JUNTUO Tool for Metal Cutting φ2.4×D4×15×50

05/06/2025

What is the difference between inverter air conditioner and fixed frequency air conditioner

1. What is inverter air conditioner? Frequency conversion means that the frequency is variable and adjustable. Compared with traditional air conditioners, the generation of frequency conversion air conditioners is due to the rapid development of power el器2䀀
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08/20/2020

Precautions for the selection of fan coils for large central air conditioners

The fan coil unit is an important component in a large central air-conditioning system. Its selection will directly affect our usage, such as cooling effect, power consumption, noise impact, etc.

07/05/2020

Hitachi screw compressor failure case

Hitachi screw compressor failure case The author summarizes the case of Hitachi screw compressor maintenance and replacement bearings, and shares the data, please send it to a friend to collect and forward it for use

08/02/2020

Which type of refrigerant is generally used for household air conditioners

At present, due to global warming, people use air conditioners more and more frequently, but not all users are familiar with the types and use of air conditioner refrigerants.

06/14/2020

Trouble analysis and elimination of piston refrigeration compressor

Trouble analysis and elimination of piston refrigeration compressor Trouble analysis and elimination of piston refrigeration compressor 1) Large oil consumption of compressor 　　 Reason: The gap between the bearing, oil ring, cylinder and piston器2䀀
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07/30/2020

Causes and troubleshooting of industrial chillers

1. High condensing pressure (higher than the specified value) failure causes and remedies:<br></br> 　　①There is non-condensable gas in the system: release non-condensable gas.

06/14/2020

Don't be afraid if the refrigeration system is clogged. Here are retrieval and cleaning methods

Don't be afraid if the refrigeration system is clogged. Here are retrieval and cleaning methods Typical features of clogging 1. The refrigerator or air conditioner does not cool for a long time. 2. The suction pressure drops, and even a vacuum statﰸ2䀀
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06/23/2020

What to do if the refrigerator does not cool in winter

1.If it is because of the weather, you need to change the refrigerator to another location. 2. When used in winter, you can turn on a compensation switch in the refrigerator. 3. It is necessary to check whether the compressor is damaged. 4. If the modulation gear is incorrect, you can adjust the gear higher. 5. If the refrigerant is not enough, the problem of non-refrigeration can be solved after the fluorine content is added.

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

09/06/2020

Air filter manufacturers introduce you to several common materials of filter cotton

Filter cotton can be divided into G1, G2, G3, G4, F5 grades according to the filtration efficiency, and according to different materials, it can be divided into 4 types: synthetic fiber filter cotton, non-woven filter cotton, glass fiber filter cotton, and activated carbon filter cotton.