Dekema AUSTROMAT 674 baSiC - Some Practical Tips; General Operation of the Furnace; Heating Element; Thermocouple Temperature Calibration

AUSTROMAT
®
664 iSiC
®
/ 674 baSiC
2
6. Operation
Operating Instructions (Version 03/2018) 95
6.5. Some practical tips
6.5.1. General operation of the furnace
Lift noise
After switching on the firing furnace, the lift moves down and performs automatic lift calibration.
The brief buzzing noise is due to technical reasons and is completely normal. Please note that
the firing furnace does not react to any commands during this calibration time.
Save energy
Close the firing chamber in the event of prolonged breaks between firings. This will save energy
and avoid unnecessary wear on the heating element and unnecessary warming of the lid.
Condensation
Close the firing chamber before switching off the furnace to avoid unnecessary condensation in
the firing furnace.
6.5.2. Heating element
The heating elements are wear-sensitive parts, whose service life depends on how much it is
used. Running the check program regularly makes it easier to identify the correct time to
replace a heating element. Another way of identifying heating element wear is visual inspection.
Look into the open firing chamber from below while the firing furnace is switched off and cold. If
the heating strips are deformed or there is strong glass formation, the heating element should
be replaced.
6.5.3. Thermocouple temperature calibration
Visually inspect the thermocouple regularly - particularly before temperature calibration - while
the firing furnace is cold and switched off and the firing chamber is open. A mirror held at an
angle under the firing chamber can be very helpful. The thermocouples jut out into the firing
chamber. Ensure that they are not bent since this influences temperature measurement and
hence the firing results.
6.5.4. Programming and program steps
Drying the firing object
The insulation 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 insulation table has cooled
down before placing the new firing object on the sinter plate for drying.