Trouble Shooting Plextone

 

Trouble Shooting Guide and Application Guide for 
Plextone® Multi-Color Finishes

TROUBLE POSSIBLE CAUSE SUGGESTED CORRECTION
Sagging 1. Too high pot pressure
Too low atomizing pressure
2. Gun too close to surface3. Spray motion stopped before releasing

4. Excessive thinning

1.  Lower pot pressure
Raise atomizing pressure
Maintain 5-10# differential
2.  Hold gun about 18-24 inches from surface3.  Continue spray motion after trigger release

4.  Add unthinned paint

Merging Particles 1. Too high atomizing pressure2. Blocked nozzle

3. Material too heavily bodied

1.  Lower atomizing pressure
below pot pressure by 5-10#
2.  Remove and clean nozzle3.  Add 5% water and “box” material
Spray Gun Clogging 1. Gun dirty2. Material too coarse for tip 1.  Clean gun2.  Strain material thru coarse
strainer by gravity only
Elongated Particles 1. Arching wrist motion2. 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`F3.  Lower pressure
Streaks 1. Excessive “triggering” of
the spray gun
2. Insufficient of improper
overlapping of strokes
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
gasket
3. Clogged Lines
1.  Check compressor pressure2.  Replace gasket

3.  Lubricate for use

Paint Leaks from Spray Gun 1. Damaged fluid tip or needle2. Dried particle blocks fluid tip

3. Packing for fluid needle dry

1.   Replace tip and needle2.  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
material
1.   Decrease air or increase fluid
pressure
2.  Shut down system. Remove
fluid nozzle and clean
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 fast2. Too little air 1.   Slow down2.   Increase Air
Cobwebbing or stringy 1. Material cold2. Pressure too high 1.   Warm material 70’F2.   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
to freezing temperature
1.   Material is probably not usable2.  Warm material to 80’F to see if gel
disappears. If not material is not
usable
Color Drift/Pattern change while spraying

1. Pressure changed while spraying

2. Not properly mixed causes phase separation

3. Changed lot numbers

1.  Adjust pressure2.  Mix  properly by boxing

3.  There are variations from batch to batch. Complete wall or total surface with same batch