Operation Manual / A170-M.. - A175-M..
5 Monitoring during operation / 5.1 Oil pressure, oil temperature
© Copyright 2022 ABB. All rights reserved. HZTL4033_EN Rev.K January 2022
5 Monitoring during operation
5.1 Oil pressure, oil temperature
Lubricating oil pressure
CAUTION
Assuring lubricating oil pressure
Serious damage to the engine or property can result from a missing or insuf-
ficient lubricating oil supply.
u The lubricating oil pressure must be monitored during operation and the
necessary pressure assured at the oil inlet.
For monitoring the lubricating oil pressure, ABB Turbocharging recommends installing a
manometer"M". If the pressure is controlled electronically, the relevant signals should be
triggered at the warning and alarm values.
Fig.23: Lubricating oil pressure measuring point
The permitted oil pressure ranges at measuring point M of the turbocharger are listed be-
low.
Status for operation Pressure at measuring point M
P
oil, in
[bar]
Normal operation 1.3 ... 2.5
Engine start: Cold oil, admissible for max. 15 minutes 1.3 ... 5.0
Pre-lubrication 1.3 ... 2.5
Post-lubrication 1.3 ... 2.5
Long-term lubrication 0.2 ... 0.5
Warning signal: Temporarily admissible (<1 h ) 1.0 ... 1.3
Alarm signal: Not permissible. Stop the engine immediately < 1.0
Table10: Oil pressure range
Page 41 / 146
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