Specifications Information and Repair Parts Manual
MSV1, MSV3 and MSV5 Series
5910-251-00
5
10/2016
Problem
Possible Cause(s)
Corrective Action
The pump does not run
1.
No power at motor.
1.
Check for voltage at motor terminal box. If
no voltage at motor; check feeder panel for
tripped circuits and reset.
2.
The Fuses are blown.
2.
Replace fuses.
3.
Motor starer overloads are burned or
have tripped out.
3.
Check for voltage on line and load side for
starter. Consult certified electrician.
4.
The motor is defective
4.
Replace motor.
The pump runs but at reduced
capacity, low discharge pressure
or does not deliver
1.
Wrong Rotation
1.
Check wiring for proper connections.
2.
Pump is air locked
2.
Turn pump off, purge the air from the pump
via the vent plug.
NOTE:
May take multiple
attempts to vent all air from the pump.
Make sure the bypass valve is closed and
installed correctly.
3.
The pump inlet pressure is too low.
3.
Check inlet conditions.
4.
The pump draws air.
4.
Check inlet conditions.
Turn pump off, purge the air from the pump
via the vent plug.
NOTE:
May take multiple
attempts to vent all air from the pump.
Make sure the bypass valve is closed and
installed correctly.
5.
Strainers, check valves or foot valves
are clogged
5.
Remove strainer, screen or valve and
inspect. Clean and replace.
6.
Incorrect drain plug installed.
6.
If the proper drain plug that was supplied
with the pump originally was replaced with
standard plug, water will recirculate inter-
nally. Replace with Proper plug.
7.
High friction loss in line
7.
Remove kinks and elbows, reduce length
8.
Discharge head too high
8.
Lower end of discharge line.
9.
Clogged impeller
9.
Remove clog
10. Worn/damaged impeller
10. Replace parts as required
Leakage in shaft seal
1.
The shaft seal is defective
1. Replace the shaft seal.
Noise
1.
Cavitation
1.
Check the inlet conditions.
2.
The pump does not rotate freely.
2.
Check for frictional resistance as a result
of incorrect pump shaft position. Adjust the
pump shaft per manual instructions.
3.
Strainers, check valves or foot valves
are clogged
3.
Remove strainer, screen or valve and
inspect. Clean and replace.
Multistage Centrifugal Pumps
Содержание MSV1 Series
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