Invacare M71 service manual Motor Testing, Battery Quality

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

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.

To Motor

4 Pin Motor

Connector

FIGURE 3.2 Motor Testing

Part No 1118377 29 Pronto® M71™