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Whaleflo DC AC Diaphragm Water Pump FAQ Sep 23,2019
Diaphragm Pump Trouble Shooting

Problem

Cause

Solution

Motordoesn’t start

Electrical connections

Blown fuse,main switch, and ground connection

Motor hot

Thermal Protect, Wait until motor cooling

Incorrect Voltage

Use correct voltages (+/-10%)

Pump can not shut off

Restricted inlet

check the strainer, hose, valves

loose drive assembly

tighten the screw

Air in the system

check all fixtures

Incorrect Voltage

Use correct voltages (+_10%)

By-pass set higher than shut-off

Lower it down

Noisy

Restricted inlet

check the strainer, hose, valves

Air in the system

check all fixtures

Crude Mounting surface

install on flat surface

loose drive assembly

tighten the screw ,and the mounting feet

Leaks

loose drive assembly

tighten the screw

switch or pump assembly rupture

check the switch and pump head assembly, and replace the kits

Low pressure/flow

Air in the system

check all fixtures

leak

check all fixtures

Incorrect Voltage

Use correct voltages (+_10%)

Doesn’t Draw Water


Problems on the suction line

1.Checksuction line,pipes or fittings are sucking in air.Inspected the entire suction line, ensured that pipes and fittings are securely fastened.

Clogged suction filter

2.Clogged suction filter, if the suction line is intact and functioning, you must remove the suction filter and clean it if it is clogged.

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