C6.2.15/0815/E
4.2.4
Protection devices ................................................................................................ 20
4.2.5
Crankcase heaters ............................................................................................... 20
4.3
Pressure safety controls .................................................................................................. 21
4.3.1
IPR valve (Internal Pressure Relief valve) ........................................................... 21
4.3.2
High-pressure control ........................................................................................... 21
4.3.3
Low-pressure control ............................................................................................ 21
4.4
Discharge temperature protection ................................................................................... 22
4.5
Low ambient cut-out ......................................................................................................... 23
4.6
High-potential testing ....................................................................................................... 23
5
Starting up & operation................................................................................... 24
5.1
Strength pressure test ...................................................................................................... 24
5.2
Tightness/pressure test .................................................................................................... 24
5.3
Preliminary checks
– Pre-starting .................................................................................... 24
5.4
Charging procedure ......................................................................................................... 24
5.5
Initial start-up ................................................................................................................... 25
5.6
Rotation direction ............................................................................................................. 25
5.7
Pressure fluctuations ....................................................................................................... 25
5.8
Starting sound .................................................................................................................. 25
5.9
Deep vacuum operation ................................................................................................... 26
5.10
Shell temperature ............................................................................................................. 26
5.11
Minimum run time ............................................................................................................ 26
5.12
Sound characteristics ....................................................................................................... 26
5.13
Shut-off sound .................................................................................................................. 26
5.14
Frequency ........................................................................................................................ 26
5.15
Oil level control ................................................................................................................ 27
5.16
Digital system control ....................................................................................................... 27
5.17
Power factor ..................................................................................................................... 27
6
Maintenance & repair ...................................................................................... 28
6.1
Exchanging the refrigerant ............................................................................................... 28
6.2
Rotalock valves ................................................................................................................ 28
6.3
Replacing a compressor .................................................................................................. 28
6.3.1
Compressor replacement ..................................................................................... 28
6.3.2
Start-up of a new or replacement compressor ..................................................... 28
6.4
Lubrication and oil removal .............................................................................................. 29
6.5
Oil additives ..................................................................................................................... 29
6.6
Unbrazing system components ....................................................................................... 30
7
Dismantling & disposal ................................................................................... 30
DISCLAIMER ............................................................................................................... 30