Graco VRM 24F872 Instructions Manual page 34

Operation
Flow Meter or Flow/Ratio Calibration
1. At the main Calibration screen, press
any previously learned flow meter calibration data.
NOTE: At this point, the "Learning New Set Point" advi-
sory will be generated.
2. Select to enter the flow meter calibration
screen.
3. On the flow meter calibration screen, enter the flow
rate and ratio that will be used during normal opera-
tion.
4. If either K-Factor value is 0, enter 3000 if an
HG6000 flow meter is installed in that side.
NOTE: In the following steps, the weight of the dis-
pensed materials is used to calibrate the flow meters.
This works regardless of whether the selected dispense
mode is weight or volume.
5. Weigh two buckets and record the weight of each
then place below the ratio check valves.
6. With two buckets in place to catch material dis-
pensed from the ratio check valves, press
begin dispensing.
7. After dispensing for at least 10 seconds, press
to stop dispensing.
NOTE: If available, a footswitch can also be used.
8. Weigh both buckets and enter the net weight of
each material dispensed in the last two fields pro-
vided on the screen.
34
NOTE: After the weights are entered the K-factor will be
shown to the right of the weights. The previous K-factor
is shown to the left of the weight entry fields.
to erase
9. Repeat steps 5-8 until the new K-factor shown is
within 1% of the previous K-factor.
10. Select
to
to exit the flow meter calibration screen.
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