Gorman-Rupp Pumps 06C1-GHH 1071445 and up - Manual (Page 24)

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP REQUIRES
TOO MUCH
POWER
BEARINGS RUN
TOO HOT
EXCESSIVE NOISE
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
(CONT'D)
OM-03179 0 SERIES
TROUBLESHOOTING PAGE D - 2
Discharge throttling valve partially Open discharge valve fully; check pip‐
closed; check valve is installed improp‐ ing installation.
erly.
Impeller or other wearing parts worn or Replace worn or damaged parts.
damaged. Check that impeller is properly
centered and rotates freely.
Universal joint drive misaligned. Align drive.
Pump speed too high. Check driver output.
Discharge head too low. Adjust discharge valve.
Cavitation in pump. Reduce discharge pressure and/or
pump speed.
Pumping entrained air. Locate and eliminate source of air
bubble.
Pump or drive not securely mounted. Secure mounting hardware.
Universal joint drive misaligned. Align drive.
Low or incorrect lubricant. Check for proper type and level of
lubricant.
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.
Suction and discharge lines not properly Check piping installation for proper
supported.
support.
Drive misaligned. Align drive properly.
Bearings in power source or gearbox Check bearings.
worn or binding.