Graco VRM 24F872 Instructions Manual page 35

No Flow Meter Machine Calibration
It is highly recommended that the user operate the
machine in weight mode when flow meters are not
installed or have been disabled.
NOTE: In weight mode, the ratio displayed is a weight
ratio and should not be considered as volumetric ratio.
1. Press to enter the Setup screens then press
left or right to navigate to Advanced #3 screen.
Turn off the "Enable Ratio Check Weight Mode
Entry" option.
2. Press and navigate to the shot definition
screen. Define a shot which is 10 times larger than
the desired flow rate selected. This will set approxi-
mately a 10 second dispense time.
Example: If the dispense rate is 300 grams/second,
set the amount to 3000 grams.
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3. Press to exit the setup screen and verify the
ratio check option is not selected.
4. Place a waste container under the mixer.
Press to begin dispensing and record the
average A (Red) and B (Blue) pressures shown on
the ADM.
NOTE: The dispense can be aborted early after record-
ing by pressing .
5. Select Standby mode and perform a base purge.
NOTE: A base purge will dispense only the B (Blue)
material to push all mixed material out of the mixer.
Base purge settings are defined on the System #2
screen, see page 61.
a. Press .
b. Press to begin dispensing.
c. When all mixed material is pushed out of the
mixer, press
NOTE: Approximately 1 to 2 liters of base material will
need to be dispensed.
6. Select Shot mode and select the ratio check option
by pressing .
Operation
to stop dispensing.
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