18
9
TROUBLESHOOTING
Problem
Possible causes
Remedy
Pump does not reach working
pressure
Nozzle worn
replace nozzle
Water filter fouled
Clean filter (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)
Pressure drops during use
Water intake from external tank
Connect appliance to the mains water supply
inlet filter dirty
Clean the inlet filter
intake water too hot
reduce temperature
Nozzle clogged
Clean nozzle (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
use the tool (
L
) to 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
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 if gun trigger is released
Nozzle clogged
Clean nozzle (Fig.5)
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)
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.
ENGLISH
