Kendro HERAcell 150, Operating Instructions Manual

Page: 27 / 251

CO
2
Incubator HERAcell ® 150 Operating Instructions
27
4. Description of the device
Optional 3-door gas tight screen:
Fig. 10: For devices that are equipped with the optional gas
tight screen [2], the contamination hazard is considerably lo-
wer and the recovery times of the incubation parameters
• work space temperature,
• CO
2
concentration,
• O
2
concentration,
• relative humidity.
Water reservoir:
Fig. 11: The water reservoir [1] is integral to the interior con-
tainer floor and inclines toward the rear. The water level is
monitored by a water level sensor [2] that issues an alarm
message at the display and an audible signal when the wa-
ter falls below the minimal level. The embossings [3] in the water
tray are used as indicators for the maximal level.
Heating system:
An air jacket heating is used for heating the work space. The
arrangement of the heating elements ensures that condensate
formation above the water reservoir is prevented as fast as
possible.
The outer door of the device is also heated. The heat radia-
ted onto the interior glass door/gas tight screen prevents con-
densate formation. The work space of the device always
remains visible, despite high humidity.
Gas humidification (only for O
2
control):
A hose [5] connects the gas humidification [6] to the device-
integral oxygen or nitrogen supply line [4]. The inflowing oxygen
or nitrogen is fed to the heated water. This ensures humidifi-
cation of the gases as they enter the work space and prevents
an undesired drop of the work space humidity.
Fig. 11
Water reservoir,
gas humidification