Siemens Transmitter 7ML5601-1AA11-1AA0
Type: Transmitter
Brand: Siemens
Type: Transmitter
Brand: Siemens
Type: Transmitter
Brand: Siemens
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Rechi Compressor 44R273A
MINDMAN Air Cylinder MCQV2-11-40-200
Mitsubishi Compressor YB645WTG
CHANGHONG Air Conditioner KFR-72LW/Q2C
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02/09/2022
As hot summer is coming, air compressor maintenance workers will also usher in the busiest season of the year.
06/20/2020
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.
09/06/2020
Compared with other production-oriented industries, food safety is more important in the food industry. When choosing an air compressor, choose oil-free air compressors, which are also screw type, in order to ensure product quality.
08/18/2023
Solar assisted heat pumps are gaining popularity as an eco-friendly alternative to traditional heating systems.
09/07/2020
The gas storage tank is a part of the post-processing equipment of the air compressor, which mainly plays the role of gas storage, buffering, pressure reduction, and drainage. It will inevitably cause corrosion in the air, rain or humid atmosphere after long-term use or use for many years.
08/13/2020
In the industrial chiller system, when the compressor sucks in wet steam, frost occurs on the cylinder wall, and the suction temperature and discharge temperature drop significantly. This is the wet stroke of the compressor, commonly known as frost.
06/27/2020
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.
11/17/2022
As for an axial fan, the air flows parallel to the axis of the fan. It has a wide range of uses, such as electric fans, outdoor fans of air conditioners.
05/09/2022
Before removing the valve body from the bottom of the transmission, take extra care when removing the flat wire of the external solenoid valve.
06/14/2020
Regardless of the room temperature, as long as the air conditioner is in the cooling mode and is in a working state, the wind blown out is cold wind. To put it bluntly, the temperature of the blown air is determined by the operation mode of the air condit 器2 䀀 ᅵ皥 䖒皦즠Ʋ煔क़ 㲈Ʋ 䌁皦 ᮔDž༬皧煞क़Ѐ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 瑉浥