Panasonic Reduction Drive Gearbox Speed Reducer M7GA20B

05/09/2025

Air Conditioner Compressor: How It Works, Functions, Troubleshooting＆Maintenance

The air conditioner mainly relies on the work of the air conditioner compressor (AC compressor) to achieve the cooling cycle.

09/05/2020

Air compressor and compressor are not the same thing

I wonder if you have such a misunderstanding: an air compressor is a compressor. In fact, there is still a big difference between the two. Make some summary comparisons between the two (including manufacturers).

09/07/2020

The working principle of the frequency converter

The main circuit is the power conversion part that provides the voltage and frequency power supply for the asynchronous motor. The main circuit of the frequency converter can be roughly divided into two categories:

06/17/2025

How to Make a Fan Blow Cold Air?

In summer, in some specific places, or some economically constrained families, people have no air conditioning but only fans. When it’s especially hot, some people find that the fan wind gets hotter and hotter, which can't cool at all.

06/27/2020

The sign of the normal operation of the refrigeration unit

The sign of the normal operation of the refrigeration unit 1. There is no knocking sound in the piston refrigeration compressor, the compressor is operating normally, the expansion valve opening is adjusted properly, and there is only compressor suction and exhaust sound during operation, and no knocking or other abnormal sounds are produced.

07/07/2020

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

01/29/2024

The Role of UPS and How to Solve Its Heat Dissipation Problem (UPS Cooling Fan)

(Uninterruptible Power Supply) is a power supply that contains an energy storage device. It is mainly used to provide uninterrupted power for some equipment that requires high power supply stability, such as a single computer, computer network system

07/07/2020

What are the main faults of the compressor How to replace it if it is broken

Is the semi-closed screw compressor going up or down The views of these companies coincide In January and February, when the epidemic was the worst, many people in the industry worried whether this year's market would be "cold"!

07/18/2020

Explanation of the excellent performance of each component of the screw chiller

　The application of screw refrigeration compressors is becoming more and more common, and some of them have entered the period of frequent failures. When the abrasion of the female and male rotors, body, and exhaust end seat of the refrigeration compressor reaches above 0.65rnm, vibration will occur when the refrigeration compressor is running, the sound is abnormal, the cooling capacity is reduced, and the compressor cannot work normally.

08/20/2020

Strategy丨Common failures and maintenance of piston refrigeration compressors

1. The refrigeration compressor cannot start normally 　　Overhaul ideas 　　 1. Firstly, check whether it is caused by low power supply voltage or poor motor circuit connection.