Spray gun W 90
18
GB
Correction of Malfunctions
Malfunction
Cause
Correction
Spray gun
buzzes and
does not work
Piston stuck
Defective drive
Unscrew round spray nozzle, remove
valve, turn regulating screw far to the
left, spray through pistol briefly with
thinner
Send spray gun to customer service
centre
Spray gun
does not suck
in
No valve in the pump
Suction tube loose in the
conical bore
Venting hole in pump
housing clogged
Intake hole (fitting) in pump
housing clogged
Viscosity of spray material
too high
Insert valve
Adjust suction tube
Clean
Clean
Thin accordingly
Spray gun
sucks in but
does not
spray
Nozzle clogged
Ducts and holes in atomiser
clogged
Clean
Clean
Spray gun
works but
sprays
unevenly
Spray material in container
running out
Spray gun not held straight,
causing air to be sucked in
Viscosity of spray material
too high (too thick)
Fine adjustment button not
set correctly
Nozzle worn out
Valve worn out
Refill
Use flexible nozzle extension (See
Accessories)
Thin accordingly
Reset according to spray material
Replace
Replace