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 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 4-pin Motor Connector
Cap
4 Pin Motor
Connector
FIGURE 10.4 Electro-Mechanical Parking Brake Testing
Part No. 1125038
WARNING
Motor
101
SECTION 10—MOTORS
MK and MK6i 4-pin Motor Connector
5
Cap
4 Pin Motor Connector
Pronto
Motor
®
M91™and M94™