Shark DE-352007A Operator's Manual download pdf (Page 10)

9.800-085.0 • 8.919-015.0 • Rev. 01/11

PRESSURE WASHER Troubleshooting Guide

TROUBLESHOOTING

PROBLEM POSSIBLE CAUSE SOLUTION

PUMP RUNNING

NORMALLY BUT

PRESSURE LOW ON

INSTALLATION

Pump sucking air Check water supply and possibility of air.

Check valves sticking Check and clean or replace if necessary.

Unloader valve seat faulty Check and replace if necessary.

Nozzle incorrectly sized Check and replace if necessary.

Worn piston packing Check and replace if necessary.

FLUCTUATING PRES-

SURE

Valves worn Check and replace if necessary.

Blockage in valve Check and replace if necessary.

Pump sucking air Check water supply connections.

Worn piston packing Check and replace if necessary.

Insufﬁ cient water Check ﬁ lter and hose for breakage.

PRESSURE LOW

AFTER PERIOD OF

NORMAL USE

Nozzle worn Check and replace if necessary.

Suction or delivery valves worn Check and replace if necessary.

Suction or delivery lines blocked Check and clean if necessary.

Unloader valve seat worn Check and replace if necessary.

Worn piston packing Check and replace if necessary.

Water temperature excessive Reduce to below 160° F.

PUMP NOISY

Air in suction line Check water supply and connections on suc-

tion line.

Broken or weak suction or delivery valve

spring

Check and replace if necessary.

Foreign matter in valves Check and clean if necessary.

Worn bearings Check and replace if necessary.

Excessive temperature of water Reduce to below 160° F.

PRESENCE OF

WATER IN

PUMP OIL

Oil seal worn Check and replace if necessary.

High humidity in air Check and replace if necessary.

Piston packing worn Check and replace if necessary.

WATER DRIPPING

FROM UNDER PUMP

Piston packing worn Check and replace if necessary.

O-ring plunger retainer worn Check and replace if necessary.

WATER DRIPPING

FROM PUMP

PROTECTOR

Water supply pressure too high (over

90 PSI)

Lower water supply pressure using a regula-

tor.

Spray gun is in the off position for over

5 minutes

Turn machine off if not in use for over 5 min-

utes.

OIL DRIPPING

Oil seal worn Check and replace if necessary.

EXCESSIVE

VIBRATION IN HIGH

PRESSURE HOSE

Irregular functioning of the pump

valves

Check and replace if necessary.

MOTOR DOES

NOT START WHEN

SWITCHED ON

Plug not well connected or lack of power

supply

Check plug, cable and switch.

WHEN SWITCHING

ON THE MACHINE,

MOTOR HUMS BUT

DOES NOT RUN

Main voltage is insufﬁ cient lower than

the minimum required

Check to make sure main power supply is

adequate.

The pump is stuck or frozen Check by turning the motor manually.

MOTOR STOPS

Tripped thermal overload due to over-

heating

Check that main voltage corresponds to the

speciﬁ cations. Wait a few minutes before turn-

ing on the machine again by resetting the GFCI

cord.

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Shark DE-352007A Operator's Manual Page 10

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