Leica EM FC7, Operating Manual

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Page 40 Operating Manual Leica EM FC7 01/10
1: LED chamber illumination. Press to switch on or off.
2: Start: press to activate cooling of the chamber to the set temperature. After Start
has been pressed the name of the button changes to Heat. Press Heat to activate
automatic bake out of the chamber. The heating process can be interrupted by
pressing the Heat button again (Stop Heat). Due to the automatic bake out the
controller can be switched off and the bake out process will continue to heat up the
chamber to about +110°C and stops automatically at room temperature afterwards.
3: Reading for the actual temperature which is selected in the menu as command
variable (set point). This temperature can be set with + - buttons. By pressing the
displayed value the set temperature will be shown for about 4 seconds.
4: Three memory buttons. Press to activate the stored value. The reading for the
actual temperature shows the set value for approx. 4 seconds. To store a new value
set temperature (3) and press one of the memory buttons. An acoustic signal
confirms the input.
5: LN
2
level indicator. Indication of the filling status of the Dewar. An acoustic
warning signal will sound if the Dewar is almost empty. Approx. 1 h working time is
left.
The acoustic signal can be switched off by touching the Dewar symbol (5) or the
displayed hint box (appears in the upper left corner on the screen).
Menu
6: LN
2
stop. Touch to switch on or off pump (e.g. for refilling the Dewar it may be
necessary to warm up the LN
2
hose until it is flexible enough to me moved).
7: One of four different command variables can be set. The temperature will be
controlled according the selected set point.
T Average = an average of specimen, sample and gas
Tk Knife
Ts Sample
Tg Gas
8: Temperature Unit: a choice of C, F and K is available. The selected unit will be
displayed on the main screen.