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CB-S / CB-S-UL (E7) 06/2020 page 23/119
2.4 Chamber doors
The outer chamber door is equipped with a heater on its inner side. The door must be closed while the
chamber is operating normally in order to ensure stable climatic conditions in the inner chamber.
An additional glass door enables viewing of the samples without disturbing the temperature in the interior
and contaminating the samples sealing the interior of the chamber.
When the outer door is open, the CO
2
intake valve automatically closes.
Delay time for the temperature and CO
2
tolerance range alarm :
After closing the outer door, the tolerance range alarm is turned off for a programmable delay
time. This prevents alarms being constantly triggered during the unstable operating phase
after opening the outer door.
2.5 Instrument panel
RD4 controller display
USB interface
Figure 9: Instrument panel with RD4 controller and USB interface
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