Graco Inc 3500WB, 308584, 222700 manual Gun Operation Troubleshooting continued

Troubleshooting

Gun Operation Troubleshooting (continued)

Excessive spray fog	The air pressure is too high.		Reduce the air cap air pressure by
			closing the atomizing air valve more
			or decreasing the gun air inlet pres-
			sure; use the least air pressure
			needed for good results. Do not re-
			duce below minimum pressure need-
			ed for full voltage. See page 18.
	The fluid is thinned too much.		Properly thin the fluid.
No fluid sprays from the gun	The fluid supply is low.		Check the fluid supply; add fluid if
			necessary.
	The fluid nozzle is dirty or clogged.		Clean the fluid nozzle; see page 21.
	The fluid nozzle is damaged.		Replace the fluid nozzle; see page
			30.
The equipment is covered with	The exhaust air flow is insufficient or		Check for the proper CFM; check the
fluid	not directed properly.		baffles and direction of the air flow.
	The distance between the gun and		Adjust the spraying distance to 8 to
	workpiece is incorrect.		12 inches (203 to 305 mm).
Dirty air cap	The electrode is bent.		Straighten the electrode.
	The nozzle orifice is damaged.		Replace the fluid nozzle; see page
			30.
	The air cap and fluid nozzle are mis-		Check the air cap and fluid nozzle
	aligned.		seat for fluid buildup. Clean or
	Air		replace parts as needed; see page 21
			or 30.
	Cap
	Fluid
	Nozzle
	ALIGNED	MISALIGNED

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