Troubleshooting – Gorman-Rupp Pumps 4D-X3 1P User Manual
Page 14
TROUBLE
POSSIBLE CAUSE
PROBABLE REMEDY
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
D SERIES
OM--01515
TROUBLESHOOTING
PAGE D -- 1
TROUBLESHOOTING --- SECTION D
Review all SAFETY information in Section A.
Before attempting to open or service the
pump:
1. Familiarize yourself with this manual.
2. Shut off incoming power to the motor
and lock it out to ensure that the
pump will remain inoperative.
3. Allow the pump to completely cool if
overheated.
4. Close the discharge valve (if used).
5. Drain the pump.
Air leak in suction line.
Correct leak.
Lining of suction hose collapsed.
Replace suction hose.
Integral suction or discharge check
Clean valves, check that flange nuts
valve clogged, binding, or not seating
are tight.
properly.
Cracked or broken diaphragm.
Replace diaphragm.
Diaphragm not securely in place.
Secure diaphragm.
Strainer clogged.
Check strainer and clean if necessary.
Air leak in suction line.
Correct leak.
Suction intake not properly submerged. Check installation.
Lining of suction hose collapsed.
Replace suction hose.
Cracked or broken diaphragm.
Replace diaphragm.
Diaphragm not securely in place.
Secure diaphragm.
Strainer clogged.
Check strainer and clean if necessary.
Integral suction or discharge check
Clean valves, check that flange nuts
valve clogged, binding, or not seating
are tight.
properly.