14
KEY LOCK FUNCTION
This unit is provided with the key lock function. When the key lock is ON, change of temperature setting
through the key pad is not available. The key lock is set in OFF at the factory.
Display Mode
Function
L 0
Key lock is OFF
Enable to change of temperature setting
L 1
Key lock is ON
Disable to change of temperature setting
Table 2 Procedure for key lock setting (change from key lock OFF to key lock ON)
Description of operation
Key
operated
Indication after operation
1
----
The current chamber temperature is
displayed.
2 Press digit shift key for 5 seconds.
The right digit is flashed.
3
Press numerical value shift key and
scroll the figure to 1.
When pressed, the figure of settable
digit increases.
4 Press set key.
SET
The key lock is set to ON.
The current chamber temperature is
displayed.
The key lock only works with the chamber temperature setting and the defrost key (DEF).
REMOTE ALARM TERMINAL
WARNING
Always disconnect the power supply cord before connecting an alarm device to the remote alarm
terminal.
The terminal of the remote alarm is installed at the upper side of the unit. The alarm is outputted from
this terminal. Contact capacity is DC 30 V, 2 A.
Contact output:
between COM. and N.O.
between COM. and N.C.
At
normal
Open
Close
At
abnormal
Close
Open
Note:
The buzzer is silenced by pressing buzzer stop key (BUZZER) on the control panel during alarm
condition. (A remote alarm is continuing the operation.)
The buzzer will be activated again after certain suspension if the alarm condition is continued.
The alarm is actuated when the power supply plug is disconnected from the outlet or the power switch is
OFF.
Use a twisted sealed wire for the connection.
Type UL2343, UL2448, UL2464, UL2552, UL 2623
Length: thirty meter max.
