Spray Pattern Troubleshooting - Graco WB3000 Instructions - Parts Manual

Spray Pattern Troubleshooting

NOTE: Some spray pattern problems are caused by the improper balance between air and fluid.
Problem
Fluttering or spitting spray.
Irregular pattern.
Pattern pushed to one side; air cap
gets dirty.
Tails in pattern.
Fluid buildup on air cap/tip guard.
3A2497C
Cause
No fluid.
Air in fluid supply.
Fluid buildup; partially plugged tip.
Worn/damaged tip or air cap holes.
Air cap holes plugged.
Air pressure too low.
Fluid pressure too low.
Air pressure too high.
Fluid pressure too low.
Air cap holes plugged.
Troubleshooting
Solution
Refill supply.
Check fluid source. Refill.
Clean. See
Clean the Gun Daily, page
Clean or replace.
Clean. See
Clean the Gun Daily, page
Open atomizing air adjustment valve.
Increase.
Decrease.
Increase.
Clean. See
Clean the Gun Daily, page
33.
33.
33.
43