GB
56
TROUBLESHOOTING
TROUBLESHOOTING CHART
PROBLEM
POSSIBLE CAUSE
ACTION
The motor does
not start, or
suddenly stops
Low oil level
ð
Fill up with oil�
The engine switch is not in the
ON position�
ð
Set the engine switch to ON�
Pressure is too high in the
hose�
ð
Keep the trigger pressed when starting�
The engine is
overloaded
The nozzle is partially blocked�
ð
Clean the nozzle�
Pressure is too high�
ð
Shorten the spiral spring on the check valve�
The pressure
rises when the
spray gun is
turned off
The circulation valve is
blocked�
ð
Clean the circulation valve�
The engine is
working, but
the pressure
is irregular or
very low
The water cock is closed�
ð
Open the water cock�
Build up of ice in the machine�
ð
Allow the ice to melt in all the parts of the machine�
The water supply is inade-
quate�
ð
The water connection must provide at least 15 l/min
at 1�4 bar�
The water inlet filter is
blocked�
ð
Clean the filter�
The delivery hose is kinked�
ð
Straighten out the hose�
The nozzle is worn or dama-
ged�
ð
Replace the nozzle�
Air in the pump�
ð
Press the trigger and wait until the water jet flows
smoothly�
The pressure regulator is not
set to max�
ð
Set the regulator to max�
The intake or outlet valve is
blocked or worn�
ð
Clean or replace the valves�
The circulation valve is not
working properly�
ð
Clean the circulation valve�