Craftsman 919.150020 - Manual (Page 8)

TROUBLESHOOTING GUIDE (Cont'd)
PROBLEM CAUSE CORRECTION
Dripping from fluid tip. Dry packing. Lubricate.
Sluggish needle. Lubricate.
Tight packing nut. Adjust.
Worn fluid tip or needle. Replace.
Runs and sags. Too much material for spray pace. Reduce pressure and readjust.
Material too thin. Remix or spray light coats.
Gun tilted on an angle. Hold gun at right angle to work.
Excessive overspray. Too much atomization air pres­
sure.
Gun too far from surface.
Reduce.
Check distance. See "Hints for Good Spraying
Techniques".
Improper stroking; i.e., arcing,
moving too fast. Move at moderate pace, parallel to work sur­
face. See "HintsforGoodSprayingTechniques".
Excessive fog. Too much or quick drying thinner. Remix.
Too much atomization air pres­
sure. Reduce.
Thin, sandy coarse finish
drying before it flows out. Gun too far from surface. Move gun closer to surface. See "Hints for Good
Spraying Techniques".
Too much air pressure. Reduce pressure.
Improper thinner. Follow paint manufacturer's instructions.
Thickdimpledfinish "orange
peel." Too much material
coarsely atomized.
Gun too close to surface.
Air pressure too low.
Move gun away from the surface. See "Hints for
Good Spraying Techniques".
Increase air pressure or reduce fluid pressure.
Improper thinner. Follow paint manufacturer's instructions.
Material not thoroughly mixed. Mix thoroughly.
Surface rough, oily, dirty. Properly clean and prepare surface.
Air will not shut off. Valve plunger in backwards. Adjust
Will not syphon. Air deflector on backwards. Adjust
Paint tip sleeve on backwards. Adjust
Cup attached to air fitting. Adjust
Air leak at trigger. Valve loose. Loosen valve housing nut, tighten valve all the
way.