BA-UI-EN-D33363.pdf - 第31页

D33363 | Date 01/2020 31 Operation and control 5.5.1 Electronic temper ature monitoring The monitoring temperature of the electronic temperature monitoring is measured via the Pt100 temperature sensor in the interior of …

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30 D33363 | Date 01/2020
Operation and control
3. Press the confirmation key.
The display now shows the remaining time in
a large font and the approximate end time in
a smaller font beneath.
TIMER
30m04h
End
13:30 23.11.
4. Now, as described under 5.4.2, set the individual values for temperature, air flap position
etc. which you want the appliance to operate at. The set values can be changed at any
time while the timer elapses. The changes are effective immediately.
In Setup, you can choose if the timer should run setpoint-dependent or not. This deter-
mines whether the timer should not start until a tolerance band around the set
temperature is reached or whether it should start right after activation (see page
41). If the timer runs setpoint-dependent, this is indicated by the
symbol in the
timer display.
When the timer has elapsed, the display shows 00h:00m. All func-
tions (heating etc.) are switched off. If a fan had been active, it will
keep on running for a short safety period. In addition, an acoustic
alarm sounds, which can be turned off by pressing the confirma-
tion key.
To deactivate the timer, open the timer display by pressing the
activation key again and then turning the turn control to reduce
the timer setting until --:-- is displayed. Confirm with the confirma-
tion key.
5.5 Temperature monitoring
The appliance is equipped with a double overtemperature protection (mechanical/electronic)
in accordance with DIN 12 880. This serves to avoid damage to the chamber load and/or ap-
pliance in case of a malfunction:
► Electronic temperature monitoring (TWW/TWB) (TWB only if equipped with a second tem-
perature sensor, option A6)
► mechanical temperature limiter (TB)
TIMER
00m00h
End
13:30 23.11.
TIMER
--m--h
End
9:00 23.11.
D33363 | Date 01/2020 31
Operation and control
5.5.1 Electronic temperature monitoring
The monitoring temperature of the electronic temperature monitoring is measured via the
Pt100 temperature sensor in the interior of the chamber. The type of temperature monitoring
(TWW/TWB) and the monitoring temperature are set in menu mode in the Setup display (see
page 40). The setting made applies to all operating modes.
If the manually set monitoring temperature is exceeded, temperature monitoring takes over
temperature control and begins to regulate the monitoring temperature (TWW, Fig. 17) or
switches off the heating (TWB, Fig. 18).
The two types of temperature monitoring are only available for appliances equipped with
a second temperature sensor (option A6). For appliances with only one temperature
sensor, only TWW is available.
t
°C
Setting Max Alarm
Set temperature
Controller error
Emergency operation
Fig. 17 Schematic diagram of how the TWW temperature monitoring system works
t
°C
heating switched off by TWB
Setting Max Alarm
Set temperature
Controller error
Fig. 18 Schematic diagram of how the TWB temperature monitoring works (only if equipped
with a second temperature sensor, option A6)
32 D33363 | Date 01/2020
Operation and control
5.5.2 Mechanical temperature monitoring: Temperature limiter (TB)
The appliance is equipped with a mechanical temperature limiter (TB) of protection class 1 in
accordance with DIN 12 880.
If the electronic monitoring unit should fail during operation and the factory-set maximum
temperature is exceeded by approx. 20 °C, the temperature limiter, as the final protective
measure, switches off the heating permanently.
5.5.3 Function
If temperature monitoring has been
triggered, this is indicated by the
temperature display: the actual tempera-
ture is highlighted in red and a warning
symbol
is shown (Fig. 19 ). The type
of temperature monitoring triggered is
shown beneath the temperature: TB for
mechanical and TWW or TWB for
electronic temperature monitoring. The
alarm is additionally signalled by an
intermittent acoustic signal, which can
be turned off by pressing the confirma-
tion key. Information on what to do in
this case are provided in the chapter
Malfunctions, warning and error
messages from page 33.
5.6 Ending operation
Warning!
Depending on the operation performed , the surfaces in the working
chamber and the chamber load may still be very hot after the appli-
ance is switched off. Touching these surfaces can cause burns. Wear
heat-resistant protective gloves or wait until the appliance cools
down.
1. Switch off active appliance functions
(turn back the set values).
2. Remove the chamber load.
3. Switch off the appliance (Fig. 20 ).
TIMER
End 14:45
44h:44m
°C
0°C
20%
FLAP
LÜFTER
%
0
KLAPPE
40%
TIMER
30m04h
Ende
13:30 23.11.
.°C
Set 180.0°C
TEMP
TB Set 190.0
°C
195.4°C
180.4°C
TEMP
Set 185
.0°C
23.2°C
TEMP
Set 180
.0°C
TEMP
TB Set 190.0 °C
195.4°C
Fig. 19
Temperature monitoring triggered
ON
O
O
ON
N
N
N
O
O
N
O
Fig. 20 Switch off appliance