Graco ProMix 2KS Operation page 62

Color Change
Color Purge/Dump
Step P0-P1
• 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
Step P1-P2
• 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
Step P2-P3
• 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
Step P3-P4
• 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
Step M0-M1
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
Step M1-M2
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 sol-
vent chop cycle. The number of chop cycles is deter-
mined by dividing the Total Chop Time by the sum of the
Air and Solvent Chop Times.
Final Purge
Step M2-M3
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
Step M3-M4
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.
Purge Active
Step M0-M3
The system turns on the Purge/Recipe Change Purge
Active output during steps M0-M3.
Fill Active
Step M3-M4
The system turns on the Recipe Change Fill Active out-
put during step M3-M4.
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