Danfoss Compressor MTZ022JC6OVE

08/24/2020

What do the refrigeration system overcooling and overheating mean

The so-called "supercooling" is to pass the condensed saturated liquid through a certain device (such as a subcooler) and method (or measure) to recool it so that its temperature is lower than the saturation temperature under the condensation pressure, which is called supercooling .

04/11/2024

12 Linear Servo Motor Manufacturers Worldwide

linear servo motor refers to a motor that can accurately control linear motion. It is one of the key components in linear servo systems and is mainly used in industrial production, healthcare, printing and packaging.

06/20/2020

Application advantages and working process analysis of air energy heat pump

Air energy heat pump is to use the energy in the air to generate heat energy. It can provide 24 hours a day with large water volume, high water pressure and constant temperature to provide the family with different hot water, cooling and heating needs, and at the same time can meet the above requirements with the least energy consumption.<img src="{{media url=&quot;Application_advantages_and_working_process_analysis_of_air_energy_heat_pump.jpg&quot;}}" alt="" />

06/14/2020

The reason for the failure of the multi-line air-conditioning compressor is revealed!

The failure of motor compressor (hereinafter referred to as compressor) can be divided into motor failure and mechanical failure (including crankshaft, connecting rod, piston, valve plate, cylinder head gasket, etc.). Mechanical failures often overload器2䀀
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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.

08/18/2020

Component maintenance method of water-cooled chiller

The central air conditioner of the water-cooled chiller is an important part of the entire central air-conditioning system. In order to ensure the normal operation of the air conditioner,

06/29/2020

Compression ratio of American Copeland compressor

09/01/2022

What is a Magnetic Contactor?

In many cases, the magnetic contactor is simply referred to as a contactor. It is an electrical appliance that uses the current flowing through the coil to generate a magnetic field to close the contacts to control the load in industrial electricity.

06/14/2020

The correct use of car air conditioners, to avoid misunderstandings!

The correct use of car air conditioners, to avoid misunderstandings! Whether it is cooling in summer or heating in winter, many car owners turn on the "air conditioning mode" while driving.

06/14/2020

Tips for energy saving in refrigeration systems

Tips for energy saving in refrigeration systems Screw refrigeration compressor When setting the cooling capacity of the compressor, avoid the operating range of low energy efficiency ratio; for the refrigeration system with a large range of operating co器2䀀
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