Necessity of regular maintenance of diesel generator sets

Diesel generator sets are the providers of emergency backup power after mains failures. Most of the time, the generators are in stand-by standby mode. Once the power is cut off, the generators are required to “start in an emergency and supply power in an emergency,” otherwise the standby units will lose meaning. How can we achieve this goal? Practice has proved that: strengthening daily maintenance is the most economical and effective method, because the flight crew is in a static state, and various materials of the unit itself will undergo complicated chemical and physical changes with oil, cooling water, diesel oil, and air. , which will "stop the bad" unit.

1, the unit start battery failure

The battery is unmaintained for a long time, and the electrolyte is not replenished in time after the water evaporates. The battery charger is not configured. The battery will be discharged after a long period of natural discharge, or the used charger needs to be periodically charged and floated. Due to the negligence of the switching operation, the battery power can not meet the requirements, in addition to the configuration of high quality chargers, the necessary inspection and maintenance is necessary to solve this problem.

2. Water enters the diesel engine

As the condensation of water vapor in the air occurs, water droplets are attached to the inner wall of the fuel tank and flow into the diesel. As a result, the moisture content of the diesel exceeds the limit. This diesel enters the engine high-pressure pump, which can rust the precision coupling components. Plunger, serious damage to the unit, regular maintenance can be avoided effectively.

3, the maintenance period of oil (two years)

The oil of the engine is a mechanical lubrication, and the oil also has a certain retention period. For a long time storage, the physical and chemical properties of the oil will change, causing the lubrication condition of the unit to deteriorate during operation, which will easily lead to the damage of the unit parts, so the oil should be replaced regularly.

4. Replacement cycle of three filters (oil filter, machine filter, air filter, water filter)

The filter acts as a filter for diesel oil, oil, or water to prevent impurities from entering the body. Oil and impurities in the diesel oil are also unavoidable, so the filter plays an important role in the operation of the unit, but At the same time, these oils or impurities are also deposited on the filter wall, which causes the filter capacity of the filter to decrease, excess deposition, and the oil passage will not be able to open. As a result, when the oil machine is loaded, it will be shocked by the inability to supply oil (as if it were missing Oxygen), so in the normal use of the generator set, we recommend that: First, the common unit replaces the three filters every 500 hours; second, the replacement unit replaces the three filters every two years;

5, cooling system

Pumps, water tanks and water pipelines have not been cleaned for a long time, so that the water circulation is not smooth, the cooling effect is reduced, the water pipe joints are good, water tanks, waterways are leaking, etc. If the cooling system is faulty, the consequences are: First, cooling If the effect is not good and the water temperature in the unit is too high, the Weixin unit is the most common. Secondly, the water tank leaks and the water level in the tank drops. The unit will also fail to work properly. (To prevent the freezing of the water pipe when the generator is used in winter We recommend installing a water heater in the cooling system.

6, lubrication system, seals

Due to the chemical properties of the lubricating oil or oil ester and the iron scrap generated after mechanical wear, these not only reduce its lubricating effect, but also accelerate the damage of the parts. At the same time, due to the lubricating oil has a certain corrosive effect on the rubber seal ring, the other oil seal It is also aging at any time so that its sealing effect is reduced.

7, fuel, gas distribution system

The output of the engine power is mainly that the fuel is burned in the cylinder to do work and the fuel is ejected through the nozzle. This causes the coke after combustion to deposit on the nozzle, and the amount of fuel injected by the injector will be affected by the deposition amount. Impact, lead to inaccurate timing of injector ignition advance, engine cylinder fuel injection is uneven, the working status is not stable, so regular cleaning of the fuel system, replacement of the filter parts of its oil supply, matching The adjustment of the gas system makes it uniform.

8, the control unit of the unit

The control part of the oil machine is also an important part of the maintenance of the unit. The unit is used too long, the line connector is loose, and the AVR module is working properly.