Graco ProMix 2KS Operation Manuals page 70

Color Change
Color Purge/Dump
• This sequence flushes out the color with solvent,
from the color valve to the Dump A valve.
• The color change solvent valve and the Dump A
valve open during the Purge Time.
• The color change solvent valve closes when the
Purge Time expires.
Color Fill
• This sequence fills the line with the new color all the
way to the Dump A valve.
• The new color valve and the Dump A valve open
during the Fill Time.
• The new color valve and the Dump A valve close
when the Fill Time expires.
Catalyst Purge/Dump
• This sequence flushes out the catalyst with solvent,
from the catalyst valve to the Dump B valve.
• The catalyst change solvent valve and the Dump B
valve open during the Purge Time.
• The catalyst change solvent valve closes when the
Purge Time expires.
Catalyst Fill
• This sequence fills the line with the new catalyst all
the way to the Dump B valve.
• The new catalyst valve and the Dump B valve open
during the Fill Time.
• The new catalyst valve and the Dump B valve close
when the Fill Time expires.
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First Purge
Select the First Purge Source (air, solvent, or 3rd valve)
and First Purge Time. For most applications, air is
selected.
The system purges the old material from the dose
valves to the gun, using only the selected purge media
(usually air). The selected purge valve opens during the
First Purge Time and closes when the time expires.
Chop Cycle
Select the Chop Type (air/solvent or air/3rd valve) and
Chop Times.
The air purge valve opens only during the air chop
cycle, and the solvent (or 3rd valve) opens only during
the solvent chop cycle. The number of chop cycles is
determined by dividing the Total Chop Time by the sum
of the Air and Solvent Chop Times.
Final Purge
Select the Final Purge Source (air, solvent, or 3rd valve)
and Final Purge Time. For most applications, solvent is
selected.
The system fills the line with solvent from the dose
valves to the gun, using only the selected purge media
(usually solvent). The selected purge valve opens
during the Final Purge Time and closes when the time
expires.
Fill
This sequence fills the line from the dose valves to the
gun, and is also referred to as the mixed material fill.
The system begins mixing components A and B until the
Fill Time expires.
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