Campbell Hausfeld AL2810 Troubleshooting Chart

Operating Instructions and Parts Manual

AL2810

Airless Paint Systems

Troubleshooting Chart

Symptom	Possible Cause(s)		Corrective Action
Coarse spray	Low pressure		Increase the pressure

Excessive fogging	1.	High pressure	1.	Reduce pressure to satisfactory pattern distribution.
(overspray)	2.	Material too thin	2.	Use less thinner.

Pattern too wide	Spray angle too large		Use smaller spray angle tip.

Pattern too narrow	Spray angle too small		Use larger spray angle tip (if coverage is OK, try tip in same
			nozzle group).

Too much material	1.	Nozzle too small
	2.	Material too thin
	3.	Pressure too high

1.Use next smaller nozzle.

2.Thicken spray material.

3.Reduce pressure.

Too little material	1.	Nozzle too small	1.	Use next larger nozzle.
	2.	Material too thick	2.	Thin spray material.

Thin distrubtion in center	1.	Worn tip	1.	Change for new tip.
of pattern “horns”	1.	Wrong tip	2.	Use nozzle with narrow spray angle.

Thick skin on work	1.	Material too viscous	1.	Thin cautiously.
	2.	Application too heavy	2. Reduce pressure and/or use tip in next larger nozzle group.

Coating fails to close and	Material too viscous		Thin cautiously.
smooth over

Spray pattern irregular,	1.	Orifice clogged.	1.	Clean carefully.
deflected	2.	Tip damaged.	2.	Replace with new tip.

Craters or pock marks,	Solvent balance		Use 1 to 3% “short” solvents remainder “long” solvents.
bubbles on work			(This is most likely to happen with material of low viscosity,
			lacquers, etc.)

Clogged screens	1.	Extraneous material in paint.
	2.	Coarse pigments.
	3.	Poorly milled pigments (paint
	pigments glocculate) cover
	screen. Incompatible paint
	mixture and thinners.

1.Clean screen

2.Use coarse screen if orifice size allows.

3.Use coarser screen, larger orifice tips. Obtain ball milled paint. If thinner has been added, test to see if a drop placed on top of paint mixes or flattens out on the surface. If not, try different thinner in fresh batch of paint.