Troubleshooting - Shark DE-2010 Operating Instructions Manual

PROBLEM
PUMP RUNNING
NORMALLY BUT
PRESSURE LOW ON
INSTALLATION
FLUCTUATING PRESSURE
PRESSURE LOW AFTER
PERIOD OF NORMAL USE
PUMP NOISY
PRESENCE OF WATER IN
PUMP OIL
WATER DRIPPING FROM
UNDER PUMP
WATER DRIPPING FROM
PUMP PROTECTOR
OIL DRIPPING
EXCESSIVE VIBRATION IN
HIGH PRESSURE HOSE
MOTOR DOES NOT START
WHEN SWITCHED ON
WHEN SWITCHING ON THE
MACHINE, MOTOR HUMS
BUT DOES NOT RUN
MOTOR STOPS
10

TROUBLESHOOTING

POSSIBLE CAUSE
Pump sucking air
Check valves sticking
Unloader valve seat faulty
Nozzle incorrectly sized
Worn piston packing
Valves worn
Blockage in valve
Pump sucking air
Worn piston packing
Insufficient water
Nozzle worn
Suction or delivery valves worn
Suction or delivery lines blocked
Unloader valve seat worn
Worn piston packing
Water temperature excessive
Air in suction line
Broken or weak suction or delivery
valve spring
Foreign matter in valves
Worn bearings
Excessive temperature of water
Oil seal worn
High humidity in air
Piston packing worn
Piston packing worn
O-ring plunger retainer worn
Water supply pressure too high (over
90 PSI)
Spray gun is in the off position for over
5 minutes
Oil seal worn
Irregular functioning of the pump
valves
Plug not well connected or lack of
power supply
Main voltage is insufficient, lower than
the minimum required
The pump is stuck or frozen
Tripped thermal overload due to
overheating
96-720, 97-708, 97-709, 97-710 • REV. 8/04
SOLUTION
Check water supply and possibility of air seepage.
Check and clean or replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Check water supply connections.
Check and replace if necessary.
Check filter and hose for breakage.
Check and replace if necessary.
Check and replace if necessary.
Check and clean if necessary.
Check and replace if necessary.
Check and replace if necessary.
o
Reduce to below 160 F.
Check water supply and connections on suction line.
Check and replace if necessary.
Check and clean if necessary.
Check and replace if necessary.
Reduce to below 160 o F.
Check and replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Check and replace if necessary.
Lower water supply pressure using a regulator.
Turn machine off if not in use for over 5 minutes.
Check and replace if necessary.
Check and replace if necessary.
Check plug, cable and switch.
Check to make sure main power supply is adequate.
Check by turning the motor manually.
Check that main voltage corresponds to the
specifications. Wait a few minutes before turning on
the machine again by resetting the GFCI cord.