Graco 332564B important safety instructions Operation Flow Charts, Purge Mode Sequence

Operation Using a Programmable Logic Controller (PLC)

Operation Flow Charts

Purge Mode Sequence

Purge A System Command Write ‘6’ to Input Register 00

NOTE: Purge B command works similarly with the catalyst lines and solvent flow switch 2.

Is system in Standby or
	NO
Pumps Off?

YES

System Mode = Purge A (Output Register 00 = ‘9’)

System opens color solvent valve at remote stack to allow

solvent flow through mix manifold and out gun.

Purge time set according to the flush sequence assigned to

material A in recipe.

No action taken.

Either pumps are currently running or an alarm condition exists.

NO

Is solvent flow switch 1 ON? NO

YES

NO Purge time expired?

YES

System Mode = Standby: Mix Not Ready

(Output Register 00 = ‘13’)

Purge no flow timeout expired?

YES

No solvent flow detected.

Generate alarm.

System closes color solvent valve at remote stack.

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