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11
PROBLEM
CAUSE
CORRECTION
“Dry” Material
Appearance
Gun is too far
from surface
Keep within 8” to 12”.
Material Gun
being moved
too fast over
surface
Slow down gun motion over surface.
Inlet air pres-
sure too high
Decrease gun inlet air pressure and or increase
Material flow setting.
Incorrect thin-
ner/reducer
Check Material manufacturer’s reducing/thinning
instructions.
Thin Material
Appearance
Material Gun
is too far from
surface
Keep within 8” to 12”.
Material Gun
being moved
too fast over
surface
Slow down gun motion over surface.
Inlet air pres-
sure too high
Decrease gun inlet air pressure and or increase
Material flow setting.
Incorrect thin-
ner/reducer
Check Material manufacturer’s reducing/thinning
instructions.
Spray is Sput-
tering
Gun being
tipped too far
down or up
Operate gun with Nozzle tilted no more than
45º down or up.
Nozzle or Wand
loose
Tighten Nozzle or Wand.
Gun internal
passages are
contaminated
Clean gun with suitable solvent.
Gun “Spurts”
at Initial Trig-
ger Pull Then
Evens Out
Air regulator
set too far back
in line causing
pressure build
up in air line
Customer supplied air regulator must be attached
at or closer to air inlet of gun.
TROUBLESHOOTING