Danfoss Maneurop NTZ048 - Default Chapter; Table of Contents

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MANEUROP® RECIPROCATING COMPRESSORS ........................................................................................................... 4

Features ................................................................................................................................................................................................................................................................... 4

Compressor reference ............................................................................................................................................................................................................. 4

INTRODUCTION ............................................................................................................................................................................................................................................. 5

Code numbers .......................................................................................................................................................................................................................................... 5

Packaging ............................................................................................................................................................................................................................................................ 5

SPECIFICATIONS .......................................................................................................................................................................................................................................... 6

Technical speci cations and nominal ratings ...................................................................................................................... 6

Approvals and certi cates ............................................................................................................................................................................................... 6

Operating envelope ..................................................................................................................................................................................................................... 6

OUTLINE DRAWINGS .......................................................................................................................................................................................................................... 7

1 cylinder ............................................................................................................................................................................................................................................................. 7

2 cylinders .......................................................................................................................................................................................................................................................... 8

4 cylinders .......................................................................................................................................................................................................................................................... 9

ELECTRICAL CONNECTIONS AND WIRING ........................................................................................................................... 10

Voltage application range ........................................................................................................................................................................................... 10

Electrical connections ......................................................................................................................................................................................................... 10

Single phase electrical characteristics ............................................................................................................................................ 10

Nominal capacitor values and relays ................................................................................................................................................. 11

Single phase motor protection and suggested wiring diagram ........................................... 11

Three phase electrical characteristics .................................................................................................................................................. 13

Three phase motor protection and suggested wiring diagram ................................................. 13

REFRIGERANTS AND LUBRICANTS .............................................................................................................................................................. 15

SYSTEM DESIGN RECOMMENDATIONS ............................................................................................................................................ 16

Piping design .............................................................................................................................................................................................................................................. 16

Operating limits .................................................................................................................................................................................................................................... 18

Motor protection ............................................................................................................................................................................................................................... 19

Discharge temperature protection ............................................................................................................................................................ 19

Liquid refrigerant control and charge limits ......................................................................................................................... 20

SOUND AND VIBRATION MANAGEMENT .................................................................................................................................... 22

Sound .......................................................................................................................................................................................................................................................................... 22

Vibration ............................................................................................................................................................................................................................................................... 22

INSTALLATION AND SERVICE .................................................................................................................................................................................... 23

System cleanliness .......................................................................................................................................................................................................................... 23

Compressor handling, mounting and connection .................................................................................................. 23

System pressure test .................................................................................................................................................................................................................. 24

Leak detection ......................................................................................................................................................................................................................................... 25

Vacuum pump-down and dehydration procedure ................................................................................................ 25

Start-up ................................................................................................................................................................................................................................................................... 25

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