Ivoclar Vivadent EP 600 Combi - Manual (Page 26)

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6.1 Switching on/off
Put the I/O switch at the rear of the furnace
on position "I". The furnace is now switched
on and the EP600 logo appears on the
display. Subsequently, the unit conducts a
self-test to check the basic functions. The
course of the self-test is shown by means of
a status bar. If the self-test does not reveal
any errors or malfunctions, the preheating
phase is started. The preheating phase
prepares the furnace for optimum
temperature control. The self-test and
preheating phase together take 30 minutes.
After the preheating cycle has been
completed, the unit is ready for operation.
The main menu appears.
Important information
If the temperature in the firing
chamber is above 300 °C (572 °F)
at the time when the furnace is
switched on, only a self-test is
conducted. The preheating phase
is not started.
Important information
When changing from the press
furnace mode to the ceramic
furnace mode (or vice versa),
please keep in mind that the corresponding
stand-by temperature must be present. If the
stand-by temperature does not correspond
with the standard value (ceramic furnace:
403 °C (757 °F); press furnace 700 °C
(1292 °F) the display will show a
corresponding error message.
6.2 Standard press programs
1 Select the desired program and type of
investment ring.
2 Open furnace head with the
corresponding key (112).
3 Place preheated investment ring, ingot,
and Alox plunger in the furnace.
4 Press START; the LED of the start key
lights up (the process is automatically
started).
5 Once the press cycle has been completed,
the furnace head opens automatically
and the buzzer sounds. Immediately
remove the investment ring from the
furnace. Place it on the cooling grid to
cool. The program returns to the initial
position only after pressing STOP. Until
that point, the press time and press cycle
is shown. Close the furnace by pressing
'Close furnace head'.
Important information
Please use the separate cooling
grid and not the sagger tray of the
furnace.
Important information for the
IPS e.max and IPS Empress Systems
Various examinations have shown
that the time taken to remove the
investment ring from the preheating furnace
and to place it in the press furnace
significantly influences the press results.
This process should not take more than
1 minute. If it takes longer, the investment
ring will cool down too much and miscasts
may result.
In addition, make sure to open the furnace
head only immediately before placing the
investment rings in the furnace to prevent
the firing chamber (heater, stone lining, and
in particular the firing plate) from cooling
down too much.
6.3 Firing programs
The firing programs are selected in the main
menu "Firing".
Without program memory card
Page 1
With program memory card
Page 1
Page 2
1 Select the desired program.
2 Adjust the program parameters, if
necessary
3 Open furnace head and place the objects
in the furnace.
4 Press START; the LED of the start key
lights up. The program has now started.
5 After the completion of the program, the
furnace head opens automatically and
the buzzer sounds as soon as the fired
object may be removed.
Important information
For further information about the
firing programs (one-step, two-step
programs), please refer to Chapter
10.4 and 10.5 on page 37–38.
6. Practical Use