25
ALARM FUNCTIONS
This unit has the alarm functions shown below.
Contact our sales representative or agent if the alarm status continues because there is a possibility of
any failure.
Alarms Situation Indication Alarm buzzer Remote alarm
High temp.
alarm
If the temperature of the upper
or lower sensor for temp.
display is higher than 6
o
C.
Alarm indicator blinks.
Displayed temp. blinks.
Intermittent tone Alarm status
Low temp.
alarm
If the temperature of the upper
or lower sensor for temp.
display is lower than 2
o
C.
Alarm indicator blinks.
Displayed temp. blinks.
Intermittent tone Alarm status
Power failure
alarm
At the power failure.
If the power supply cord is
unplugged.
When power switch is off.
Alarm indicator blinks.
Temperature display is
off.
Intermittent tone Alarm status.
Door alarm When the outer door is open.
Door alarm indicator
lights.
Intermittent tone with
2 minutes delay.
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The alarm status of remote alarm terminal is canceled by pressing the alarm buzzer stop key
(BUZZER) since the remote alarm terminal is operated in conjunction with alarm buzzer. However, the
alarm status of remote alarm terminal is not canceled by pressing the alarm buzzer stop key (BUZZER)
when the unit is under power failure alarm.
This unit is provided with the alarm buzzer recovery function. The alarm buzzer will operate again
after 30 minutes if the alarm status continues even if the alarm buzzer was silenced by pressing the alarm
buzzer stop key (BUZZER).
The power failure alarm is kept for approximately 24 hours (when the battery is charged fully). 2-day
operation of blood bank refrigerator is necessary to charge the fully discharged battery to full level. A
remote alarm keeps alarm status even if the battery is discharged.
The blood bank refrigerator resumes the operation with 4
o
C setting at the recovery from the power
failure.
Checking of alarm operation
The alarm operation can be checked by the procedure below.
1. Press the alarm test key (ALARM TEST).
2. The alarm indicator blinks, the alarm buzzer sounds intermittently, and the remote alarm is in alarm
status. This is kept for 90 seconds and finished automatically.
During the 90 seconds, the alarm buzzer cannot be silenced by pressing the alarm buzzer stop key
(BUZZER).
3. The alarm operation can be canceled by pressing the alarm test key (ALARM TEST) again during the
90 seconds.
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