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IMPORTANT: Before doing any work on the
cleaner,discharge the pressure and disconnect
the electricity and water supplies.
CHECKING THE PUMP OIL LEVEL
Check the oil level periodically. The oil must be
changed for the first time after 50 working hours, with
subsequent changes every 500 hours. SAE 20/30
oil is recommended - Oil capacity 0,15 Kg
CHECKING THE WATER INTAKE FILTER
Inspect and clean the water intake filter (ref. 1, pos.
1) on the intake union periodically. This is important
to prevent fouling which may impair operation of the
pump.
REPLACING THE SPRAY ROD NOZZLE
Replace the nozzle when the pressure drops below the normal values.
ELECTRIC MOTOR
If the motor malfunctions, it cuts out. Wait 5-10
minutes before restarting. If the problem persists,
refer to the “TROUBLESHOOTING” section. If you
are still unable to eliminate the problem, stop using
the machine and contact an Authorized Service Centre.
ELECTRICAL CORD
Take care not to damage the electrical cord. If it is
damaged, replace it with a special approved type
H07RNF cord, following the electrical system diagram.
The replacement must only be made by
professionally qualified staff.
CLEANING THE FUEL FILTER
Check the fuel filter (ref. 12) periodically and replace
if it has deteriorated or is excessively dirty.
DESCALING
The descaling procedure must be carried out
periodically with specific products. The interval
depends on the hardness 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 circuit, 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
returned 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 descaling product
may cause wear of components. Comply with the regulations in force when disposing of the
descaling agent.
26
MAINTENANCE
ref. 12
ref. 13
ref. 11
A
2
1
Summary of Contents for NPX4
Page 3: ...3 AVVERTENZE SAFETY PRECAUTIONS AVERTISSEMENTS WARNHINWEISE ADVERTENCIAS WAARSCHUWINGEN...
Page 13: ...13 SCHEMA ELETTRICO...
Page 27: ...27 ELECTRIC DIAGRAM...
Page 41: ...41 SCHEMA LECTRIQUE...
Page 55: ...55 ELEKTROSCHEMA...
Page 69: ...69 ESQUEMA EL CTRICO...
Page 83: ...83 ELEKTRICITEITSSCHEMA...