Bitzer CSH6553 Instructions De Service page 41

Table of contents
1 Introduction........................................................................................................................................................ 43
1.1 Also observe the following technical documents ........................................................................................ 43
2 Safety.................................................................................................................................................................. 43
2.1 Authorized staff............................................................................................................................................ 43
2.2 Residual risks .............................................................................................................................................. 43
2.3 Safety references......................................................................................................................................... 43
2.3.1 General safety references................................................................................................................ 43
3 Application ranges ............................................................................................................................................ 44
3.1 Economiser and additional cooling .............................................................................................................. 45
3.2 Use of flammable refrigerants of the A2L safety group (e.g. R1234yf)........................................................ 45
3.2.1 Compressor and refrigeration system requirements........................................................................ 46
3.2.2 General operation requirements ...................................................................................................... 46
4 Commissioning.................................................................................................................................................. 46
4.1 Checking pressure strength......................................................................................................................... 46
4.2 Checking tightness ...................................................................................................................................... 47
4.3 Evacuation ................................................................................................................................................... 47
4.4 Charging refrigerant..................................................................................................................................... 47
4.5 Checks prior to compressor start................................................................................................................. 47
4.6 Compressor start ......................................................................................................................................... 48
4.6.1 Checking the rotation direction ........................................................................................................ 48
4.6.2 Lubrication/oil level monitoring......................................................................................................... 48
4.6.3 Set high pressure and low pressure switches (HP + LP)................................................................. 48
4.6.4 Set the condenser pressure............................................................................................................. 48
4.6.5 Vibrations and frequencies .............................................................................................................. 49
4.6.6 Checking the operating data ............................................................................................................ 49
4.6.7 Particular notes on safe compressor and system operation ............................................................ 49
5 Mounting ............................................................................................................................................................ 50
5.1 Transporting the compressor....................................................................................................................... 50
5.1.1 Centres of gravity and weights......................................................................................................... 50
5.2 Installing the compressor............................................................................................................................. 54
5.2.1 Arranging for removal clearances .................................................................................................... 54
5.2.2 Marine application............................................................................................................................ 54
5.2.3 Vibration dampers............................................................................................................................ 54
5.3 Connecting the pipelines ............................................................................................................................. 55
5.3.1 Pipe connections.............................................................................................................................. 55
5.3.2 Shut-off valves ................................................................................................................................. 55
5.3.3 Pipelines .......................................................................................................................................... 56
5.4 Oil connection .............................................................................................................................................. 57
5.5 Capacity control (CR) and start unloading (SU) .......................................................................................... 57
5.5.1 Solenoid valves and control sequences........................................................................................... 57
5.6 Connections and dimensional drawings ...................................................................................................... 59
6 Electrical connection ........................................................................................................................................ 68
6.1 Checklist ...................................................................................................................................................... 68
6.2 Dimensioning components .......................................................................................................................... 69
SB-170-10 41