Operation Manual / Power2 845-M / High-pressure stage
8 Troubleshooting / 8.3 Surging of the low-pressure or high-pressure
stage
© Copyright 2022 ABB. All rights reserved.
HZTL4069_EN
Rev.F
March 2022
8.3
Surging of the low-pressure or high-pressure
stage
Possible causes
Remedy
Low-pressure
or
high-pressure
stage
Filter silencer or diffuser contamin-
ated
Clean
Charge air
cooler/inter-
cooler
Cooler contaminated
Clean
Charge air duct blocked
Table 36: Surging of the low-pressure or high-pressure stage
CAUTION
Continuous or periodic surging
If the low-pressure or high-pressure stages surge continuously or periodic-
ally, their components may be damaged.
u
Gradually reduce the engine load.
u
Have the cause clarified and remedied immediately by a Turbo Systems
service station.
u
Have parts assessed for damage and, if necessary, replaced by a Turbo
Systems service station.
Sporadic surge blows
Surging of the low-pressure stage can occur during certain operating states, such as when
reducing the engine performance quickly when manoeuvring. When this happens, the flow
direction in the compressor is momentarily reversed. Such sporadic surge blows do not im-
pair the safe operation of the low-pressure stage.
¡
A surge blow is accompanied by a loud bang and the escape of hot air from the filter si-
lencer of the low-pressure stage.
No air escapes from the high-pressure stage.
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