Table Of Contents - Panasonic 4CW056MA01 Applications Manual

Safety Instructions ............................................................................................................................................ 1
1.0 Structure and Operating Characteristics ..................................................................................................... 2
1.1 Key Components .................................................................................................................................... 2
1.2 Scroll Compressor Operating Characteristics ......................................................................................... 2
1.3 Compressor Design Pressure .................................................................................................................. 3
1.4 Refrigerant Oil ........................................................................................................................................ 3
1.5 Compressor Models and Motor Type ..................................................................................................... 4
2.0 Refrigerating Circuit Design Considerations .............................................................................................. 5
2.1 Condensing Pressure and Evaporating Pressure ..................................................................................... 5
2.2 Suction Temperature ............................................................................................................................... 5
2.3 Discharge Temperature ........................................................................................................................... 6
2.4 Sub Cooling Degree ............................................................................................................................... 6
2.5 Liquid refrigerant flood back .................................................................................................................. 6
2.6 Suction Accumulator .............................................................................................................................. 6
2.7 Discharge Line Check Valve................................................................................................................... 7
2.8 Suction Line Strainer .............................................................................................................................. 7
2.9 Dryer ....................................................................................................................................................... 7
2.10 Oil separator ......................................................................................................................................... 7
2.11 System Charge Limit ............................................................................................................................ 8
2.12 Oil level of the compressor ................................................................................................................... 8
2.13 Operating Envelope .............................................................................................................................. 8
2.14 Pipe surface stress ................................................................................................................................. 9
2.15 Allowable incline .................................................................................................................................. 9
2.16 Vibration ............................................................................................................................................... 9
3.0 Electrical Parts and Controller Design Considerations ............................................................................. 10
3.1 Selection of Electrical Wiring ............................................................................................................... 10
3.2 Selection of Inverter Driver .................................................................................................................. 12
3.3 Starting and maximum current of compressor ...................................................................................... 12
3.4 Starting of compressor .......................................................................................................................... 12
3.5 Stopping of compressor ........................................................................................................................ 13
3.6 Rate of revolution speed change ........................................................................................................... 13
3.7 Defrost operation .................................................................................................................................. 13
3.8 Cautions of transition phase to lower speed operation ......................................................................... 13
3.9 Caution for continuous low speed/high speed operation ...................................................................... 13

TABLE OF CONTENTS