Repair; Pressure Relief Procedure - Graco PRO 244572 Instructions-Parts List Manual

Repair

Repair

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 electric shock,
follow the Pressure Relief Procedure whenever you:
• are instructed to relieve the pressure
• stop spraying
• check or repair any of the system equipment
• or install or clean the spray tip.
1. Turn the ES ON/OFF valve OFF.
2. Lock the trigger.
3. Turn off the air bleed valves to the fluid source and
to the gun.
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4. Unlock the trigger.
5. Trigger the gun into a grounded metal waste con-
tainer to relieve the fluid pressure.
6. Lock the trigger.
7. Open the pump drain valve and all other fluid drain
valves in the system, having a waste container
ready to catch the drainage. Leave the drain
valve(s) open until you are ready to spray again.
I ES O
8. If the nozzle or hose is completely clogged or pres-
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sure is not fully relieved, slowly loosen the hose end
coupling. Now clear the nozzle or hose.
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