Danfoss Compressor SY300A4RZ

06/29/2020

Compression ratio of American Copeland compressor

12/27/2023

Troubleshooting the "Air Conditioner Fan Not Spinning But Hums" Issue

When your air conditioner's fan refuses to spin but emits a distinctive hum, it can be a frustrating and perplexing situation.

02/10/2025

Battle of Giants - Differences of PLC by Siemens, Allen-Bradley and ABB

Many industrial equipment manufacturers in the world are producing PLC. The product and market competition between different companies is unavoidable.

07/22/2020

The adjustment principle of the screw compressor slide valve is actually very simple!

Today, I will tell you about the maintenance example of the poor cooling effect of the air conditioner.<br></br> <br></br> 1. The cooling is poor, and the operating frequency is not up to the highest. The exhaust pipe overheating code will be displayed for about 20 minutes.<br></br>

08/11/2020

How to solve various problems such as water leakage, noise, and excessive fluorine leakage of air conditioners

When the air conditioner is in use, there are problems such as water leakage, electric leakage, insufficient cooling and heating, excessive noise, etc., which makes the friends feel particularly heartbroken. Buying an air conditioner to solve this problem and that problem is a headache.

08/04/2020

Full analysis of air conditioning automatic control system<br></br>

Which parts of the central air-conditioning system need to be equipped with automatic control?<br></br> Answer: It mainly includes two parts: the host part of the cold and heat source and the end equipment part, which need to be equipped with automatic control systems

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.

09/02/2020

The working principle of air compressor

The working principle of air compressor<br></br> working principle<br></br> 　　 (1) Piston air compressor<br></br>

08/16/2020

Air energy heat pump heating, what installation and use details need to be paid attention to

In the recent period, the term "coal to electricity" has frequently appeared in the vision of the broad masses of people. The reason is that many areas in Beijing, including Chaoyang, Haidian, and Tongzhou, have announced the results of the "coal-to-electricity" winning bid.

03/10/2021

Servo driver related parameter setting method

Position feedforward gain: set the feedforward gain of the positioning loop. The larger the set value is, the smaller the position delay isand the larger the feedforward gain of the position loop is, the high-speed response of the control system will rise, but the position of the system is unstable and prone to oscillation. When high response characteristics are not required, this parameter is usually set to 0, indicating the range of 0 ~ 100%.