Leica Comprehensive Operation Guide and Menu Functions for CM3050 Refrigeration Settings

5.Operation

5.3.4Menu functions: setting parameters of refrigeration, time and preset counter

Once the instrument has gone through the initial sequence of indications, you can go on to the menu functions to select and/or change instru- ment parameters.

If display is locked:

Press key until display background lights up.

Next, press the menu key. With each key stroke the following parameters will be displayed (dis- play sequence as listed):

1.Specimen temperature

(in instruments with specimen cooling only) (-10 - -50 °C)

2.Cryochamber temperature (0 - -40 °C)

3.Selected number of sections - preset counter

(ON/OFF and setting selection from 1 to 999)

1.Specimen temperature:

(instruments with specimen cooling only)

Press key until menu item ‘Set specimen temperature’ is displayed:

S E T T E M P O T - - - ° C

- -

Press key briefly.

The line in the specimen temperature field is replaced by an asterisk.

S E T T E M P O T - - - ° C

- ❄

From this point on the refrigeration sys- tem is activated and the desired set temperature can be selected with one of the arrow keys.

Press arrow key and release upon reaching the desired value.

C

T

.

.

.

. °

C

O

T

-

3

5

°

C

￿

￿

H

O

M

E

-

❄

4.Maximum specimen temperature (ON/OFF)

5.Real time

(in 1-minute steps)

6.Defrost time (starting time of automatic cryochamber defrosting)

(in 15-minute steps)

7.Duration of defrost cycle (cryochamber defrosting) (6 to 12 minutes duration)

Menu items 5 and 6 displayed on 24 hour clock.

Note on the arrow key function:

Each time one of the arrow keys is pressed briefly, the value displayed in the menu will be changed one step up or down.

If an arrow key is pressed and held, the value will change continually (auto-repeat function). When holding the key, scrolling speed will in- crease after a while.

As soon as a value is displayed, it is at the same time automatically stored.

Leica CM 3050 S – Cryostat 29