Graco Fluid Automation 633 Operation page 25

Presets Screen
Screen 1
Icon Description
The total shot volume of the 633 machine is 150 cc's. The value in this field indicates how
much material is required to fill the mold in the press. If there is not enough material left in the
cylinders to fill the mold, the machine will trigger a refill.
NOTE: The unit will not perform a refill during mid-dispense if a user enters a value greater
than the capacity of the metering unit. If the metering unit runs out of material during a dis-
pense, it will not refill until the "screw rotate signal" turns off.
The unit monitors the pressure before the material enters the hoses and makes adjustments
to maintain this pressure.
NOTE: There may be a pressure drop at the outlet of the mixer.
The unit will leave the inlet valves open until the specified pressure has been reached
because the material is compressible. This insures that the unit has been refilled and it has
reached the fill point, which is 2 cc's less than the maximum position point. If this pressure is
not reached, a refill alarm will sound.
The higher viscosity material will require a higher packing pressure. Monitor cylinder pres-
sures during the dispense process and adjust this and the feed station pressures accord-
ingly.
332078C
Screen Identification
25