from the control box.

2. Turn off the heat/massage options on the hand control before testing.3. Set the multimeter to the 200VDC scale. See figure 63. Place the RED lead in pin 1 and

the BLACK lead in pin 3. The meter should read 0VDC with heat switch on the handcontrol in the off position.


4. On the hand control, turn on the heat pad. The voltage should read 36VDC +/-10%.The meter reads_________volts

If the meter does not read the correct voltage, replace the control box.

If the heat/massage units have power from the control box, then examine the units for dam-age. Check the wiring to ensure it is not crimped or severed. If the units and wiring appearintact, use the following procedure to check the resistance of the heat/massage units.

1. Disconnect the heat pad from the control box.2. Set the multimeter to the 200 ohms scale. Measure resistance across the two outside

pins of the 3-pin heat pad connector. See figure 64. The meter should read approxi-mately 55 ohms.

If the meter does not read the correct resistance, replace the appropriate heat/massage unit.


3. Disconnect the massage unit from the control box.4. Set the multimeter to the 200 ohms scale. Measure resistance across the both pins of the 2-pin massage connec-

tor. See figure 64. The meter should read approximately 20 ohms.



- +

2-PIN(MASSAGE/

CONTROL BOX)

-+

12

3-PIN(HEAT/CONTROL BOX)

123


3-PIN (HEAT)

123

2-PIN (MASSAGE)

12




1. Stains need immediate attention. The cleaning code for the fabric is W. Pride recommends the use of a lightwater-based shampoo and a soft bristled brush.

2. Gently scrub the area from the outside toward the center.3. If the stain persists, professional cleaning may be needed.

Situation 20Stains on fabric

If the fabric on the lift chair is stained, use the following procedure to correct the problem.

Do not use a chemical cleaner.

Situation 22Broken down foam

1. The chaise pad foam may break down after time. The chaise pads on certain lift chair models have a zipper onthe rear side for easy removal and replacement of the foam.

2. The Luxury Line chairs with waterfall pillows also have zippers on the back side of the pillow. If the pillowsbreak down, more fill can easily be added through the zippers.

If the foam on the lift chair is broken down, use the following procedure to correct the problem.

Pride does not warrant the fabric.

1. The best method for the removal of wrinkles is steam. Steam will tighten the fabric and remove the wrinkles.2. If steam is not available, use a hot, lightly dampened towel. Use even strokes in the same direction over the

area. Several applications may be needed.

Situation 21Wrinkles in fabric

If the fabric on the lift chair is wrinkled, use the following procedure to correct the problem.


TECHNICAL TROUBLESHOOTING GUIDENOTESNOTESNOTESNOTESNOTES

INFMANU2721/REV C/FEBRUARY 2006

Contact Information

Main Toll Free Number 800.800.8586Local Phone Number 570.655.5574

Internet Address for Product Information www.pridemobility.comInternet Address for Service Information www.prideservice.com“Live Chat” available 8:30 — 5:00 EST

Toll Free Service Hotline 877.800.1248 (Dealers Only)

Press 7 for Technical Service, thenPress 1 for Help Desk orPress 2 for Quantum Rehab Tech orPress 3 for Power Chair Tech orPress 4 for Scooter Tech orPress 5 for Lift Chair Tech

Parts Order Fax 866.800.1011

Technical Assistance is available Monday — Friday 8:00 a.m. till 7:00 p.m. EST**Skeleton Staff from 5:30 p.m. — 7:00 p.m.

Pride Mobility Products Corporation182 Susquehanna Ave.

Exeter, PA 18643

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