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TROUBLESHOOTING
EN
Problem
Pump does not reach working
pressure
Pump pressure drops during
suddenly use
Water leakages
Appliance noisy
Oil leakages
No detergent sucked in
Water escapes from thermo-
stat valve
MODEL
SERIAL NUMBER
Possible causes
Nozzle worn
Water filter fouled
Insufficient water supply
Air being sucked into system
Air in pump
Adjustable nozzle not positioned correctly
Thermostatic valve tripped
Water being sucked from an open container from a
height of more than 0.5 m.
Water being sucked from an external tank
Inlet water too hot
Nozzle clogged
Inlet filter (L) fouled
Seals worn
Safety valve tripped and discharging
Water too hot
Seals worn
Adjustable nozzle on high pressure setting
Detergent too dense
High pressure hose extension being used
Deposits or restriction in detergent circuit
Water temperature inside pump head has
exceeded max. rated value stated on nameplate
Remedy
Replace nozzle
Clean filter (L) (fig.5)
Turn on water supply tap fully
Check tightness of hose fittings
Switch off the appliance and keep depressing and releas-
ing the gun trigger until the water comes out in a steady
flow. Switch the appliance back on again.
Set nozzle (E) on (+) setting (fig.3)
Wait for correct water temperature to be restored
Reduce the suction height.
Connect appliance to the mains water supply
Reduce temperature
Clean nozzle (fig.5)
Clean filter (L) (fig.5)
Have the seals replaced at your nearest Authorised
Service Centre
Contact an Authorised Service Centre
Reduce temperature (see technical data)
Contact your nearest Authorised Service Centre
Set nozzle (E) on "
" setting (fig.3)
Dilute with water
Fit original hose
Flush with clean water and eliminate any restrictions. If the
problem persists, contact an Authorised Service Centre
With appliance in operation, do not stop the water
jet for more than 5 minutes at a time
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