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CB-S / CB-S-UL (E7) 06/2020 page 28/119
4. Installation and connections
4.1 Shelves
You can put the shelves in different positions at the line of channel beads in the inner chamber. Hold the
shelf straight and then insert it so it will go smoothly inside the chamber.
Permitted shelf loads:
Maximum load on one single shelf: 10 kg / 22 lb
Maximum total load on all shelves: 40 kg / 88 lb
4.2 CO
2
sensor
4.2.1 Connecting the CO
2
sensor
Turn off the chamber. Open the door of the inner chamber and plug the CO
2
sensor (4) into the perma-
nently installed holding tube located in the upper part of the rear of the inner chamber.
Figure 10: Plugged-in CO
2
sensor (right) and gas mixing head for CO
2
The sensor must click in correctly and sit tightly in the connection socket.
NOTICE
Danger of damage to the CO
2
sensor by connecting or removing it during operation.
Damage to the CO
2
sensor.
Connect or remove the CO
2
sensor only with the chamber turned off.
4.2.2 General notes
Connect or remove the CO
2
sensor without rotating and only when the incubator is turned off. Remove
the CO
2
sensor before removing or replacing its filter cap. The PTFE filter of the CO
2
sensor prevents dirt
and humidity from intruding into the measuring cell. It is available as a spare part. Replace it whenever it
is damaged or soiled.
The accuracy of the indicated values of CO
2
depends on the ambient air pressure (approx.
0.08 vol.-% per 10 mbar / 0.15 psi). In order to compensate this effect when measuring the
CO
2
concentration, the altitude of the installation site above sea level can be entered into the
controller (chap. 6.4).
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