Landa MPE5-50024B, Operator'S Manual

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8.914-000.0 • 8.917-410.0 • 9.800-340.0 • 8.919-014.0 • Rev. 06/12
9
PRESSURE W
ASHER
T
roub
leshooting
Guide
TROUBLESHOOTING
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 clean out if necessary.
Faulty or misadjusted
unloader valve Tampering with the factory setting may
cause personal injury and/or property
damage, and will void the
manufacturer's warranty.
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 valves blocked Check and clean if necessary.
Unloader valve seat worn Check and replace if necessary.
Worn piston package Check and replace if necessary.
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.
Excessive temperature of water Reduce to below 140°F.
PRESENCE OF WATER
IN PUMP OIL Oil seal worn Check and replace if necessary.
High humidity in air Check and change oil twice as often.
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
regulator.
Spray gun is in the off position for
over 1-2 minutes Turn machine off if not in use for over 1-2
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