TROUBLE CAUSE
REMEDY
Sags or Runs
Too much paint
Screw in paint control
Gun moved too slowly
Move gun faster
Paint to thin
Add unthinned paint to give correct time through
thinning
cup
Gun held at incorrect angle or too close
Hold gun at right angle to surface and at a distance of
15 to 20cm
Spray overlapped too much
Overlap spray about one third width of pattern
Dry Spray
Insufficient paint coming from the spray gun
Adjust paint control
Gun held too far from surface
Hold gun about 15 to 20cm surface or closer for
small
objects
Overspray from a preceding section when gun is not
Hold gun at right angles to surface
held at right angles to surface
Spray patterns not properly overlapped
Prepare surface carefully
Striped or Uneven Surface
Tilting the gun
Hold the gun at right angles to surface
Dirt or burrs on air cap or paint tip cause heavy top & bottom pattern
Clean or replace air cap or paint tip
Spray patterns not properly overlapped
Overlap by one third
Spitting or Spraying Lumps
Solid particles in paint
Strain paint
loose paint tube
Ensure paint tube is firmly pushed into place
Weak or No Spray
Low volume of paint from container due to blocked air
Clean passageway
passageway in spray gun body
(3mm hole between air inlet-port and container)
Paint not thinned enough
Add the appropriate solvent to the paint -
a small amount at a time
Lid washer missing
Replace lid washer
Top or Bottom-heavy Pattern or
Horn holes partially blocked
Determine whether obstruction is on air cap or paint
Heavy Right or Left Side Pattern
tip, by making test pattern, rotating cap half turn and
spraying again. If the defect is inverted, obstruction is
on air cap
Obstruction on paint tip or
Clean air cap with non metallic instrument. If
Dirt on air cap seat or paint tip seat
obstruction is on paint tip, check for fine burring which
can be removed with 600 wet or dry sandpaper, or for
dried paint inside opening (wash off)
Fluttering Spray
Lack of paint
Refill container
Blocked paint passages
Clean
Damaged paint nozzle or needle
Clean needle set or replace is neccessary
Paint Leaking from Gland Nut
Loose gland nut
Tighten
Worn gland washer
Replace
Pain Leaking from Front of Gun
Needle not seated correctly due to:
Worn or damaged paint nozzle
Replace
Dirt or dried paint in nozzle
Clean
Gland washer done up to tight, preventing needle
Loosen
from
seating
Broken
Spring
Replace
Scored or damaged needle
Replace
TROUBLESHOOTING
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