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USE AND MAINTENANCE MANUAL
Rev. 02-18
PLUS
100
AB
Program PR2: temperature-based freezing
Product freezing program. Freezing ends when the product core temperature reaches At2.
A maximum safety time is set on parameter Ab2. When freezing is over the controller
automatically goes to storage mode with the ST1 setting. The compressor works
continuously.
Program PR3: temperature-based cooling and freezing
Program for product cooling and freezing by positive temperature. When room
temperature drops below the STS setting the switch from cooling to freezing takes place.
Freezing continues until the end of the cycle even in the event of a power cut or a rise in
temperature. Freezing ends when the product core reaches temperature At3. A maximum
safety time is set on Ab3. At the end of freezing the control automatically goes to storage
mode as per the ST3 setting. ST3 also has the function of controlling the compressor
during cooling (the compressor stops if ambient temperature reaches ST3-r1). The
compressor is reactivated on reaching ST3. During freezing the compressor works
continuously.
VARIABLES
MEANING
VALUES
DEFAULT
At2
End of freezing temperature PR2
-45 +45 °C
-20°C
ST2
Storage temperature setting at end of freezing
The compressor does not stop for the entire duration of
freezing.
-45 +45 °C
-20°C
Ab2
Maximum safety duration of PR2 freezing
0:10:00…10:00:00
4:00:00
VARIABLES
MEANING
VALUES
DEFAULT
At3
End of PR3 Cooling/Freezing temperature
-45 +45 °C
-20°C
ST3
Storage temperature at end of cooling-freezing / lower
compressor stop limit (- differential r1).
The compressor stops during cooling if ambient
temperature drops below ST3-r1. The fans continue to run.
-45 +45 °C
-20°C
Ab3
Maximum safety duration of PR3 cooling-freezing
0:10:00…10:00:00
0:30:00
CHAP. 5
– Parameter programming
