13
7425MUM651
Model: QBS
- Use and Maintenance Manual
Rev. 02
5
E
LECTRONIC
C
ONTROLLER
–
QBS
STANDARD
The QBS 001÷002 electronic controller:
•
Displays the temperature of the water exiting the water chiller;
•
Enables the required temperature of the chilled water to be set (set point);
•
Enables compressor activation and deactivation (standby);
•
Controls on/off compressor operation depending on the temperature of the water measured with
the set point and upper differential (3°C//3K//5,4°F);
•
Guarantees minimum compressor on/off times to maintain its integrity;
•
Signals any faults in the temperature probe.
5.1
M
AIN FUNCTIONS OF THE ELECTRONIC CONTROLLER BUTTONS AND MEANINGS
OF THE ICONS
Button
Function
On/off button
Exit procedure
Setting setpoint
Access the menu
Down key
Up key
Display/Led Function
Indicates the state of compressor:
On: compressor ON
Off: compressor OFF
Flashing: setting setpoint mode or compressor protection
Indicates the state of the fans:
On: fan ON
Off: fan OFF
Flashing: fan stopping
Auxliary led
Energy saving on
°Celsius unit
°Fahrenheit unit
Indicates the state of the chiller:
On: chiller OFF
Off: chiller ON