SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Part No 1118377 29 Pronto® M71™
FIGURE 3.1 Field Load Test
Motor Testing
NOTE: For this procedure, refer to FIGURE3.2.
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 read ing is between .5 to 5 oh ms. A reading of O.L. (o pen line) or in excess of 15
ohms indicates a problem. High readings are generally caused by bad connections and/or damaged
brushes. Contact Invacare.
FIGURE 3.2 Motor Testing
Charge
r Port Digital
Voltmeter
BATTERY
QUALITY
0 to 2 volts Good
2 to 2.5 volts Poor
2.5 or more Bad
4 Pin Motor
Connector
To Motor