Key Lock Operation; Remote Alarm Terminal - Sanyo MDF-U730 Service Manual

OPERATING INSTRUCTIONS
Key lock operation
This unit incorporates a key lock feature which can inhibit the tampering using the keys on the control
panel.
The key lock is set to OFF at the factory.
Display Mode Function
Loo Key lock OFF Temperature change enabled
Loi Key lock ON Temperature change disabled
Table 3 Key lock setup procedure (Example: Key lock OFF = Key lock ON)
Operation Key operated Indication after operation
The current refrigerator or freezer
temperature is displayed.
Press and hold the digit shift The first digit of the temperature T 77
key for about 5 seconds. >> display blinks. AB)
Set the first digit to 1 with 4 Pressing the key shifts up the figure HEH
the numerical value shift key. of the digit. o
Key lock is set to ON and the current
Press the set key. SET refrigerator or freezer temperature is
displayed.
Note:
Key lock can be set any time when the current refrigerator or freezer temperature is displayed.
Remote alarm terminal
The terminal of the remote alarm is installed at the top .
of the unit. The alarm is outputted from this terminal
between terminal 1 and terminal 2.
Contact capacity is DC 30V, 2 A.
Contact output: At normal condition "Open"
At abnormal condition "Close"
Note:
The alarm is actuated when the power cord is
disconnected from the outlet or the power switch is
OFF.
LI
= ©
El
3
A
©
T1
B