ENGLISH • 25
TROUBLE SHOOTING
PROBLEM POSSIBLE CAUSES SOLUTION
Pump does not reach working pressure
Nozzle worn Replace nozzle
Water lter fouled Clean filter (6) (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) on (+) 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
(6) fouled
Clean filter (6) (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 to 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 Authorized 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)
(Fig. E)
Water leakage
Seals worn
Have the seals replaced at your nearest
Authorized Service Centre
Safety valve tripped and discharging Contact an Authorized service Centre
Appliance noisy Water too hot Reduce temperature (See technical data)
Oil leakage Seals worn
Contact your nearest Authorized Service
Centre
TSS versions only: Motor starts even
with gun trigger is released
High pressure system or pump hydraulic
circuit not watertight
Contact your nearest Authorized Service
Centre
TSS versions only: No water delivery
when gun trigger is depressed
(With supply hose connected)
Nozzle clogged Clean nozzle (Fig. E)
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