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MALFUNCTION
The unit sucks in
but doesn't reach
the necessary
pressure (it does not
stop when the gun
is closed)
The product hose
vibrates abnormally
The unit sucks
in and builds up
pressure when the
valve is closed, but
it decreases too
much when the
trigger is pulled
Abnormal spray
pattern ("Horns"
and streaks)
NOTE: The symbol (*) means that before starting the procedure it is necessary to release pressure (see
paragraph 10.1)
CAUSE
The purge valve is open or
faulty
The Piston Valve is dirty or
damaged (It doesn't stop
when travelling up nor when
travelling down)
The Filter is dirty or the suc-
tion probe is damaged.
The Piston Valve is dirty or
faulty
There are pockets of air in the
Piston
The bottom Gasket of the
Piston valve is faulty
The suction Probe and/or the
suction Probe are loose, dirty
or damaged
The suction Probe and/or the
suction Probe are loose, dirty
or damaged.
Suction valve is damaged.
The Gun has no Aircap
The anti-pulsation Filter is
blocked
The aircap is worn
The product is too thick
The pump Pressure is low
The product Filter is blocked
The Aircap is damaged
The anti-pulsation Filter is
blocked
The suction Probe and/or the
suction Probe are loose, dirty
or damaged
ENGLISH
REPAIR
Close it or replace (*)
Replace or clean. (*)
Replace or clean. (*)
Adjust the pressure Regulator
(Maximum-Minimum) to
eliminate the pockets of air
Replace or clean. (*)
Replace (*)
Tighten and/or clean the
Probe and Filter, or
replace elements
Replace (*)
Assemble the aircap
Replace or clean. (*)
Replace or clean. (*)
Reduce its thickness
Increase the pressure by
adjusting the pressure
Regulator
Replace or clean. (*)
Replace (*)
Replace or clean. (*)
Tighten and/or clean the
Probe and Filter, or
replace elements