ABB PT003888 - Stopping the Engine; Table 16

Operation Manual / Power2 340-H / Low-pressure stage
6 Operation and service / 6.4 Stopping the engine
© Copyright 2022 ABB. All rights reserved. HZTL4053_EN Rev.F March 2022
6.4 Stopping the engine
Oil-cooled bearing casing variant
u Run the engine for 5 to 10 minutes at idling speed before stopping it (only diesel en-
gines).
u Observe the oil pressure for engine idling: 0.5 < p
oil
≤ 2.5 bar.
u Stop the engine.
u Carry out post-lubrication of the low-pressure and high-pressure stage in accordance
with the following table.
Turbine inlet temper-
ature when stopping
the engine
t
TE
[°C]
Post-lubrication Duration of post-lub-
rication [min]
Oil pressure during
post-lubrication (en-
gine stopped)
p
oil
[bar]
≥550 imperative 15 … 20 0.5 <p
oil
≤1.0
< 550 necessary until the ro-
tor comes to a stand-
still
10
recommended
0.5 <p
oil
≤1.0
Table16
Water-cooled bearing casing variant
u Post-lubricate as long as the rotor is turning.
u Observe the oil pressure while performing post-lubrication: 1.0 <p
oil
≤0.5.
u Switch off post-lubrication as soon as the rotor has come to a standstill.
Deviating procedures must be coordinated with Turbo Systems.
CAUTION
Water cooling (if present)
If the residual heat in the low-pressure stage is not sufficiently dissipated by
the circulating cooling water, machine damage could occur.
u Allow water cooling to continue for 20…30 minutes after stopping the
engine.
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