29
Ratio Check
1.
Open the ratio check ball valves and close the material hose ball valves. Cycle the machine several
times into a waste container to clear and prime.
2.
Weigh six small empty cups and label as A1, A2, and A3. Record on Ratio Check form.
3.
Set the shot size to 100%.
See Adjusting the Shot Size
.
4.
From the SHOT FLOW screen do the Material Pump Servo Start Up Sequence
(If Required)
press the SHOT button.
5.
Place empty cups under the nozzles.
6.
Press and release the start device.
7.
Repeat steps 5 and 6 with all three sets of labeled cups.
Always take a dump shot into a waste container before taking weights.
8.
Reweigh all three cups and record results on form.
9.
Complete weight calculations. If significantly different,
see Troubleshooting section.
10.
Open the material hose ball valves and close the ratio check ball valves.
The Ratio Check is a simple procedure where individual samples of material are
collected, weighed, and compared to the manufacturer’s desired outputs. We
recommend that you do a ratio check — by weight — at least once a day, and if the
machine is used in production for more than one shift, then once a shift. A ratio check
log is included with this binder. Before proceeding, phase the pumps and prime the
ratio check valves (if equipped) and material hoses.
