Inspection before Starting Diesel Generator
by Starlight Generator dieselgeneratortech1. Check whether the surface of
the generator set is cleaned thoroughly, and if there is any loosening of the
nuts of the ground nuts, flywheel screws and other sports parts, the problems
can be found to be strong in time.
2. Check that all parts of the clearance are
correct, in particular, carefully check the intake, exhaust valve clearance and
pressure relief mechanism clearance to meet the requirements.
3. Put each cylinder in the
pressure reducing position, rotate the crankshaft to check if there is any
abnormal sound in the operation of each cylinder, and whether the crankshaft
rotates freely. At the same time, pump the engine oil into the friction
surface. Then, turn off the relief mechanism, shake the crankshaft, and check
if the cylinder is leaking. If shakes the crankshaft, the feeling is very
laborious, indicating compression is normal.
4. Check the fuel supply system.
A. Check that the vent holes in
the fuel tank cover are clear and clean diesel generator set if there is dirt
in the hole. Check that the added diesel engine is in accordance with the
required license plate, fuel quantity is adequate, and turn on the fuel circuit
switch.
B. Open the relief mechanism
swing crankshaft, each cylinder should have a crisp injection sound, indicating
good injection. If the injection is not heard, there may be air in the oil
path. At this time, we can loosen the diesel oil filter and injection pump air
releasing screw to eliminate the air in the oil path.
C. Check for oil leakage in the
tubing and joint, and solve the problem in time.
D. Add oil to the fuel injection
pump and governor to the specified oil level.
5. Check the
cooling system
A. Check that the cooling water
in the tank is adequate. If the water is insufficient, clean soft water should
be added.
B. Check the water leakage at the
water pipe joint and solve the problem in time.
C. Check that the impeller rotation of the cooling pump is flexible and that the belt is tight and appropriate.
6. Check the lubrication system.
A. Check the oil pipe and pipe joints for oil leakage and
solve the problem in time.
B. Fill the buttered nozzle with
the specified grease.
C. Check the oil content of the
oil pan, draw out the oil gauge next to the crankcase, observe where the height
of the oil surface conforms to the prescribed requirements, and add the
specified number of oil with different seasons and regions. During inspection, if
the oil level is above the specified height, the reasons for the increase of
oil should be carefully analyzed. There are usually three reasons.
1) Excessive addition of oil.
2) The diesel oil leakage into
the crankcase and flushed the oil.
3) Cooling water leaking into
engine oil.
7. Check the electrical start
system
A. First, check whether the relative density of the starting battery electrolyte is in the range of 1.240-1.280, if the relative density is less than 1.180, it shows that the battery is insufficient.
B. Check for accumulative contamination or oxidation on the battery pole, it should be polished clean.
C. Check for accumulative
contamination or oxidation on the battery pole, it should be polished clean.
D. Check that electrical contacts
such as starting motors and electromagnetic manipulators are in good condition.
Precautions in diesel engine use
and preparation and nursing before starting.
The following inspection work
should be done before starting the diesel engine.
(1) Check that all parts of the
diesel engine are normal, the attachment connection is not reliable.
(2) Check if the coolant is full.
(3) Check if the oil level in the
diesel engine oil pan is at the specified position of the oil level.
(4) Check the adequacy of diesel
in the tank.
(5) Check that the connections of
the diesel engine starting system are correct and that the battery charge is
sufficient.
(6) Use a pre-pump on an oil pimp
to press the fuel oil into the fuel system and unscrew the exhaust screw on the
fuel injection pump. Or unscrew the exhaust screw plug on the fuel oil filter,
remove the air from the fuel system until the oil from the outlet continues to flow
without air bubbles and tighten the exhaust screw or the outlet screw plug.
Then continue pumping until the return tubing has returned oil, the pump will
tighten.
(7) For a new engine or a diesel
engine with 5 or more unused engines, the crankshaft should be rotated 3/5
revolutions before starting.
(8) For a diesel engine with
half-hour parking as an emergency, the engine can be started quickly in order
to save for urgent use. In the period of stopping, every 3 to 5 minutes should
start up to water and the oil temperature is more than 60 ℃.
(9) In order to make the diesel
engine start smoothly, the engine room temperature should not be lower than 10 ℃.
After all the preparatory work
before the start of the diesel engine is finished, when the engine starts at
room temperature, it is only necessary to press the start button. At this
point, the gear of the starting motor enters the gear ring of the flywheel and
starts to rotate. Under normal circumstances, it takes only one time to start a
diesel engine. If a small start is successful, a second start must made after
the starter has stopped turning, and the starting time should not exceed 5
seconds at a time. The second start time interval should be not less than 2
minutes. For models with preheating devices when the ambient temperature is
less than 10 ℃ and the cold starting system is
required, press the preheat button and hold it for 20 to 40 seconds so that the
air heater can be electrified and then immediately started.
After starting successfully, the
user can continue to preheat the intake for 20 to 40 seconds as needed, so that
the intake can continue to be preheated during the heating process of the diesel
engine. In this way, the exhaust white smoke and the wear of the moving parts
can be reduced during the starting process. In addition, when using the cold
starting device mentioned above, the user can also use the low temperature
starting fluid to spray the inlet of the supercharger when it is impossible to
start at low temperature because of the failure. At the same time, the diesel
engine can start quickly at low temperature. The initial speed of diesel engine
should be 600-750 r/min. After starting, we should pay close attention to the
readings of the instruments on the dashboard, especially the oil pressure
gauge, and then check the diesel engine parts to see if there are ant
anomalies, and begin to remove them.
We can provide Cummins, Perkins, Volvo, Deutz, Ricardo, Yuchai, SDEC, Weichai, Ricardo and Wuxi diesel generating sets.
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Created on Oct 29th 2018 04:13. Viewed 270 times.