ABB Power2 850-M, Operation Manual, Page: 2 / 119

Operation Manual / Power2 850-M / Low-pressure stage
Table of contents
© Copyright 2022 ABB. All rights reserved. HZTL4062_EN Rev.E March 2022
6.2 Service work ................................................................................................................. 46
6.3 Expected replacement intervals .............................................................................. 48
6.4 Stopping the engine................................................................................................... 49
7 Periodic maintenance.......................................................................................... 50
7.1 Foreword to maintenance......................................................................................... 50
7.2 Cleaning the compressor during operation ........................................................... 51
7.3 Cleaning turbine and nozzle ring during operation ............................................. 54
7.4 Cleaning the filter silencer ........................................................................................ 59
8 Troubleshooting................................................................................................... 64
8.1 Malfunctions when starting...................................................................................... 64
8.2 Malfunctions during operation ................................................................................ 65
8.3 Surging of the low-pressure or high-pressure stage .......................................... 69
8.4 Malfunctions when stopping.................................................................................... 70
8.5 Speed measurement system .................................................................................... 70
9 Disassembly and assembly ................................................................................ 71
9.1 Introduction .................................................................................................................. 71
9.2 Material required.......................................................................................................... 72
9.3 Weights of assemblies................................................................................................ 73
9.4 Removing the filter silencer ...................................................................................... 74
9.5 Removing the air suction branch.............................................................................. 75
9.6 Axial clearance A prior to disassembly ................................................................... 76
9.7 Removing the wall insert ............................................................................................ 77
9.8 Removing the compressor casing ........................................................................... 79
9.9 Removing the cartridge group ................................................................................. 80
9.10 Removing turbine diffuser and nozzle ring ........................................................... 82
9.11 Installing turbine diffuser and nozzle ring............................................................. 84
9.12 Installing the cartridge group .................................................................................. 86
9.13 Installing the compressor casing ............................................................................ 89
9.14 Installing the wall insert ............................................................................................ 90
9.15 Axial clearance A after assembly.............................................................................. 92
9.16 Installing the air suction branch .............................................................................. 93
9.17 Installing the filter silencer ....................................................................................... 94
9.18 Table of tightening torques...................................................................................... 96
10 Taking out of operation at short notice ........................................................... 97
10.1 Possible emergency repairs...................................................................................... 97
11 Taking out of operation for a long period ...................................................... 100
11.1 General ........................................................................................................................ 100
11.2 Lubricating oil............................................................................................................ 100
11.3 Process for taking out of operation...................................................................... 100
12 Material and Disposal........................................................................................ 101
12.1 REACH and RoHS Compliance Declaration For Products .................................. 101
12.2 Disposing of low-pressure and high-pressure stage components ................ 102