ABB PT004161, Operation Manual

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Operation Manual / Power2 845-M / High-pressure stage
4 Commissioning / 4.1 Oil supply
© Copyright 2022 ABB. All rights reserved. HZTL4069_EN Rev.F March 2022
4 Commissioning
4.1 Oil supply
4.1.1 Introduction
In all operating states, a functioning and carefully executed oil supply is an important pre-
requisite for trouble-free operation of the low-pressure and high-pressure stage.
The low-pressure and high-pressure stage are usually lubricated with oil from the engine oil
circulation.
u
The directives of the enginebuilder on the selection of the lubricating oil and the oil
change intervals must be followed.
4.1.2 Pre-lubrication
Before the engine is started, the plain bearings of the low-pressure and high-pressure stage
must be pre-lubricated, in order to avoid bearing damage caused by dry running.
u
Adhere to the admissible oil pressure range (see Table 12: Oil pressure range → 38) .
An electrically driven oil pump is recommended for pre-lubrication.
Power2 Pre-lubrication time
845 2 min
Table 9: Pre-lubrication time
4.1.3 Post-lubrication
Post-lubrication is necessary after switching the engine off, in order to avoid oil coking in
the vicinity of the shaft seal. The post-lubrication time starts as soon as the oil pressure
drops below the admissible value due to switching off the engine.
u
Adhere to the admissible oil pressure range (see Table 12: Oil pressure range → 38) .
An electrically driven oil pump is recommended for post-lubrication.
Power2 Post-lubrication time
845 LP 30 min
845 HP 1.5 h or until turbine inlet temperature TTE <180 °C
Table 10: Post-lubrication time
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