Nilfisk-ALTO 03KLU User Manual page 18

12.0 Diagnosis of faults and repair
Fault
The motor fails to start
Working pressure too high
Working pressure too low
Irregular working pressure
During self-priming
During direct water
connection
No working pressure
Should faults occur other than those mentioned above, please contact the nearest Nilfi sk-ALTO service
or gan i za tion.
16
Cause
Oil supply not connected
Oil supply closed
No oil pressure
The pump is frozen
Nozzle partly blocked
Valve for regulation of water
capacity is not adjusted to max. of water. Turn in the direction
pressure
Regulating valve open
Air in the pump
Suction height too high or water Read the paragraph conc. self-
too hot
Filter blocked
Insuffi cient water supply from
the water works
Nozzle blocked
No water
High pressure hose/lance frozen Allow the high pressure hose/lance
By-pass valve frozen
Repair
Connect the oil hose
Open the valve
Start the hydraulic pump
Let the pump thaw
Clean the nozzle
Open fully the valve for regulation
indicated by the arrow
Close the regulating valve
Repeat the venting procedure
priming p. 6
Clean the fi lter. See p. 11
Change to a water supply with
greater output. If this is not
possible; turn the valve for regulation of
the water capacity in the opposite
direction of that indicated by the
arrow, until the machine works smooth ly.
Clean the nozzle
Check the water connection
to thaw
Allow the machine to thaw
EN