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36 www.pridemobility.com Quantum R-4000
When to See Your Quantum Rehab Provider for Service
The following symptoms could indicate a serious problem with your power chair. If necessary, contact your
Quantum Rehab Provider. When calling, have the model number, serial number, nature of the problem, and the
trouble code if available.
Motor noise
Frayed harnesses
Cracked or broken connectors
Uneven wear on any of the tires
Jerky motion
Pulling to one side
Bent or broken wheel assemblies
Does not power up
Powers up, but does not move
Corrective Maintenance
If the battery condition meter does not light up when you turn on the power:
Check the harness connections. Make sure they are tight.
Check the circuit breaker. Reset it if necessary.
Check the battery connections.
If the above conditions prove normal, you can load test the batteries with a battery load tester. These testers are
available at automotive parts stores. Disconnect both batteries before load testing and follow the directions that
come with the load tester. If either one of the batteries fails the load test, replace both of them. If your power chair
still does not power up, contact your Quantum Rehab Provider.
VII. CARE AND MAINTENANCE
Figure 25. Battery Wiring Diagram
To replace the batteries:
1. Turn off the power to the controller.
2. Push the manual freewheel lever in or up for drive mode.
3. Remove or rotate the leg rests to the side.
4. Release the battery door latches at the back of the power chair.
5. Locate the battery quick disconnects on the frame and
disconnect both of them. See figure 25.
6. Remove the batteries from the power base.
7. Disconnect the battery wiring harness from each battery.
8. Reinstall the battery wiring harness on each new battery.
Make sure that you connect the red wire to the positive (+)
battery terminal and the black wire to the negative (-)
battery terminal.
WARNING! Make sure you tighten the fasteners
so that the connections are secure.
9. Place the batteries back into the power base.
10. Connect the battery quick disconnects according to the
battery wiring diagram label located on the frame. See
figure 25.
11. Reconnect the battery door latches.
12. Reinstall or rotate the leg rests back to position.