Graco 222800 Series C Pressure Relief Procedure, Required Service Tools

Service

Pressure Relief Procedure

WARNING

SKIN 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/dispensing,

Dcheck or service any of the system equipment,

Dor install or clean the spray tips/nozzles.

1.Lock the gun/valve trigger safety.

2.Shut off the air supply to the pump.

3.Close the bleed-type master air valve (required in your system).

4.Unlock the gun/valve trigger safety.

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

6.Lock the gun/valve trigger safety.

7.Open the drain valve (required in your system) and/or pump bleeder valve, having a container ready to catch the drainage.

8.Leave the drain valve open until you are ready to spray/dispense again.

If you suspect that the spray tip/nozzle 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/nozzle or hose.

Required Service Tools

DPhillips screwdriver

DFlat blade screwdriver

D16 mm box wrench

DSet of metric socket wrenches

DSet of metric allen wrenches

DSet of adjustable wrenches

DTorque wrench

DPliers

DRubber mallet

DO-ring pick

DSoft brush (for cleaning)

DLarge vise, with soft jaws

DThread sealant

DThread lubricant

DMulti-purpose grease

DHeavy-duty lithium grease (for air valve)

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