DENTSPLY MULTIMAT Touch - Voltage Loss Bridging (Power Failure Recovery); Check Firing Chamber Temperature

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to close the firing chamber again and continue the program. After the temperature has been
set, post-firing is possible for up to three minutes max. This post-firing time is counted up
from zero. Post-firing can be cancelled at any time by means of the ”start/stop” key.
Note: The View function can only be activated, if no tempering or cooling is programmed.
Temperature change is only visible at the actual value. The set value remains on
change.
6.4 Voltage loss bridging (Power failure recovery)
(Configuration submenu Section 4.5.1)
The Multimat
®
Touch is equipped with a power failure bridging device. This bridging will
become effective as soon as there is a mains power failure during the running firing program.
The bridging duration can be set from 1 - 20 seconds. If the downtime is shorter than the
bridging time, the program will continue to run, with the following message appearing at the
end of the program: "E 07 – There was a power failure”. If the downtime exceeds the bridging
time, the program will be canceled and again the following message appears: "E 07 – There
was a power failure”.
Note: Check the firing results!
Setting the voltage loss bridging
1. Press sensor button "M"
2. Press sensor button "Configuration"
3. Press sensor button "Interrupt time"
4. Input bridging time between 1 and 20 seconds on the numeric keypad.
5. Press sensor button "M" enough times until the preceding program appears again.
6.5 Check firing chamber temperature
(Calibration set “Silver Sample manual”, REF D03 532 803 (optional))
The precision of the temperature control system has been accurately preset at our site. If, for
any reason, there should be a need to check the temperature within the firing chamber,
proceed as follows:
The following items are required:
! 1 Dentsply silver sample carrier
! 1 piece of silver wire – diameter: 0.3 mm, length: 37 mm.
Procedure:
! Let the furnace warm up for approx. 1 hour at 600° C.
! Place the piece of silver wire in the Dentsply sample carrier.
! Reset the calibrating offset (see 4.5.2.1)
Following data are saved as “Silver wire calibration”, Program number 375 under “Special
Program”:
Preheating temperature 650°
Pre-drying time 0 minutes
Drying time 0 minutes
Preheating temperature 3 minutes
Vacuum level 0 hPa
Heat rate 120°C / Min
Firing temperature 961° C (melting point of the silver wire)
Vacuum time 0 minutes
Firing time 1 minute
Tempering temperature 0° C
Tempering time 0 minutes