Graco Inc Series D manual Installation/Operation, Pressure Relief Procedure, System Requirements

Pressure Relief Procedure

WARNING

INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from starting or spraying accidentally. Fluid

under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, 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 spray tips.

1.Lock the gun trigger safety.

2.Shut off the power supply to the pump. Close any bleed-type master air valves.

3.Unlock the gun trigger safety.

4.Hold a metal part of the gun firmly to the side of a grounded metal pail, and trigger the gun to relieve pressure.

5.Lock the gun trigger safety.

6.Open the drain valve (required in your system), having a container ready to catch the drainage.

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

If you suspect that the spray tip or hose is completely clogged, or that pressure has not been fully relieved after following the steps above, very slowly loosen the tip guard retaining nut or hose end coupling and relieve pressure gradually, then loosen completely. Now clear the tip or hose.

System Requirements

WARNING

Keep the wallet-sized warning card provided with this gun with the operator at all times. The card contains important treatment information should an injection injury occur. Additional cards are available at no charge from Graco Inc.

WARNING

Be sure your system has a bleed-type master air valve (pneumatic pumps only) and a pressure drain valve. These accessories help reduce the risk of serious bodily injury, including fluid injection, splashing in the eyes or on the skin, or injury from moving parts, if you are adjusting or repairing the pump or gun.

1.The bleed-type master air valve (air-powered pumps only) relieves air trapped between this valve and the pump after the air regulator is shut off. Trapped air can cause the pump to cycle unexpectedly.

2.The pressure drain valve assists in relieving fluid pressure in the displacement pump, hose and gun: triggering the gun to relieve pressure may not be sufficient.

3.Strain the fluid you are spraying if it contains particles which could clog the spray tip.

How to Use the Gun Trigger Safety

1.To lock the gun trigger safety, turn the latch to a right angle with the gun body. See Fig. 1.

2.To unlock the gun trigger safety, push the latch out and turn it parallel with the gun body.

The trigger safety is shown

in the locked position.

The trigger safety is shown

in the unlocked position.



01474A

Fig. 1