Lavorwash NPX XP - SUNDEK 5 - PWH 2.0 Manual Del Usuario página 27

EN
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
switch is on because of in-
sufficient mains voltage.
Repair
• Check the value of the
mains voltage.
• Contact an authorised
service centre.
Fault When the lance is turned
on pressure values de-
crease and increase
Cause
• The
clogged or deformed.
• Either boiler coil or lance
are clogged with lime-
stone.
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.
77000180-03 man NPX4 12l.indd 27
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motor-protecting
nozzle is either
Repair • Check the pressure in the
tank.
• Check and/or replace.
Fault The pump does not reach
the fixed pressures
Cause • The pump sucks air.
• The valves are worn out.
• The setting valve area is
worn out.
• The nozzle is unsuitable or
worn out.
• The seals are worn out.
Repair • Check the suction pipes.
• Check and/or replace.
• Contact an authorised
service centre.
• Contact an authorised
service centre.
Fault Irregular pressure fluctua-
tions
Cause • The suction and/or deliv-
ery valves are worn out.
• Presence of foreign mat-
ters in the valves, which
generate bad functioning.
• Air suction.
• The seals are worn out.
Repair • Check and/or replace.
• Check and clean the re-
place.
• Check the suction pipe.
• Check and/or replace the
seals.
Fault Pressure leakage
27
30-06-2010 16:36:51