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OPERATING INSTRUCTIONS
I Alarm, Safety function and Self diagnostic function
This unit has the alarm and safety functions shown
in
Table 3 and Table
4,
and also a self diagnostic function.
Table 3
Alarm and safety functions (MPR-311
H))
Alarm
or
safety
Situation
Indication Buzzer
Safety operation
High temp.
alarm
The
chamber temp. is High temp. alarm lamp is Pulse tone
~----
more than about 20°C. lit.
Low temp. alarm
The chamber temp. is less
Defrost lamp is lit. Pulse tone
-----
than about
_2°C.
Note: The alarm buzzer can be canceled
by
turning the buzzer switch to OFF.
Table
4
Alarm and safety functions (MPR-311 D(H), MPR-311 DR(H))
Alarm
or
safety
Situation
Indication Buzzer Safety operation
High temp.
alarm
The
chamber temp. is
Temperature
display is Pulse tone
more than
15°C.
fiashed.
-----
The
chamber temp. is
High temp.
alarm lamp is Pulse tone
more than about
20°C. lit.
Low temp. alarm
The
chamber temp. is less All digits on the temp.
Pulse tone
than
DOC.
display are flashed.
-----
The
chamber temp. is less
Defrost lamp is lit. Pulse tone
than about
_2°C.
Door alarm
When
the door is opened.
Door check
lamp is lit.
Pulse
tone after
----
delay
of
30
seconds
Thermal sensor
If the thermal sensor is
E1
and chamber temp. is
Pulse tone
Running with
abnormality
disconnected.
displayed alternately.
defrost sensor
If the thermal sensor is
E2 and chamber temp. is
Pulse tone
Running with
short circuited.
displayed alternately.
defrost sensor
If
the defrost sensor is
E3 and chamber temp. is
-----
---
disconnected.
displayed alternately.
If
the defrost sensor is
E4 and chamber temp. is
-----
----
short circuited.·
displayed alternately.
Note: The alarm buzzer can be canceled by turning the buzzer switch to OFF.
13