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14
HE SERIES PRESSURE WASHER
OPERATOR’S MANUAL
TROUBLESHOOTING
SHARK HE • Rev 7/02
PROBLEM
POSSIBLE CAUSE
SOLUTION
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW ON
INSTALLATION
Pump sucking air
Check water supply and possibility of air seepage.
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
PRESSURE
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.
Insufficient water
Check filter 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 package
Check and replace if necessary.
Water temperature excessive
Reduce to below 140
o
F.
PUMP NOISY
Air in suction line
Check water supply and connections on suction 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.
Water temperature excessive
Reduce to below 160
o
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 regulator.
Spray gun is in the off position for over 5
minutes
Turn machine off if not in use for over 5 minutes.
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 insufficient, 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
overheating
Check that main voltage corresponds to specifications
for the HE. Wait a few minutes before turning on the
machine again by resetting the GFCI on the cord.
Содержание HE-2010
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