Gorman-Rupp Pumps 04B3-F4L 1316966 and up - Manual (Page 18)

0 SERIES OM-01216
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. Switch off the engine ignition, dis­
connect the positive battery cable
and take precautions to ensure
that the pump will remain inopera­
tive.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau­
tiously.
7. Drain the pump.
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Not enough liquid in casing. Add liquid to casing. See PRIMING.
Suction check valve contaminated Clean or replace check valve.
or damaged.
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 lift or discharge head too high. Check piping installation and
install bypass line if needed. See
INSTALLATION.
Strainer clogged. Check strainer and clean if
necessary.
Suction check valve or foot valve Clean valve.
clogged or binding.
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.
Strainer clogged. Check strainer and clean if
necessary.