Doosan AD158TI, Operation & Maintenance Manual

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Commissioning and operation - 25 -
3.3.5. Operating after break-in 20 hours
When starting a cold engine, always allow the engine to warm up gradually. Never run the engine at full throt-
tle until the engine is thoroughly warmed up.
And you
′ d better run the engine at three-fourths throttle (about 1,600 rpm) before initial 50 hours as possible.
Be sure to check the oil level frequently during the first 50 hours of operation since the oil consumption will be
high until the piston rings are properly seated.
3.4. Inspections after Starting
During operation the oil pressure in the engine lubrication system must be monitored. If the monitoring devices
register a drop in the lube oil pressure, switch off the engine immediately. And the charge warning lamp of the
alternator should go out when the engine is running.
●
Do not disconnect the battery or pole terminals or the cables!
●
If, during operation, the battery charge lamp suddenly lights up, stop the engine immediately and remedy
the fault in the electrical system!
●
Engine should be stopped if the color, the noise or the odor of exhaust gas is not normal.
●
Confirm the following things through warning lamps and gauge panel.
3.4.1. Pressure of lubricating oil
The normal pressure comes up to 1 bar at idling and 3 ~ 5 bar at rated speed. If the pressure fluctuates at
idling or does not reach up to the expected level at high speed, shut down the engine immediately and check
the oil level and the oil line leakage.
3.4.2. Temperature of cooling water
The cooling water temperature should be 71 ~ 85°C in normal operating conditions. Abnormally high cooling
water temperature could cause the overheating of engine and the sticking of cylinder components. And
excessively low cooling water temperature increases the fuel consumption, accelerates the wears of cylinder
liners and shortens the engine life-time.