GMS SERIES
OM-04386
PAGE D-3
TROUBLESHOOTING
TROUBLESHOOTING CHART
(Cont.)
TROUBLE
POSSIBLE CAUSE
PROBABLE REMEDY
Power source undersized.
Check power requirements for applica
tion; resize as required.
EXCESSIVE
NOISE OR
VIBRATION
Pumping entrained air.
Check liquid level.
Pump operating outside designed
operating range.
Check discharge head and flow; adjust as
required to meet performance specifica
tions.
PUMP REQUIRES
TOO MUCH
POWER
(Cont.)
Pump and/or drive mounting not
secure; drive misaligned.
Tighten mounting hardware; realign
drive.
Rotating parts worn or damaged; im
proper end clearance.
Replace defective parts; check end
clearance.
Liquid in pump solidified.
Clear or heat.
Relief valve chatter.
Increase pressure setting.
Lubrication required.
Add lubricant, as needed.
Lubrication required.
Add lubricant, as needed.
Corrosive liquid.
Check local distributor or factory for
parts compatibility with liquid; check liq
uid for contamination.
EXCESSIVE
WEAR
Exceeding operating limits.
Check performance data in
Pump Speci
fications Bulletin
.
Insufficient end clearance.
See
SETTING END CLEARANCE
in
Maintenance And Repair, Section E
.
Pump running dry.
Add liquid to prime (
See Operation, Sec
tion C
); check liquid flow.
Pump and/or drive mounting not se
cure; drive misaligned; piping incor
rectly installed.
Tighten mounting hardware; realign
drive; check piping.
Insufficient lubrication.
Add lubrication and maintain at proper lev
el.
Pump “starving” or liquid vapor
izing in suction line.
Increase suction pipe size or reduce
length; position pump below liquid level.
Pump and/or piping not secure; drive
misaligned.
Anchor base or piping, realign drive.
Insufficient internal clearances.
Consult factory.
Abrasive liquid.
Consult factory.
Contaminated liquid.
Check liquid source; install strainer.
