5.4.11 Emergency operation ..............................................................................................................................31
5.5 Defrosting ..............................................................................................................................................31
5.5.1 Typesofdefrosting–anoverview...........................................................................................................31
5.5.2 Defrost in general ....................................................................................................................................32
5.5.3 Discharge gas defrosting (hot gas defrosting).........................................................................................38
5.5.4 Brine defrosting .......................................................................................................................................39
5.5.5 Master/slavemode–defrostsynchronisationviaCANbus....................................................................40
5.5.6 Master/slavemode–defrostsynchronisationviawiring.........................................................................43
5.5.6.1 Master/slave mode for the synchronisation of the zones of a single controller.......................................44
5.5.6.2 Master-slave mode for the synchronisation of multiple controllers .........................................................45
5.5.6.3 Necessary settings for the master / slave mode .....................................................................................46
5.5.6.4 Special features and constraints .............................................................................................................46
5.5.7 Defrost sequence (DS) via CAN bus.......................................................................................................48
5.5.8 Fan control with case and cold-room controllers.....................................................................................52
5.5.8.1 Fan control on multidecks .......................................................................................................................52
5.5.8.2 Fan control - Controller type UA 131.......................................................................................................52
5.5.8.3 Fan control - controller type UA 131 LS with enhanced fan control ........................................................53
5.5.8.4 Fan control - Controller type UA 131 DD.................................................................................................57
5.5.8.5 Fan control - Controller type UA 141 E....................................................................................................57
5.5.9 Fan control with cold-room controllers .................................................................................................... 58
5.5.9.1 Cold-room with defrost heater - Controller type UR 141 TK (LT) only.....................................................59
5.5.9.2 Cold-room without defrost heater - Controller type UR 141 NK (NT) only ..............................................60
5.5.9.3 Heating circuit (controller type UR 141 TK (LT) or NK (NT) only) ...........................................................60
5.6 Humidification - Controller type UA 141 only .....................................................................................61
5.7 Antisweat heaters..................................................................................................................................61
5.8 Automatic on/off control.......................................................................................................................64
5.9 Door contact .......................................................................................................................................... 65
5.10 Manual shutdown ..................................................................................................................................66
5.11 Registration of external alarms (e.g. CO2 alarm)...............................................................................66
5.12 Emergency power operation ................................................................................................................ 67
5.13 Setpoint toggle (day / night operation) ...............................................................................................68
5.14 Light control ..........................................................................................................................................69
5.15 Refrigeration point disabling ...............................................................................................................69
5.16 Forced cooling.......................................................................................................................................69
5.17 Operating data archiving ......................................................................................................................70
5.17.1 Temperature recording ............................................................................................................................70
5.17.2 Temperature recording to EU Regulation 37/2005..................................................................................71
5.17.3 Recording of messages and alarms........................................................................................................71
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