Memmert ICH 256 Climate Chambers (Generation 2003) - Manual (Page 46)

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Operation and Control
Active humidity control Active humidity control
The active humidity control guarantees that setpoint humidity is quickly reached, without the
use of water trays.
In the heating up phase, the humidity controller is initially deactivated. Approx. 5 minutes
after the setpoint temperature is reached, the humidification and dehumidification control
starts working. The setpoint can be set from 10 to 80 % rh. The humidity setpoint can also
be adjusted during the transient state. For humidification, water is let into the chamber via a
dosing pump. To avoid the formation of germs, the steam is first heated to approx. 140 °C.
Dehumidification takes place through the supply of dry air via a sterile filter.
If no humidity is required in the chamber, the humidity control can be deactivated by
setting to OFF.
5.12 Ending operation
1. Switch off appliance. To do this, press the
main switch on the operating panel so
that it clicks into the appliance ( Fig. 21 ).
2. For models with CO
2
supply: Close the
valve on the gas bottle.
3. Open the door
4. Remove the chamber load.
5. Check for condensation water in the
interior. Wipe it up.
6. Empty the water tank, if the cooled incu-
bator will not be used for several days.
Fig. 21 Switch off cooled incubator