ABB A175-M52 - Page 4

Operation Manual / A170-M.. - A175-M..
Table of contents
© Copyright 2020 ABB. All rights reserved. HZTL4033_EN Rev.G December 2020
6.3 Expected replacement intervals ............................................................................... 51
6.4 Stopping the engine................................................................................................... 52
7 Periodic maintenance.......................................................................................... 53
7.1 Foreword to maintenance......................................................................................... 53
7.2 Cleaning the filter silencer ........................................................................................ 54
7.3 Cleaning the slotted diffuser..................................................................................... 57
7.4 Cleaning the compressor during operation .......................................................... 58
7.5 Cleaning turbine and nozzle ring ............................................................................. 64
8 Troubleshooting................................................................................................... 70
8.1 Malfunctions when starting...................................................................................... 70
8.2 Malfunctions during operation ................................................................................. 71
8.3 Surging of the turbocharger...................................................................................... 73
8.4 Malfunctions when stopping.................................................................................... 74
8.5 Speed measurement system..................................................................................... 75
9 Disassembly and assembly................................................................................. 76
9.1 Introduction ................................................................................................................. 76
9.2 Weight of assemblies................................................................................................. 78
9.3 Removing the air inlets .............................................................................................. 79
9.4 Axial clearance A prior to disassembly .................................................................... 81
9.5 Removing the compressor casing........................................................................... 82
9.6 Removing the cartridge group................................................................................. 86
9.7 Removing the nozzle ring .......................................................................................... 89
9.8 Installing the nozzle ring ........................................................................................... 93
9.9 Installing the cartridge group .................................................................................. 98
9.10 Fitting the spinner nose cone ................................................................................. 101
9.11 Installing the compressor casing .......................................................................... 103
9.12 Axial clearance A after assembly............................................................................ 107
9.13 Installing the air inlets ............................................................................................. 108
9.14 Removing and installing turbine-end nozzle ring................................................ 110
9.15 Table of tightening torques..................................................................................... 114
10 Taking a turbocharger out of operation.......................................................... 117
10.1 Possible emergency repairs..................................................................................... 117
10.2 Locking the rotor ....................................................................................................... 118
10.3 Fitting the cover plate............................................................................................... 121
10.4 Blanking off the inlets and outlets ......................................................................... 123
10.5 Engines with bypass around the turbocharger ................................................... 123
11 Mothballing the turbocharger.......................................................................... 124
11.1 Taking the engine out of operation for up to 12months .................................. 124
11.2 Taking the engine out of operation for more than 12months ......................... 125
12 Disposing of turbocharger components ........................................................ 126