Renfert 276100 0000, Manual

Page: 22 / 360

• If a button is pressed, such as extrude (impression material (2, Fig� 8) or dispense (3, Fig� 8), without
having previously selected a programme, the device will automatically activate the programme� The
LED next to the key goes on�
• The operator can change from one mixing program to a different one at any time by pressing the rele-
vant program key�
5.2 Extrusion
⇒ Set up the unit as instructed in section 5�1�
⇒ Press and hold down the advance key (2) or (3) (depending on
the desired speed or function):
-Impression tray (2), fast extrusion speed
or
-Dispenser (3), slow extrusion speed
♦ The mixing hexagon (13, Fig� 1) starts to turn and threads its
way automatically into the mixing nozzle (21, Fig� 1) and then
stops again�
♦ The pressure discs advance at high speed until they reach the impression material�
♦ Once it comes into contact with the impression material the device will automatically change to the
selected pressing speed and the mixing shaft begins to turn�
⇒ Fill the impression tray or dispenser�
⇒ Release the advance key as soon as the desired amount of material has been extruded�
♦ The pressure discs retract with a short relief stroke to prevent any additional impression material from
being extruded�
The pressure discs will only move if the unit cover is closed.
The threading of the mixer shaft into the mixing nozzle produces an audible noise. This is perfect-
ly normal.
The first 5 cm of material from a newly installed cartridge or from an again inserted used cartridge
should be discarded.
Please note the material manufacturer’s recommendations!
If the cartridge is emptied during an extrusion, the pressure discs automatically return to their
home position so that a new cartridge can be quickly installed to start an new the extrusion pro-
cess.
5.3 Fill Level Indicator and Remaining Amount
5.3.1 Fill Level Indicator
The fill level indicator (1) helps you to estimate the amount of
impression material remaining in the cartridge�
However, after installing a new cartridge or if the cartridge is very
full, the red indicator will at first not be visible.
The indicator will only become visible once the pressure discs
have advanced approx� 25 mm into the cartridge�
5.3.2 Remaining Amount Detection
The duomix II is equipped with an electronic fill level detection.
Once there is only sufficient material remaining in a cartridge to
fill approx. one casting spoon, the yellow “Residual level” LED (5)
goes on�
The indicator passes a residual level marking�
2
3
Fig. 8
Fig. 9
1
5
en
- 8 -