Moteurs Baudouin 12M26 Series, Operation & Maintenance Manual

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Operation & Maintenance Manual for 12M26 Series Gas Engine
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5.Check electronic system
The system uses 24V DC power supply. The current from the battery enters the system and the
engine control module (ECU) in two ways: in one way, it enters the system via the ignition key
switch, serving as the main power source of the system; in the other way, it enters the system
directly via the fuse, providing the uninterrupted power supply for the system.
ECU also collects the system’s operating voltage signals and controls the actuator based on the
real-time correction of the operating voltage.
3.5 Engine starting
◆ Before starting the engine ， it must be ensure that the crankshaft rotated smoothly.
◆ When the conditions of starting are ready, start the engine.
◆ If the conditions of starting are ready, yet the engine still cannot be started within 5 to 10
seconds, then wait 30 seconds before repeating the start-up process. But if the engine fails to start
for three consecutive times, stop starting to find out the reason and starting troubleshooting before
trying to start the engine again. After the engine starts, take note of the meter reading for the oil
pressure gauge should show the pressure immediately. After the cold start, the engine should be
idling for
（
2
～
3
）
minutes instead of suddenly operating at high speed.
3.6 Engine operating
◆ After starting the engine, idle for （ 2
～
3 ） minutes before adding part of load. Only when the
water temperature is above 60 ℃ , the oil temperature is above 50 ℃ , and the oil pressure is higher
than the oil pressure seen in sheet 1-1,it is allowed to operate the engine at full load. Load and
speed increases should be gradual to avoid sudden loading and unloading.
◆
There might be air in the pipe of gas when the engine is started at the first time or after
long-term stop
，
which might cause the engine failed to start. It might be tried several times
，
and in
order not to affect the life of starting motor
，
starting time mentioned above must strictly obey.
◆
When the engine is in normal use, it is allowed to continuously operate it at rated power and
rated speed. After unloading, the engine should idle for 1 to 2 minutes before shutting down.
During operation, pay attention to the following parameters and the locations:
Main oil passage pressure: 450kPa ~ 650kPa under the rated condition;
Main oil passage temperature: 85
℃
~ 105
℃
;
Coolant outlet temperature: 75 ℃ ~95 ℃ ;
◆ Check the exhaust color to inspect the operation quality and load status of the fuel injector. If
there is a lot of black smoke or white smoke, stop the engine to check.
◆ Check the engine for air, water and oil leakages. If leakages are found, stop the engine to
exclude the leakages.
◆
Take notice of following items when running in a cold environment: