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Digital Dosing Units
33
Operation – Extrusion - Constant
1. Ensure that the unit is properly installed (Section 3.1), a recipe is entered (Section
3.4.1), and the feeder is calibrated (Section 3.6), before attempting to begin
operation.
2. If desired, clear the totalizer by pressing continuously for 5 seconds until the
display is reset to “00.00.”
3. Place the Digital Dosing unit into operation by pressing . The green LED will
light when the unit is ready to dose, but the Digital Dosing unit will not feed until
the extruder begins operation.
4. Start the extruder. The Digital Dosing unit will begin dosing material as soon as
the extruder starts. If the unit is installed properly, the process machine symbol
will light on the controller when the extruder starts. The disc symbol will
light when the Digital Dosing unit is dosing material.
5. To stop the dosing process while the extruder is operating, press . The
Digital Dosing unit will automatically stop dosing when the extruder stops.
6. While the unit is dosing, depending on software revision, the current recipe can be
viewed but not modified, by pressing . In some software versions, the
percent additive can be changed while the unit is dosing.
NOTE: See Appendix A, Troubleshooting, for information on problems or errors
encountered and their resolution.