ABB PT003888 - Monitoring During Operation; Lubricating Oil Pressure; Fig. 16: Oil Monitoring; Table 12: Lubricating Oil Pressure at Oil Inlet Upstream of the Turbocharger

Operation Manual / Power2 340-H / Low-pressure stage
5 Monitoring during operation / 5.1 Lubricating oil pressure
© Copyright 2022 ABB. All rights reserved. HZTL4053_EN Rev.F March 2022
5 Monitoring during operation
5.1 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, Turbo Systems recommends installing a mano-
meter"M". If the pressure is controlled electronically, the relevant signals should be
triggered at the warning and alarm values.
Fig.16: Oil monitoring
01 Contact surface of the low-pressure stage
02 Oil inlet
03 Oil outlet
M Oil pressure measuring point
T Oil temperature measuring point
*) If the drain pipe is vented, the oil temperature measuring point can be installed at the out-
let in the vent tank. Otherwise the measurement should be taken in the drain pipe as close to
the low-pressure and high-pressure stage as possible.
Status for operation Pressure at oil inlet upstream of
the turbocharger
[bar] Overpressure
Normal operation 2.0< p
oil
≤ 4.5
Engine start: Cold oil, admissible for a maximum of 15
minutes
<8.0
Engine idling, admissible for a maximum of 1 hour 0.5< p
oil
≤ 2.5
Pre-lubrication and post-lubrication (engine stopped) 0.5< p
oil
≤ 1.0
Warning signal: (n ≥ 0.5 x n
Bmax
) 0.5< p
oil
≤1.25
Alarm signal: Not admissible. Stop the engine immedi-
ately.
0.0< p
oil
≤0.5
Table12: Lubricating oil pressure at oil inlet upstream of the turbocharger
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