Proline Kryomats
90
Starting up
YAUE0007 / 10/2/2018
Setting the overtemperature cut-off: Recommended setting: 5 °C
above desired bath temperature.
Caution!!
The overheat switch-off point T
max
is controlled by a
system functioning independently of the bath control. Setting of the
nominal temperature, however, can be limited via the functions T
ih
and
T
il
(
7.6.2) independently of T
max
.
The cut-off point is displayed in the LED display on pressing the
key
.
Changing the overtemperature cut-off point:
For safety, and to guard against unintentional adjustment, the key
must be held pressed during all the following entries. Now,
briefly press
. The display flashes and the overtemperature cut-
off can be set with the keys
or
.
Quit the change mode by pressing
for a few seconds or
automatically after 5 seconds, while you keep
pressed.
This somewhat complicated procedure is intended to prevent
unintentional adjustment.
Set the overtemperature switch-off point T
max
below the flash point of the heat
transfer liquid.
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.
tEMNP
for overtemperature appears in the display.
3. The red LED
above the fault triangle
flashes.
Heater switches off on both poles,
Pump and refrigerating unit are switched off electronically.
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
tEMNP
is shown in the display:
Unlock with the
key.
Unlocking is not possible on the Command remote control!
Before longer periods of unsupervised operation, the
overtemperature protection
should be checked. To do this:
Overtemp. cut-off
90
°C
Overtemp. alarm
tEMNP
°C
Summary of Contents for RP 3050 C
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