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TROUBLESHOOTING
EN
Problem
Pump does not reach working
pressure
Pump pressure drops during
suddenly use
Motor "buzzes" but fails to start
Motor fails to start
Water leakages
Appliance noisy
Oil leakages
Appliance starts even with gun
trigger released
No water delivery when gun trig-
ger is depressed (with supply hose
connected)
No detergent sucked in
(*) If the motor stops and does not restart during operation, wait 2-3 minutes before repeating the start-up procedure (Overload cutout has been tripped).
If the problem recurs more than once, contact your nearest Authorised Service Centre.
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
Power supply voltage too low
Voltage drop due to use of extension cable
Appliance not used for a long period of time
Problems with TSS device
No electrical power
Problems with TSS device
Seals worn
Safety valve tripped and discharging
Water too hot
Seals worn
High pressure system or pump circuit not watertight
Nozzle clogged
Adjustable nozzle on high pressure setting
Detergent too dense
High pressure hose extension being used
Deposits or restriction in detergent circuit
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)
Check that the voltage of the mains power supply line is
the same as that on the plate (fig.2)
Check characteristics of extension cable
Contact your nearest Authorised Service Centre
Contact your nearest Authorised Service Centre
Check that the plug is firmly in the socket and that the
mains voltage supply is present (*)
Contact your nearest Authorised Service Centre
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
Contact your nearest Authorised Service Centre
Clean nozzle (fig.5)
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
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