© Danfoss | Climate Solutions | 2023.05
Features ................................................................................................................................ 6
Scroll compression principle .............................................................................................. 7
The scroll compression process.............................................................................................................................................................7
Compressor model designation ......................................................................................... 8
Nomenclature .............................................................................................................................................................................................. 8
Label ................................................................................................................................................................................................................ 8
Serial number...............................................................................................................................................................................................8
Technical specications ...................................................................................................... 9
50 Hz ...............................................................................................................................................................................................................9
Dimensions ........................................................................................................................ 10
MLM/MLZ090 ............................................................................................................................................................................................ 10
MLM/MLZ116 ............................................................................................................................................................................................ 11
MLM/MLZ130 ............................................................................................................................................................................................ 12
MLM/MLZ160-200-240 .......................................................................................................................................................................... 13
Electrical data, connections and wiring ........................................................................... 15
Motor voltage ........................................................................................................................................................................................... 15
Wiring connections ................................................................................................................................................................................. 15
IP rating ....................................................................................................................................................................................................... 16
Terminal box temperature ................................................................................................................................................................... 16
Three phase electrical characteristics .............................................................................................................................................. 16
Suggested wiring diagrams logic ...................................................................................................................................................... 17
Approvals and certications ............................................................................................. 20
Internal free volume ............................................................................................................................................................................... 20
Operating conditions ........................................................................................................21
Refrigerant and lubricants.................................................................................................................................................................... 21
Motor supply ............................................................................................................................................................................................. 22
Compressor ambient temperature ................................................................................................................................................... 22
Application envelope ............................................................................................................................................................................. 22
Maximum discharge gas temperature ............................................................................................................................................ 25
High and low pressure protection..................................................................................................................................................... 26
On/o cycling (cycle rate limit) .......................................................................................................................................................... 26
System design recommendations .................................................................................... 27
General ........................................................................................................................................................................................................ 27
Essential piping design considerations ........................................................................................................................................... 27
Refrigerant charge limit ....................................................................................................................................................................... 28
O-cycle migration ................................................................................................................................................................................. 28
Liquid ood back ..................................................................................................................................................................................... 30
Specic application recommendations ........................................................................... 31
Low ambient application ...................................................................................................................................................................... 31
Scroll and reciprocating ........................................................................................................................................................................ 32
Low load operations ............................................................................................................................................................................... 32
Brazed plate
heat exchangers ....................................................................................................................................................................................... 32
Water utilising systems .......................................................................................................................................................................... 32
Sound and vibration management .................................................................................. 33
Starting sound level................................................................................................................................................................................ 33
Running sound level .............................................................................................................................................................................. 33
Stopping sound level ............................................................................................................................................................................. 33
Sound generation in a refrigeration system .................................................................................................................................. 33
Compressor sound radiation ............................................................................................................................................................... 33
Mechanical vibrations ............................................................................................................................................................................ 34
Gas pulsation ............................................................................................................................................................................................ 34
Content
4AB243586442698en-000701
Application Guidelines Single compressors