Operation Manual / Power2 850-M / 4 Product description
3 Commissioning / 3.1 Oil supply
© Copyright 2020 ABB. All rights reserved.
HZTL4061_EN
Rev.D
March 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
An electrically driven oil pump is recommended for pre-lubrication.
Power2
Pre-lubrication time
850
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
An electrically driven oil pump is recommended for post-lubrication.
Power2
Post-lubrication time
850 LP
30 min
850 HP
1.5 h or until turbine inlet temperature TTE <180 °C
Table 3: Post-lubrication time
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