Pride Mobility 1420 - Manual (Page 43)

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Quantum Jazzy 1400 Series Rev D May04 www.pridemobility.com
Motor Brushes
The electric motors that power your power chair 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. However, if the brushes become dirty with carbon deposits or wear out, the
motor will run poorly or not at all.
V I I I . C A R E A N D M A I N T E N A N C E
Figure 26. Motor Brushes
WORN MOTOR BRUSH NEW MOTOR BRUSHES
Figure 25. Motor
MOTOR BRUSH CAP
CAUTION! If an inspection determines excessive
wear on the brushes, they must be replaced or
motor damage will result. Failure to maintain the
brushes could void your power chair’s warranty.
To inspect or replace the motor brushes:
1. Remove the seat and body shroud.
2. Unscrew the motor brush caps. See figure 25.
3. Remove the brushes.
4. Inspect for wear. See figure 26.
5. Replace brushes, if necessary. Contact your authorized Pride
provider for replacement brushes.
When to See Your Authorized Pride Provider for Service
The following symptoms could indicate a serious problem with your
power chair. If necessary, contact your authorized Pride provider. When
calling, have the model number, serial number, nature of the problem, and
the trouble code if available.
n Motor noise
n Frayed harnesses
n Cracked or broken connectors
n Uneven wear on any of the tires
n Jerky motion
n Pulling to one side
n Bent or broken wheel assemblies
n Does not power up
n Powers up, but does not move
Corrective Maintenance
If the battery condition meter does not light up when you turn on the power:
n Check the harness connections. Make sure they are tight.
n Check the circuit breaker. Reset it if necessary.
n 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 authorized Pride provider.