Fig. 33: Turbine End, Non-Rotating Parts - ABB A155-M Series Operation Manual

Operation Manual / A150-M56/66/57/67 - A155-M..
7 Periodic maintenance work / 7.4 Cleaning components mechanically
Baked layers of contamination, for example, from heavy fuel oil or coked oil occur at the tur-
bine end. The following parts, which are relevant in terms of performance, can be cleaned in
accordance with the description below.
Fig. 33: Turbine end, non-rotating parts
51000 Turbine casing
57002 Gas outlet flange
56001 Nozzle ring
56005 Lamellar sealing ring
Dismantle the lamellar sealing ring (56005) in the nozzle ring.
u
Place contaminated parts in hot water or in a liquid such as brake cleaner to soften the
u
contamination.
Brush away the contamination or remove with a steam cleaner.
u
Repeat the soaking and brushing process if necessary.
u
Use clean water to remove all traces of solvent from parts.
u
Dry components completely.
u
Spray cleaned surfaces with penetrating oil. Do not spray exterior surfaces of the tur-
u
bocharger.
Dispose of dirty water and cleaning agents in accordance with the information in the ma-
u
terial safety data sheet.
Option with cleaning nozzle
The cleaning nozzle (51301) must be replaced after each removal procedure. If the clean-
u
ing nozzle is not to be replaced, the screw connection (01) must not be loosened during
disassembly.
Water or air can be passed through the piping and into the cleaning nozzle to check whether
it is blocked. When installed, the cleaning nozzle can be mechanically cleaned with a needle.
Option with 6-nozzle cleaning
See Removing and installing 6-nozzle turbine cleaning component (optional)
© Copyright 2021 ABB. All rights reserved.
51301 Cleaning nozzle (optional)
01 Screw connection (provided by the cus-
tomer)
HZTL4032_EN
→158.
Rev.Q January 2021