Pressure Relief Procedure - Graco PR70 Operation & Maintenance Manual

Pressure Relief Procedure

Follow the Pressure Relief Procedure whenever
you see this symbol.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
The following steps are for a system with an MD2 valve.
1. Place a waste container below the dispense valve.
2. Go to the Shot/Flow screen and Put the DV in Open
mode.
3. Allow the material to bleed out.
The following steps are for a system with an over/under
block.
1. Place a waste container below the mixer outlet.
2. The non drip valves hold a minimal amount pres-
sure.
3. Remove the pins from the block holding the non drip
valves in.
4. Place the non drip valve hoses over a waste con-
tainer.
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Pressure Relief Procedure
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