CASAPPA Hydraulic Motor KM 40•63
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08/19/2020
Purchase must see! How to distinguish between original refrigeration compressor and second-hand refrigeration compressor
At present, illegal businesses on the market often use second-hand or refurbished or offline refrigeration compressors to make industrial chillers in order to make huge profits.
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01/18/2022
Transmitter Common Faults & Diagnosis Methods
Transmitter faults mainly include complete fault, bias fault, shifting fault, and precision degradation fault. This is shown in figure 2.
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08/05/2020
In the hot summer, be wary of the 5+X hidden dangers of cold storage
With Chinese economic and social development and the continuous improvement of people’s living standards, the cold chain logistics industry has obtained unprecedented development opportunities.
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07/02/2020
In the post-new crown era, what are the market opportunities for refrigeration companies
In the post-new crown era, what are the market opportunities for refrigeration companies When we thought that the fear and anxiety caused by the new crown epidemic were going away, when we set up stalls in full swing to prepare for the development of the night economy, the small-scale counterattack of the new epidemic in Beijing made the originally slightly relaxed nerves tense again.
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06/19/2020
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.
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09/16/2020
Transformation project of frequency converter to air compressor
1. Brief description of working principle of air compressor: The working principle is that a pair of male and female rotors (or screws) that are toothed parallel to each other rotate in the cylinder, so that the air between the rotor teeth continuously produces periodic volume changes, and the air is transported from the suction side along the rotor axis.
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08/19/2020
5 common causes of refrigeration system failures and solutions
1. The suction temperature is too high-mainly caused by the increase of suction superheat. Note that high suction temperature does not mean high suction pressure, because the suction is superheated steam.
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07/26/2020
The return pipe and compressor of cold storage are frosted. Why?
Yesterday, the reason for the frosting of the air-conditioning compressor and the compressor was released. Someone left us a message. I hope we can analyze the reasons for the frosting of the return pipe of the cold storage and the compressor.<br></br>
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08/11/2020
The role of these parts in cold storage construction
Speaking of cold storage, we must all know that in the field of food in our daily life, it brings us not only convenience in life, but also health and safety. Everyone knows that any piece of equipment will need a lot of large and small parts,
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08/12/2022
Advantages, disadvantages and applications of linear motors
Before the advent of practical and affordable <strong>linear motor</strong>, all linear motion had to be converted from rotating machinery through the use of ball or roller screws