Table Of Contents - Danfoss MLM Series Application Manuallines

A G
PPLICATION UIDELINES
2
C
ONTENTS
F ...................................................................................................................................................4
EATURES
S ......................................................................................................................5
CROLL COMPRESSION PRINCIPLE
The scroll compression process..............................................................................................................................................................5
C ...................................................................................................................6
OMPRESSOR MODEL DESIGNATION
Nomenclature ...............................................................................................................................................................................................6
Label .................................................................................................................................................................................................................6
T .............................................................................................................................7
ECHNICAL SPECIFICATIONS
50 Hz ................................................................................................................................................................................................................7
60 Hz ................................................................................................................................................................................................................8
T .............................................................................................................................8
ECHNICAL SPECIFICATIONS
R404A / R507 ................................................................................................................................................................................................9
R22 ................................................................................................................................................................................................................. 10
R134a ........................................................................................................................................................................................................... 11
D .............................................................................................................................................12
IMENSIONS
MLZ/MLM015-019-021-026 .................................................................................................................................................................. 12
MLZ/MLM030-038-042-045-048 ......................................................................................................................................................... 13
MLZ/MLM058-066-076 ........................................................................................................................................................................... 14
Oil sight glass ............................................................................................................................................................................................. 15
Schrader ....................................................................................................................................................................................................... 15
Suction and discharge connections .................................................................................................................................................. 15
E ,
LECTRICAL DATA CONNECTIONS AND WIRING
Motor voltage ............................................................................................................................................................................................ 16
Wiring connections .................................................................................................................................................................................. 16
IP rating ........................................................................................................................................................................................................ 16
Three phase electrical characteristics ............................................................................................................................................... 17
Single phase electrical characteristics .............................................................................................................................................. 17
LRA (Locked Rotor Amp) ........................................................................................................................................................................ 18
MCC (Maximum Continuous Current) ............................................................................................................................................... 18
Max Oper. A (Maximum Operating Amp) ........................................................................................................................................ 18
Winding resistance................................................................................................................................................................................... 18
Electrical connections ............................................................................................................................................................................. 18
Nominal capacitor value and relays ................................................................................................................................................... 19
Three phase ................................................................................................................................................................................................ 20
Internal motor protection ..................................................................................................................................................................... 20
Phase sequence and reverse rotation protection ......................................................................................................................... 20
Voltage imbalance .................................................................................................................................................................................. 20
A ...................................................................................................................21
PPROVALS AND CERTIFICATIONS
Approvals and certifi cates ..................................................................................................................................................................... 21
Conformity to directives ........................................................................................................................................................................ 21
Internal free volume ................................................................................................................................................................................ 21
O ..............................................................................................................................22
PERATING CONDITIONS
Refrigerant and lubricants..................................................................................................................................................................... 22
Motor supply .............................................................................................................................................................................................. 23
Compressor ambient temperature .................................................................................................................................................... 23
Application envelope .............................................................................................................................................................................. 23
Maximum discharge gas temperature ............................................................................................................................................. 25
High and low pressure protection...................................................................................................................................................... 26
On/off cycling (cycle rate limit) ........................................................................................................................................................... 26
S ...............................................................................................................27
YSTEM DESIGN RECOMMENDATIONS
General ......................................................................................................................................................................................................... 27
Essential piping design considerations ............................................................................................................................................ 27
Refrigerant charge limit ........................................................................................................................................................................ 28
Off -cycle migration .................................................................................................................................................................................. 28
Liquid fl ood back ...................................................................................................................................................................................... 30
FRCC.PC.015.A4.02
...................................................................................................16