Graco Inc PRO 4500sc Operation, Pressure Relief Procedure, Filter the Fluid, Operating Checklist

Operation

Pressure Relief Procedure

WARNING

PRESSURIZED EQUIPMENT HAZARD

The system pressure must be manually relieved to prevent the system from starting or spraying acci- dentally. To reduce the risk of an injury from electric shock, accidental spray from the gun, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you:

Dare instructed to relieve the pressure,

Dstop spraying,

Dcheck or service any of the system equipment,

Dor install or clean the fluid nozzle.

1.Turn the ES ON–OFF Lever to OFF.

2.Turn off the air and fluid supply to the gun.

3.Trigger the gun into a grounded metal waste container to relieve fluid pressure.

4.Open the pump drain valve, having a waste con- tainer ready to catch the drainage.

5.Leave the pump drain valve open until you are ready to spray again.

Filter the Fluid

Filter the fluid to remove coarse particles and sediment which could clog the spray nozzle.



3 in. (76 mm) square cut out and finger of glove cut off

NOTE: If gloves are worn, they must be conductive or modified as shown so they do not interfere with operator grounding through the gun.

Operating Checklist

Check the following list daily, before starting to operate the system, to help ensure safe, efficient operation.

____ 1.	All the operators are properly trained to
	safely operate an electrostatic air spray
	system as instructed in this manual.
____ 2.	All the operators are trained how to properly
	relieve pressure as instructed at left.
____ 3.	The system is thoroughly grounded and the
	operator and all persons entering the spray
	area are properly grounded. See Ground
	the System, page 8.
____ 4.	The operator is not wearing gloves which
	insulate the hand from the spray gun. If
	worn, gloves must be conductive or modified
	as shown in Fig. 3 so as not to interfere with
	the operator grounding through the gun.
____ 5.	The condition of the electrical components of
	the spray gun has been checked as
	instructed in Electrical Tests, page 20.
____ 6.	The ventilation fans are operating properly.
____ 7.	The workpiece hangers are clean and
	grounded. Contact points must be sharp
	points or like knife edges.
____ 8. All the debris, including flammable liquids
	and rags, is removed from the spray area.
____ 9.	All flammable liquids in the spray booth are
	in approved, grounded containers.
____ 10.	All conductive objects in the spray area are
	electrically grounded and the floor of the
	spray area is electrically conductive and

Fig. 3

06445

grounded.

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