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8 Troubleshooting
Fault
Pressure drop
Pressure fl uctuations
The motor does not start when
the cleaner is switched on
Cause
> Air in the system
> High-pressure nozzle blok-
ked/worn
> Pressure control on the
spray pipe is not set correct-
ly.
> Pump draws in air (only
possible in suction mode)
> Lack of water
> Water inlet hose is too long
or its cross-section too small
> Lack of water caused by
blocked water fi lter
> Lack of water because max.
permissible suction height
has not been heeded
> The plug is not inserted pro-
perly, i.e. there is no current
> The mains fuse is switched
off
Remedy
•
Vent the system by opera-
ting the spray gun several
times at short intervals. If
necessary, operate the clea-
ner for a short time without
the high-pressure hose
connected
•
Clean/replace the high-pres-
sure nozzle
•
Set the required working
pressure
•
Check that the suction set is
air-tight
•
Open the tap
•
Use specifi ed water inlet
hose
•
Clean the water fi lter in the
water connection (never
work without water fi lter)
•
See instructions
•
Check the plug, lead and
switch and if necessary have
them replaced by a trained
electrician
•
Switch on the mains fuse
39
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