Bitzer 4CTEU-30LK, Technical Information

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KT-102-1 2
Table of contents
1 Introduction............................................................................................................................................................ 3
1.1 Also observe the following technical documents ........................................................................................... 3
2 Safety .................................................................................................................................................................... 3
2.1 Authorized staff.............................................................................................................................................. 3
2.2 Residual risks ................................................................................................................................................ 3
2.3 Safety references........................................................................................................................................... 3
2.3.1 General safety references.................................................................................................................. 4
3 State of delivery..................................................................................................................................................... 4
4 Connections and dimensional drawings ................................................................................................................ 4
5 The CRII system for BITZER reciprocating compressors for transcritical CO
2
applications.................................. 7
5.1 Control principle............................................................................................................................................. 7
5.2 Control concepts and activation of the solenoid valves ................................................................................. 8
6 Electrical connection.............................................................................................................................................. 9
6.1 Motor connection ........................................................................................................................................... 9
6.2 High pressure switch ..................................................................................................................................... 9
6.3 Connecting operation monitoring via the BEST SOFTWARE ....................................................................... 9
6.4 Schematic wiring diagram.............................................................................................................................. 9
7 Application limits in part-load operation............................................................................................................... 11
8 Operating the CRII capacity control with the system controller ........................................................................... 11
8.1 Control via analogue signal ......................................................................................................................... 11
8.2 Control via Modbus interface ....................................................................................................................... 12
9 Monitoring the operating parameters using the BEST SOFTWARE ................................................................... 12
9.1 Communication via BEST SOFTWARE ...................................................................................................... 12
9.2 Configuring CM-RC-01 with the BEST SOFTWARE ................................................................................... 13
9.3 Capacity control CRII with the BEST SOFTWARE...................................................................................... 13