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OPERATING INSTRUCTIONS
Temperature setting
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 -70
o
C.
Note: The unit is set at the factory that the chamber temperature is -85C.
Table 1. Basic operation sequence (Example: Chamber temperature -70
o
C)
Description of operation Key operated Indication after operation
1 Turn on the power switch. -----
The current chamber temperature is
displayed.
1
Press mode change key when
changing the set temperature
during operation.
PV/SV The second digits blinks.
2
Set the second digit to 7 with the
numerical value shift key.
When pressed, the figure of settable
digit changes.
3
By pressing the digit shift key, set
the first digit.
The first digit blinks.
4
Set the first digit to 0 with the
numerical value shift key.
When pressed, the figure of settable
digit changes.
5 Press enter key. ENT
Set temperature is memorized and
the current chamber temperature
is displayed.
Note: The temperature set mode returns to the temperature display mode automatically when 90
seconds has passed without any key operation.
Remote alarm terminal
The terminal of the remote alarm is located at rear of the machinery room, upper side of the electric box.
The signal is contact output. The recommended contact capacity is between 2 A (DC 30V) .
Contact output: : normal close connect with N.O. and COM.
Consult our dealer or our office for installation of the remote alarm.