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03/2021
Operation and control
5.4 Monitoring
function
5.4.1 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)
The
ALARM
max
38
.5°C
1.0
K
min
35
.5°C
auto
+-
monitoring temperature of the electronic temperature monitoring is measured via a
separate PT100 temperature sensor in the chamber. 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 on the temperature dis-
play: the actual temperature is highlighted in red and a
warning symbol is shown
The type of temperature monitoring triggered (TWW in this example) is shown beneath
the temperature.
If the alarm sound has been activated in the menu mode (sounds, chapter 7.7, 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 con
fi
rmation key.
Information on what to do in this case is provided in chapter 6.
Before reading how to adjust temperature monitoring (from chapter 5.4.4), please read
the description of the individual monitoring functions here.
5.4.2 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 over temperature control and begins to regulate the monitor-
ing temperature
t
°C
Setting MAX
Set temperature
Controller error
Emergency operation
min
000°C
AL
ON
LIGHT
ON
LIGHT
FEUCHTE
30
.0%rh
Set 30
.0%rh
22
4
TEMP
°C
°C
22
4
TEMP
°C
LI
AL
auto
min
35
.5
TIMER
30
m
04
h
Ende 23.Nov 13:30
°C
TEMP
TWW Set 38.5
°C
38
.9
TIMER
FE
22
.4
37
.0
TEMP
Set
°C
°C
°C
22
.4
TEMP
°C
Set 37.0
TIMER
°C
TEMP
TWW Set 38.5
°C
38
.9
