Graco Fluid Automation 633, Operation, Page: 39 / 51

Setup
332078C 39
f. Collect a sample of 20 cycles into a tare
weighed cup using the manual actuator on the
color injector solenoid valve.
g. Weigh the cup and subtract the tare weight.
h. Divide the sample by the number of times the
actuator was pressed.
i. Enter the actual value of the shot volume into
the “Color Injector Shot Size” variable on the
“Preset Screen”.
j. Connect the color injector to the manifold
assembly.
k. Prime the injector.
4.
Adjust the Feed Station Pressure
Refer to the SR657-1M-LR Meter-Mix Dispense Sys-
tems-Operation manual for additional details.
a. Monitor the pressures in the individual cylinders
during a dispense.
b. Set the “Packing Pressures” on the “Preset
Screen” to the pressures monitored in the previ-
ous step.
c. Set the feed station material pressure to 50-100
psi (345 kPa - 0.7 MPa, 3.4-7 bar) higher than
the pressures monitored in step a.
To avoid serious injury and machine damage, the
color injector control valve should not be set beyond
100 psi (0.7 MPA, 7 bar).