FAULT
PROBABLE CAUSE
REPAIR
The pump do-
esn’t reach
the
necessary
pressure.
Insufficient flow.
Water inlet filter is clogged.
Suction/delivery valves are
clogged or worn out.
Pressure regulator valve set
on minimum
The nozzle is worn out.
Check that the delivery rate is 30% higher than
the value stated on the appliance’s technical
data plate.
Remove and clean the filter.
Contact an authorised service centre.
Increase the pressure by screwing in the
pressure regulator knob.
Replace the nozzle.
Fluctuating
pressure.
The nozzle is either
clogged or deformed.
Suction/delivery valves are
clogged or worn out.
Worn gaskets
Pressure regulator valve
gaskets worn
The filter is dirty.
Dismantle the lance and clean the nozzle with
the pin provided.
Contact an authorised service centre.
Contact an authorised service centre.
Contact an authorised service centre.
Remove and clean the filter.
Water leak
from ap-
pliance
Water leaking from the
pump.
Leaks from pressure
regulator valve
Leaks from water unions.
Contact an authorised service centre.
Tighten the unions; if the problem persists,
contact an authorised service centre.
Contact an authorised service centre.
Tighten the unions; if the problem persists,
contact an authorised service centre
Abnormal
noise
Suction/delivery valves are
clogged or worn out.
Worn bearings
The filter is dirty.
Extreme water temperature.
Contact an authorised service centre
Contact an authorised service centre
Remove and clean the filter.
Bring the temperature under 50°.
Water is in
the oil.
O-rings (water and oil) are
worn out.
Contact an authorised service centre
The machine
does not
suck
detergent.
Tank empty.
Rod knob on high pressure
position.
Water ter is clogged.
Replace oil with double frequency that is
suggested.
Fill the tank.
Remove and clean the filter (fig.1 pos. 10).
> TROUBLE SHOOTING
EN
18
