Nilfisk-ALTO MC 4M Service Manual

E
Troubleshooting
SM MC 3C_ MC 4M Ver.1.0_March 2015
41
Fault Cause Remedy
When the cleaner is switched
on the motor buzzer without
starting.
 The main voltage is too low
or there is a phase failure
(3 phase model).
 The pump is blocked or
frozen.
 Incorrect cross-section or
length of the extension lead.
 Have the electrical
connections checked.
 Pump needs service
(see section ”F”).
 Use lead with correct cross
section and length.
The motor switches off.
 The overload protection has
been activated due to
overheating or overloading
of the motor.
 High pressure nozzle is
dirty.
 Check that the main voltage
and the cleaner voltage are
the same.
Switch off the cleaner and
allow it to cool down.
 Clean or change the high
pressure nozzle.
Cleaner starts / stops by itself.
 Leakage on high pressure
side.
 Locate the leak and repair
it.
No detergents drawn in.
 Injector in foam sprayer is
dirty or suction hose is
blocked.
 Detergent container empty.
 Clean.
 Top up/change the
container.

Nilfisk-ALTO MC 4M Specifications

General

Brand	Nilfisk-ALTO
Model	MC 4M
Category	Pressure Washer
Language	English