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Troubleshooting – Gorman-Rupp Pumps 04B3-F4L 1242057 thru 1316965 User Manual

Page 19

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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. Set the HAND-OFF-AUTO switch to

‘OFF’, and disconnect 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.

If the pump is equipped with the option-

al automatic starting system, it is sub-

ject to automatic restart. Keep hands

and clothing away from the unit to pre-

vent injury during automatic operation.

Disconnect the positive battery cable

before performing any maintenance.

Failure to do so may result in serious

personal injury.

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.