Sears 919.15516 - Manual (Page 9)

TROUBLESHOOTING GUIDE (continued)
PROBLEM CAUSE CORRECTION
Fluid leakage from packing
retainer nut. Packing nut loose.
Packing worn or dry.
Tighten, but not so tight as to grip needle.
Replace packing or lubricate. See “Mainte­
nance.” See page 7.
Dripping from fluid tip. Dry packing.
Sluggish needle.
Tight packing nut.
Lubricate. See page 7.
Lubricate. See page 7.
Adjust. See page 5.
Runs and sags. Too much material for spray pace.
Material too thin.
Gun tilted on an angle.
Reduce pressure and readjust.
Remix or spray light coats.
Hold gun at right angle to work.
Excessive overspray. Too m u c h a t o m i z a t i o n a i r
pressure.
Gun too far from surface.
Improper stroking, i.e., arcing,
moving too fast.
Reduce.
Check distance. See “Hints for Good Spraying
Results” on page 6.
Move at moderate pace, parallel to work sur­
face. See “Hints for Good Spraying Results” on
page 6.
Excessive fog. Too much or quick drying thinner.
Too m u c h a t o m i z a t i o n a i r
pressure.
Remix.
Reduce.
Thin, sandy coarse finish
drying before it flows out. Gun too far from surface.
Too much air pressure.
Improper thinner.
Move gun closer to surface. See “Hints for
Good Spraying Results” on page 6.
Reduce pressure.
Follow paint manufacturer’s instructions.
T h i c k d i m p l e d f i n i s h
“orange peel.” Too much
material coarsely atomized. Gun too close to surface.
Air pressure too low.
Improper thinner.
Material not thoroughly mixed.
Surface rough, oily, dirty.
Move gun away from the surface. See “Hints for
Good Spraying Results” on page 6.
Increase air pressure or reduce fluid pressure.
Follow paint manufacturer’s instructions.
Mix thoroughly.
Properly clean and prepare surface.