MAINTENANCE & TROUBLESHOOTING PAGE 3
MAINTENANCE & TROUBLESHOOTING PAGE 3
SPRAY FAULTS
Condition Cause Correction
Split spray pattern Not enough material or too high
atomisation pressure
Reduce air pressure or increase fluid flow
by turning fluid needle adjusting screw
counterclockwise or increase fluid
pressure on pressure feed container.
Excessive bounce-back Too much atomisation air pressure
Gun too far from surface
Improper technique i.e. arcing, & fanning
the gun
Reduce air pressure
Check distance (normally 6-8”)
Move at moderate pace, parallel to work
surface
FINISH FAULTS
Runs and sags Too much material flow
Material too thin
Gun tilted on an angle
Adjust gun or reduce fluid pressure
Mix properly or apply light coats
Hold gun at right angle to work and adapt
to proper gun technique
Thin, sandy coarse finish drying before it
flows out.
Gun too far from surface
Too much air pressure
Improper thinner being used
Check distance (normally 6-8”)
Reduce air pressure and check spray
pattern
Follow paint manufacturers mixing
instructions
Thick dimpled finish “orange peel”. Too
much material coarsely atomised.
Gun too close to surface
Air pressure too low
Improper thinner being used
Material not properly mixed
Surface rough, oily, dirty
Check distance (normally 6-8”)
Increase air pressure or reduce fluid
pressure
Follow paint manufacturers mixing
instructions
Follow paint manufacturers mixing
instructions
Properly clean and prepare
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