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8
MAINTENANCE (FIG.5)/PAGE.6
Any maintenance operations not covered by this chapter should be
carried out by an Authorized sales and service Centre.
Caution - Danger!
Always disconnect the plug from the power socket
before carrying out any work on the appliance.
8.1 Cleaning the nozzle
1) Disconnect the lance from the nozzle.
2) remove any dirt deposits from the nozzle hole using the tool (C1).
8.2 Cleaning the filter
inspect the intake filter (L) and detergent filter (if fitted) before each
use, and clean in accordance with the instructions if necessary.
8.3 Unjamming the motor (on models with this feature)
in case of lengthy stoppages, limescale sediments may cause the
motor to seize. To unjam the motor, turn the drive shaft with a tool (M).
8.4 End-of-season storage
Treat the appliance with non-corrosive, non-toxic antifreeze before
storing it away for winter.
Put the appliance in a dry place, protected from frost.
9
TROUBLESHOOTING
Problem
Possible causes
Remedy
Pump does not reach working
pressure
Nozzle worn
replace nozzle
Water filter fouled
Clean filter (L) (fig.5)
Water supply pressure low
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
Turn the adjustable nozzle (E) (+) (fig.3)
Thermostatic valve tripped
Wait for correct water temperature to be restored
Pressure drops during use
Water intake from external tank
Connect appliance to the mains water supply
intake water too hot
reduce temperature
Nozzle clogged
Clean nozzle (fig.5)
intake filter (L) dirty
Clean filter (L) (fig.5)
motor “sounds” but fails to start
insufficient power supply
Check that the voltage of the mains power supply line is
the same as that on the plate (fig.2)
voltage loss due to use of extension cable
Check characteristics of extension cable
Appliance not used for a long period of time
Contact your nearest Authorized service Centre
Problems with Tss device
Contact your nearest Authorized 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 (M) unjam the motor from the hole at the
rear of the appliance (in models with this feature) (fig.5)
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 deliv-
ery when gun trigger is depressed
(with supply hose connected)
Nozzle clogged
Clean nozzle (fig.5)
No detergent taken in
Adjustable nozzle on high pressure setting
set nozzle 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 Authorized service Centre
(*) if the motor starts 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 Authorized service Centre.
