Alarms & Safety Functions - Panasonic MDF-237 Operating Instructions Manual

ALARMS & SAFETY FUNCTIONS
This unit has the alarms and safety functions shown in Table 7, and also self diagnostic functions.
Table 7. Alarms and safety functions
Alarm & Safety
If the chamber temperature is higher
High temperature
than the temperature at which the
alarm
high temperature alarm is activated.
If the chamber temperature is lower
Low temperature
than the temperature at which the
alarm
low temperature alarm is activated.
In the case of power failure.
When power switch is turned OFF.
Power failure alarm
When the power to the unit is
disconnected.
When there is no key pressing in
Auto-return
each setting mode for 90 seconds.
Key lock When the key lock is "ON".
If the thermal sensor is disconnected.
Thermal sensor
abnormality
If the thermal sensor is short-circuited.
Battery switch When the battery switch is OFF at the
check time of alarm test.
When about 3 years has passed with
Battery check
power switch ON.
Note:
• The above power failure alarm is available when the battery switch is ON and the battery is charged.
If the battery switch is OFF or the battery is discharged, only the remote alarm is activated.
• The power failure alarm can be kept about 12 hours with the battery charged completely. 2-day
operation of the freezer is needed to charge the battery full.
• The chamber temperature is displayed for 5 seconds if the alarm buzzer stop key (BUZZER) is
depressed during the power failure alarm.
• The remote alarm is stopped by pressing alarm buzzer stop key (BUZZER) as the remote alarm is
operated in conjunction with the buzzer, except for the power failure alarm.
• After power failure, the operation is resumed with the condition before power failure since the
temperature setting and alarm temperature setting are memorized in a nonvolatile memory.
• The battery for power failure alarm is an article for consumption. It is recommended that the battery
will be replaced about every 3 years.
Situation
Alarm lamp is flashed.
Digital temperature
indicator is flashed.
Alarm lamp is flashed.
Digital temperature
indicator is flashed.
Alarm lamp is flashed.
Chamber temperature is
displayed.
Alarm lamp is flashed.
E01 and chamber temp.
are displayed alternately.
Alarm lamp is flashed.
E02 and chamber temp.
are displayed alternately.
E09 is flashed.
F-1 and chamber temp.
are displayed alternately.
18
Indication Buzzer
Intermittent tone with
15 minutes delay.
Intermittent tone with
15 minutes delay.
Intermittent tone
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Intermittent tone
Intermittent tone
Intermittent tone
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Safety operation
Remote alarm with 15
minutes delay.
Remote alarm with 15
minutes delay.
Remote alarm.
Finishing of each
setting mode.
Change of setting is
disable.
Remote alarm.
Continuous running.
Remote alarm.
Continuous running.
Remote alarm
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