Version 2.02 15.05.2007
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3.23 Monitoring high pressure 23....................................................
3.24 CO2 cascade 24..............................................................
3.25 Monitoring low pressure 26.....................................................
3.26 Monitoring compressor starts 26................................................
3.27 High-pressure control / Condenser control 27.....................................
3.27.1 Setting parameter for HP transducer characteristic 27..............................
3.27.2 Neutral zone 27...............................................................
3.27.3 Control algorithm 28...........................................................
3.27.4 Control algorithm with step controller 28..........................................
3.27.5 Calculating setpoint with step controller 29........................................
3.27.6 Condenser fan control times with step controller 29................................
3.27.7 Control algorithm with continuous control 31......................................
3.27.8 Calculating setpoint with continuous control 32....................................
3.27.8.1 Control algorithm with parallel combined controller 33..............................
3.27.8.2 Control algorithm for staged combined controller 35................................
3.27.9 Heat recovery mode 37........................................................
3.28 HP setpoint increase 38........................................................
3.29 Fan protection / HP base load rotation 38........................................
3.30 Monitoring condenser fan motors 39.............................................
3.31 Starting characteristics 40......................................................
3.31.1 First start 40..................................................................
3.31.2 Restart 40....................................................................
3.32 Monitoring refrigerant level 40..................................................
3.33 Monitoring burst disk 40........................................................
3.34 Monitoring external alarm / speed adjuster 41.....................................
3.35 Disabling refrigeration points 41.................................................
3.36 Discharge gas defrosting 41....................................................
3.36.1 Setpoints for discharge gas defrosting 42.........................................
3.36.2 Actual values for discharge gas defrosting 43.....................................
3.36.3 Manual control of D2D 43......................................................
3.36.4 Discharge gas defrosting in fault conditions 43....................................
3.36.5 Sequence of joint Z2 discharge gas defrosting 44..................................
3.36.6 Sequence of Z2 display case discharge gas defrosting 45..........................
3.36.7 Sequence of Z2 discharge gas defrosting with coldroom defrost mode
set to El. With UA 300 46......................................................
3.36.8 Sequence of Z2 coldroom discharge gas defrosting 47.............................
3.37 Archiving of operating data 48..................................................
3.37.1 Compressor/fan operating hours 48.............................................
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