Commissioning; Oil Supply; Table 9: Pre-Lubrication Time; Table 10: Post-Lubrication Time - ABB PT004165 Operation Manual

Operation Manual / Power2 850-M / High-pressure stage
4 Commissioning / 4.1 Oil supply
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.
The directives of the enginebuilder on the selection of the lubricating oil and the oil
u
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.
Adhere to the admissible oil pressure range
u
An electrically driven oil pump is recommended for pre-lubrication.
Power2
850
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.
Adhere to the admissible oil pressure range
u
An electrically driven oil pump is recommended for post-lubrication.
Power2
850 LP
850 HP
Table 10: Post-lubrication time
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(see Table 12: Oil pressure range
Pre-lubrication time
2 min
(see Table 12: Oil pressure range
Post-lubrication time
30 min
1.5 h or until turbine inlet temperature TTE <180 °C
HZTL4063_EN
→38).
→38).
Rev.F March 2022