Turbocharger Is Surging; Table 23: Malfunction - Turbocharger Pumping; Table 24: Malfunction - Sporadic Surge Blows - ABB HT600042 Operation Manual

Operation Manual / 4 Product description / TPS44-H.. - TPS52-H..
8 Eliminating malfunctions / 8.3 Turbocharger is surging
8.3

Turbocharger is surging

WARNING
Hot air escapes from the filter silencer
A surge blow is accompanied by a loud bang and escape of hot air from the
filter silencer. Personal injury can result.
Keep distance from the filter silencer while the turbocharger is surging.
u
Turbocharger surges continuously or periodically
CAUTION
Continuous or periodic surging
If the turbocharger surges continuously or periodically, parts of the tur-
bocharger may be damaged.
Gradually reduce the engine load.
u
Have the cause clarified and remedied immediately by an ABB Turbochar-
u
ging Service Station.
Have parts assessed for damage and, if necessary, replaced by an ABB
u
Turbocharging Service Station.
Possible causes
Turbocharger Filter silencer or diffuser contamin-
ated
Heavy contamination deposits in the
turbine or in the nozzle ring
Engine Protective grating in front of the tur-
bocharger contaminated or damaged
Charge air Cooler contaminated
cooler
Charge air duct blocked
Table 23: Malfunction – Turbocharger pumping
Sporadic surge blows
Possible causes
Engine Engine load reduced quickly when
manoeuvring.
When this happens, the flow direction
in the compressor is momentarily re-
versed. Such sporadic surge blows do
not impair the safe operation of the
turbocharger.
Table 24: Malfunction – Sporadic surge blows
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Remedy
Clean (see chapter
work →30)
Clean/replace
Clean
Remedy
- -
HZTL4037_EN
Periodic maintenance
Revision E July 2017