Sanyo MIR-153 Instruction Manual page 14

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D Security Function
Not only is there an alarm to signify that the
cabinet interior temperature is experiencing
abnormality, but there is also a security system
to prevent such a situation from occurring.
B Defrosting (DE F ROST)
When the cabinet interior temperature is set at
less than 5°C, the cooler frosts up and defrosting
will be required. Defrost should be started man-
ually if frost can be seen through the look-in
window.
O Excessively high temperature
prevention knob (HIGH)
O Alarm indication lamp
Uarm setting key
O Program setting key
Table 10
Security categories
Independent excessively
high temperature preven-
tion circuit
Independent excessively
low temperature
prevention circuitry
Temperature fuse
Memory backup
(about 5 hours)
Auto PV
O Excessively low temperature
prevention knob (LOW)
The unit will defrost automatically, and normal
operation will recommence 15-30 minutes later.
While the unit is defrosting, the defrosting lamp
will be lit.
Make sure that the cabinet interior temperature
does not exceed the set limits when defrosting.
During a programmed operation, where the
temperature is set at below 5°C for long periods
of time, this operation cannot be conducted
owing to frost.
In some cases, defrosting will not be conducted
when the interior temperature does not fall
below 5°C. The melt water will evaporate auto-
matically from the drain.
Conditions
When cabinet interior
HeaterOFF
temperature rises above Inner cabinet fan OFF
the excessively high
temperature setting
When cabinet interior Compressor OFF
temperature falls below
excessively low temper-
ature prevention setting
70°C (MIR-153, 253) Blowout heaterOFF
76°C (MIR-553)
Blowout heaterOFF
Power failure or
Operation continues
accidental disconnection
with memory backup
of power source
When any key is not Setting mode ends
pressed for more than automatically and
one minute in any of operation returns to
the setting modes constant cabinet interior
temperature
-13-
©Program operating
start/stop key
O Entry key
OFigure shift key
©Digit shift key
Operation
© Fluorescent lamp
switch
© Buzzer key