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Trouble shooting
Symptom
Motor does not start
Motor stops
NB! Pump pressure too high
Pump pressure varies up
and down
Pump pressure too high
Pressure irregular
Pressure too low, but regular
Oil is dripping out
Motor buzzes, but does not start
Machine leaks water
Machine is only running in
by-pass mode
External cause
Fuse blown
Plug defective
Cable defective
Fuse blows
(because of other consumption at
the same time or a too long exten-
sion cable)
Nozzle partly clogged up
Nozzle partly clogged up, bow on
hose
Too long/many extension hoses
Nozzle partly clogged up or wrong
Air in the inlet hose
Inadequate water supply
Nozzle worn, or wrong
NB! Accessories normally cause a
lower pressure
Too low mains voltage
Loss of voltage because of an ex-
tension cable with inadequate cross
section or a too long extension cable.
The high pressure washer has been
inactive for too long
Inlet coupling not tightened
Machine has been running in
by-pass mode for too long
By-pass valve stuck
Internal cause
Switch defective
Motor defective
Internal wires defective
Thermal cutout activated
Check that mains voltage
corresponds to specifications
Thermal cutout activated
Water inlet filter clogged up
Leaky/worn pressure or suction
valves
Valve cone leaky or stuck in open
position
Oil seals worn
Oil plug loose
Rotor stuck
Pressurized water in the pump -
activate the spray handle
Leaky/worn water sleeves
Water inlet coupling leaky in thread
due to heat in the by-pass operation
(possibly new pump)
Activate spray handle when
machine is started. See to it that the
machine is cooled. Activate several
times. Let the machine run with
activated spray handle for 1 minute.
GB
7
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