11
TROUBLESHOOTING
Problem
Possible causes
Remedy
Pump does not reach working
pressure
Nozzle worn
Replace nozzle
Water filter fouled
Clean filter (
L
) (fig.5)
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 releas-
ing 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 (
E
) on (+) setting (fig.3)
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.5)
Inlet filter (
L
) fouled
Clean filter (
L
) (fig.5)
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.2)
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 Authorised Service Centre
Appliance not used for a long period of time
Using the tool (
M
) unjam the motor through the hole at the
rear of the appliance (in models with this feature) (fig. 5)
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.5)
No detergent sucked in
Adjustable nozzle on high pressure setting
Set nozzle (
E
) on " " setting (fig.3)
Detergent too dense
Dilute with water
High pressure hose extension being used
Fit original hose
Deposits or restriction in detergent circuit
Flush with clean water and eliminate any restrictions. If the
problem persists, contact an Authorised Service Centre
Water escapes from thermo-
stat valve
Water temperature inside pump head has
exceeded max. rated value stated on nameplate
With appliance in operation, do not stop the water
jet for more than 5 minutes at a time
(*) 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
13
