Motor Testing - Invacare Pronto M91 Service Manual

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING

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 0.2 and 5 ohms. A reading of 0 ohms or in excess of 15 ohms
indicates a problem. High readings are generally caused by bad connections and/or damaged
brushes. Contact Invacare.
MKIV 4-pin Motor Connector
Cap
4 Pin Motor
Connector
Pronto® M91™and M94™
Charger Port
Digital
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
Motor
FIGURE 3.2 Motor Testing
MK & MK6i 4-pin Motor Connector
5
Cap
4 Pin Motor Connector
34
Motor
Part No. 1125038