FRCC.PC.015.A5.02
3
Application Guidelines
Contents
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 ......................................................................................... 8
Technical specifications ........................... 8
R404A / R507 ......................................................................... 9
R22 ...........................................................................................10
R134a .....................................................................................11
Dimensions ............................................. 12
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
Electrical data, connections and wiring 16
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
Approvals and certifications .................. 21
Approvals and certificates ...............................................21
Conformity to directives ..................................................21
Internal free volume ..........................................................21
Operating conditions ............................. 22
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
System design recommendations ......... 27
General ...................................................................................27
Essential piping design considerations ......................27
Refrigerant charge limit ..................................................28
Off-cycle migration ............................................................28
Liquid flood back ................................................................30
Specific application recommendations 31
Low ambient application .................................................31
Scroll and reciprocating ...................................................31
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
Installation .............................................. 35
System cleanliness .............................................................35
Compressor handling and storage...............................35
Compressor mounting .....................................................35
Compressor holding charge ...........................................35
Tube brazing procedure ...................................................35
Brazing material ..................................................................35
Vacuum evacuation and moisture removal ..............36
Liquid line filter driers .......................................................37
Refrigerant charging .........................................................37
Insulation resistance and dielectric strength ...........37
Ordering information and packaging ... 38
Packaging ..............................................................................38
Packaging details ................................................................38
Single pack ............................................................................39
Industrial pack .....................................................................40
Spare parts & accessories ....................... 41
Run capacitors for PSC wiring ........................................41
Start capacitors and starting relay for CSR wiring ..41
Rotolock adaptor set .........................................................41
Rotolock adaptor ................................................................41
Crankcase heater ................................................................42
Discharge temperature protection ..............................42
Magnetic discharge non return valve .........................42
Magnetic discharge non return valve .........................42
Lubricant ................................................................................42
Mounting hardware ...........................................................43
IP54 upgrade kit .................................................................43
Acoustic hood .....................................................................43