Operation Manual.
14
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.
4.
Starting the pump.
Once the pump is primed, start the pump by turning on the power to the
motor as instructed in the motor manual and follow this recommendation:
•
Check for pressure leaks, make an immediate visual inspection
of the pump and suction piping.
•
Upon the pump reaching full operating speed, begin to open the
discharge gate valve slowly until complete system flow is
achieved.
•
The discharge pipe should also be checked for pressure leaks.
•
If there are pressure gauges on the pump, record pressure
readings to use as a reference in the future
•
Also make sure the pump is falling within the parameters of the
performance curve.
CAUTION.
As pumps should not be operated while dry, be extremely
cautious in making sure the motor is energized only momentarily, just
long enough to determine if the rotation is proper.
WARNING.
If a pump is operated without an approved coupling guard in
place, it may result in injury to personnel operating the
pump. Coupling guard should be installed on flexible
coupled units.