Gorman-Rupp Pumps 4D-B 461594 and up - Manual (Page 14)

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP REQUIRES
TOO MUCH
POWER
PUMP
CLOGS FRE-
QUENTLY
EXCESSIVE NOISE
BEARINGS
RUN TOO HOT
OM--01505 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.