7404-10 Operations Manual
Rev A 7/25/2014
Page 52 of 82
SECTION 8 – ALARMS
Alarm System Overview
The incubator control system is equipped with an alarm system that constantly monitors
temperature, CO2 and humidity (on controlled humidified models) to ensure the user is
notified if the cabinet goes into an alarm condition. Notification occurs via an alarm pop-
up window and a buzzer. Each alarm condition has been factory programmed to
minimize nuisance alarms while maximizing warning time. There is a 2 hour time delay
at start-up and set point changes. To avoid nuisance alarms after a routine door
opening, an alarm condition must be present for 15 minutes before the operator is
alerted. If the optional remote alarm contacts are present, in an alarm condition, the dry
contacts will change state.
The following alarm messages could be displayed:
Chamber temperature is higher than set-point temperature
Chamber temperature is lower than set-point temperature
Chamber CO2 is higher than set-point CO2
Chamber CO2 is lower than set-point CO2
Temperature sensor error
In the event an alarm occurs, the alarm indicator will appear on the status bar and an
audible alarm will occur. The flashing (Alarm) icon will appear on the status bar and the
alarm pop-up window will automatically appear.
The flashing
(Alarm) icon will appear on the status bar.
Alarm icon
Audible speaker