TROUBLESHOOTING CHART
PROBLEM
CAUSE
SOLUTION
Uneven spray pattern.
•
Fluid pressure too low.
•
Increase pressure to
pump, or adjust fluid
pressure regulator.
Tails or fingers in spray
pattern.
•
Fluid pressure too low.
•
Fluid too viscous, or
supply is low.
•
Tip orifice too small for
fluid.
•
Increase pressure to
pump, or adjust fluid
pressure regulator.
•
Decrease viscosity or
refill supply.
•
Change to a larger tip.
Gun will not stop spraying.
•
Fluid pressure too high.
•
Fluid needle binding.
•
Obstructed or worn needle
or seat.
•
Reduce pressure to
pump, or adjust fluid
pressure regulator.
•
Clean/repair needle.
•
Clean/replace needle.
Gun will not spray.
•
Pump not operating.
•
Fluid line clogged.
•
Fluid valve closed.
•
Clogged spray tip or needle
seat.
•
Worn or dry piston
packings.
•
Refer to separate pump
manual.
•
Clear fluid line.
•
Open fluid valve.
•
Clear spray tip and
needle.
•
Replace piston packings.
Distorted spray pattern.
•
Fluid pressure too low.
•
Clogged spray tip or
needle seat.
•
Fluid buildup on tip or
worn tip.
•
Increase pressure to
pump, or adjust fluid
pressure regulator.
•
Clean spray tip and
needle.
•
Clean or replace spray
tip.
1.
Relief air pressure before servicing or cleaning.
2.
The compressor should provide sufficient air pressure.
3.
Keep optimum air pressure with the air regulator.
4.
Put the gun on safety position when not using.
5.
Flush the pump and spray system for long term storage.
6.
Flush the tip and filter after working.
7.
Request a professional airless spraying personnel to repair this gun.
