4 Safety Measures 9
• Never directly contact hot parts of the furnace. Do not grasp the lift seat, firing
table or firing object with your bare hands. Never put your hand into the hot
firing chamber.
• Protect yourself from electric shock. Do not simultaneously touch any hazardous
active parts such as an optional core-guided heating element and parts
connected to the protective conductor. Protect yourself, for example by using
insulated tools and/or clothing.
• Note that the furnace automatically heats up approximately 30 seconds after it
is turned on, even when the firing chamber is open.
• After a program memory is selected or the program is aborted, the standby
temperature of the selected or aborted program is automatically set in the firing
chamber after approximately 20 seconds. This can be the preheating
temperature or the firing chamber temperature required for drying.
• Do not use your hands or any objects to grasp things in the firing chamber.
This can cause injury from burns or electrical shock.
• The firing chamber has a clear height of 36 mm
. The fired objects (including
the firing tray) may not exceed this height since the temperature sensor could
otherwise be damaged. On the cover plate, there is a cylindrical height gauge
that corresponds with the free height of the firing chamber.
Figure 3
Height
gauge
36 mm
= max. height
• In the Press mode of the D4press, conventional cylindrical press muffles with a
press plunger can be used whose maximum height is 70 mm without the press
plunger, and 90 mm with the press plunger, and whose diameter is not greater
than 60 mm without the press plunger.
• While the firing program is running, the lift automatically moves up and down.
Make sure that no objects are in the way that could hinder the lift movement.
Also do not attempt to manually stop or accelerate the lift.
• The furnace should not be operated for some time after sudden change of
ambient temperature as otherwise condensation may occur in the electronic
components, thus causing damage.
• Never operate the furnace without the firing table!
DEKEMA Dental-Keramiköfen GmbH, AUSTROMAT
®
D4, Version 3, 2006
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