16 AirCoat
GB
Troubleshooting
7.3
Spray Patterns
Problem
Cause
Solution
A. Tails
1. Inadequate fluid delivery
1. Fluid not atomizing correctly:
Increase fluid pressure. Change to smaller tip orifice
size. Reduce fluid viscosity. Reduce hose length.
Clean gun and filter(s). Reduce number of guns using
pump.
B. Hour glass
1. Inadequate fluid delivery
1. Same as above.
C. Distorted
1. Plugged or worn tip
1. Clean or replace tip.
D. Pattern expanding and
contracting (surge)
1. Suction leak
2. Pulsating fluid delivery
1. Inspect for suction hose leak.
2. Change to a smaller tip orifice size. Install pulsation
dampener in system or drain existing one. Reduce
number of guns using pump. Remove restrictions in
system; clean tip screen if filter is used.
E. Round pattern.
1. Worn tip
2. Fluid too heavy for tip
1. Replace tip.
2. Increase pressure. Thin material. Change nozzle 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.