Gorman-rupp-pumps VG1 1/4B3-B 1260463 and up User Manual download pdf (Page 21)

VG-SERIES OM−03289

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. Lock out or disconnect the power

source to ensure that the pump will

remain inoperative.

3. Allow the pump to completely cool if

overheated.

4. Check the temperature before open-

ing any covers, plates, or plugs.

5. Close the suction and discharge

valves.

6. Vent the pump slowly and cautiously.

7. Drain the pump.

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

PUMP FAILS TO

PRIME

Air leak in suction line.

Lining of suction hose collapsed.

Correct leak.

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 neces-

sary.

PUMP STOPS OR

FAILS TO DELIVER

RATED FLOW OR

PRESSURE

Air leak in suction line. Correct leak.

Strainer clogged. Check strainer and clean if neces-

sary.

Suction intake not submerged at

proper level or sump too small.

Check installation and correct sub-

mergence as needed.

Auxiliary priming device faulty or im-

properly installed.

Repair priming device or check in-

stallation.

Discharge check valve open. Check position of handle; close

valve.

Pump running backwards. Check direction of rotation.

Impeller or other wearing parts worn

or damaged.

Replace worn or damaged parts.

Check that impeller is properly

centered and rotates freely.

Impeller clogged. Free impeller of debris.

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Gorman-rupp-pumps VG1 1/4B3-B 1260463 and up User Manual Page 21

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