Bitzer CSH6553 Instructions De Service page 42

6.3 Motor versions ............................................................................................................................................. 69
6.3.1 Part winding motor or "PW" ............................................................................................................. 69
6.3.2 Star-delta motor "Y/Δ"...................................................................................................................... 69
6.3.3 Operation with frequency inverter (FI) or soft starter ....................................................................... 70
6.4 Control logic requirements........................................................................................................................... 70
6.5 Terminal box ................................................................................................................................................ 70
6.5.1 Available apertures into the terminal box......................................................................................... 70
6.5.2 Connections in the terminal box....................................................................................................... 70
6.5.3 Coating terminal plate and pins ....................................................................................................... 71
6.5.4 Terminal box heater ......................................................................................................................... 71
6.5.5 Sealing the terminal box .................................................................................................................. 72
6.5.6 Preparing the terminal box for FI operation ..................................................................................... 72
6.6 Safety switching devices for limiting the pressue (high pressure switch and low pressure switch)............. 72
6.7 Compressor protection devices ................................................................................................................... 72
6.7.1 Temperature control circuit .............................................................................................................. 72
6.7.2 Monitoring of rotation direction, phase sequence and phase failure................................................ 72
6.7.3 SE-E1............................................................................................................................................... 72
6.7.4 CM-SW-01 ....................................................................................................................................... 73
6.7.5 SE-i1 ................................................................................................................................................ 73
6.7.6 SE-E3............................................................................................................................................... 73
6.8 Monitoring of the oil circuit ........................................................................................................................... 74
6.8.1 Opto-electronic oil level monitoring OLC-D1-S ................................................................................ 74
6.9 Oil heater ..................................................................................................................................................... 74
6.9.1 Technical data.................................................................................................................................. 74
6.10 High potential test (insulation strength test)................................................................................................. 75
6.11 Additionally earthing the compressor housing ............................................................................................. 75
7 Operation............................................................................................................................................................ 75
7.1 Regular tests................................................................................................................................................ 75
7.2 Locking the protection and monitoring devices............................................................................................ 75
8 Maintenance....................................................................................................................................................... 75
8.1 Oil change.................................................................................................................................................... 75
8.2 Replace oil filter (CSW105) ......................................................................................................................... 76
8.3 Integrated pressure relief valve ................................................................................................................... 76
8.4 Integrated check valve................................................................................................................................. 76
9 Decommissioning.............................................................................................................................................. 76
9.1 Standstill ...................................................................................................................................................... 76
9.2 Dismantling the compressor ........................................................................................................................ 76
9.3 Disposing of the compressor ....................................................................................................................... 77
10 Mind when mounting or replacing ................................................................................................................... 77
10.1 Screwed connections................................................................................................................................... 77
10.2 Sight glasses ............................................................................................................................................... 78
10.3 Electrical contacts........................................................................................................................................ 78
10.4 Special screwed connections inside the compressor .................................................................................. 79
42 SB-170-10