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Trouble Shooting Guide and Application
Guide for
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| TROUBLE | POSSIBLE CAUSE | SUGGESTED CORRECTION |
| Sagging | 1. Too high pot pressure Too low atomizing pressure 2. Gun too close to surface 3. Spray motion stopped before releasing |
1. Lower pot pressure Raise atomizing pressure Maintain 5-10# differential 2. Hold gun about 18-24 inches from surface 3. Continue spray motion after trigger release |
| Merging Particles | 1. Too high
atomizing pressure 2. Blocked nozzle 3. Material too heavily bodied |
1. Lower atomizing
pressure below pot pressure by 5-10# 2. Remove and clean nozzle 3. Add 5% water and "box" material |
| Spray Gun Clogging | 1. Gun dirty 2. Material too coarse for tip |
1. Clean gun 2. Strain material thru coarse
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| Elongated Particles | 1. Arching
wrist motion 2. Material too cold 3. Air pressure too high |
1. Move gun
parallel with surface at a distance of 18-24 inches 2. Warm material to 70`F 3. Lower pressure |
| Streaks | 1. Excessive
"triggering" of the spray gun 2.
Insufficient of improper |
1.
Retain trigger pressure throughout stroke 2. Use cross strokes |
| No Paint from Pressure Tank | 1. Insufficient air
pressure from compressor 2.
Leaking pressure tank cover 3. Clogged Lines |
1.
Check compressor pressure 2. Replace gasket 3. Lubricate for use |
| Paint Leaks from Spray Gun | 1. Damaged fluid tip or
needle 2. Dried particle blocks fluid tip 3. Packing for fluid needle dry |
1. Replace tip and
needle 2. Remove tip and clean with mineral spirits 3. Lubricate for use |
| Pattern too small compared to standard | 1. Over
atomization (too much air) 2. Clog
in fluid nozzle restricting |
1. Decrease air or
increase fluid pressure 2.
Shut down system. Remove |
| Pattern too large compared to standard | 1. Under atomization (too little air) | 1.
Increase air or decrease fluid pressure |
| Pinholing or insufficient coverage | 1. Moving gun
too fast 2. Too little air |
1.
Slow down 2. Increase Air |
| Cobwebbing or stringy | 1. Material
cold 2. Pressure too high |
1.
Warm material 70'F 2. Lower pressure |
| Primer showing through on coarse texture | 1. Large
particles require more film buildup |
1. Use
base coat/pattern coat spray technique |
| Gelled particles or paint | 1. Paint has
probably been subjected to high temperature exceeding 100°F 2. Paint
has probably been subjected |
1. Material is
probably not usable 2. Warm
material to 80'F to see if gel |
| Color Drift/Pattern change while spraying | 1. Pressure
changed while spraying 2. Not properly mixed causes phase separation 3. Changed lot numbers |
1.
Adjust pressure 2. Mix properly by boxing 3. There are variations from batch
to batch. Complete wall or total surface with same batch |
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