32 D33451 | Date 01/2018
Operation and control
You can now
► restart the programme as described
► select another programme for processing in menu mode (see page 58) and run it as
described.
► return to manual mode. To do so, reactivate it by pressing the
activation key next to the status display, then turn the turn
control until the hand symbol
is highlighted in colour and
press the confirmation key.
5.6 Monitoring function
5.6.1 Temperature monitoring
The appliance is equipped with a multiple overtemperature protection in accordance with
DIN 12 880. This serves to avoid damage to the chamber load and/or appliance in case of a
malfunction:
► electronic temperature monitoring (TWW)
► automatic temperature monitor ( ASF)
► mechanical temperature limiter (TB)
The monitoring temperature of the electronic temperature
monitor is measured via a separate Pt100 temperature sensor in
the interior. Temperature monitoring settings are made via the
ALARM display. The settings made apply to all operating modes.
If temperature monitoring has been triggered, this is indicated
by the temperature display: the actual temperature is highlighted
in red and a warning symbol
is displayed ( Fig. 18 ). The type of
temperature monitoring triggered (TWW in this example) is
shown beneath the temperature.
If the acoustic alarm has been activated in menu mode (
Sound
see page 59, indicated by the speaker symbol
in the alarm
display), the alarm is additionally signalled by an intermittent
acoustic signal, which can be turned off by pressing the confir-
mation key. Information on what to do in this case is provided
in chapter Malfunctions, warning and error messages from page
41.
Before reading how to adjust temperature monitoring (from page 34), please read the
description of the individual monitoring functions here.
Electronic temperature monitoring ( TWW)
The manually set monitoring temperature min and max of the overtemperature control is
monitored by an adjustable over/undertemperature controller (TWW) of protection class 3.3
according to DIN 12 880. If the manually set monitoring temperature
max is exceeded, the
TWW takes overtemperature control and begins to regulate the monitoring temperature (Fig.
19).
Manual Mode
12.Sept.2012
13:44
ALARM
max
38.5°C
1.0K
min
36.5°C
auto
+
-
TEMP
TWW Set 38.5 °C
42.4°C
Fig. 18
Temperature monitoring
triggered
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