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with subsequent changes every 500 hours. SAE
20/30 , 15W-40, 20W-40 oil is recommended .
CHECKING THE WATER INTAKE FILTER
Inspect and clean the water intake filter on the inta-
ke union periodically. This is important to prevent
fouling which may impair operation of the pump.
CLEANING THE FUEL FILTER
Check the fuel filter periodically and replace if it has
deteriorated or is excessively dirty.
(fig.
H
) DESCALING
The descaling procedure must be carried out periodically
with specific products. The interval depends on the hard-
ness of the water. Pour one litre of product for every 15
litres of water into a drum containing at least 30 litres of
water. Disconnect the gun from the high pressure line and
place its free end in the drum, in order to form a closed cir-
cuit, and draw the solution into the machine for at least 10
minutes. The delivery end of the line should discharge into
a canvas or mesh bag so that the scale removed is not re-
turned to the circuit. Then restore the normal connection
and rinse with plenty of cold water. This operation should
be carried out by our after-sales service, since the descal-
ing product may cause wear of components. Comply with
the regulations in force when disposing of the descaling
agent.
BOILER CLEANING
•
WARNING: For all maintenance of the boiler, of the
high pressure pump and of the machine, it is necessary
to address to qualified personnel or to an authorized
assistance center.
The boiler cleaning must be periodically executed every
180 ÷ 200 hours of working proceeding as follows:
- Carefully remove the nozzle holder flange and
the electrodes holder (boiler head).
- Clean with compressed air the nozzle filter and
check the electrodes position.
- Remove the boiler cap, clean the deflector.
- Manually take away the interior cap.
- Unscrewing the locking nuts and take the
boiler coil out.
- Clean the coil by an iron brush.
- Suck the residuums from the boiler.
- Replace every parts doing the operations in the
inverse way.
•
WARNING: The general checking and combustion
regulation must be periodically executed by specialized
personnel as prescribed by the law.
ELECTRIC DIAGRAM
See illustrations, page 7-8.
WATER DIAGRAM
See illustrations, page 7-8.
TROUBLESHOOTING
Before doing any work on the machine, disconnect
the electricity and water supplies and discharge the
pressure. Proceed systematically to identify Faults
following the chart below; if you are still unable to
eliminate the problem, call in the Authorized After-
Sales Service.
Fault
When the main switch is turned on the
machine does not start
Cause
• Plug not properly connected.
• Connection panel fuses are burnt out.
Repair
• Carefully check the plug and the electric
cable.
• Check them and replace them.
Fault
The motor hums but does not start
Cause
• A phase is missing (in three phase
models).
• Lows voltage.
• High pressure pump is blocked.
Repair
• Contact an authorised service centre.
• Contact an authorised service centre.
• Contact an authorised service centre.
Fault
The motor stops suddenly or after a
while
Cause • The motor-protecting switch is on beCause
of insufficient mains voltage.
Repair • Check the value of the mains voltage.
• Contact an authorised service centre.
Fault
When the lance is turned on pressure
values decrease and increase
Cause • The nozzle is either clogged or deformed.
• Either boiler coil or lance are clogged with
limestone.
Repair • Either clean it or replace it.
• Descaling.
Fault
To much vibrations at the delivery
Cause • The pressure tank is run down.
• The valve are worn out or dirty.
EN
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