Defining Temperature Limits H I And L O; Refrigeration Unit Submenu Cool - Lauda RA 12 Operating Instructions Manual

7.6 Defining temperature limits
With this function, it is possible to define a minimum and a maximum temperature in which the thermostat controls. By
reaching the temperature limits, a warning appears. In this way setpoint input can be prevented which may damage the
heat transfer medium or the apparatus. For example, if water is used as the heat transfer liquid, 95 °C would be practi-
cable as the maximum temperature and 5 °C as the minimum temperature. The default values are Hi = 105 °C and
Low = -30 °C.
2x for
3x for
and 1x
H i
L o
or
Wait 4 seconds or
7.7 Refrigeration unit submenu
Menu only with cooling thermostats.
Cool
4x to
and 1x
or
Wait 4 seconds or
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Hi
 Select option
Hi
or option
Lo
 Enter the selection
The maximum temperature can be set from 35 °C to 105 °C.
The minimum temperature can be set from -30 °C to 30 °C.
The current temperature limit value is displayed flashing.
 Set the required temperature limit.
 Display flashes 4 seconds  new value is automatically accepted, or
 By pressing the <Enter> key the value is accepted immediately.
CooL
 Call the option
CooL
 Configure the refrigeration system with these possible settings:
Auto
on
oFF
 The selected mode is displayed flashing.
 Display flashes 4 s  new selection is automatically accepted,
or
 it is immediately accepted with the <Enter> key.
Lo
and
Hi
(maximum temperature),
Lo
(minimum temperature) using the key
CooL
.
automatic refrigeration mode;
refrigeration on duty;
refrigeration out of duty.
Alpha
.
7/2022