ABB A140-H55 Operation Manual

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ABB A140-H55 Operation Manual Manual pdf 75 page image

Operation Manual / 4 Product description / A130-H.. - A140-H..5 Operation and service Page 43 / 115© Copyright 2015 ABB. All rights reserved. HZTL4030_EN Revision C September 20155.4 Stopping the engineCAUTIONResidual heat in the turbochargerIf the residual heat in the turbocharger is not adequately dissipated, it maydamage the engine. Adequate cooling of the turbocharger must be ensured after stopping theengine. Post-lubricate water-cooled bearing casings until the rotors come to a standstill. Deactivatepost-lubrication as soon as the rotor comes to a standstill. Deviating procedures must becoordinated with ABB Turbo Systems. For oil-cooled bearing casings, post-lubricate for 15 ... 20 minutes if the turbine inlettemperature (t TE ) exceeds the following values when the engine is stopped:– 550 °C with insulated casing– 600 °C with non-insulated casingAt temperatures below the specified values, post-lubrication must be ensured until therotors come to a standstill. ABB Turbo Systems recommends post-lubrication for10 minutes. Observe the oil pressure specified for post-lubrication (see Table 6).