Electro-Mechanical Parking Brake Testing - Invacare Pronto M91 Service Manual

Electro-Mechanical Parking Brake Testing

NOTE: For this procedure, refer to FIGURE 10.4.
1. On the four-pin motor connector, locate the side-by-side connectors in the black
housings (FIGURE 10.4).
2. Set the digital multimeter to read ohms (Ω).
3. Measure the resistance between the two (2) brake contacts. A normal reading is
between 45-100 ohms depending on the motor. A reading of 0 ohms (Ω) or a very high
reading; i.e., MEG ohms or O.L. (out of limit) indicates a shorted brake or an open
connection respectively. If either condition exists, send the motor to Invacare Technical
Service for inspection/repair.
A shorted electro-mechanical brake will damage the brake output section in the
controller. DO NOT connect a shorted electro-mechanical brake to a good control-
ler module. A shorted brake MUST be replaced.
NOTE: A bad motor can damage the controller module but a bad controller will NOT damage a
motor.
.
MKIV Four-pin Motor Commector
Cap
4 Pin Motor
Connector
Black Black
Black
Red
FIGURE 10.4 Electro-Mechanical Parking Brake Testing
Part No. 1125038
WARNING
Motor
81
SECTION 10—MOTORS
MK5 Four-pin Motor Commector
Cap
4 Pin Motor Connector
Pronto
Motor
® ™
M91 and M94