Graco HFR Setup page 60

Appendix B - ADM Setup Screens Overview
Mix Head Operating Details Screen
This screen allows the user to define the mix head
operating parameters.
• Low Pressure Circulation: The percentage of set-
point, 10%-90%, at which the system will run
during low pressure circulation.
• Pre-Dispense Circulation: The time for which the
system will circulate at high pressure prior to dis-
pensing when the dispense command is triggered
while the system is in low pressure circulation.
• Post-Dispense Circulation: The time duration that
the system will remain in high pressure circulation
after a dispense before dropping into low pressure
circulation. Entering "0" disables the post-dispense
time.
Press to go back to the System Screen 2.
60
System Screen 3
This screen allows the user to edit the labels for the A
(Red) and B (Blue) sides of the machine. The labels set
for the A (Red) and B (Blue) sides of the machine are
displayed throughout the screens. Labels are limited to
five characters.
To edit a label:
1. Press .
2. To edit the A (Red) label, press
To edit the B (Blue) label, press the down arrow
then press . The keyboard will appear on the
screen. See Keyboard Screen on page 61.
The pressure imbalance setting is set from this screen.
Pressure imbalance is the allowable difference in pres-
sure between the two materials before an alarm is trig-
gered. The input range is 145-2000 psi (1-14 MPa,
10-138 bar).
The flowmeter types are defined on this screen. The
ratio deviation value is the allowable percentage before
the machine displays a pop-up notification. The ratio
alarm value is the allowable percentage difference
before the machine will stop a dispense.
The ratio displayed between chemicals can be changed
between blue or red, allowing either chemical to be dis-
played as a ratio to 1.
This screen allows the user to enter material specific
gravities.
.
Pressure
Imbalance
Setting
3A2797ZAA