Nilfisk-Advance 107146750, Service Manual

Page: 35 / 57

Troubleshooting
SM_MC_6P Ver.2.0_2021 35
E
Fault Cause Remedy
Pressure drop
-
Air in the system.
-
High pressure nozzle
blocked / worn.
-
Pressure control on the
spray lance is not set
correctly.
-
Detergent container empty.
-
Water inlet temperature
too high.
• Vent the system by
operating the spray gun
several times at short
intervals .If necessarly
operate the cleaner for a
short time without the
High pressure hose
connected.
• Clean / replace the high
pressure nozzle.
• Set the required working
pressure.
• Change container or close
detergent valve.
• See technical data part ” B ”.
Pressure
fluctuations
-
Lack of water
-
Water inlet hose is too long
or its cross
-
section too
small.
-
Lack of water caused by
blocked water filter.
-
Lack of water because
max. permissible suction
height has not been
heeded.
-
Pump sucks in air
(suction mode)
• Open water tap.
• Use specified water inlet
hose(Refer to user manual).
• Clean the water filter in the
water connection.
(Never work without water
filter).
• See technical data part ” B ”
• Check that the suction set
is air tight.
The motor does not start when
the cleaner is switced on.
-
The plug is not inserted
properly, i.e. there is no
current.
-
The main fuse is switced off.
• Check the plug, lead and
switch.If necessary have them
replaced by a trained
electrician.
• Switch on the main fuse.
General failures