Troubleshooting - section d – Gorman-Rupp Pumps 04B3-F4L 1316966 and up User 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.