ABB Power2 850-M16 - Page 76

Operation Manual / Power2 800-M / 4 Product description
7
Troubleshooting
Page 44 /
59
© Copyright 2016 ABB. All rights reserved.
HZTL4061_EN
Revision A
September 2016
7.3 Surging of the low-pressure or high-pressure stage
Possible causes
Remedy
Low-pressure or
high-pressure
stage
Filter silencer or diffuser contaminated Clean
Charge air
cooler/intercoole
r
Cooler contaminated Clean
Charge air duct blocked
Table 29: 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 periodical-
ly, their components may be damaged.
 Gradually reduce the engine load.
 Have the cause clarified and remedied immediately by an ABB Turbo-
charging Service Station.
 Have parts assessed for damage and, if necessary, replaced by an ABB
Turbocharging 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 impair
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.