Initial operation
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7.7 Set chiller mode
For a refrigerated circulator, the chiller mode is preset ex works to automatic
operation. Three different chiller modes can be selected in the operating menu:
• Auto: The controller calculates the duration of the heating process in the
event of a setpoint change of more than +5°K. If the calculated duration of
the heating process is longer than 2 minutes, then the refrigeration unit is
switched off. The refrigeration unit is started as soon as cooling is required.
• On: The refrigeration unit is permanently switched on during operation.
• OFF: The refrigeration unit remains switched off during operation.
The device is switched on.
The cooling machine is connected.
1. Press the
[MENU]
key.
2. Use the arrow keys to select the menu option
<conF>
and confirm with
[OK]
.
3. Use the arrow keys to select the menu option
<cooL>
and confirm with
[OK]
.
The menu option can only be accessed if the circulator detects a connected
refrigeration unit.
4. Select the desired chiller mode and confirm with
[OK]
.
The display flashes briefly.
The chiller mode is set.
7.8 Set temperature warning limits
The low temperature
<tLo>
and high temperature
<tHi>
are adjustable
temperature limits that serve as warning limits for the device. If one of the
warning limits is exceeded during the course of a temperature control
application, then the device issues a warning with an acoustic signal and
displays an error code.
The device is switched on.
1. Press the
[MENU]
key.
2. Use the arrow keys to select the menu option
<SAFE>
and confirm with
[OK]
.
3. Use the arrow keys to select the menu option
<tHi>
and confirm with
[OK]
.
The set value for the high temperature limit starts to flash.
4. Use the arrow keys to set the parameter and confirm with
[OK]
.
The decimal point starts to flash.