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Thermo Scientific Revco
8.5 Recording Excursions and Resetting Alarms
8.5.1 Automatic Incident Monitor
The Automatic Incident Monitor records excursions, that is
extreme warm and cold temperature values.
You can view excursions by simultaneously pressing the Cabinet
Temperature and Warm Alarm Setpoint pads for high excursion,
and the Cabinet Temperature and Cold Alarm Setpoint pads for
low excursion.
When alarms are activated because of
IMPORTANT NOTE:
temperature failure, it is advisable to view and record
excursions (extreme high and low temperatures) before
resetting the alarms. Alarm reset has the effect of
resetting excursion values to the current cabinet
temperature.
8.5.2 Alarm Reset
The alarm reset feature, activated by pressing the Alarm Reset
pad, ensures user acknowledgment of the occurrence of certain
alarm conditions. This provides greater monitoring power by
alerting the user if an alarm condition has occurred during
periods when the freezer must be left unattended.
The alarm conditions that can be reset are:
Temperature Failure-Warm Alarm
•
Temperature Failure-Cold Alarm
•
Power Failure
•
Extreme Ambient Alert (Revco Ultima
•
Life Guard Alert (Revco Ultima
•
Clean Filter
•
During any of these alarm conditions, the corresponding
indicator will flash quickly. If the alarm condition then
disappears, the flash rate will decrease. The indicator will then
remain flashing at this rate, unless the condition reoccurs, until
the Alarm Reset button is pressed. Once the Alarm Reset button
has been pressed, the indicator will no longer be lit.
The alarm reset function does not affect the status of remote
alarms.
In the case of Temperature Failure-Warm Alarm And
Temperature Failure-Cold Alarm, if these conditions have
occurred but are now within the given limits, the two indicators
will alternately flash (180° out of phase).
Once the Alarm Reset button is pressed, the extreme temperature
value is reset to the current cabinet temperature.
Upright Freezers
PLUS
only)
PLUS
only)
PLUS
8.6 Alarm Test
To test the warm alarm, complete the following steps:
1. Press and hold the Alarm Test pad. The digital temperature
display indicates rising temperature. When the temperature
reaches the warm alarm value, the audible and visual alarms
alarms will be activated, as well as remote alarms, but
excursions (extreme temperatures) will not be logged.
The temperature of the refrigerated space does not
Note:
change during this procedure.
2. Release the Alarm Test pad. The display returns to cabinet
temperature.
Installation and Operation
6
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