GALILEI LIBRA 70, Original Instructions Manual

Page: 45 / 52

j Cod. 80000370 – 22.08.2012
Special Functions
Enable / disable the keypad
Used to prevent the set point and the other working parameters from being changed when the equipment
is located in a place accessible to the public.
In order to activate the keyboard lock, keep pressed simultaneously the UP + DOWN buttons for a few
seconds, until the blinking message “PoF” (keyboard lock) is displayed. The keyboard is now locked, and the
only functions available are the displaying of Set-Point temperature and the Min. e Max temperatures
recorded. Any possible change of parameters, as well as the activation of any function, are disabled.
In this status, by pressing a button of the keyboard for more than 3 sec., the message “PoF” is displayed
(keyboard locked). In order to enable the keyboard, keep pressed again the
UP + DOWN buttons for a few
seconds, until the blinking message “PoN” (keyboard unlocked) is displayed.
Duty Setting
The Duty Setting mode is a safety function that in case of sensor fault (typically the environment sensor P1)
starts the compressor at a set time intervals.
If a sensor alarm occurs (message “P1” on the display), the duty setting function ensures the operation of
the compressor until the fault is resolved. By such occurrence the compressor, not being able to be
operated according to the temperature detected by the sensors P1, works cyclically with an assigned ON
time of 15 minutes (parameter Con=15), and an Off time of 15 minutes as well (Parameter CoF=15).
By such occurrences, the sensor P1 is likely to be replaced by a new one. Let the equipment to be
checked by the service personnel as soon as possible.