Screw compressor is composed of a pair of parallel, meshing each other's female and male screw, which is the most widely used in rotary compressor. Screw machines have very powerful features compared to other types of refrigeration compressors. However, the screw machine needs to be maintained after running for a period of time. Next, please follow the central air conditioning maintenance Xiaobian to have a look!

First, the characteristics of screw type refrigeration compressor

Different from the reciprocating displacement of the piston compressor, the screw compressor is a rotary displacement compressor. Compared with piston compressors, screw refrigeration compressors have the following advantages:

1, small volume, light weight, simple structure, fewer parts, only equivalent to 1/3 ~ 1/2 of the piston compressor;

2, high speed, single cooling capacity;

3, less wearing parts, easy to use and maintenance;

4, smooth operation, small vibration;

5, single stage pressure ratio is large, can be used at low evaporation temperature;

6, low exhaust temperature, can work under high pressure ratio;

7, not sensitive to wet stroke;

8, the cooling capacity can be stepless adjustment between 10% and 100%;

9, easy to operate, easy to achieve automatic control;

10, small size, easy to achieve the unit.

Two, screw machine maintenance should comply with the basic guidelines

1, according to the differential pressure switch, or differential pressure indicator information instructions to select the maintenance time. Regular on-site inspection or cleaning can sometimes do more harm than good. Because there is a risk that the filter element is damaged, causing dust to enter the engine.

2, it is recommended to replace, rather than clean the filter element, so as to prevent damage to the filter element and maintain the engine to a large extent.

3, when it is necessary to clean the filter element, special attention should be paid not to wash the filter element.

4, please note that the peace core can not be cleaned, only replaced.

5. After maintenance, use a wet cloth to carefully wipe the inside of the shell and the sealing surface. Classification of air filters Classification of air filters: divided into vertical and horizontal two.