Component Test Procedures 2-19
Checking the Main Fan Motors
1. Remove power from the drive. Refer to Removing Power from the
Drive on page 3-3.
2. Remove the covers from the power structure. Refer to Removing the
Covers from the Power Structure on page 3-13.
3. Disconnect the first fan motor from its inverter.
4. Measure the resistance of the fan windings. If the resulting
measurements are not similar to those in Table 2.H
below, replace the
fan (See Removing the Main Fans on page 3-24
).
Table 2.H Correct Fan Measurements
5. Reconnect the first fan motor to its inverter.
6. Repeat steps 3-4 for the second and third fan motor.
Connection Wires Resistance ± 5%
Brown-Black 60
Blue-Black 26
Blue-Brown 34
Resistance to ground
f(infinity)
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