5
Operating Instructions and Parts Manual
Gravity Feed Spray Gun
Right or left
heavy spray
pattern
Top or bot-
tom heavy
spray pat-
tern
Split spray
pattern
Center
heavy spray
pattern
Sputtering
spray
Fluid leaking from pack-
ing nut
Air leaking from air cap
without pulling trigger
Fluid leaking from fluid tip
of pressure feed spray gun
Excessive overspray
Will not spray
Troubleshooting Chart
Symptom Possible
Cause(s)
Corrective
Action
1.
Holes in left or right side of the air
cap are plugged
2.
Dirt on left or right side of fluid tip
1.
Dried material at top or bottom of
fluid tip
2.
Loose air cap or dirty seat
3. Air
cap
plugged
1.
Fan pattern open too far
2.
Fluid turned in too far
3.
Atomization air too high
1.
Fan adjustment partially closed
2. Material
too
thick
3.
Atomization pressure too low
1.
Material level too low
2.
Container tipped too far
3.
Loose fluid inlet connection
4.
Loose or damaged fluid tip/seat
5.
Dry or loose fluid needle packing nut
6. Air
vent
clogged
1. Packing
nut
loose
2.
Packing worn or dry
1.
Sticking air valve stem
2.
Contaminate on air valve or seat
3.
Worn or damaged air valve or seat
4.
Broken air valve spring
5. Bent
valve
stem
1.
Packing nut too tight
2.
Fluid tip worn or damaged
3.
Foreign matter on tip
4.
Fluid needle spring broken
1.
Too high atomization pressure
2.
Too far from work surface
3.
Improper stroking (arcing, gun
motion too fast)
1.
No pressure at gun
2.
Fluid control not open enough
3. Fluid
too
heavy
1.
Clean. Use only non-metallic point
2. Clean
1. Clean
2. Clean
and
tighten
3.
Clean. Use only non-metallic point
1.
Partially close the pattern adjustment
2. Increase
fluid
3.
Reduce atomization air pressure
1.
Open fan pattern adjustment
2.
Thin to proper viscosity
3. Increase
atomization
pressure
1. Refill
2. Hold
more
upright
3. Tighten
4. Adjust
or
replace
5.
Lubricate and or tighten
6. Clear
vent
hole
1.
Tighten, but do not restrict needle
2.
Replace or lubricate (non-silicone oil)
1. Lubricate
2. Clean
3. Replace
4. Replace
5. Replace
1. Adjust
2.
Replace tip and/or needle
3. Clean
4. Replace
1. Reduce
pressure
2.
Adjust to proper distance
3.
Move at moderate pace, parallel to surface
1. Check
air
lines
2. Open
fluid
control
3.
Thin fluid or change to pressure feed system
