Danfoss Compressor SH242B9AAG

09/04/2020

The focus of Chinese manufacturing transformation and upgrading

Chinese manufacturing industry has achieved world-renowned achievements in the thirty years of reform and opening up. With the development of Internet technology, disruptive innovation in the manufacturing sector is not only difficult to predict,

07/22/2020

Carrier screw compressor motor repair

Carrier screw compressor motor repair<br></br> <br></br> Performance characteristics<br></br> <br></br>  Use of chlorine-free refrigerant HFC-134a;<br></br> <br></br> 06N twin screw compressor achieves high full load efficiency;<br></br> <br></br>  Use flooded evaporator and condenser to enhance heat exchange efficiency;<br></br> <br></br>  Using electronic expansion valve, precise control;<br></br>

07/02/2020

Introduction of the models such as the MT-100 and other hermetic compressors

Introduction of the models such as the MT-100 and other hermetic compressors The picture shows the fully enclosed compressor MT-100, which is installed by the customer. Meiyou Le Maneurop hermetic compressor detailed introduction;

08/14/2020

Daily operating conditions of industrial chillers

Industrial chillers will have certain parameters for users to refer to during operation, which can be displayed through relevant instruments. It is possible to control and observe the various parameters of the industrial chiller during operation,

06/30/2020

Excessive head resistance will cause compressor to trip

Excessive head resistance will cause compressor to trip The existence of compressor failure does not seem to have much to do with the brand. In other words, whether it is a Hitachi compressor, a Copeland compressor, or another brand of compressor, as long as it is used for a long time, there will be some problems of failure. . Compressor tripping is a common fault. When this failure usually occurs, we should comprehensively look for the cause of the failure.

06/20/2020

What are the causes of air conditioning trip

What are the causes of air conditioning trip 1. The contradiction between the rated current of the air conditioner and the current carrying capacity of the wire. 　　Here are two formulas involved: 　　①The rated current of air conditioner I=P÷U ÷power factor, the power remains unchanged, the smaller the voltage, the greater the current required. 　　② The current carrying capacity of the wire I=U÷R, the voltage is proportional to the current. 　　 So when the power supply voltage is normal, we must consider the line voltage drop. The longer the line, the greater the resistance, the greater the voltage drop, and the smaller the output current at the end. However, because the power of the load remains unchanged, the voltage becomes smaller, and the current that needs to be output will be larger. At this time, the wire is forced to overload, and the time will cause heating, and eventually cause the tripping of the open circuit. 　　 Some friends said that the heat of the wire will not cause the tripping of the circuit breaker. In fact, the manufacturer of the air switch has made it clear in the relevant manuals that the heat of the wire will cause the air switch to trip. Because the wire heats up, the crimp terminal will also heat up, and the resistance will become larger and larger. The larger the resistance, the greater the current consumption, and the hotter it will be, a vicious cycle. 　　 2. Leakage 　　During the daily maintenance work, we will encounter the situation that the air circuit trips due to the leakage of electricity. At least I have not experienced it once or twice. Regardless of the leakage of the neutral line or the leakage of the live line, a long time will cause the circuit breaker to trip. 　　Why does the electric leakage cause the MCB to trip? There are two situations. 　　 ① Good grounding. At the beginning, the leakage current was not large, and as time went by, the leakage current became larger and larger, and eventually evolved into a short circuit to ground, unable to close. 　　②There is no ground wire. If the equipment is not connected to the protective ground, when the wire leaks to the equipment, it is equivalent to adding a large shunt resistance. Like this problem, if the air conditioner does not have a ground wire, when the wire leaks to the air conditioner, the air conditioner is a very large shunt resistor and will consume a lot of current. Eventually, the wire will heat up or trip open. 　　How to determine whether the trip caused by the above two aspects can be done with a clamp ammeter. 　　 ① Measure the voltage at the input and output to see if there is a significant change in voltage drop. 　　②Measure whether the output current exceeds the standard. 　　 So my suggestion is: first measure the supply voltage to see if it is within the allowable fluctuation range. Then measure the current to see if it exceeds the rated ampacity of the wire. Finally, check the data one by one according to the measured data to find out the reason.

06/29/2020

What is the cause of compressor pipeline vibration

08/18/2020

Common faults and maintenance methods of air-cooled chillers

Air-cooled chillers are installed outdoors without any obstruction, and are easily affected by outdoor light. So how to maintain good ventilation, good environment and space has a key impact on the cooling effect of the chiller.

10/23/2025

Why Refrigeration System Clogged

The blockages in the refrigeration system include ice, dust, oil and welding blockage, etc.

07/20/2020

Before replacing the compressor, remember to do 10 things first, remember

Before replacing, you must check the cause of the damage to the original refrigeration compressor and replace the defective parts. Because damage to other components will directly cause damage to the refrigeration compressor, remember!