Key Lock Function; Remote Alarm Terminal - Panasonic MDF-U731 Series Operating Instructions Manual

KEY LOCK FUNCTION

This unit is provided with the key lock function. When the key lock is ON, change of the setting through
the key pad is not available. The key lock is set in OFF at the factory.
Display
L o 0
L o 1
Table 2 Procedure for key lock setting (change from key lock OFF to key lock ON)
Description of operation
1
2 Press digit shift key for 5 seconds.
Press numerical value shift key and
3
scroll the figure to 1.
4 Press set key.
The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing the set key (SET) is not memorized.
The key lock only works with the chamber temperature setting and the defrost key (DEF).
A key lock function becomes on when it is changed to Lo1 with a process 3.

REMOTE ALARM TERMINAL

WARNING
Always turn off the power switch and 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 lower left side of the unit. The alarm is outputted
from this terminal. Contact capacity is DC 30 V, 2 A.
At normal
At abnormal
Note:
The alarm status of remote alarm terminal and audible alarm are cancelled by pressing the alarm buzzer
stop key (BUZZER) since the remote alarm is operated in conjunction with alarm buzzer (except for
power failure alarm status). The visual alarm will remain active until the alarm condition is rectified.
Mode
Key lock is OFF
Key lock is ON
Key operated
between COM. and N.O.
Open
Close
Function
Enable to change of temperature setting
Disable to change of temperature setting
Indication after operation
The current chamber temperature is
----
displayed.
The first digit is displayed.
When pressed, the figure of settable
digit changes.
The key lock is set to ON.
SET The current chamber temperature is
displayed.
between COM. and N.C.
Close
Open
14