DeVilbiss FLG4 - Page 6

Page 6 SB-2-775-A
ENGLISH
TROUBLESHOOTING (Continued)
CONDITION CAUSE CORRECTION
Fluid leaking or dripping from
front of gun
Packing nut too tight.
Dry packing.
Fluid tip or needle worn or damaged.
Foreign matter in tip.
Fluid needle spring broken.
Wrong size needle or tip.
Adjust.
Lubricate.
Replace tip and needle.
Clean.
Replace.
Replace.
Fluid dripping or leaking from
bottom of cup
Cup loose on gun.
Cup gasket worn or missing below cup.
Cup threads dirty.
Tighten.
Replace cup gasket.
Clean.
Runs and sags
Too much material flow.
Material too thin.
Gun tilted on an angle, or gun motion too
slow.
Adjust gun or reduce fluid flow.
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 approximately 8".
Reduce air pressure and check spray pattern.
Follow paint manufacturer's mixing instructions.
Thick, dimpled finish "orange
peel"
Gun too close to surface.
Too much material coarsely atomized.
Air pressure too low.
Improper thinner being used.
Material not properly mixed.
Surface rough, oily, dirty.
Check distance. Normally approximately 8".
Follow paint manufacturer's mixing instructions.
Increase air pressure or reduce fluid flow.
Follow paint manufacturer's mixing instructions.
Follow paint manufacturer's mixing instructions.
Properly clean and prepare.