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Operation Manual / Power2 650-M / 4.2 High-pressure stage
5 Taking out of operation at short notice / 5.3 Fitting the cover plate
© Copyright 2019 ABB. All rights reserved.
HZTL4066_EN
Revision A
March 2019
5.3
Fitting the cover plate
The cover plate has two functions. It seals the turbine casing from exhaust gas and the
bracket from oil leaks.
u
Remove high-pressure stage (see chapter
u
Fit the turbine casing with the gas outlet casing into the gas pipe again.
u
Attach the cover plate (see following section).
Fig. 22: Attaching the cover plate
1. With the high-pressure stage, make sure that the oil connections of the high-pressure
stage are sealed with a gasket under the cover plate (01) or with O-rings inside the cover
plate (01). If the O-rings of the high-pressure stage are used, slots must be cut into the
contact surface of the cover plate
(see Fig. 24: Figure for cover plate, slots for O-rings
.
2. Close the opening in the turbine casing (51000) with the cover plate (01).
3. Thoroughly clean the fastening strips (51002) before assembly. Coat the threads of the
studs (51006) with high-temperature grease.
4. Fasten cover plate (01) to turbine casing (51000) with fastening strips (51002), Verbus
Ripp® washers (51003) and nuts (51007) and screw to bracket.
Part number
Tightening torque [Nm]
51007
M12
75
Table 14: Tightening torque (51007)
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