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CB-S / CB-S-UL (E7) 06/2020 page 37/119
5.2 Performance during and after power failures and shut down
In the event of power failure, all controller functions are shut down. The gas inlet valves are closed so that
no gas can escape into the ambient air. The zero-voltage relay alarm output (13) (chap. 15.4.1) is
switched to alarm position indicating the alarm for the whole duration of the power failure.
After the power returns or after turning on the chamber, all functions return to the same status the cham-
ber had before power failure. The set-points are immediately resumed.
If the chamber was in sterilization mode, the process is cancelled and the chamber continues normal
operating mode with the original set points previously entered .
All settings and set point values remain in the memory during power failure after power off.
6. Start up
Check that the interior of the chamber is empty, including the trays and the water pan. If you do not know
what the chamber was last used for, for hygiene purposes you should clean and disinfect or sterilize the
interior (chap. 22).
WARNING: If customer should use a BINDER chamber running in non-supervised continu-
ous operation, we strongly recommend in case of inclusion of irrecoverable specimen or
samples to split such specimen or samples and store them in at least two chambers, if this is
feasible.
Warming chambers may release odors in the first few days after commissioning. This is not a quality de-
fect. To reduce odors quickly we recommend heating up the chamber to its nominal temperature for one
day and in a well-ventilated location.
6.1 Turning on the chamber
Open the CO
2
supply's pressure reducer valve and set a CO
2
primary pressure of 2.0 bar / 29 psi.
After connecting the supply lines, turn on the chamber by the main power switch (2). The lit pilot lamp
shows the chamber is ready for operation.
The controller shows normal display and controls the temperature and CO
2
to the last entered values.
After turning on the chamber for the first time, enter the altitude of the site above sea level into the con-
troller (chap. 6.4).
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