Gorman-Rupp Pumps PAH3B60-4045H 1493144 and up - Manual (Page 20)

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.
Discharge check valve contami­
nated, damaged, or unable to seat. Clean or replace check valve.
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.
Air compressor damaged or belts bro­
ken. Check and repair/replace.
Eductor clogged. Check and clean eductor.
PAH SERIES OM-06474
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. Shut down the engine and discon­
nect the positive battery cable to
ensure that the pump will remain
inoperative.
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.
This pump is equipped with an automat­
ic starting system, and is subject to au­
tomatic restart. Keep hands and cloth­
ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per­
forming any maintenance. Failure to do
so may result in serious personal injury.