Testing the Motor (Figure 17)
If any motor fails the below tests, the motor is defective and
must be replaced.
1.
Using an ohmmeter check the resistance from any one
of the motor connector pins to the aluminum end plate of
the motor. This resistance should be greater than 100k
ohms.
2.
Check the resistances between each of the three motor
connector pins. These should all read approximately the
same resistance within an ohm.
3.
Check to see if the blower wheel spins freely.
Figure 17. Motor Test
31-5000729 Rev. 0
Scale
Measurement Range in Words
2 M
two megohms - two million ohms
two hundred kil-ohms -
200 K
two hundred thousand ohms
twenty kilo-ohms -
20 K
twenty thousand ohms
two kilo-ohms -
2 K
two-thousand ohms
200
two hundred ohms
BACK OF CONTROL
MODULE
Figure 18. Drip Loop
Page 19
ohms
0 - 2,000,000
0 - 200,000
0 - 20,000
0 - 2,000
0 - 200
CONNECTOR
ORIENTATION
BETWEEN 4 AND 8
O'CLOCK
DRIP LOOP