16 PowrCoat
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.
