Eppendorf S Series 48S CO2 Incubator - Manual (Page 25)

25
New Brunswick Scientific User’s Guide
Figure 7: Chamber Alarm System Flow Chart
15 MINUTES
ALARM DELAY
TIMEOUT
COMPLETED
ARE TEMPERATURES AND CO2
LEVELS WITHIN +/- 0.1 OF SET
POINT?
CHANGE
PROGRAMMED
VALUES
OPEN INNER DOOR
DISARM ALARMS
CLOSE INNER
DOOR
15 MINUTES
ALARM DELAY
TIMEOUT STARTED
IS TEMPERATURE OR CO2 LEVEL
MORE THAN +/- 0.5 OUTSIDE
PROGRAMMED POINTS?
CANCEL ALARM BY
PRESSING ANY KEY
ALARMS
CANCELLED
VISUAL AND AUDIBLE
ALARMS CANCELLED,
MESSAGE LEFT ON SCREEN
CANCEL
MESSAGE BY
PRESSING ANY
KEY
NO
YES
YES
SWITCH ON
ARM ALARMS
VISIBLE AND AUDIBLE
ALARM - MESSAGE ON
SCREEN
HAVE CONDITIONS
RECOVERED TO
WITHIN +/- 0.1?
YES
NO
NO
3.8.1 Temperature Sensor System Alarms
There are four temperature sensors: two in the door and two in the chamber. If
any of these sensors should fail, the following message will appear:
°C FAIL
.
Because the incubator can no longer control temperature properly without the
failed sensor, the heating will switch off and the incubator will cool down to
room temperature.