29
Operation and control
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. 16 ). The type
of temperature monitoring triggered
(TWW in this example) is shown beneath
the temperature. If the acoustic alarm
has been activated in the
Signals
menu
(see page 45 ), which is indicated by the
speaker symbol
in the alarm display,
the alarm is additionally signalled by an
intermittent acoustic signal. Information on what to do in this case are provided in the
chapter “Malfunctions, warning and error messages” from page 34.
Before reading how to adjust temperature monitoring (from page 31), please read the descrip-
tion of the individual monitoring functions here.
5.5.1
Electronic temperature monitoring ( TWW)
The manually set monitoring temperature
min
and
max
of the electronic overtemperature
control is monitored by an adjustable over/undertemperature controller (TWW) protection
class 3.3 acc. to DIN 12 880 (or over/undertemperature controller (TWW) protection class 3.1
for UIS appliances). If the manually set monitoring temperature
max
is exceeded, the TWW
takes over temperature control and begins to regulate the monitoring temperature (Fig 17 ).
t
°C
Setting MAX
Set
temperature
Controller error
Emergency operation
Fig. 17
Schematic diagram of how the TWW temperature monitoring works
End 14:45
44
h
:44
m
°C
0°C
20
%
FLAP
LÜFTER
%
0
LUFTKLAPPE
40
%
TIMER
30
m
04
h
Ende 23.11. 13:30
°C
0°C
TEMP
TWW Set 190.0
°C
195
.4
°C
180
.4°C
TEMP
Set 185
.0°C
23
.2°C
TEMP
Set 180
.0°C
TEMP
TWW Set 190.0
°C
195
.4
°C
Fig. 16
Temperature monitoring triggered
