SAND Transmitter MT3013B-PF3/8"-155MPa-180

08/18/2020

Refrigeration compressor motor burnout detection and repair

The core component of the refrigeration system is the compressor. The faults of the motor refrigeration compressor (hereinafter referred to as the compressor) can be divided into motor faults and mechanical faults

09/10/2020

Air compressor lubricant replacement standard and market analysis

1. The selection criteria of air compressor oil 　　1) Oil selection: mineral oil, semi-synthetic oil, synthetic oil (synthetic oil is mainly PAO series) 　　2) Pour point: ≤-10℃ 　　3) Flash point: ≥180℃ 　　4) Acid value: 0.2 　　5) Performance requirements: good oxidation resistance, anti-emulsification, and less residual carbon

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

06/14/2020

Does the amount of refrigerant cause frost in the return air pipe and the compressor

As far as air conditioning is concerned, the principle of system circulation is generally the same as that of refrigerators and freezers. The symptoms of air conditioning systems lacking fluoride are similar to refrigerators and freezers. Many people say 器2䀀
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09/01/2020

Integrity and Self-discipline Voluntary Certification

Recently, two major events affecting the entire compressor industry have occurred one after another in the industry: First, the annual ComVac ASIA (ComVac ASIA) was successfully held in Shanghai.

09/16/2020

SKF bearing life theory and formula

For modern high-quality bearings, the nominal or basic rating life may be very different from the actual life in a particular application. In a particular application, the service life is affected by various factors, including lubrication, pollution degree, misalignment degree, correct installation and environmental factors.

07/11/2020

working principle

working principle The screw compressor uses a pair of core-yin and yin rotors to realize the continuous suction, compression, and exhaust of air. The active rotor has a 5-spiral spiral, and the driven rotor has 6 tooth slots. It adopts a unique tooth shape to produce High compression efficiency.

07/18/2020

Fault analysis and treatment of excessive oil consumption of the refrigeration compressor of piston chiller

Commonly used chillers are divided into piston type, screw type, centrifugal type, and vortex type chiller according to the type of refrigeration compressor used. Their evaporators and condensers generally use shell and tube heat exchangers, the throttling device uses thermal expansion valves, the refrigerant is freon

06/14/2020

How to solve the phenomenon that the low temperature of the high and low temperature test chamber cannot be maintained

First check whether the refrigeration unit of the high and low temperature box can be started during the operation of the high and low temperature test box. If the refrigeration compressor of the high and low temperature box can be started during the enti器2䀀
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06/14/2020

Air conditioning expansion valve

What is the principle of air conditioning expansion valve? The electronic expansion valve is a throttling element that can enter the refrigerant flow of the refrigeration device according to a preset procedure