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CARE AND MAINTENANCE
WARNING! To avoid possible injury, be sure that the controller's power is turned off and the power chair is not
in freewheel mode before performing this procedure.
Follow these easy steps for a quick and safe tube or tire replacement:
1. Completely deflate the tire (if pneumatic).
2. Use a 17-mm socket wrench and driver to remove the nut from the wheel axle. See figure 27.
3. Pull the wheel off of the axle.
4. Separate the tire and tube from the rim.
5. Remove the old tube and/or tire and replace with the new tube or tire.
6. Slide the wheel back onto the shaft and torque the nut to 16 ft.-lbs.
7. Inflate the tire to 30-35 psi (if pneumatic).
WARNING! Overinflating tires can cause them to explode and can result in personal injury.
WARNING! Do not use a high pressure hose to inflate your tires.
BATTERY REPLACEMENT
1. Remove the seat.
2. Remove the battery boxes and set them on a solid, flat surface.
3. Unfasten the battery box straps on the bottom of the box.
4. Lift up the top cover.
5. Remove the rubber covers from the terminals. Using a 1/2-in. wrench, unscrew the terminal nuts and bolts and discon-
nect the battery wires from the battery terminals.
6. Remove the battery from the bottom cover.
7. Place the new battery into the bottom cover.
8. Connect the red battery wire to the positive (+) terminal. Make sure you tighten the nuts and bolts so that the connection
is secure.
9. Connect the black battery wire to the negative (-) terminal. Make sure you tighten the nuts and bolts so that the connection
is secure. Place the rubber covers over the terminals.
10. Place the top cover back onto the bottom cover.
11. Fasten the straps and make sure the connection is secure. Place
the battery box aside.
12. For the second battery, repeat steps 3 - 11.
13. Make sure that the battery terminals are positioned opposite the
battery charger.
CAUTION! If you do not position the battery terminals on
the opposite side of the charger, you run the risk of shorting
out the batteries and severely damaging your power chair!
14. Place the rear battery box back into the battery well.
15. Place the front battery box back into the battery well.
16. Connect the rear battery box connector and the front battery box
connector to the electronics tray.
17. Install the seat.
18. Connect the joystick/controller harness to its connector on the elec-
tronics tray.
WARNING! Make sure you tighten the fasteners so that the
connections are secure.
MOTOR BRUSHES
The electric motors that power your Quantum Dynamo ATS use carbon
brushes. These brushes may become susceptible to wear over a long
period of time. The motor brushes are the two contacts located inside
the motor assembly that supply power to the motor. They are designed
to provide several thousand hours of operation. But if the brushes
become dirty with carbon deposits or wear out, a motor will run poorly
or not at all.
34
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Figure 28. Motor Brush Caps
WORN MOTOR BRUSH
Figure 29. Motor Brushes
Quantum Dynamo ATS RevE/May03
MOTOR
BRUSH
CAPS
NEW MOTOR BRUSHES
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