NEW BRUNSWICK SCIENTIFIC CO-150, Руководство по эксплуатации

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M1310-0050 Model CO-150 CO
2
Incubator User’s Guide
2. Press the Up (
▲
) or Down (
▼
) key until the desired value appears in the left
display.
3. Press the Enter (
◄
) key to save the setpoint.
4. Now you can set the CO
2
level.
To set the CO
2
level:
1. Press the programming (
∗
) key.
2. Press the up (
▲
) or down (
▼
) key until the desired value appears in the right
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:
Allow the incubator to stabilize at the setpoints selected 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. When you put your incubator
into operation, we recommend that you AutoZero the CO
2
system once a month to
ensure that the CO
2
level is as accurate as possible.
After the incubator has been in storage (or transit) for a while, the AutoZero should
also be checked, which is why you should run an AutoZero prior to using the
incubator for the first time.
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.
NOTE:
There is a magnetic switch above the outer door, and a magnet
mounted in the door that switches off the CO
2
valve when the outer door
is opened.