Eppendorf S Series 48S CO2 Incubator - Manual (Page 20)

20
CO48S-0050 Š Galaxy S Series 48 S Personal Size CO
2
Incubator User’s Guide
To set the CO
2
level:
1. Press the programming (¤) key.
2. Press the up (S) or down (T) key until the desired value appears in the righthand
display.
3. Press the
enter key to save the setpoint.
If at any time you wish to change the CO
2
level without adjusting the Temperature
setpoint, press the Programming (¤) key twice to work in the CO
2
display.
NOTE:
CO
2
gas will NOT be injected until the incubator reaches its temperature
setpoint. Allow the incubator to stabilize at the selected setpoints for at
least 2 hours before continuing.
3.5 Referencing
CO
2
with AutoZero
The purpose of the AutoZero system is to reference the CO
2
sensor to an atmospheric
CO
2
level of 0.05%. Over a period of time, the sensor baseline may drift, causing an
inaccuracy in the CO
2
level at the programmed value.
We recommend that you AutoZero the CO
2
system:
ƒ Prior to using the incubator for the first time
ƒ Once a month when your incubator is operating, to ensure that the CO
2 level is as
accurate as possible
ƒ After the incubator has been in storage (or transit) for a while.
To perform the AutoZero:
1. If you have not already done so, set the CO
2
level (see Section 3.4). There should be
an audible click when the programmed level is entered: this is the CO
2
valve
opening.
2. Press the ¤ and
enter
keys simultaneously.
NOTE:
There is a magnetic switch above the door, and a magnet mounted in the
door, to switch off the CO
2
valve when the door is opened.
3. The door (and inner doors, if present) must be opened and closed according to the
displayed instructions, after which the process is completely automatic.
4. Open the door for 60 seconds to completely degas the chamber. A countdown is
shown on the display.