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UF V (E3) 10/2020 Page 25/119
(8)
(9)
(10)
(11)
Figure 12: Connection panel (I) on the chamber rear
(8) Ethernet interface (Chap. 22.1)
(9) Connection socket for zero-voltage relay alarm contact (chap. 14.5)
(10) Connection socket for analog output 4-20 mA (option, chap. 22.3)
(11) Connection socket for the electrical connection of the CO
2
emergency cooling (option, chap. 21)
2.5 Doors
2.5.1 Outer door
The outer door must be closed while the chamber is operating normally in order to ensure stable conditions
in the inner chamber.
Delay time for the door open alarm:
After closing the outer door, the door open alarm is switched off for a programmable delay
time (factory setting: 1 minute).
2.5.2 Compartment doors
The freezer interior is divided into in 4 compartments, which are isolated against the surrounding with two
doors. That permits bringing in or removing the samples of an individual compartment without remarkably
affect temperature in the other compartments.
The compartment doors remain closed by magnetism when opening the outer door without need for closing
them mechanically.
Open the inner doors as shortly as possible to avoid a temperature rise inside the freezer. The maximum
angle of aperture is 100°.
For the additional thermal insulation and sealing of the interior compartment doors, you can order the option
“compartment doors, insulated”. For this purpose, the compartment doors are filled with foam and thus
additionally thermally insulated.
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