ABB A170-L37, Operation Manual

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Operation Manual / 4 Product description / A100-L
7 Troubleshooting Page 53 / 113
© Copyright 2016 ABB. All rights reserved. HZTL4034_EN Revision H November 2016
Exhaust gas temperature too high
Engine performance and engine speed unchanged
Possible causes Remedy
Engine Malfunction in the injection system Repair or contact manufacturer
Turbocharger Insufficient air, for example, when filter
silencer is blocked by dirt
Clean ( Periodic maintenance [➙ 37])
Compressor/turbine contaminated
Exhaust gas back pressure too high
Clean or repair boiler or exhaust gas si-
lencer
Turbine damaged or eroded Contact ABB Turbocharging Service
Station
Charge air cool-
er
Cooler contaminated Clean
Cooling water volume too low Fill
Inlet temperature of cooling water too
high
Check/clean cooling system
Insufficient ventilation Improve ventilation
Table 20: Malfunctions during operation – Exhaust gas temperature too high
Charge air pressure too low
Engine performance and engine speed unchanged, suction condition normal
Possible causes Remedy
Engine Air receiver not sealed Repair
Gas pipe between engine and turbine not
sealed
Injection mistimed
Set correctly
Valve control misadjusted
Turbocharger Manometer display not correct Replace manometer
Supply pipe to manometer not sealed Repair leak
Filter silencer contaminated, therefore
pressure drop too high
Clean ( Periodic maintenance [➙ 37])
Compressor end and/or turbine end con-
taminated
Compressor/turbine damaged
Contact ABB Turbocharging Service
Station
Exhaust gas back pressure too high Clean or repair boiler or exhaust gas si-
lencer
Pipes Pipes downstream to the compressor out-
let not sealed.
Repair.
Table 21: Malfunctions during operation – Charge air pressure too low