Ratio Check - Performance Monitor Plus - Graco DC12 Operation & Setup

Ratio Check
Machines equipped with
Performance Monitor Plus Refer to
Fig. 1
See the Performance Monitor Plus section
of this manual for detailed information on the HMI
screens. Supply pump pressures must be set prior
to performing a Ratio Check. See Table 1
Manual Ratio Valve
Refer to Fig. 27
1. Remove Outlet Mix Block and Mixer before
priming system. Install Manual Ratio
Assembly.
2. From the Main Menu select Setup.
3. From the Setup Screen select Supply
Pumps.
4. Verify A and B supply pumps are in the Auto
Mode. Confirm A1, or A2 pump is selected
for use. Repeat for the B material. The
Supply Ready Icon will appear.
5. Select the Dispense Setup Screen.
6. Select the Dispense Mode Shot.
7. Default Shot Time is 10 seconds.
Automatic Ratio Valve
Refer to Fig. 26
8. Select Ratio Valve Auto.
Manual Ratio Valve
Refer to Fig. 27
8. Select Dispense Valve Auto.
9. Select the Run Mode Screen.
10. Place containers under A and B ratio valves.
Note: Record the empty container weight for
each component (tare weight). Container
size should be a minimum of 1 liter.
11. Press the Start Dispense button on the
Pendant Station. A1 and B1 Supply Rams
will begin to pump. Weigh A and B
containers for the gross weight. Calculate
the net weight for each material. The
formula is Gross-Tare= Net.
51
12. Calculate the Weight Ratio A/B = Net weight
of A in grams / Net weight of B in grams.
13. Repeat steps 10-12 at least 5 times
recording the weight ratios. If the system is
Off Ratio proceed to the Troubleshooting
section of this manual.
14. Return to the Dispense Valve Setup Screen.
Select the appropriate Dispense Mode and
Dispense Valve Auto before returning to
normal operation.
Manual Ratio Valve
Refer to Fig. 27
15. Remove Manual Ratio Assembly and install
Mixer Assembly.
312767B