Defrost, Phase cut control (p45 = 1) – EVCO CT1SA0040101 User Manual
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Stop leavening specifications
CT1SA0040101
Vers. 1.11
25/36
23.2. Phase cut control (P45 = 1)
Refer to the following graphic regarding the fans.
Setpoint+zmf
Setpoint
Ventilazione
Vel Max
Vel Min
Temperatura Cella
Setpoint-zmc
tempo
Where:
Setpoint
is the preset adjustment setpoint for the ongoing phase
zmf
is the cold dead zone for the ongoing phase
zmc
is the hot dead zone for the ongoing phase
Based on the temperature in the cell regarding the setpoint, fans will be kept at the maximum speed or will be
proportionally adjusted according to the difference between the cell temperature and the setpoint.
The minimum speed (equal for all phases) is configurable by the parameter P57.
The maximum speed is configurable for each phase (for manual or automatic cycle) by the parameters P79, P80, P81,
P82, P83, P84, P85, P86.
If a dehumidification cycle starts during the fan proportional adjustment, the minimum speed will no longer be
determined by parameter P57 but by parameter P59 and the fans will remain on even if the door is opened.
24. DEFROST
Defrost is active only during the stop and preservation phases of the automatic cycle and during the refrigeration phase
of the manual cycle. It can also be switched on by selecting its own menu. Both the automatic and the manual defrost will
only occur if the evaporator probe temperature is lower than parameter P60.
The defrost mode is subject to parameter P73:
If parameter P73 = 0, during the defrost output K2 will be switched on.
If parameter P73 = 1, during the defrost both output K1 and output K2 will be switched on.
Fans are activated according to the value of parameter P64.
The defrost cycle, if automatic, is repeated regularly (parameter P61), and each defrost cycle may finish as follows:
•
as soon as the parameter P62 time elapses