Lauda RP 845 Operating Instructions Manual page 92

Overtemp. cut-off
8/
Overtemp. alarm
rDLMO
− Before longer periods of unsupervised operation, the overtemperature protection
92
Setting the overtemperature cut-off: Recommended setting: 5°C
above desired bath temperature.
Caution!! The overheat switch-off point T
functioning independently of the bath control. Setting of the nominal
temperature, however, can be limited via the functions T
7.8.3) independently of T
− The cut-off point is displayed in the LED display on pressing the
°C
key
Changing the overtemperature cut-off point:
− For safety, and to guard against unintentional adjustment, the key
briefly press
off can be set with the keys
− Quit the change mode by pressing
automatically after 5 seconds, while you keep
− This somewhat complicated procedure is intended to prevent
unintentional adjustment.
− Not higher than 25 °C below the fire point of the heat carrier liquid used (
6.2 and 6.3).
− The setting range is restricted to 5°C above the upper limit of the working
temperature range ( Tih
− If the bath temperature rises above the overtemperature cut-off:
1. Alarm sounds as dual-tone signal.
2.
3. The red LED
°C
− Rectify cause of fault.
− Wait until the bath temperature has cooled below the cut-off point
or set the cut-off point higher than the bath temperature. When
rDLMO
− Unlock with the
Unlocking is not possible on the Command Console!
should be checked. To do this
Proline Low-temperature Thermostats
max
.
must be held pressed during all the following entries. Now,
. The display flashes and the overtemperature cut-
7.8.3).
rDLMO
for overtemperature appears in the display.
above the fault triangle
Heater switches off on both poles,
Pump and refrigerating unit are switched off electronically.
is shown in the display:
key.
Starting up
is controlled by a system
max
.
or .
for a few seconds or
and T (
ih il
pressed.
Section
flashes.
YACE0072 / 21.08.07