ALANTE DX/LT_SG_REVA_030112
5
Component:
Park
Brake (2)
Location:
End of each motor.
Function:
Park Brake for the motor.
Connections:
Each park brake has a 2 pin male connector, which connects to each motor harness.
Failure Signs:
Power chair will not move or moves sluggishly. No audible click when the chair stops.
T
ests:
Test for open circuit. See Flash Codes #9.
Expected readings:
Less than 80 ohms, but not shorted.
Serviceable:
Replace if outside this range.
Component
: Circuit Breaker
Location:
Mounted on the front of the power base.
Function:
Protects battery circuit from current overload. When the current draw exceeds the breaker rating, the
circuit breaker will open.
Connections:
Terminals on the circuit breaker are connected to the batteries through the power harness.
Failure Signs:
Opens repeatedly. This may indicate a failed circuit breaker or short in the wiring. Also, may
open if the motors are overloaded (from excessive weight, short in system, etc.)
Test:
Measure the resistance across the circuit breaker. Also check for continuity across the power harness from
the circuit breaker to each battery. Refer to the diagrams on pages 20 and 21.
Expected reading:
Less than 10 ohms.
Serviceable: Circuit breaker must be replaced with exact current rating.
Replace power harness if no
continuity.
Component:
Battery Charger
Location:
Stored inside a pouch on the seatback.
Function:
Recharges batteries.
Connections:
XLR connector connects to the charger port on the control module and/or the battery box.
Failure Signs:
Charger power LED does not go on. Batteries will not charge.
Tests:
Charger tests vary. Some chargers may be tested by measuring positive and negative leads on the charger
connector. Other chargers need to see battery voltage before charging.
Expected reading:
Varies with charger.
Serviceable:
Replace if necessary.
Component:
Motors (2)
Location:
Left and right sides of the power base.
Function:
Drives the power chair.
Connections:
The right motor harness connects to M1 on the power module and the left motor harness connects
to M2 on the power module.
Failure Signs:
Power chair runs slowly or not at all.
Tests:
Test for internal resistance in motor. Test motor wires for continuity. See Flash Codes #2, #3, #4, and #5.
Expected readings:
Internal resistance is less than 5 ohms but not shorted.
Note: Can be as low as 0.3 ohms.
Serviceable:
Replace motor if outside range.