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9
PROBLEM
CAUSE
CORRECTION
Gun Produces
an Uneven
Spray Pattern
or Fan
Paint or film
buildup on Air
Cap blocking
air holes
Disconnect air supply and clean buildup from
Air Cap.
Gun “Spits” or
Sputters; Dis-
charges Large
Droplets
Paint or film
buildup on
Needle &
Nozzle
Disconnect air supply and clean buildup from
Needle & Nozzle.
NOTE:
Use of solvent may be
helpful, removal of the Nozzle may be necessary.
Gun Dispenses
Only a Small
Amount of
Paint or None
at All
Clump or piece
of paint film
blocking paint
inlet port
Disconnect air supply; remove paint cup, remove
blockage from paint inlet area then strain paint
or coating to remove clumps or film.
Heavy
Textured or
“Orange Peel”
Paint Appear-
ance
Paint Gun is
too close to
surface
Keep within 8” to 12”.
Inlet air pres-
sure too low
Increase inlet air pressure and or decrease
fluid flow.
Incorrect thin-
ner/reducer
Check paint manufacturer’s reducing/thinning
instructions.
Incorrect mate-
rial mix ratios
Check paint manufacturer’s mix ratio instructions.
Excessive
Runs and Sags
Paint Gun
being moved
too slowly over
surface
Speed up gun motion over surface.
Excessive fluid
flow
Decrease fluid flow by adjusting “fluid” knob.
Paint mixed too
thin
Check paint manufacturer’s reducing/thinning
instructions.
TROUBLESHOOTING