Graco ProMix PD2K Operation page 80

Setup Mode Screens
Air/Solvent Chop Chop
Air/Solvent Air/Solvent Chop
Air/Solvent Chop replaces the standard Gun Purge
Time parameter on the Flush screen. Instead the
purge is split into three phases: First Purge, Chop,
and Final Purge. The Chop Phase will always start
with Air and each phase has multiple configuration
parameters.
Figure 52 Flush Screen with Air/Solvent Chop
Figure 53 Air/Solvent Chop Timing Diagram
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First Purge First First Purge Purge
Select the material to be either Air or Solvent and
the length of time for the first purge phase, which
dispenses only the material selected.
Air Chop Air Air Chop Chop
Set the air chop duty cycle for the chop phase.
Solvent Solvent Chop Solvent Chop Chop
Set the solvent chop duty cycle for the chop phase.
Total Chop Total Total Chop Chop
Set the length of time for the chop phase. The
system will switch between air and solvent pulses
according to the duty cycles set for the length of the
Total Chop time.
Final Purge Final Final Purge Purge
Select the material to be either Air or Solvent and
the length of time for the final purge phase, which
dispenses only the material selected.
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