Gorman-Rupp Pumps 02F1-GR 642659 and up - Manual (Page 18)

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
Strainer clogged. Check strainer and clean if neces­
sary.
Leaking or worn seal or pump gasket. Check pump vacuum. Replace
leaking or worn seal or gasket.
Lining of suction hose collapsed. Replace suction hose.
Air leak in suction line. Correct leak.
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE Air leak in suction line. Correct leak.
Lining of suction hose collapsed. Replace suction hose.
Leaking or worn seal or pump gasket. Check pump vacuum. Replace
leaking or worn seal or gasket.
Suction intake not submerged at
proper level or sump too small. Check installation and correct
submergence as needed.
Not enough liquid in casing. Add liquid to casing. See
PRIMING.
Pump speed too slow. Check power source output; con­
sult power source operation man­
ual.
OM-01155 0 SERIES
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. Switch off the vehicle ignition and re­
move the key, or take other precau­
tions to ensure that the pump will re­
main inoperative.
3. Allow the pump to completely cool if
overheated.
4. Check the temperature before open­
ing any covers, plates, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.