Volvo TAD1345GE Betriebsanweisung PDF herunterladen (Seite 26)

Operation

Correct operating technique is very important for both fuel economy and engine life. Always let the engine warm

up to normal operating temperature before operating at full power. Avoid sudden throttle openings and operation

at high engine rpm.

Reading the Instruments

Check all instruments directly after starting, and then

regularly during operation.

NOTICE! On engines in continuous operation, the

lubrication oil level must be checked at least every 24

hours. Refer to Oil level, checking and topping

up page 50.

Alarms

If the EMS system receives abnormal signals from the

engine, the control unit generates fault codes and

alarms, in the form of lamps and audible warnings. This

is done by means of CAN signals to the instrument.

More information about fault codes and fault tracing

can be found in the chapter. Alarm handling.

Maneuvering

Operation at low load

Avoid long-term operation at idle or at low load, since

this can lead to increased oil consumption and even-

tually to oil leakage from the exhaust manifold, since

oil will seep past the turbocharger seals and accom-

pany the induction air into the inlet manifold at low

turbo pressure.

One consequence of this is carbon build-up on valves,

piston crowns, exhaust ports and the exhaust turbine.

At low loads, the combustion temperature may

become so low that complete combustion cannot be

ensured, resulting in possible fuel dilution of lubricating

oil and eventually leakage from the exhaust manifold.

If the following points are done as a complement to

normal maintenance, there will be no risk of malfunc-

tions caused by operation at low load.

•

Reduce operation at low load to a minimum. If the

engine is regularly test-run without load once a

week, the duration of this operation should be lim-

ited to 5 minutes.

•

Run the engine at full load for about 4 hours once a

year. In this way carbon deposits in the engine and

exhaust system are given the chance to burn up.

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