Operating Instructions - Sanyo MDF-1155 Instruction Manual

OPERATING INSTRUCTIONS

Control panel
Table 1 shows the basic operation method. Perform key operations in the sequence indicated in the
table. The example in the table is based on the assumption that the temperature is -145
Note: The unit is set at the factory that the temperature inside the unit is -150
Table 1. Basic operation sequence (Example: Internal temperature –145
Description of operation
1 Turn the power switch ON.
Set the desired temperature by
2
pressing digit and figure shift key.
3 Press entry key.
Note:
Although the value of the internal temperature setting can range from -100
temperature when there is no load is -152
When the desired temperature is set, this key should be pressed (SV side). The temperature setting can
be done by section 2 and 3 of Table 1.
Alarm, safety function, and self diagnostic function
This unit has the alarm and safety functions shown in Table 2, and also self diagnostic function.
Table 2 Alarm and safety functions
Kind of alarm at
safety
If the internal temperature deviates
Temperature alarm about 15
temperature.
Power failure alarm When the power fails.
When the condenser filter is
Filter check
clogged.
[MDF-1155ATN]
Automatic back-up If the internal temperature deviates
from the alarm temperature or more.
If the temperature sensor goes open
Thermal sensor circuit.
abnormality
If the temperature sensor goes short
circuit.
Key operated
----
ENT
o
C when the ambient temperature is +30
Situation
o
C higher than the setting ALARM lamp will be flashed.
ALARM lamp will be flashed.
Filter check lamp will be
flashed.
E1 will be displayed.
E2 will be displayed.
Indication after operation
Setting temperature is displayed and
Third digit will be flashing.
When pressed, the settable digit will
move.
When pressed, the figure of settable
Digit will increase.
Setting temperature will be memorized and present
temperature will be displayed.
o
C to -159
Indication
Intermittent tone (about
15 minutes later)
Intermittent tone
Intermittent tone
-----
13
o
C.
o
C.
o
C)
o
C, the guaranteed
o
C.
Buzzer Safety operation
Remote alarm will
be active.
(about 15 minutes
later)
Remote alarm will
be active.
----- Liquid N back-up
2
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