Graco PRECISION MIX 949-999 Manual page 13

Setup Screens
NOTE: Entries made in the Setup screens are buffered. When the QUIT key is pressed, returning you to the title
screen, the changes made in Setup are transferred to the battery-backed memory. Since the data used while
operating is also buffered, changes made in Setup will not effect Precision Mix™ operation until the operator switch
is moved to the Standby position and then back to Mix, transferring the data from the battery-backed memory to the
operating buffer.
Main Title Screen
GRACO
PRECISION MIX™™
REV. 1.2 RECIPE 00
RUN SETUP BAT
Press SETUP
Setup Ratio Title Screen
SETUP RATIO?
RECIPE 00
NO YES QUIT
Press YES
Program Ratio
RATIO A/B IS XX.X:1
BY VOLUME
NEW VALUE? XX.X
NO QUIT
Press NO
(Press QUIT to return to
Setup Ratio Title screen)
Ratio Tolerance
RATIO TOLERANCE
VALUE IS XX
NEW VALUE? XX
NO QUIT
Press NO
A Dispense Time
A DISPENSE TIME
LIMIT IS XXX SEC
NEW VALUE? XXX
NO QUIT
Press NO
684-015
Pendant Screens
GTOT
RPT
This screen can only be accessed by pressing the unmarked
key in the F5 location on the black pendant. This screen
shows the Revision No. of the software. It will also show the
present Recipe No. the Precision Mix™ is operating with if
the recipe portion of the program is turned on. From this
screen, you can go into the Run, Setup, Batch Totalizer,
Grand Totalizer and Clock screens.
If you want to change the program in the ratio category,
press the YES key. If you do not want to change the
program in the ratio category, press the NO key to move to
the Setup Purge Title screen (on page 14). Press the QUIT
key to return to the Main Title screen. NOTE: RECIPE 00
only appears when the recipe portion of the program is
activated.
With this screen, you select the volumetric mix ratio the
Precision Mix™ will operate at. The volume can be set from
0:1 to 99.9:1. The value of Component B that you enter
must be a 1. If your B value does not equal one, you must
convert the ratio. Example: If a 3:2 ratio is desired, you
would convert the ratio to 1.5:1. 1.5 parts of Component A
would then be dispensed to every 1 part of Component B.
To enter this value, press the 1, the decimal point, and the 5
on the pendant keyboard. Then press the ENTER key. The
new value will display on the top line.
With this screen, you select the tolerance of the ratio entered
above. If this tolerance is exceeded, the Precision Mix™ will
shut down. The value can be set from ± 0 to 25 percent.
Example: If the mix ratio is 2:1 and the tolerance is 5%,
when the Precision Mix™ checks the ratio on each cycle, if
the ratio is within 2.1:1 or 1.9:1, the system will continue to
operate. If the ratio is not within those values, the system
will shut down. To enter this value, press 0, then 5 and
ENTER. The new value will display on line two.
This is a settable time limit that monitors the amount of time
it takes from the beginning of the Component A dispense to
the end. The clock counts down when the spray device is
triggered and will reset once the dispense is completed. If
the time elapses before the dispense is complete, the
Precision Mix™ will go to an alarm condition. To enter a
new value, type in the number on the key pad and press
ENTER. The value can be set from 0 to 999 seconds. It will
display on line 2. NOTE:
properly if the air switch in the solenoid enclosure is not set
correctly. See manual 308-297.
This setting will not function
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