Alarms & Safety Functions - Panasonic MDF-U334 Series Operating Instructions Manual

ALARMS & SAFETY FUNCTIONS
This unit has the alarms and safety functions shown in Table 6, and also self diagnostic functions.
Table 6 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".
Battery switch When battery switch is OFF at the
check time of alarm test.
If the thermal sensor is
disconnected.
Thermal sensor
Abnormality
If the thermal sensor is
short-circuited.
If the ambient temperature sensor is
disconnected.
Ambient sensor
abnormality
If the ambient temperature sensor is
short-circuited.
If the compressor protection
Compressor temperature sensor is disconnected.
protection sensor
If the compressor protection
abnormality
temperature sensor is short
circuited.
In the case of failure of compressor
cooling fan motor.
Compressor temp. In the case of abnormal high temp.
Abnormality due to the dust on the condenser.
In the case of abnormal high
ambient temperature.
When about three years has passed
Battery check
with power switch ON.
When about six years has passed
Fan motor check
with power switch ON.
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 twelve 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 five seconds if the alarm buzzer stop key (BUZZER) is
depressed during the power failure alarm. At the same time, the alarm buzzer stops.
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 following directions are the information of the part replacement (it is recommendation). This is not
a trouble.
a) The battery for power failure alarm is an article for consumption. It is recommended that the battery
will be replaced about every three years. Contact our sales representative or agent at the time of
replacement of the battery for recycling.
b) Fan motors are expendable supplies. Replace it for about every six years. Contact our sales
representative or agent at the time of replacement of the fan motor.
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.
E09 is flashed.
Alarm lamp is flashed.
E01 and chamber temp.
are displayed alternately.
Alarm lamp is flashed.
E02 and chamber temp.
are displayed alternately.
Alarm lamp is flashed.
E03 and chamber temp.
are displayed alternately.
Alarm lamp is flashed.
E04 and chamber temp
are displayed alternately.
Alarm lamp is flashed.
E05 and chamber temp.
Are displayed alternately.
Alarm lamp is flashed.
E06 and chamber temp.
Are displayed alternately.
E10 and chamber temp. are
displayed alternately.
_F1 and chamber temp.
are displayed alternately.
_F2 and chamber temp.
are displayed alternately.
Indication
Intermittent tone with
15 minutes delay.
Intermittent tone with
15 minutes delay.
Intermittent tone
-----
Intermittent tone
Intermittent tone
Intermittent tone
Intermittent tone
Intermittent tone
Intermittent tone
Intermittent tone
-----
-----
18
Buzzer 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.
Remote alarm.
Continuous running.
Remote alarm.
Continuous running.
Remote alarm.
Remote alarm.
Remote alarm.
Normal operation.
Remote alarm.
Compressor stops
running when the temp
reaches about 80
Information only
Information only
o
C.