Check 2: electrical troubleshooting – Bell & Gossett P2002290A Series e-90 ECM Motor IOM User Manual
Page 12
Check 2: Electrical Troubleshooting
1. Disconnect or remove power to the equipment being serviced and allow four (4)
minutes for the capacitors to discharge any residual voltage.
2. Check the rotation and speed of the motor. Determine if the motor can spin
IUHHO\E\KDQGZLWKRXWHIIRUWRUDVVLVWHGPHDQV,IDQ\ELQGLQJRFFXUVUHSODFH
the motor
and control unit.
3. 'HWHUPLQHZKHWKHUWKHV\VWHPLVZLUHGIRU9$&SRZHURU9$&
SRZHU
4. Disconnect the power cord from the connector on the control unit. Inspect
th
eSRZHUFRUGIRUEHQWGDPDJHGRUUHFHVVHGZLUHVDQGWHUPLQDOV>)LJXUH1@
Figure 1
10
Disconnect or remove AC power to the equipment being serviced and allow four
(4) minutes for the capacitors to discharge any residual voltage.
5.
Proceed to Check 3.
6.
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