ultracomfort Leisure UC211 User manual

SERVICE GUIDE
http://waterheatertimer.org/pdf

REVA_040412
1
Table of Contents
About the Lift Chair Service Guide…………………………………………………………….2
Lift Chair Components………………………………………………………………………..2-4
General Trouble Shooting...................................................................................................5
Tools Required....................................................................................................................5
Models Quick Reference………………………………………………………………………..6
Replacement Instructions...………………………………………………………………7-14
Smart Tek Hand Control………………………………………………………………………..7
Hand Control Extension Wire............................................................................................7
Back Assembly…………………………………………………………………………………..8
Control Box……………………………………………………………………………………….8
Lift Motor………………………………………………………………………………………….8
Lift Frame…………………………………………………………………………………………9
Arm Assembly……………………………………………………………………………......9-10
Scissor Mechanism………………………………………………………………………...11-12
Recline Bar..…………………………………………………………………………………....12
Seat Assembly……………………………………………………………………………...13-14
Recline Straps………………………………………………………………………………….14
Scissor Mechanism Parts……………………………………………………………………..15
Electrical Systems………………………………………………………………………...16-20
Single Motor……………………………………………………………………………………..16
Dual Motor……………………………………………………………………………………….17
Heat and Massage……………………………………………………………………………...18
Stellar Comfort………………………………………………………………………………......19
UC480 Heat and Massage………………………………………………………………….....20
Trouble Shooting with SMART TEK…………………………………………………………..21
LIFT FRAMES………………………………………………………………………………23-37
LM5000C…………………………………………………………………………………….23-25
LM5100………………………………………………………………………………………26-28
LM5120………………………………………………………………………………………29-31
LM6111………………………………………………………………………………………32-34
LM5200M-RO……………………………………………………………………………….35-37
Stellar Comfort Recline
Mechanism……………………………………………………….38
Power Connections……………………………………………………………………….........39
Back Installation………………………………………………………………………………...39
Hand Controls……………………………………………………………………………….40-43
Grease Points…………………………………………………………………………………...44
Lift Chair Cut Away……………………………………………………………………………..45
Lift Chair Boxing Instructions………………………………………………………………46-47
UC540M-26 Boxing Instructions...................................................................................48-49

REVA_040412
2
About the Lift Chair Service Guide
This service guide provides you with the information necessary to repair the UltraComfort 3-position,
2-position, and Stellar recline lift chairs. The troubleshooting scenarios in this manual consist of
procedures that enable you to systematically trace and correct faults in the system, replacement
procedures, and exploded views of available parts. Most replacement instructions apply to all the lift
chairs in this service manual, but some of them are specific to individual chairs.
Before troubleshooting, check the following:
• Make sure that the lift chair is plugged into a working wall outlet.
• Check the wall outlet circuit breaker.
• Visually check terminals for corrosion.
• Check wires for missing insulation.
• Check connectors for unseated pins.
• Ensure LED lights are on. (Refer to “Trouble Shooting with SMART TEK” on page 19).
Information required prior to making a service call:
• Serial Number
• Date of Purchase
• Description of the problem with the lift chair
Lift Chair Components
Lift chairs are powered by 24V DC transformers that plug into standard wall outlets and operate on
standard 120V AC electricity. The lift chair control system is made up of the following components:
• Motor(s)
• Hand Control
• Extension Wire
• Transformer
• Battery Backup Wire*
• Heat Unit*
• Massage Unit*
• Control Unit*
• Junction Box*
*Only on selected models
Component: Motor
Location: Between the lift frame and the seat.
Function: Provides lift and recline.
Connections: Each motor is physically connected to the chair through the lift frame and the recline
straps. Each motor is electrically connected to either a control unit or directly to the hand control.
Failure Signs: Chair will not lift and/or recline. Motor may become noisy just before failure.
Tests: See “Trouble Shooting with SMART TEK” on page 19.
Expected Readings: See “Trouble Shooting with SMART TEK” on page 19.
Serviceable: Must be replaced.
Component: Hand Control (Lift/Recline or Recline Only)
Location: On the arm of the chair.
Function: Provides user interface for lift/recline or recline only.
Connections: Connected to either the control unit or the motor.
Failure Signs: Chair will not lift and/or recline.
Tests: See “Trouble Shooting with SMART TEK” on page 19.
Expected Readings: See “Trouble Shooting with SMART TEK” on page 19.
Serviceable: Must be replaced.

REVA_040412
3
Component: Extension Wire
Location: Between the lift frame and the chair frame.
Function: Provides connection from the hand control to the motor or control box.
Connections: From the quick disconnect in the pocket to the motor or control box.
Failure Signs: Chair will not lift/recline.
Tests: Test continuity.
Expected Readings: Open Circuit
Serviceable: Must be replaced.
Component: Transformer
Location: Next to chair.
Function: Converts AC to DC. Also provides power during a power failure.
Note: Power during a power failure only applies to the lift/recline or recline only functions.
Connections: Wall outlet and either control box or motor.
Failure Signs: Chair will not operate.
Tests: Test for voltage at connection to chair.
Expected Readings: Approximately 27VDC.
Serviceable: Must be replaced.
Component: Control Box (500-lb. chair only)
Location: On the lift frame.
Function: Provides connectivity for motors, hand control, and
transformer.
Connections: Connected to the motor(s), hand control, and
transformer.
Failure Signs: Chair will not lift and/or recline.
Clicking noise. Motors out of sync.
Tests: AC Voltage
Expected Readings: 27 - 32 VAC. See figure 1.
Serviceable: Must be replaced.
Component: Heat Pad
Location: On the chair seat.
Function: Provides heat.
Connections: Connected to the control box.
Failure Signs: No heat.
Tests: Resistance.
Expected Readings: (Far Infrared Heat only, 1 - 6 ohms across the two connector pins).
Serviceable: Must be replaced.
Component: Massage Unit
Location: On the seatback or the seat.
Function: Vibrates to provide massage.
Connections: Connected to the junction box.
Failure Signs: Massage will not work when selected.
Tests: Check for DC voltage
Expected Readings: Approximately 13.8 DC Volts
Serviceable: Must be replaced.
Figure 1. Control Box

REVA_040412
4
Component: Hand Control (Heat/Massage or Infrared Heat Only)
Location: On the arm of the chair.
Function: Provides user interface for heat/massage or Infrared heat only.
Note: Model UC480 uses the “All in one” hand control, which controls heat, massage, and lift/recline.
Connections: Connected to the control box.
Failure Signs: Heat/Massage or Infrared Heat Only will not work.
Note: Model UC480, Chair will not lift and/or recline or Heat/Massage will not work.
Tests: See “Hand Controls” on pages 38-39. For a more complete guide, refer to manufacturer’s
owner’s manual.
Expected Readings: See “Hand Controls” on pages 38-39. For a more complete guide, refer to
manufacturer’s owner’s manual.
Serviceable: Must be replaced.
Battery Back Up System
1. Batteries should be replaced after one use.
2. Batteries should be changed yearly.
For a complete explanation of the battery back up system, refer to the UltraComfort owner’s manual.

REVA_040412
5
General Trouble Shooting
Problem: 1
Chair is in the lift position and will not descend, or chair is in the recline position and will not lift.
Solution:
If the chair is stuck in the lift position, press the down button; if the chair is stuck in the recline
position, press the up button. While pressing the appropriate button, listen to hear if the motor is
running.
Ensure LED lights are on. (Refer to “Trouble Shooting with SMART TEK” on page 19).
Problem 2
If you don’t hear the motor running, follow these steps.
A) Check to see if the chair is securely plugged in.
B) See if the outlet is activated by a wall switch.
C) Try plugging the chair into a different outlet. (Sometimes the socket is worn and will not
handle the amps needed for operation.)
D) Check wiring on both power cord for motor and switch cord for breakage or fraying.
E) Plug the new hand control into motor or into extension and try for chair response.
F) If still no response, see “Trouble Shooting with SMART TEK” on page 19.
Problem 3
If you hear the motor running, but the chair won’t move or partially moves, check for the following:
A) Inspect lift frame for possible breakage.
B) Inspect push tube or gear casing for breakage.
C) Gears may be stripped in gear casing in motor assembly.
D) Push tube may be stripped or the fork head may be broken.
Tools Required:
The following tools are needed to service Ultra Comfort lift chairs.
• # 8, 9 or 10 flat head screw driver
• P2 & P3 Phillips head screw driver
• T30 torx bit
• Wired or wireless drill Note: Driver bits can be used to speed up the repair process.
• Chair stand
• Spare hair pins
• Zip ties
• 7/16 box head wrench
• 3/8 box head wrench
• 1/2 box head wrench
• Needle nose pliers
• Volt meter
• Clippers or scissors
• Retracto knife
• Spare rags
• Large vice grip
• White lithium grease and Zep 2000
If servicing a lift chair with the StellarComfort mechanism, you will also need:
• 7/16 & 3/8 ratchet wrench
• 5/32 Allen wrench

REVA_040412
6
Models Quick Reference
* Hand Control models currently being used.
Model Series Size Lift
Frame Motor Transformer Hand Control Recline Mechanism
UC211 Leisure Medium LM5000C Single Standard US UC 2 Button 2 way
UC320 Leisure Medium LM5100 Single Standard US UC 2 Button 3 way
UC330 Leisure Large LM5120 Single Standard US UC 2 Button 3 way
UC540-SAA Montage Small LM5100 Single Standard US UC 2 Button 3 way
UC540-M Montage Medium LM5100 Single Standard US UC 2 Button 3 way
UC540-L Montage Large LM5120 Single Standard US UC 2 Button 3 way
UC540M-26 Montage Wide LM6111 Dual Standard US UC 2 Button 3 way HD
UC480 Tranquility Medium LM5100 Single Standard US All in one 3 way
UC660 Tranquility Medium LM5100 Single Standard US UC 2 Button 3 way
UC770 Tranquility Medium LM5120 Single Standard US UC 2 Button 3 way
UC550-S Stellar Comfort Small LM5100 Stellar Standard US *Auto Drive
6 Button Stellar
UC550-M Stellar Comfort Medium LM5100 Stellar Standard US *Auto Drive
6 Button Stellar
UC550-L Stellar Comfort Large LM5120 Stellar Standard US *Auto Drive
6 Button Stellar
UC552 Stellar Comfort Medium LM5100 Stellar Standard US *Auto Drive Stellar
UC556 Stellar Comfort Medium LM5120 Stellar Standard US *Auto Drive Stellar
UC551-S Power Recline Small LM5200M-RO Stellar Standard US *Auto Drive
6 Button Stellar
UC551-M Power Recline Medium LM5200M-RO Stellar Standard US *Auto Drive
6 Button Stellar
UC551-L Power Recline Large LM5200M-RO Stellar Standard US *Auto Drive
6 Button Stellar
UC553 Power Recline Medium LM5200M-RO Stellar Standard US *Auto Drive
6 Button Stellar
UC557 Power Recline Medium LM5200M-RO Stellar Standard US Auto Drive Stellar

REVA_040412
7
Replacement Instructions
Smart Tek Hand Control Replacement
Tools Needed: None
1. Unplug the transformer from the wall outlet.
2. Unplug the motor power cable.
3. Reach down into the pocket until you feel the disconnect latch on the extension cable.
4. Pull back on the disconnect latch.
5. Put one hand on the back of the extension wire plug base and one on the hand control plug base
and pull the two pieces apart.
6. Plug in the new Smart Tek hand control to the extension cable.
7. Push forward on the disconnect latch. Make sure it engages fully with the hand control plug base.
8. Reconnect the motor power cable.
9. Plug the transformer into the wall outlet and test the hand control.
Hand Control Extension Wire Replacement
Tools Needed: Phillips head screwdriver, wire cutter, staple remover, stapler, zip ties, and a chair
stand.
1. Unplug the transformer from the wall outlet.
2. Unplug the transformer from the battery backup cable.
3. Reach down into the chair’s side pocket until you feel the disconnect latch on the hand control
extension.
4. Pull back on the disconnecting latch.
5. Put one hand on the back of the extension wire plug base and one on the hand control plug base
and pull the two pieces apart.
6. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.
7. Use a Phillips screwdriver to remove the wire clamp used to secure the extension cable to the
bottom of the armrests. Make sure you save the clamp and screw.
8. Remove a few staples on the arm assembly to allow the extension wire to be pulled out through
the fabric pocket.
9. Pull the extension cable through the fabric pocket.
10. Locate the zip ties that hold the extension wire to the lift frame. Note their location.
11. Cut these ties.
12. Unplug the extension cable from the control box.
13. Plug the new extension cable into the control box.
14. Secure it to the lift frame with zip ties. Use the same locations as the old extension cable.
15. Insert the extension cable into the fabric pocket.
16. Reinstall the staples that were removed in step 8.
17. Reinstall the wire clamp.
18. Turn the chair back over onto its legs.
19. Plug in the Smart Tek hand control to the extension cable.
20. Push forward on the disconnecting latch. Make sure it engages fully with the hand control plug
base.
21. Clip the Smart Tek hand control to the black plastic hook on the side of the chair arm.
22. Plug the battery backup back into the transformer.
23. Plug the transformer back into the wall outlet and test.

REVA_040412
8
Back Assembly Replacement (500-lb. and 3-position)
Tools needed: 7/16 inch socket wrench
1. Press the Up Button on the hand control until the footrest is about parallel to the floor.
2. Unplug the transformer from the wall outlet.
3. Using the 7/16 inch socket wrench, remove the two (2) flange lock nuts located on both sides of
the back.
4. Pull the back flap away from the Velcro.
5. Work the back assembly out one side at a time pulling the threaded studs out of the scissor
mechanisms.
6. Install new back.
Control Box Replacement (500-lb. only)
Tools needed: wire cutters, replacement zip ties, and a chair stand.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the transformer.
3. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.
4. Unplug the motor(s), hand control extension, and battery backup from the control box.
5. Cut the wire ties that fasten the control box and the motor(s) to the lift frame and remove it.
6. Use wire ties to fasten a new control box onto the lift frame.
7. Plug the motor(s), hand control extension, and battery backup into the new control box.
8. Gently turn the chair back over.
9. Plug the battery backup cable into the transformer.
10. Plug the transformer into the wall outlet and test.
Lift Motor Replacement
Tools needed: needle nose pliers, zip ties, and a chair stand.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the transformer.
3. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.
4. Unplug the motor(s) from the control unit (540M26) or from the hand control extension and the
transformer.
5. Remove the hitch pin and the clevis pin that fastens the bottom of the motor(s) to the lift frame.
6. Remove the hitch pin, the clevis pin, washers, and spacers that fasten the top of the motor(s) to
the recline straps.
7. Use the hitch pin and clevis pin to fasten the bottom of the new motor to the lift frame.
8. Use the hitch pin, clevis pin, washers, and spacers to fasten the top of the lift motor to the recline
straps.
9. Connect the new motor(s) to the control unit.
10. Turn the chair over onto the lift frame.
11. Plug the battery backup cable into the transformer.
12. Plug the transformer into the wall outlet and test.

REVA_040412
9
Lift Frame Replacement
Tools needed: Needle nose pliers, T30 Torx screw bit, wire cutters, replacement zip ties, and a
chair stand.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the transformer.
3. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.
4. Unplug the motor(s), hand control extension, and battery backup from the control box.
5. Cut the wire ties that fasten the control box to the lift frame and remove it (500-lb. only.)
6. Remove the eight (8) T30 lag screws that hold the lift frame to the arm assembly.
7. Cut the wire ties that hold the hand control extension wire to the frame and place the wire to the
side.
8. Remove the hitch pin(s), the clevis pin(s), and the washers that fasten the recline strap(s) to the
recline bar.
9. Lift the lift frame out of the chair shell.
Note: When installing the new lift frame the footboard must be completely closed when you fasten
the lift frame to the armrest assembly or the footboard will not close properly.
10. Cut the wire ties that fasten the motor cables to the lift frame.
11. Remove the hitch pin(s) and the clevis pin(s) that fasten the bottom of the motor(s) to the lift
frame.
12. Remove the hitch pin(s), the clevis pin(s), spacers, and washers that fasten the recline straps(s)
to the lift frame.
13. Use the hitch pin(s), the clevis pin(s), spacers, and washers to fasten the recline strap(s) to the
new lift frame.
14. Use the hitch pin(s) and the clevis pin(s) to fasten the bottom of the motor(s) to the new lift frame.
15. Place the new lift frame onto the chair shell.
16. Use the hitch pin(s), the clevis pin(s), and the washers to fasten the recline strap(s) to the recline
bar.
17. Use the eight (8) T30 lag screws to fasten the lift frame to the arm assembly.
18. Use two wire ties to fasten the hand control extension to the lift frame.
19. Use wire ties to fasten the control box to the lift frame.
20. Plug the motor(s), hand control extension, and battery backup into the control box.
21. Gently push the chair back over.
22. Plug the battery backup cable into the transformer.
23. Plug the transformer into a wall outlet and test.
Arm Assembly Replacement
Tools needed: Needle nose pliers, P2 Phillips screwdriver, T30 screw bit, wire cutters, zip ties, 3/8
inch socket, a stool or stand for placing the chair upside down.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the control box.
3. Reach down into the chair’s side pocket until you feel the disconnect latch on the hand control
extension.
4. Pull back on the disconnecting latch.
5. Put one hand on the back of the extension wire plug base and one on the hand control plug base
and pull the two pieces apart.
6. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.

REVA_040412
10
7. Use a Phillips screwdriver to remove the wire clamp used to secure the extension cable to the
bottom of the armrests. Make sure you save the clamp and screw.
8. Remove a few staples on the arm assembly to allow the extension wire to be pulled out through
the fabric pocket.
9. Pull the extension cable through the fabric pocket.
10. Remove the eight (8) T30 lag screws that hold the lift frame to the arm assembly.
11. Remove the hitch pin(s), the clevis pin(s), and the washers that fasten the recline strap(s) to the
recline bar.
12. Lift the lift frame out of the chair shell and place it off to the side.
13. Use the 3/8 inch socket to remove the four (4) bolts that fasten each scissor mechanism to the
arm assembly.
While this next step can be done alone, it does require extra attention. You
must remove the arm assembly without twisting the frame. Excessive twisting will cause the
board holding the arms together to snap.
14. Stand behind the chair and pull the arms away from the chair being careful not to get the material
snagged in the scissor mechanisms.
15. Place the arm assembly to the side.
16. Place the new arm assembly in place so that the bolt holes in the scissor mechanisms line up
with the bolt holes in the armrest.
17. Install the four (4) bolts that fasten each scissor mechanisms to the new arm assembly.
18. Make sure the footboard is completely closed.
Note: When installing the lift frame the footboard must be completely closed when you fasten the lift
frame to the armrest assembly or the footboard will not close properly.
19. Place the lift frame onto the chair shell.
20. Use the hitch pin(s), the clevis pin(s), and the washers to fasten the recline strap(s) to the recline
bar.
21. Use the eight (8) T30 lag screws to fasten the lift frame to the arm assembly.
22. Reinstall the staples that were removed in step 8.
23. Reinstall the wire clamp.
24. Gently turn the chair back over onto its legs.
25. Plug in the Smart Tek hand control to the extension cable.
26. Push forward on the disconnecting latch. Make sure it engages fully with the hand control plug
base.
27. Clip the Smart Tek hand control to the black plastic hook on the side of the chair arm.
28. Plug the battery backup back into the control box.
29. Plug the transformer back into the wall outlet and test.
Scissor Mechanism Replacement
Tools needed: Needle nose pliers, P2 Phillips screwdriver, T30 screw bit, wire cutters, zip ties, 3/8
inch socket, a stool or stand for placing the chair upside down.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the transformer.
3. Reach down into the chair’s side pocket until you feel the disconnect latch on the hand control
extension.
4. Pull back on the disconnecting latch.

REVA_040412
11
5. Put one hand on the back of the extension wire plug base and one on the hand control plug base
and pull the two pieces apart.
6. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.
7. Unplug the transformer and the hand control extension from the motor or control box.
8. Remove the eight (8) T30 lag screws that hold the lift frame to the arm assembly.
9. Remove the hitch pin(s), the clevis pin(s), and the washers that fasten the recline strap(s) to the
recline bar.
10. Remove the hand control extension wire clamp.
11. Lift the lift frame out of the chair shell and place it off to the side.
12. Use the 3/8 inch socket to remove the four (4) bolts that fasten each scissor mechanism to the
arm assembly.
While this next step can be done alone, it does require extra attention. You
must remove the arm assembly without twisting the frame. Excessive twisting will cause the
board holding the arms together to snap.
13. Stand behind the chair and pull the arms away from the chair being careful not to get the material
snagged in the scissor mechanisms.
14. Place the arm assembly to the side.
15. Use the Phillips screwdriver to remove the screws that fasten the scissor mechanism to the
footboard.
16. Use the 3/8 inch socket to remove the bolts that fasten the scissor mechanism to the seat and to
the footboard.
17. Use the 3/8 inch socket to install the bolts that fasten the new scissor mechanism to the seat and
the footboard.
18. Use the Phillips screwdriver to install the screws that fasten the new scissor mechanism to the
footboard.
19. Place the arm assembly in place so that the bolt holes in the scissor mechanisms line up with the
bolt holes in the armrest.
20. Install the four (4) bolts that fasten each scissor mechanisms to the arm assembly.
21. Make sure the footboard is completely closed.
Note: When installing the lift frame the footboard must be completely closed when you fasten the lift
frame to the armrest assembly or the footboard will not close properly.
22. Place the lift frame onto the chair shell.
23. Use the hitch pin(s), the clevis pin(s), and the washers to fasten the recline strap(s) to the recline
bar.
24. Use the eight (8) T30 lag screws to fasten the lift frame to the arm assembly.
25. Reinstall the hand control extension wire clamp.
26. Plug the transformer and hand control extension into the motor or control box.
27. Plug the battery backup back into the transformer.
28. Plug the transformer back into the wall outlet and test.
29. Reinstall the seatback if removed.

REVA_040412
12
Recline Bar Replacement
Tools needed: Needle nose pliers, P2 Phillips screwdriver, T30 screw bit, wire cutters, zip ties, 3/8
inch socket, a stool or stand for placing the chair upside down.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the transformer.
3. Reach down into the chair’s side pocket until you feel the disconnect latch on the hand control
extension.
4. Pull back on the disconnecting latch.
5. Put one hand on the back of the extension wire plug base and one on the hand control plug base
and pull the two pieces apart.
6. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.
7. Remove the eight (8) T30 lag screws that hold the lift frame to the arm assembly.
8. Remove the hitch pin(s), the clevis pin(s), and the washers that fasten the recline strap(s) to the
recline bar.
9. Remove the hand control extension wire clamp.
10. Lift the lift frame out of the chair shell and place it off to the side.
11. Use the 3/8 inch socket to remove the four (4) bolts that fasten each scissor mechanism to the
arm assembly.
While this next step can be done alone, it does require extra attention. You
must remove the arm assembly without twisting the frame. Excessive twisting will cause the
board holding the arms together to snap.
12. Stand behind the chair and pull the arms away from the chair being careful not to get the material
snagged in the scissor mechanisms.
13. Place the arm assembly to the side.
14. Use the 1/2 inch socket to remove the bolts that fasten the recline bar to the seat.
15. Use the 1/2 inch socket to install the bolts that fasten the new recline bar to the seat.
16. Place the arm assembly in place so that the bolt holes in the scissor mechanisms line up with the
bolt holes in the armrest.
17. Install the four (4) bolts that fasten each scissor mechanisms to the arm assembly.
18. Make sure the footboard is completely closed.
Note: When installing the lift frame the footboard must be completely closed when you fasten the lift
frame to the armrest assembly or the footboard will not close properly.
19. Place the lift frame onto the chair shell.
20. Use the hitch pin(s), the clevis pin(s), and the washers to fasten the recline strap(s) to the recline
bar.
21. Use the eight (8) T30 lag screws to fasten the lift frame to the arm assembly.
22. Reinstall the hand control extension wire clamp.
23. Plug the battery backup back into the transformer.
24. Plug the transformer back into the wall outlet and test.

REVA_040412
13
Seat Assembly Replacement
Tools needed: Needle nose pliers, P2 Phillips screwdriver, T30 screw bit, wire cutters, zip ties, 3/8
inch socket, a stool or stand for placing the chair upside down.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the transformer.
3. Reach down into the chair’s side pocket until you feel the disconnect latch on the hand control
extension.
4. Pull back on the disconnecting latch.
5. Put one hand on the back of the extension wire plug base and one on the hand control plug base
and pull the two pieces apart.
6. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control. You can also remove the seat back.
7. Remove the eight (8) T30 lag screws that hold the lift frame to the arm assembly.
8. Remove the hitch pin(s), the clevis pin(s), and the washers that fasten the recline strap(s) to the
recline bar.
9. Remove the hand control extension wire clamp.
10. Lift the lift frame out of the chair shell and place it off to the side.
11. Use the 3/8 inch socket to remove the four (4) bolts that fasten each scissor mechanism to the
arm assembly.
While this next step can be done alone, it does require extra attention. You
must remove the arm assembly without twisting the frame. Excessive twisting will cause the
board holding the arms together to snap.
12. Stand behind the chair and pull the arms away from the chair being careful not to get the material
snagged in the scissor mechanisms.
13. Place the arm assembly to the side.
14. Use the Phillips screwdriver to remove the screws that fasten the scissor mechanism to the
footboard.
15. Use the 3/8 inch socket to remove the bolts that fasten the scissor mechanism to the seat and to
the footboard.
16. Use the 1/2 inch socket to remove the bolts that fasten the recline bar to the seat.
17. Use the 1/2 inch socket to install the bolts that fasten the recline bar to the new seat.
18. Use the 3/8 inch socket to install the bolts that fasten the scissor mechanism to the new seat and
the footboard.
19. Use the Phillips screwdriver to install the screws that fasten the new scissor mechanism to the
footboard.
20. Place the arm assembly in place so that the bolt holes in the scissor mechanisms line up with the
bolt holes in the armrest.
21. Install the four (4) bolts that fasten each scissor mechanisms to the arm assembly.
22. Make sure the footboard is completely closed.
Note: When installing the lift frame the footboard must be completely closed when you fasten the lift
frame to the armrest assembly or the footboard will not close properly.
23. Place the lift frame onto the chair shell.
24. Use the hitch pin(s), the clevis pin(s), and the washers to fasten the recline strap(s) to the lift
frame.
25. Use the eight (8) T30 lag screws to fasten the lift frame to the arm assembly.
26. Reinstall the hand control wire clamp.

REVA_040412
14
27. Plug the motor(s), hand control extension, and battery backup into the control box.
28. Plug the battery backup back into the transformer.
29. Plug the transformer back into the wall outlet and test.
Recline Straps
Tools needed: Needle nose pliers, zip ties, and a chair stand.
1. Unplug the transformer from the wall outlet.
2. Unplug the battery backup cable from the transformer.
3. Gently push the chair over onto the footrest, turn it upside down or, gently push it over onto its
side, opposite of the hand control.
4. Remove the hitch pin, clevis pin(s), and washers that fasten the recline straps to the lift frame.
5. Remove the hitch pin(s), clevis pin(s), and washers that fasten the recline straps to the recline bar.
6. Use the hitch pin(s), clevis pin(s), and washers to fasten the new recline straps to the recline bar.
7. Use the hitch pin(s), clevis pin(s), and washers to fasten the new recline straps to the lift frame.
8. Use hitch pin(s), clevis pin(s), washers, and spacers to fasten the top of the motor to the new
recline straps.
9. Turn the chair over onto the lift frame.
10. Plug the battery backup cable into the transformer.
11. Plug the transformer into the wall outlet and test.
12. Reinstall the seatback if removed.

REVA_040412
15
SCISSOR MECHANISM PARTS
Component Description
RM621 3-Way Recliner Mechs
RM8300 2-Way Recliner Mechs
RM620 Stellar Comfort Mechs
We do recommend both sides be replaced.
RM8300
RM621
RM620

REVA_040412
16
REF # PART NUMBER DESCRIPTION QTY.
1* ZKUC-20 Hand Wand, Standard 2 Button Ultra Comfort 1
1 ZKUC-10 Hand Wand, Standard 2 Button Ultra Comfort 1
2* ZKUC-20-EXT Hand Control Extension 62” Long 1
2 ZKUC-10-EXT Hand Control Extension 62” Long 1
3 GM1500-LM Motor Chair Led Non Transformer 1
4 GM1501-A Motor Chair Transformer 1
5 GM1501-APUS Transformer Cord 1
* Asterisk designates the current style.
Smart Tek System
Models: UC211, UC320, UC330, UC540-SAA, UC540-M, UC540-L, UC660, and UC770
Note: UC480 uses the “All in one” hand control when confi
g
ured with heat and massa
g
e.
SINGLE MOTOR ELECTRICAL SETUP
5
LED Light
DC Powe
r

REVA_040412
17
REF # PART NUMBER DESCRIPTION QTY.
1* ZKUC-20 Hand Wand, Standard 2 Button Ultra Comfort 1
1 ZKUC-10 Hand Wand, Standard 2 Button Ultra Comfort 1
2* ZKUC-20-EXT Hand Control Extension 62” Long 1
2 ZKUC-10-EXT Hand Control Extension 62” Long 1
3 GMOKI-28W Okin 26-28 Wide Motor 2
4 GMOKI-CB Motor Chair Okin 26-28Wide Control Box 4/2003 2
5 GM1502L Motor Chair Battery Back Up Wire with LED 1
6 GM1501-A Motor Chair Transformer 1
7 GM1501-APUS Transformer Cord 1
* Asterisk designates the current style.
DUAL MOTOR ELECTRICAL SETUP
Smart Tek System
Model: UC540M-26
7
6
5
4
LED Light
DC Powe
r

REVA_040412
18
REF # PART NUMBER DESCRIPTION QTY.
1* ZKUC-20 Hand Wand, Standard 2 Button Ultra Comfort 1
1 ZKUC-10 Hand Wand, Standard 2 Button Ultra Comfort 1
2* ZKUC-20-EXT Hand Control Extension 62” Long 1
2 ZKUC-10-EXT Hand Control Extension 62” Long 1
3 GM1500-LM Motor Chair Led Non Transformer 1
4 GM1501-A Motor Chair Transformer 1
5 GM1501-APUS Transformer Cord 1
6 HV3001 DHV Hand Control 1
7 HV3003 Heat Unit 1
8 HV3004 Massage Seat 1
9 HV3004B Massage Back 3
10 HV3002-2 Transformer 1
11 HV3005 DHV Control Box 1
HEAT and MASSAGE ELECTRICAL SETUP
HV3000 COMPLETE
RELAXOR DHV SYSTEM
5
6
7
8
9
10
In-Seat behind knee
Upper-back in middle
Lower-back
LED Light
DC Powe
r
Smart Tek System
Models: UC211, UC320, UC330, UC540-SAA, UC540-M, UC540-L, UC540-26, UC660, UC770
* Asterisk desi
g
nates the current st
y
le.
11

REVA_040412
19
REF # PART NUMBER DESCRIPTION QTY.
1 HV3004 Massage Unit Assembly, Seat 1
2 HV3004B Massage Unit Assembly, Back 3
3 HV3003 Heat Pad 1
4 ZKAD-1 Hand Wand Auto Drive for Lift Chairs 1
5 HV3005 Control Box 1
6 HV3001-UC Heat Massage Deluxe Hand Control Ultra Comfort Line 1
7 GM1500-LM Motor Chair Okin Maxi Lift Motor 1
8 GM756R Motor Chair Okin Maxi Recline Motor 1
9 ZK1100-EXT Hand Control Extension 1
10 HV3002-2 Box Transformer 3 x 3 1/2 x 10 1
11 GM1501-A Motor Chair Transformer 1
12 GM1501-APUS Transformer Cord 1
STELLAR COMFORT ELECTRICAL SETUP
Smart Tek System
Models: UC550-S, UC550-M, UC550-L, UC552, UC556, UC551-S, UC551-M, UC551-L, UC553, UC557
In-Seat behind knee Lower-back
Upper-back in middle
HV3000 COMPLETE
RELAXOR DHV SYSTEM
LED Light
DC Powe
r
12