Gorman-Rupp Pumps 3D-E1.5 1P 883504 and up - Manual (Page 15)

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
D SERIES OM-03604
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 man­
ual.
2. Lock out and tag out incoming
power to ensure that the pump will
remain inoperative.
3. Allow the pump to completely cool
if overheated.
4. 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.