Shot Size Definition (M2); Ratio Checks - Graco PR70 Series Operation And Maintenance Manual

Priming and Calibration
12. Press to arm the machine to take a long CAL
shots. The icon will be highlighted ("
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
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
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).
Purge Timer Alarm Setting.
D
E Define Shot ICON
F Set Purge Timer ICON
G Purge Timer Warning ICON.
312393C
"). Press
row with the previous shots.
, then press , and then
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
3. Press or
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
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 ("
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
and to accept.
5. Place the empty container below the Ratio Check
Nozzle and the footswitch. Discard this shot.
to select a shot number to define.
to enter the shot size.
to retain the
"). See page 13.
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