10
Trouble Shooting and Correction
Symptom Cause Recommended action
Machine refuses to start Machine not plugged in Plug in machine.
Defective socket Try another socket.
Fuse has blown Replace fuse. Switch off other machines.
Defective extension cable Try without the ex ten sion cable.
Fluctuating pressure Pump sucking air Check that hoses and connections are
air tight.
Valves dirty, worn out Clean and replace or refer to local ALTO
or stuck distributor.
Pump seals worn out Clean and replace or refer to local ALTO
distributor.
Motor buzzes Low voltage or Activate the trigger of the spray handle.
low temperature
Machine stops Fuse has blown Replace fuse. Switch off other machines.
Incorrect mains voltage Check that the mains voltage corre-
sponds to specifi cation on the model tag.
Thermal sensor activated Leave the washer for 5 minutes to cool
down.
Nozzle partially blocked Clean the nozzle.
Fuse blows Fuse too small Change to an installation higher than the
amp. consumption of the ma chine.
You may try without the extension cable.
Machine pulsating Air in inlet hose/pump Allow machine to run with open trigger
until regular working pressure resumes.
Inadequate supply of Check that the water supply corresponds
mains water to specifi cations required (see model
tag).
NB! Avoid using long, thin hoses (min.
1/2")
Nozzle partially blocked Clean the nozzle.
Water fi lter blocked Clean the fi lter.
Hose kinked Straighten out hose.
Machine often starts Pump/spray handle is Contact your nearest ALTO Service
and stops by itself leaking Centre.
Machine starts, but Pump/hoses or accessory Wait for pump/hoses or accessory to
no water comes out frozen thaw.
No water supply Connect inlet water.
Water fi lter blocked Clean the fi lter.
Nozzle blocked Clean the nozzle.
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