Surging Of The Low-Pressure Or High-Pressure Stage; Table 36: Surging Of The Low-Pressure Or High-Pressure Stage - ABB PT004162 Operation Manual

Operation Manual / Power2 845-M / High-pressure stage
8 Troubleshooting / 8.3 Surging of the low-pressure or high-pressure
stage
8.3 Surging of the low-pressure or high-pressure
stage
Possible causes
Low-pressure Filter silencer or diffuser contamin-
or ated
high-pressure
stage
Charge air Cooler contaminated
cooler/inter-
Charge air duct blocked
cooler
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.
Gradually reduce the engine load.
u
Have the cause clarified and remedied immediately by a Turbo Systems
u
service station.
Have parts assessed for damage and, if necessary, replaced by a Turbo
u
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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Remedy
Clean
Clean
HZTL4069_EN Rev.F March 2022