How to Shut Down Diesel Generator
by Starlight Generator dieselgeneratortech1. Before stopping, first remove the load, then adjust the adjuster handle, gradually reduce the speed to about 750r/min, and then 3-5 minutes after the operation, then turn the stop handle to stop, try not to load the diesel generator set at full load as soon as possible. Stop to prevent accidents such as overhearing.
2. For a 12-cylinder V-type
diesel engine, the electric key should be turned from left to intermediate
position after shut down to prevent battery current from flowing back. When
running in cold areas and need to stop, immediately open the drain valve on the
side of the body, fresh water pump, oil cooler (or cooling water pipe) and
radiator, and drain the cooling water to prevent freezing cracks. If you use
antifreeze coolant, you do not need to open the drain valve.
3. For diesel engines that need to be stored for a long time, the last time the machine is shut down, the original oil should be drained, replaced with sealed oil, and then stored from about 2 minutes for sealing. If antifreeze coolant is used, it should also be released.
4. In case of emergency or special circumstances, in order to avoid serious accidents in the diesel engine, an emergency stop can be taken, and the emergency stop handle can be directly dialed.
Precautions for the use of the emergency stop button of the diesel generator set
The emergency stop button of the
diesel generator set is a button that needs to be pressed when the generator
set fails to stop normally when the generator set encounters a sudden situation
or when there is an unexpected situation with the electric load. When the
machine is stopped, it should be reset. It should be pressed for a long time.
If it is pressed for a long time, it will definitely not start when the second
should immediately press the emergency stop button?
1. The cooling water temperature
or oil temperature rises sharply.
2. Oil pressure gauge pointer
suddenly drops or no pressure.
3. Abnormal knocking sounds
occurred in the operation of the diesel generator set, the flywheel was loose
or the transmission mechanism was seriously abnormal.
4. The speed is automatically
increased and there is a flying phenomenon.
5. A flammable and explosive
latent accident occurred on the site of the diesel generator set.
6. The diesel line is broken,
parts are damaged or moving parts such as piston and governors are stuck.
What should be paid attention to when the generator set is shut down?
1. The engine should be idling
for a few minutes before stopping.
It is important to let the engine
idle for 3 to 5 minutes before stopping, so that the lubricating oil and
cooling water can take away heat from the combustion chamber, bearings and
shafts. This is especially important for turbocharged engines.
The bearings and oil seals in the turbocharger are subject to the high temperature of the exhaust. When the engine is running, this hear is taken away by the circulating oil, but if the engine suddenly stops, the supercharger temperature may rise by as much as 56 °C. the result of overhearing will cause the bearing to jam or the oil seal to fail.
2. Do not let the engine idle for too long
Long idle operation is
detrimental to the engine because the combustion chamber temperature is too
low, making impossible for the fuel to burn completely. This will cause
deposits that can clog the injector orifices and piston rings and may cause the
valves to become stuck.
If the temperature of the engine coolant becomes too low, some unburned diesel will flush the oil on the cylinder wall and dilute the oil in the crankcase, so that all moving parts in the engine are poorly lubricated.
If the engine is not in use, it should be stopped.
3. Turn the key switch to the off
position to turn off the engine
For engines with electric
shut-off valves, the engine can be completely shut down by turning off the key
switch or by turning the manual valve. The key switch controls the electric
shut-off valve. As long as the manual control knob on the shut-off valve is not
locked in the open position, turning off the key switch always stops the
engine. If you use the manual control knob on the electric shut-off valve, turn
the knob counterclockwise to turn the engine off. The valve cannot be re-opened
with the key switch before the engine is completely down.
Note:never place the key switch or control knob in
the open position or in the operating position when the engine is stopped. The
high fuel tank will cause diesel to flow into the cylinder, causing hydraulic
locking.
4. Stop any engine immediately if ant part is faulty.
In fact, all faults always give
the operator some warning before the part fails and the engine is damaged. Some
alter and experienced operators noticed the alarm signal (a sudden drop in oil
pressure, abnormal sound, etc.) and immediately stopped the engine, thus saving
many engines.
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Created on Dec 17th 2018 00:49. Viewed 293 times.