Bitzer CSH6553-35Y Instructions De Service page 27

Table of contents
1 Introduction.......................................................................................................................................................... 29
1.1 Also observe the following technical documents ........................................................................................ 29
2 Safety .................................................................................................................................................................. 29
2.1 Authorized staff............................................................................................................................................ 29
2.2 Residual risks .............................................................................................................................................. 29
2.3 Safety references......................................................................................................................................... 29
2.3.1 General safety references................................................................................................................ 29
3 Application ranges ............................................................................................................................................... 30
3.1 Use of flammable refrigerants of the A2L safety group (e.g. R1234yf)........................................................ 30
3.1.1 Compressor and refrigeration system requirements........................................................................ 30
3.1.2 General operation requirements ...................................................................................................... 31
4 Mounting.............................................................................................................................................................. 31
4.1 Transporting the compressor....................................................................................................................... 31
4.2 Installing the compressor............................................................................................................................. 32
4.2.1 Vibration damper.............................................................................................................................. 32
4.3 Connecting the pipelines ............................................................................................................................. 32
4.3.1 Pipe connections.............................................................................................................................. 32
4.3.2 Shut-off valves ................................................................................................................................. 32
4.3.3 Pipelines .......................................................................................................................................... 33
4.4 Oil connection .............................................................................................................................................. 34
4.5 Capacity control (CR) and start unloading (SU) .......................................................................................... 34
4.5.1 Solenoid valves and control sequences........................................................................................... 34
4.6 Connections and dimensional drawings ...................................................................................................... 35
5 Electrical connection............................................................................................................................................ 43
5.1 Mains connections ....................................................................................................................................... 43
5.2 Motor versions ............................................................................................................................................. 43
5.3 High potential test (insulation strength test)................................................................................................. 44
5.4 Protection devices ....................................................................................................................................... 44
5.4.1 SE-E1............................................................................................................................................... 44
5.4.2 SE-i1 ................................................................................................................................................ 44
5.4.3 SE-E2............................................................................................................................................... 45
5.4.4 Monitoring of the oil circuit ............................................................................................................... 45
5.4.5 Safety devices for pressure limiting (HP and LP) ............................................................................ 45
5.4.6 Oil heater ......................................................................................................................................... 45
6 Commissioning .................................................................................................................................................... 46
6.1 Checking the strength pressure................................................................................................................... 46
6.2 Checking tightness ...................................................................................................................................... 46
6.3 Evacuation ................................................................................................................................................... 46
6.4 Charging refrigerant..................................................................................................................................... 46
6.5 Checks prior to compressor start................................................................................................................. 47
6.6 Compressor start ......................................................................................................................................... 47
6.6.1 Checking the rotation direction ........................................................................................................ 47
6.6.2 Lubrication/oil level monitoring......................................................................................................... 48
6.6.3 Set high-pressure and low-pressure limiters (HP + LP)................................................................... 48
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