5 Cause of faults
Before starting maintenance or repair work, ensure that all air operated tools are disconnected from the
air supply!
•
If drops form on the trigger
the needle gasket (10.1) is worn respectively loose and must slightly be retightened. For that
purpose remove needle/valve cartridge (see chapter “4.3”). Then unscrew screw (12.2) and take
out needle driver (12.1). Using a small screw driver turn stuffing box (11.1) gently clockwise and
try if needle is sliding smoothly again within the tightening gasket.
•
If drops form on the nozzle,
either needle or nozzle is worn and should be replaced. Or needle is not closed properly f.i.
because of particle residues within nozzle. Cleaning the needle/valve cartridge with solvent (see
chapter “4.3”).
•
If there is an uneven and not steady spray jet
make sure that nozzle is screwed in tight. Other reason could also be dirt residue within air cap.
Cleaning air cap with solvent.
•
Air blowing constantly
Although trigger released. O-Ring (13.1) and/or washer (14.1) worn and to be exchanged. Or
needle nuts are not counter-screwed in correct position (see chapter “4.3”).
Summary of Contents for FINE-SPRAY W 3/FZ-Duo
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