Pressure Relief Procedure; Flushing - Graco Reactor A-20 Operation

Air operated, electrically heated plural component proportioner
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Pressure Relief
Procedure
1. Turn off feed pumps and agitator if used.
2. Turn PARK/RUN switch to PARK.
3. Trigger gun to relieve pressure.
4. Turn off air inlet valve.
5. Engage gun piston safety lock.
6. Verify gun fluid manifold valves A and B are closed.
7. Close pump inlet supply valves.
311511G

Flushing

Flush equipment only in a well-ventilated area. Do not
spray flammable fluids. Do not turn on heaters while
flushing with flammable solvents.
Flush out old fluid with new fluid, or flush out old
fluid with a compatible solvent, such as toluene,
naptha, or mineral spirits before introducing new
fluid.
Use lowest possible pressure when flushing.
To flush entire system, circulate through gun fluid
manifold (with manifold removed from gun).
Always leave hydraulic oil or a non-water based,
non-water absorbent fluid in system. Do not use
water.
Only use flush solvents that are compatible with Fluo-
ti2409a
roelastomer seals. Non-compatible solvents will dam-
age seals and cause hazardous conditions, such as
high pressure leaks and pressure switch failure.
ti2421a

Pressure Relief Procedure

13

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