Graco Inc 308455K, 237413, 237409 important safety instructions Operation, Iii

Operation

I.	Pressure Relief Procedure.	III.	Prime the system.
		1.	Remove the pressure pot cover.
	WARNING
		2.	Place a 5 gal. (20 liter) metal pail of fluid in the pres-
	PRESSURIZED EQUIPMENT HAZARD
			sure pot, or install the pressure pot liner (supplied)
	The system pressure must be manually relieved to		and fill it with up to 5 gal. (20 liter) of fluid.
	prevent the system from starting or spraying acci-
	dentally. To reduce the risk of an injury from acci-	NOTE: Order part no. 15D059 for a package of 20
	dental spray from the gun, splashing fluid, or	liners.
	moving parts, follow the Pressure Relief Proce-
	dure whenever you:	3.	Tighten the c-clamp handles (27) securely.

Dare instructed to relieve the pressure,

D	stop spraying,	4.	Close the pressure pot and gun air regulators (33,
			36).
D	check or service any of the system equipment,
D	install or clean the spray nozzle,	5.	Be sure the air relief valve (7) is closed (clockwise).

Dor before loosening or removing the pressure

	pot cover or fill port.		6. Be sure the pressure pot air shutoff valve (17b) is
				closed (valve handle at a right angle to the valve
1. Close the gun air shutoff valve (17a). See Fig. 5.				body), and then connect the air line (C) to the valve.
2. Open the air relief valve (7) by turning it counter-			7. Open the master air valve (A).
	clockwise. Leave it open until you reinstall the
	pressure pot cover or fill port.		8. Open the pressure pot air shutoff valve (17b).
3. Wait until there is no air escaping through the drain			9. Adjust the pressure pot air regulator (33) to 10 psi
	cock fitting before removing the pressure pot cover
	or opening the fill port.			(69 kPa, 0.7 bar).
II.	Flush the pressure pot before the		10. Open the fluid shutoff valve (18).
	first use.		11. Hold the gun against and aimed into a grounded
Flush with a solvent compatible to your fluid. Consult				metal waste pail. Trigger the gun slowly. The gun
the fluid manufacturer’s literature for recommenda-				will emit air until the fluid arrives. When fluid flows
tions. See Flushing on page 11.				freely, release the gun trigger.
			A
				17b
				18
		33		17a
KEY
A	Bleed-type master air valve			27
4	Pressure relief valve
7	Air relief valve	43
17a Gun air shutoff valve
17b Pressure pot air shutoff valve		40
18 Gun fluid shutoff valve
27	C-clamps		7	36
33 Pressure pot air regulator
36	Gun air regulator
40	Gun fluid hose			4
43	Gun air hose

Fig. 5	Model 237413 shown	TI0750B
	308455	9