
39
UK
Trouble
Possible cause
What to do about it
Pump fails to reach
prescribed pressure
Leakage in the water pressure
suction hose and connecting
pieces
Check and retighten screw
connections, replace sealings if
necessary. Tighten hose clips
Pump seals leaking
Have an expert check pump
seals and plungers for wear con-
ditions and replace, if necessary
Lack of water, unsufficient water
supply
Provide sufficient water supply
Dirty water filter
Clean filter, provide clean water
supply
Using wrong spray nozzle
Screw in correct spray nozzle
Excessive pump
pressure
Spray nozzle blocked
Remove and clean nozzle flush
spray lance without spray gun
Using wrong spray nozzle
Mount correct spray nozzle
No flow of cleaning
agents
Filter on cleaning agent suction
hose blocked
Clean filter
Cleaning agent tank empty or
filter basket on suction hose is
not below liquid level
Refill cleaning agents, lower filter
basket
Injector contaminated
Have an expert clean injector
M-variant
Abrupt pressure
impulses
MP-variant
With the spray gun
closed, the ma-
chine permanently
switches on and off
Leakage in pressure system
Check pipes, fittings, pump
connections and spray gun for
leakage, seal leaky, parts or have
them replaced by an expert
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