
PowrCoat
15
GB
Troubleshooting
7. Troubleshooting
7.1
Spray Gun
Problem
Cause
Solution
A. Spitting gun
1. Air in system
2. Dirty gun
3. Needle assembly out of adjustment
4. Broken or chipped seat
1. Inspect connections for air leaks.
2. Disassemble and clean.
3. Inspect and adjust.
4. Inspect and replace.
B. Gun will not shut off
1. Worn or broken needle & seat
2. Needle assembly out of adjustment
3. Dirty gun
1. Replace.
2. Adjust.
3. Clean.
C. Gun does not spray
1. No paint
2. Plugged filter or tip
3. Broken needle in gun
1. Check fluid supply.
2. Clean.
3. Replace.
D. Insufficient material supply.
1. Material pressure set too low.
2. Blocked spray gun filter or pump high
pressure filter.
3. Tip is blocked.
4. Tip is too small.
1. Increase the material pressure at pump.
2. Clean or replace the gun filter and/or pump high
pressure filter.
3. Clean the tip.
4. Select a larger tip.
E. Poor spraying pattern.
1. Tip is too large.
2. Material pressure at the pump is set too
low.
3. Material viscosity is too high.
4. Worn tip.
1. Select a smaller tip.
2. Increase the material pressure at the pump.
3. Dilute the material according to the material
manufacturer’s instructions.
4. Replace with a new tip.
7.2
Air Motor
Problem
Cause
Solution
A. Motor stops at top or bottom
of stroke - air does not exhaust
when gun is open.
1. Piston rod is loose where it connects to the
fluid section.
2. Trip springs or valve spring broken.
3. Motor is frozen due to icing or lack of
lubrication.
1. Tighten connection.
2. Inspect and replace where neessary.
3. Check the Air-Care™ fluid level in the Automatic
Lubricator. If low, add Air-Care™ to reservoir.
If condition persists, check air supply for
contamination.
B. Motor stops, blows air from
exhaust when gun is open.
1. See above.
2. Air valve is in dead stall position.
3. O-rings were worn or damaged.
1. See above.
2. Remove one trip spring retainer, trip spring and ball.
Push spool valve up or down, lubricate, reassemble
and restart.
3. Install minor service kit and follow instructions in
Servicing section of manual.
If dust or dirt is found inside motor, check air supply for
contamination.