MANUALP/4000_SERVICE_0712 July2012
16
HEAT
Indicates when power is being supplied to the heating element. This will remain
steady when large changes in conditions are occurring eg warming up or if the
door has been opened. When the enclosure is at the temperature set point, the
LED will pulse.
INJECT
Indicates when CO
2
is being injected. This will usually be accompanied by an
audible click of the CO
2
inject solenoid.
DOOR
Indicates that the outer door is open. If the door is opened a door switch is
activated, the internal fan, heater and CO
2
solenoid are disabled until the door is
closed. Leaving the outer door ajar for prolonged periods will affect the internal
control of the cabinet atmosphere.
ALARM
Indicates when an ALARM condition has been triggered. The alarm will be
accompanied by a beep and will display the Alarm Code in the Temperature
Display.
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