Graco PR70 Water Dispenser User Manual


 
Priming and Calibration
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12. Press to arm the machine to take a long CAL
shots. The icon will be highlighted (“
”). Press
to de-arm the machine.
13. Place a container on a scale and tare (zero) it.
14. Place the tared container below the static mixer,
and press
(green) or the footswitch.
15. Press
to erase existing average weight data.
16. Place the container with the dispensed material on
the tared scale.
17. Enter the mass in grams into the HMI, by pressing
or accordingly.
18. Press
to accept the number. The number
entered will be transferred to the right of the
average icon (“
”).
19. Repeat steps 13 through 18, skipping step 15,
several times. Each additional shot weight will be
averaged in the
row with the previous shots.
20. Press
to de-arm the cal shot.
21. Press
twice to return to the Run screen.
Shot Size Definition (M2)
To dispense in Shot Mode, one or more, up to 5, shot
sizes need to be entered. This step is not required for
Operator mode.
From the Run screen, press
, then press , and then
press
once. The following screen will be displayed.
Figure 15: Shot Size and Purge Timer Screen (M2)
Key:
A Shot Number
B Shot Size (in grams).
C Purge Timer Setting (Turned OFF in Figure 15).
D
Purge Timer Alarm Setting.
E Define Shot ICON
F Set Purge Timer ICON
G Purge Timer Warning ICON.
I Screen Number (M2).
J
& keys will navigate to adjacent screens.
1. Press . The following screen will be displayed:
Figure 16: M2 Shot Definition Screen
2. Press or to select a shot number to define.
3. Press
or to enter the shot size.
The shot size (in grams) must be greater
than the Short CAL Shot size from the
previous C4 calibration screen.
4. Press
to accept the value or to retain the
previous value.
5. Repeat the previous 2 steps for other shot sizes as
required.
6. Press
to exit the Shot Definition screen.
7. Press
twice to return to the Run screen.
Ratio Checks
Read all manufacturer’s warning and material MSDS to know the
specific hazards of the material used.
This is a procedure to verify the weight ratio between
the 2 materials. This is easiest to do with two scales.
1. From the Run screen, put the machine in Shot
mode (“
”). See page 13.
2. Verify that the machine is properly calibrated and
phased as outlined in the calibration section.
3. Remove any static mixer attached to the dispense
valve and replace it with a ratio check nozzle.
Place a waste container under the valve to capture
any dispensed material.
4. Select a shot size between the Short and Long CAL
shot sizes previously done, by pressing
or
and
to accept.
5. Place the empty container below the Ratio Check
Nozzle and the footswitch. Discard this shot.