Graco 312414D important safety instructions Problem Cause Solution

				Troubleshooting
Problem		Cause		Solution
Gun spitting.	Air getting into paint stream.		Check if fluid source is empty
			and fill.
			Tighten fluid nozzle (11).
			Check and tighten needle
			packing nut (9a).
			Check fluid nozzle (11) for
			damage.
Will not spray.	Fluid control valve (8) turned		Adjust fluid control valve (8)
	too far clockwise.		counterclockwise.
	Fluid source empty.		Refill.
Excessive air blowing back.	Loose fluid nozzle (11).		Tighten fluid nozzle (11).
	Damaged fluid nozzle seal		Replace seal (19).
	(19).
Gun fluid pressure is too high	Using needle/nozzle kit with		Use needle/nozzle kit with
with gun triggered (cannot	too small orifice.		larger orifice.
achieve desired flow rate).
Using a low fluid pressure set-	Using needle/nozzle kit with		Use needle/nozzle kit with
ting, the fluid flow is too high,	too large orifice.		smaller orifice.
making it necessary to restrict
needle travel to reduce fluid
flow.
Fluid system will not operate at	There is no fluid regulator, or		Add low pressure fluid regula-
low enough pressure [below	air regulator is not sensitive		tor, or add more sensitive low
10 psi (70 kPa, 0.7 bar)].	enough at low pressure.		pressure air regulator.
Fluid flow is fluttering while	1.	Fluid filter clogged.	1.	Check fluid filter.
spraying.	2.	Fluid source empty.	2.	Refill
Fluid flow fades while spraying	Air hose size is too restricted		Use 5/16 in. (7.9 mm) I.D. air
high viscosity fluids.	for higher air flow being used.		hose if the hose is 25 ft (7.6 m)
			long. If longer hose is needed,
			use a 3/8 in. (9.5 mm) I.D.
			hose.

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