Motor Testing - Invacare Pronto M71 Service Manual

Motor Testing

NOTE: For this procedure, refer to FIGURE 3.2.
1. On the 4-pin motor connector, locate the two contacts in the red and black housings.
2. Set the digital multimeter to measure ohms (Ω).
3. Measure the resistance between the two motor contacts.
NOTE: A normal reading is between .5 to 5 ohms. A reading of O.L. (open line) or in excess of 15
ohms indicates a problem. High readings are generally caused by bad connections and/or damaged
brushes. Contact Invacare.
Part No 1118377
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SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Charge
Digital
r Port
Voltmeter
BATTERY
QUALITY
0 to 2 volts Good
2 to 2.5 volts Poor
2.5 or more Bad
FIGURE 3.1 Field Load Test
To Motor
4 Pin Motor
Connector
FIGURE 3.2 Motor Testing
29
Pronto® M71™