Troubleshooting - Landa MPE5-5000 Manual Del Operador

MPE SERIES PRESSURE WASHER
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

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 valves
blocked
Unloader valve seat worn
Worn piston package
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
LANDA MPE • Rev. 5/02
OPERATOR'S MANUAL
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 clean out 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.
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 140 o F.
Check and replace if necessary.
Check and change oil twice as often.
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.
15