Motor Rotation - WDM GE Series Operation Manual

Operation Manual.
been in storage for any length of time, whether used or new,
then consult the motor instructions before starting. Use the
motor data plate to check the voltage, phase, and line circuit
frequency.
•
In order to make sure it rotates freely, use your hands to turn
the rotating element..
•
All piping should be checked for leaks. Also all flange bolts
should be checked to make sure they are tightened securely..
•
Write down the serial number of the pump for future
reference.
•
Perform an insulation (or megger) test on the motor before
putting the pump into service.
•
Resistance values (ohms), voltage, and current (amps)
should all be recorded and saved for future reference.

Motor rotation.

couplings are fully disconnected and separated physically. Serious
damage will occur to both the pump and driver if the rotation is wrong.
Before checking motor rotation, make sure all components in the
system are wired and properly connected. If so then check the motor
rotation as follows::
If a 3 phase unit (only) – energize the motor briefly to make sure the
rotation is going in the direction indicated by the arrow in the pump
volute. If the rotation is not following the arrow, then switch the two
wires from the motor starter's terminal.
cautious in making sure the motor is energized only momentarily, just
long enough to determine if the rotation is proper.
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CAUTION.
To check the driver rotation, make sure pump and driver
CAUTION.
As pumps should not be operated while dry, be extremely