Starting And Stopping Of The Engine; Preparing For Start; Starting The Engine; Running In - Doosan DP158L Series Operation & Maintenance Manual

Starting and stopping of the engine

Preparing for Start

Check the following before starting the engine for the first
time after purchase.
1. Before starting an engine, check the levels of fuel,
coolant, and oil and replenish those fluids if required.
2. Check if engine oil level is between the upper and lower
limit of the oil level gauge. The upper and lower limit of
the oil level gauge indicate the maximum and minimum of
the engine oil level.
CAUTION
• When replenishing engine oil, do not exceed the
maximum on the oil level gauge. Too much oil may
cause damage to the engine.
• The oil required to fill the oil filters and pipes
depends upon the engine equipment and use and
must be determined individually at the time of initial
commissioning. Make a note of the determined
quantity.
3. Be careful not to mix foreign substances in fuel, engine
oil, or coolant while adding the fluid, and keep the fluid
clean while it is not in use. Use fuel, oil, and coolant
recommended by Doosan. Otherwise, critical damage to
the engine may occur

Starting the Engine

Observe the following when starting the engine.
1. Insert key in starting lock.
2. Moving control lever to idle speed.
3. Key switch rotate clockwise.
4. Do not operate for longer than 10 seconds at a time.
5. After ignition of the engine, take-off the hands in key
switch.
6. and adjust control lever for desired speed.
7. If engine fails to start, release the key, wait about 1
minute, then operate starter again.
2. Operation and maintenance
8. Avoid running the cold engine for any length of time since
in any internal combustion engine this is liable to cause
increased wear due to corrosion. Prolonged idling is
harmful to the environment.
• On initial start of an overhauled engine or after long
periods without use, press shutdown lever in "stop"
position and operate starter motor for a few
seconds (max. 10) until oil pressure is indicated.
• Ensure that the engine can not be started by unau-
thorized persons.
9. Keep no-load operation to a minimum. During no-load
operation combustion chamber temperatures drop to the
point where fuel does not burn completely, causing slob-
bering and white smoke. Always have some load
connected when the gen set is run for long periods.

Running in

It is recommended that new or overhauled engines should
not be operated at a load higher than about 75% minimum
load during the first few hours of operation. Initial run-in
should be at varying speeds or load. After this initial run-in,
the engine should be brought up to fuel output gradually.

During Operation

Do not overload the engine. Do not exceed the
maximum permissible engine tilt. if faults occur, find
their cause immediately and have them eliminated in
order to prevent more serious damage.
1. Oil pressure
1) 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.
2. Coolant temperature
1) Operating an engine with too low coolant temperature
increases fuel consumption, abrasion of the cylinder
liner, and shortens the engine's life span.
3. Alternator
In order to avoid damage to the alternator, observe the
following instructions while the engine is running.
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CAUTION
CAUTION