Content
3
FRCC.PC.015.A8.02
Features .................................................... 4
Scroll compression principle .................. 5
The scroll compression process......................................5
Compressor model designation ............. 6
Nomenclature .......................................................................6
Label .........................................................................................6
Technical specifications .......................... 7
50 Hz ........................................................................................7
60 Hz ........................................................................................9
R404A / R507 ......................................................................11
R22 ..........................................................................................12
R134a ....................................................................................13
R407A .....................................................................................14
R407F .....................................................................................15
Dimensions ............................................ 16
MLZ/MLM015-019-021-026 ...........................................16
MLZ/MLM030-038-042-045-048 ..................................17
MLZ/MLM058-066-076 ....................................................18
Oil sight glass ......................................................................19
Schrader ................................................................................19
Suction and discharge connections ...........................19
Electrical data, connections and wiring 20
Motor voltage .....................................................................20
Wiring connections ...........................................................20
IP rating .................................................................................20
Three phase electrical characteristics ........................21
Single phase electrical characteristics .......................21
LRA (Locked Rotor Amp) .................................................22
MCC (Maximum Continuous Current) ........................22
Max Oper. A (Maximum Operating Amp) .................22
Winding resistance............................................................22
Electrical connections ......................................................22
Nominal capacitor value and relays ............................23
Three phase .........................................................................24
Internal motor protection ..............................................24
Phase sequence and reverse rotation protection ..24
Voltage imbalance ...........................................................24
Approvals and certifications ................. 25
Approvals and certificates ..............................................25
Conformity to directives .................................................25
Internal free volume .........................................................25
Operating conditions ............................ 26
Refrigerant and lubricants..............................................26
Motor supply .......................................................................28
Compressor ambient temperature .............................28
Application envelope .......................................................28
Maximum discharge gas temperature ......................32
High and low pressure protection...............................33
On/off cycling (cycle rate limit) ....................................33
System design recommendations ........ 34
General ..................................................................................34
Essential piping design considerations .....................34
Refrigerant charge limit .................................................35
Off-cycle migration ...........................................................35
Liquid flood back ...............................................................37
Specific application recommendations 38
Low ambient application ................................................38
Scroll and reciprocating ..................................................38
Low load operations .........................................................39
Brazed plate heat exchangers .......................................39
Water utilising systems ....................................................39
Sound and vibration management ...... 40
Starting sound level..........................................................40
Running sound level ........................................................40
Stopping sound level .......................................................40
Sound generation in a refrigeration system ............40
Compressor sound radiation .........................................40
Mechanical vibrations ......................................................41
Gas pulsation ......................................................................41
Installation ............................................. 42
System cleanliness ............................................................42
Compressor handling and storage..............................42
Compressor mounting ....................................................42
Compressor holding charge ..........................................42
Tube brazing procedure ..................................................42
Brazing material .................................................................42
Vacuum evacuation and moisture removal .............44
Liquid line filter driers ......................................................44
Refrigerant charging ........................................................44
Insulation resistance and dielectric strength ..........44
Ordering information and packaging .. 45
Packaging .............................................................................45
Packaging details ...............................................................45
Single pack ...........................................................................46
Industrial pack ....................................................................47
Spare parts & accessories ...................... 48
Application Guidelines
