To operate Perkins generator smoothly in winter, some things need to be noted. For example, a
low temperature start method, a choice of lubricating oil, a need for a water
jacket heater, and the like. Please refer to the following information for
details.
The low fuel temperature
in winter makes the viscosity of diesel oil increase and the fluidity
deteriorates, which causes the diesel to be difficult to spray, resulting in
poor atomization and even deterioration of combustion, which makes the diesel
engine's power and economic performance decline. Therefore, light diesel oil
with low freezing point and good ignition performance should be selected in
winter. It is generally required that the freezing point of diesel engine
should be lower than the local current season temperature 7 - 10°C.
Use an open flame to
start the machine where the temperature
is too low, but do not remove the air filter. After the cotton yarn is ignited
on the diesel oil, the igniter is placed in the intake pipe to perform the
combustion-supporting start. In this way, during the starting process, the
external dusty air will be directly sucked into the cylinder without filtering,
causing abnormal wear of pistons, cylinders, etc., and the emergency standby
Perkins generator set will be rough and damage the machine.
If the water is
discharged too early or does not discharge cooling water, the generator will
run at idle speed before stopping. When the temperature of the cooling water
drops below 60°C, the water is not hot, turn off and discharge water. If the
cooling water is released too early, the body will suddenly shrink and crack
when it is attacked by cold air at a high temperature. When releasing water,
the remaining water in the body should be drained to prevent it from swelling
and causing the body to burst. It is recommended that the generator set user use
antifreeze in any season. Because the antifreeze not only acts as a cooling,
but also protects the diesel engine.
Selection of lubricating
oil. The oil with low freezing point should be used in winter. When starting,
the temperature of the oil can be increased by using the external water bath
heating method. It is not recommended to use an open flame to avoid deterioration
or even burning of lubricating oil in the oil pan, which will cause lubrication
performance to reduce or loss, and aggravate the wear of the machine.
To start the generator
set in winter, a water jacket heater should be assembled to the generator to
keep the machine "body temperature" and easy to operate. Some
operators to start Perkins generator, often use no water start (start first,
then add cooling water) abnormal start method. This practice will cause serious
damage to the machine and should be prohibited. The correct preheating method
is: firstly cover the heat preservation hood on the water tank, open the drain
valve, continuously inject 60-70°C clean soft water into the water tank, and
touch the water flowing out of the drain valve, if you feel the water is hot,
close the drain valve, and then start again.
Low temperature load
precautions. After the emergency backup Perkins generator set started to fire,
some operators could not wait to put into the load operation. Diesel engine
that is on fire for a short time, because of the low temperature of the body,
the viscosity of the oil is large, and the oil is not easily rushed into the
moving friction surface, causing serious wear and tear on the machine. In
addition, the plunger spring, the valve spring and the injector spring are also
easy to break due to "cold brittleness". Therefore, after the diesel generator starts to catch fire in winter, it should be idling at low and medium
speed for a few minutes, and the temperature of the cooling water reaches 60°C,
and then put into load operation.
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