Graco XM PFP Repair Parts page 8

Pressure Relief Procedure
7. Open recirculation ball valves.
8. Disengage trigger lock.
9. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger gun to relieve pressure in mate
rial hoses. Use a pail lid with a hole to dispense
through. Seal around hole and gun with a rag to pre
vent splash back.
10. Engage trigger lock.
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11. Close mix manifold material ball valves.
12. Perform Flush Mixed Material procedure in XM
PFP Operation manual to prevent mixed material
curing in the system and to relieve pressure in the
solvent lines.
13. If the system will be shutdown for more than a few
hours, fill pump A and B packing nuts with throat
™
seal liquid (TSL ).
NOTE: Fluid pressure in the system is now relieved.
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