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Gorman-Rupp Pumps 06C1-GAR 1289163 and up User Manual

Page 18

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TROUBLE

POSSIBLE CAUSE

PROBABLE REMEDY

PUMP STOPS OR

FAILS TO DELIVER

RATED FLOW OR

PRESSURE (cont.)

PUMP REQUIRES

TOO MUCH

POWER

Discharge head too low.

Adjust

discharge

valve.

EXCESSIVE NOISE

Cavitation in pump.

Reduce suction lift and/or friction
losses in suction line. Record vac-
uum and pressure gauge readings
and consult local representative or
factory.

Secure mounting hard-
ware.

Pump or drive not securely mounted.

Locate and eliminate source of air
bubble.

Pumping

entrained

air.

Pump speed too high.

Check driver output; check that
sheaves or couplings are correctly
sized.

Suction lift or discharge head too high.

Check piping installation and install
bypass line if needed. See

INSTAL-

LATION.

Low or incorrect lubricant.

Check for proper type and level of
lubricant.

Pump speed too slow.

Check power source output; con-
sult power source operation man-
ual.

BEARINGS RUN

TOO HOT

Bearing temperature is high, but within
limits.

Check bearing temperature regu-
larly to monitor any increase.

Low or incorrect lubricant.

Check for proper type and level
of lubricant.

Suction and discharge lines not prop-
erly supported.

Check piping installation for proper
support.

Drive misaligned; piping improperly in-
stalled.

Bearings in power source or gearbox

Check bearings.

worn or binding.

Realign drive and piping at operat-
ing temperature. Add expansion
joints if required.

Discharge line clogged or restricted;
hose kinked.

Check discharge lines; straighten
hose.

Universal joint drive misaligned.

Align drive.

Universal joint drive misaligned.

Align drive.

Impeller or other wearing parts worn
or damaged.

Replace worn or damaged parts.
Check that impeller is properly cen-
tered and rotates freely.

OM--05688

0 SERIES

TROUBLESHOOTING

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