ENGLISH • 25
Problem
Possible Causes
Solution
Pump does not reach
working pressure
Nozzle worn
Replace nozzle
Water filter fouled
Clean filter (7) (Fig. E)
Insufficient water supply
Turn on water supply tap fully
Air being sucked into system
Check tightness of hose fittings
Air in pump
Switch off the appliance and keep depressing
and releasing the gun trigger until the water
comes out in a steady flow. Switch the appliance
back on again.
Adjustable nozzle not positioned correctly
Set nozzle (2) (+) setting (Fig. C)
Thermostatic valve tripped
Wait for correct water temperature to be
restored
Water being sucked from an open
container from a height of more than
0,5 m.
Reduce the suction height.
Pump pressure drops during
suddenly use
Water being sucked from an external tank
Connect appliance to the mains water supply
Inlet water too hot
Reduce temperature
Nozzle clogged
Clean nozzle (Fig. E)
Inlet filter (7) fouled
Clean filter (7) (Fig. E)
Motor “buzzes” but fails to
start
Power supply voltage too low
Check that the voltage of the mains power supply
line is the same as that on the plate (Fig. B)
Voltage drop due use of extension cable
Check characteristics of extension cable
Appliance not used for a long period
of time
Contact your nearest Authorised Service Centre
Problems with TSS device
Contact your nearest Authorised Service Centre
Motor fails to start
No electrical power
Check that the plug is firmly in the socket and
that the mains voltage supply is present (*)
Problems with TSS device
Contact your nearest Authorised Service
Centre
Appliance not used for a long period
of time
Using the tool unjam the motor through the hole
at the rear of the appliance (in models with this
feature)
Water leakages
Seals worn
Have the seals replaced at your nearest
Authorised Service Centre
Safety valve tripped and discharging
Contact an Authorised Service Centre
Appliance noisy
Water too hot
Reduce temperature (see technical data)
Oil leakages
Seals worn
Contact your nearest Authorised Service
Centre
TSS versions only: appliance
starts even with gun trigger
released
High pressure system or pump circuit
not watertight
Contact your nearest Authorised Service
Centre
TSS versions only: no water
delivery when gun trigger is
depressed (with supply hose
connected)
Nozzle clogged
Clean nozzle (Fig. E)
