Nilfisk-ALTO POSEIDON 7-52 Operating Instructions Manual page 19

Fault
When the cleaner is switched
on the motor buzzes without
starting
The motor switches off
When a cleaning agent injector
(optional accessory) is used,
cleaning agent is not supplied
40
Cause
> The mains voltage is too low
or there is a phase failure.
> The pump is blocked or
frozen
> Incorrect cross-section or
length of the extension lead
> The switch is in position
'M' and the cleaner has not
been used for more than 5
minutes
> The overload protection has
been activated due to over-
heating or overloading of the
motor
> High-pressure nozzle is dirty
> Injector is dirty or suction
hose is blocked
> Cleaning agent tank is em-
pty
> The twist grip on the spray
pipe is not set to low pressu-
re
Remedy
• Have the electrical connec-
tion checked
• Contact the Alto customer
service
• Use lead with correct cross-
section or length
• Operate the main switch
again
• Check that the mains volt-
age and the cleaner voltage
are the same. Switch off the
cleaner and allow it to cool
for at least 3 minutes
• Change the high-pressure
nozzle
• Clean
• Fill the cleaning agent tank
• Turn the twist grip on the
spray pipe anti-clockwise as
far as possible