Dry Goods | Sany Excavator Air Conditioning Compressor Tips

It's getting hotter and hotter，Air conditioners for Excavators are used more and more frequently.。Correct maintenance and use of air conditioning Compressor，Not only can it help you resist the hot summer，It can help you extend the service life of the air conditioner.，Come and learn with our senior R & D engineers.！

Compressor is one of the four core components of air conditioning.，It carries the core work.，It's for the air conditioning system.“ Heart ”。The Compressor is driven by the engine belt to obtain power，Vaporized low temperature is sucked from the evaporator/Low pressure refrigerant，Compressed and converted into gaseous refrigerant with high temperature and high pressure，And sent to that condense.。

The compressor is a high-speed moving part.，When moving, friction will produce high temperature.，Requires refrigerant oil lubrication。The following problems will occur if it is used improperly or not maintained for a long time.：The compressor is stuck、Internal carbonization、Burn out and so on。

Compressor damage is mostly due to insufficient lubrication，It is mainly divided into the following points.：

1. Insufficient lubrication caused by insufficient refrigerant：Refrigerated oil and refrigerant circulate together in the air conditioning system，And spray to that moving part of the compressor in a mist state.，Play a lubricating role.，Therefore, when the amount of refrigerant is insufficient,，The amount of refrigerant oil flowing into the compressor is also reduced，Insufficient lubrication occurs。2. Liquid slugging caused by the inflow of liquid refrigerant：When the engine is started at high speed，When the air conditioner is just turned on, the refrigerant oil in the compressor flows out instantaneously，The refrigerant on the low pressure side flows into the compressor, Even the refrigerant oil applied to the friction surface of the moving part is washed away.，Before refrigerant oil circulation of compressor，Drive without lubrication。3. Insufficient lubrication caused by blockage of refrigerant circuit：Inject refrigerant in the state of insufficient vacuum，Moisture in the air remaining inside the system，Causing ice blockage of expansion valve，Instantaneous blockage of the circuit，Compressor start without lubrication，Insufficient lubrication or stuck function。4. Phase Separation and Movement of Refrigerant Oil in Compressor：Due to the new refrigerant(R-134a)The characteristics of，When transported or stored for a long time， With the deviation of outside air temperature，Phase separation of refrigerant and refrigerant oil occurs，But also due to the movement of the refrigerant oil,，When the air conditioner is just turned on, only the refrigerant enters the compressor，Insufficient lubrication occurs。So，Want to make the air conditioning system smoother?，Compressor works longer，Regular maintenance checks and proper use of the air conditioner are required.：1. Check whether the refrigerant is missing in time when the refrigeration performance is insufficient.，Ensure that the refrigerant is sufficient；2. When filling the refrigerant, the vacuumizing time shall be more than 30 minutes.，Keep the system free of excess water；Do not add too much or too little refrigerant，Ensure proper pressure value；3. Periodically during the winter non-use period(Once every two weeks)Start the air conditioner at idle speed，Circulate refrigerant and refrigerant oil smoothly；4. Do not turn on air conditioning for a long time(More than two weeks)，When using the air conditioner for the first time，Start the engine at idle speed and maintain for 5 minutes.；5. When repairing and replacing the components of the air conditioning system, some refrigerant oil should be added properly.。

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