WDM NE 4 113-4-220, Operation Manual

Page: 12 / 28

Operation Manual.
12
4. Starting the pump.
Start the pump by turning on the power to the motor as instructed in the
motor manual and follow this recommendation:
• Upon the pump reaching full operating speed, begin to open the
discharge gate valve slowly until complete system flow is
achieved.
• 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.
• Check and record Voltage, amperage per phase, and kilowatts.
• Check system by filling the sump and allowing pump to operate.
Voltage regulation.
While the motor will operate satisfactorily under these voltage and
frequency variations, such operation may not be in accordance with
the standards established for operation in underrated conditions:
•
Variation in the voltage may not exceed ± 10% the rating
specified on the motor data plate.
•
Frequency variation may not exceed ± 5% the rating
specified on the motor data plate.
•
The sum of the voltage and frequency variation may not
exceed ± 10% the motor rating while the frequency variation
does not exceed ± 5%.
Pump shutdown.
The following shutdown procedures will apply in most normal shut-
downs for the WDM pumps types NE.
•
Close the discharge gate valve slowly to prevent hydraulic
shock, and then cut power to the motor.
•
Cut power to motor.