9 Practical Tips 43
E) Programming and program procedure
Another program can be retrieved directly from the Program Display by pressing "+" or
"-" (browse program numbers), or by entering on the alphanumeric keypad. It is not
necessary to launch the Program Manager.
If a program is aborted while under vacuum, the furnace is vented. After venting and
an additional waiting time of approx. 10 s the lift moves down.
The firing table is still very hot immediately after firing. The temperature near the firing
object may thus be too high for drying. Wait a few minutes until the firing table has
cooled down before placing the new firing object on the firing table for drying.
Do not worry if the furnace sets a stand-by temperature in the firing chamber that is
lower than the preheating temperature. If a drying time has been programmed, the
furnace automatically sets a temperature in the firing chamber that is necessary for the
drying.
In program steps COOLING and RELAXATION (standard mode, corresponding to
temperature 2/3 in professional mode), the respective temperatures are activated as
quickly as possible. The firing chamber is opened in order to move the firing goods out
of the hot chamber. As the firing chamber now cools down, the fired materials are
subjected to less radiated heat than corresponds to the cooling temperature. To offset
this effect, the lift moves up slightly closer to the hot chamber. When the firing chamber
has reached cooling temperature, the lift should be completely at the top, and the firing
chamber should be closed again. This ensures that the fired materials are always
approximately
subjected to cooling temperature during the cooling time.
F) Firing programs
Every type of firing tray has an effect on the temperature of the firing object due to its
color and composition. Using a standardized firing tray can thus ensure constant firing
results.
Care in creating firing programs and editing firing parameters has a significant effect on
the quality of firing results. The recommended firing parameters are thus to be seen
only as guidelines. Perform test firings to identify your individual firing parameters
based upon these guidelines.
G) Data security
The furnace includes a software module containing the set programs of the firing
programs when the
AUSTROMAT D4 is delivered. For reasons of data security,
we recommend removing the software module from the furnace and storing it in a safe
place. Also, back up your firing programs regularly on an optionally available memory
module or on a PC using DREAM
®
. You should at least note down your firing program
parameters on paper or print it out.
DEKEMA Dental-Keramiköfen GmbH, AUSTROMAT
®
D4, Version 3, 2006
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