Lauda MC 250 Operating Instructions Manual

Also see for MC 1200: Operation instructions Operation manual

Contents

Lauda MC 250 Operating Instructions Manual Manual pdf 40 page image

6.3 Screen displaysThe default display is the indication shown in the screen if no otheroperations such as configuring settings are being performed. Theactual temperature of the machine is shown in the default display.The machine menu with possible settings can be invoked using theENTER button.Further information about the menu structure and themenu navigation can be found inÄ Chapter 6.2 ‘Defaultdisplay and menu items’ on page 38.The display flashes when a menu item in the screen has beenselected. The setting can now be made. The value entered isapplied when the setting is confirmed.6.4 Specifying the setpoint temperatureYou specify a setpoint for the temperature control. This valuespecifies to which temperature the heat transfer liquid will becooled. The upper and lower temperature limit values of the devicehave been set to the default values 45.0 °C and 5.0 °C. The tem-perature limits define the temperature range of your application, i.e.in which range any temperature control can take place. A warningis output by the device if the temperature is outside the limits. Thisrange is necessary so that no unnecessary warnings are outputduring transient conditions of the temperature regulation. Thedefault values can be limited subsequently depending on the heattransfer liquid.For operation of the device with Aqua 90, the temperature setpointmust not be set smaller than 5 °C. Also use the lower temperaturelimit value LoÄ ‘Lower temperature limit value’ on page 42 andset this to 3 °C so that a warning is output for lower temperatures.The yellow LED on the device lights if any temperature setpoint oractual temperature is less than 5 °C. It warns about incorrect useof the heat transfer liquid and consequential damage to the device.If the device is operated with liquid temperatures below5 °C, Kryo 30 (glycol / water) must be used in the deviceas heat transfer liquid.Default displayFig. 13: Default displayMenuEditing displayRelationship between temperaturesetpoint and temperature limitvaluesOperationMicrocool40