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Gorman-Rupp Pumps 3D-B 883512 and up User Manual

Page 16

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TROUBLE

POSSIBLE CAUSE

PROBABLE REMEDY

PUMP REQUIRES
TOO MUCH
POWER

PUMP
CLOGS FRE-
QUENTLY

EXCESSIVE NOISE

BEARINGS
RUN TOO HOT

OM−01490

D SERIES

TROUBLESHOOTING

PAGE D − 2

Liquid solution too thick.

Dilute if possible.

Integral discharge check valve clogged

Clean valve.

or binding.

Bearings in motor or gearbox

Check bearings.

worn or binding.

Integral suction or discharge check

Clean valves, check that flange nuts

valve clogged, binding, or not seating

are tight.

properly.

Liquid solution too thick.

Dilute if possible.

Pump, gearbox, or motor not

Check and tighten mounting bolts.

securely mounted.

Gearbox or motor not properly

See LUBRICATION in MAINTE-

lubricated.

NANCE AND REPAIR.

Bearing temperature is high, but within

Check bearing temperature regularly

limits.

to monitor any increase.

Low or incorrect lubricant.

Check for proper type and level of
lubricant.

Drive misaligned.

Align drive properly.