Eppendorf R Series 48R CO2 Incubator - Manual (Page 51)

51
New Brunswick Scientific User’s Guide
The OXYGEN SENSOR-REF TO ATMOSPHERE procedure has three possible outcomes.
The first is that the procedure was completely successful, and no further action need be
taken until the following month’s test. The second and third outcomes are presented in
detail in Sections 8.5.5 (Replace Sensor Soon) and 8.5.6 (Replace Sensor Now).
See Section 8.5.7 for instructions on removing and replacing the sensor.
8.5.5 Replace Sensor Soon
If the referencing procedure was successful but the sensor is nearing the end of
its working life, the following message will appear in the display:
O
2
REFERENCE OK BUT SENSOR REQUIRES REPLACEMENT SHORTLY
PRESS ENTER TO PROCEED
When you press the
ENTER function key, the message will change to this:
O
2
SENSOR
THE RESULT OF THE O
2
REFERENCE PROCESS SHOWS THAT THE
SIGNAL FROM THE O
2
SENSOR HAS REDUCED INDICATING IT IS
APPROACHING THE END OF ITS LIFE.
REPEAT THE REFERENCE PROCEDURE TO CONFIRM THIS RESULT.
PRESS ENTER TO PROCEED.
Press the
ENTER function key.
8.5.6 Replace Sensor Now
If the referencing procedure failed, Oxygen Control will be disabled—but the
incubator will function perfectly in all other ways—until a new sensor is
installed and corrected references to the atmosphere. The following message
will appear in the display:
O
2
REFERENCE FAILED
PRESS ENTER TO PROCEED
When you press the
ENTER function key, the message will change to this:
O
2
SENSOR
THE RESULT OF THE O
2
REFERENCE PROCESS SHOWS THAT THE
SIGNAL FROM THE O
2
SENSOR HAS REDUCED BELOW AN
ACCEPTABLE LEVEL AND HAS REACHED THE END OF ITS LIFE.