ABB Power2 845-M46, Operation Manual, Page: 47 / 174

Operation Manual / Power2 845-M / 4 Product description
3 Commissioning / 3.1 Oil supply
© Copyright 2020 ABB. All rights reserved. HZTL4070_EN Rev.C January 2020
3 Commissioning
3.1 Oil supply
3.1.1 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.
3.1.2 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 5: Oil pressure range → 18) .
An electrically driven oil pump is recommended for pre-lubrication.
Power2 Pre-lubrication time
845 2 min
Table 2: Pre-lubrication time
3.1.3 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 5: Oil pressure range → 18) .
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 3: Post-lubrication time
Page
13
/
57