Gorman-Rupp Pumps 03H1-GX390 1178614 and up - Manual (Page 16)

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO
PRIME
Strainer clogged. Check strainer and clean if neces­
sary.
Suction lift or discharge head too high. Check piping installation and install
bypass line if needed. See INSTAL­
LATION.
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.
Not enough liquid in casing. Add liquid to casing. See
PRIMING.
Suction check valve contaminated or
damaged. Clean or replace check valve.
Suction check valve or foot valve
clogged or binding. Clean valve.
Pump speed too slow. Check engine output; consult en­
gine operation manual.
OM-04728 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. Shut down the engine and discon­
nect the spark plug wire 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.