Leica CM1950 manual Configuring the Parameters

8. Working with the Instrument

8.3Configuring the Parameters

The instrument must be switched on at least 5 hours before the planned use.

•Turn the lamp on or off.

•This button activates or deactivates the manual defrost of the cooling chamber, specimen head or freeze shelf. (For more detailed handling instructions, refer to the chapter on "Working with the Instrument" on p. 39 of this Operating Manual.)

•Pressing the key button for approx. 5 sec. locks the entire keyboard (the LEDs in the clock go out).

•Pressing the key button briefly, then the "-" key in the specimen head control panel field, switches off the specimen head.

•Pressing the key button briefly, then the "+" key in the specimen head control panel field, switches the specimen head back on.

Programming the temperature of the cryochamber

•The temperature of the cryochamber is set and indicated on the control panel marked with the cryostat symbol.

The actual temperature is the standard indication.

Briefly pressing the "+" or "-" button displays the target temperature.

Set the desired value via the "+" / "-" buttons. Pushing the "+" or "-" button for more than 1 sec. increases or decreases the chamber temperature continuously.

The actual value will be indicated 5 seconds after finishing the program- ming.

Refer to page 52 for a table with guide values. The temperature values given there are based on long-term experience, but are intended solely as guide values, as any tissue may require particu- lar adjustments.

Leica CM1950 Cryostat 37