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New Brunswick Scientific
User’s Guide
4.4.2
Temperature Alarm Delay
When the cabinet temperature is disturbed by opening the door, the temperature
fluctuation can inadvertently trigger a high temperature alarm. The
TEMPERATURE ALARM DELAY
, programmable from 5 to 180 minutes, helps
prevent false high temperature alarms by delaying the high temperature alarm
for a set period of time after the outer door is opened. If the freezer temperature
recovers to within the high and low temperature alarm settings during the set
delay period, no alarm will be triggered. If the freezer has not recovered within
the set delay period, an alarm will be triggered. The subsequent alarm can be
muted (
see Section 4.4.6 for details
).
This programmable feature does not affect low temperature alarms, nor will it
prevent an alarm in the advent of a temperature fluctuation that is not the result
of a door opening (for example, a power failure).
4.4.3
Door Open Alarm Delay
The
DOOR OPEN ALARM DELAY
, programmable from 1 to 10 minutes
provides the user with an audible warning that the outer door has not been
closed properly, or that the door is being held open for a prolonged period of
time. When the outer door is opened, a timer counts down the programmed
period of delay, after which the alarm is triggered if the door is still open.
4.4.4
Audible Alarm Mute
The
AUDIBLE ALARM MUTE
, programmable from 5 to 60 minutes, provides
the user with a means to delay the audible alarm from re-activating after an
audible alarm has been muted.
When an audible alarm is activated,
the alarm can be muted by pressing any
directional key when the main screen is displayed
. The audible alarm will
then be muted for the programmed delay period before reactivating.
If the alarm condition clears before the delay period is over, the audible alarm
will not re-activate and the delay countdown will be cancelled.
4.4.5
Alarm Socket Delay
The
ALARM SOCKET DELAY
, programmable from 5 to 180 minutes, allows
you to delay the activation of the alarm monitoring socket during a temperature
alarm.
