HITACHI VFD Frequency Converter SJ700-037HFEF2

09/17/2020

Application of industrial wireless remote control in industrial driving

The application of industrial wireless remote control in industrial driving 　　 Industrial wireless remote control technology mainly uses wireless transmitters to transmit human operation instructions to a remote receiving system through digital encoding and encryption. The receiving system restores the control instructions after decoding and conversion to achieve control of various mechanical equipment Control;

08/07/2020

Air source heat pump heating in winter

The air source heat pump is used as the cold and heat source of the central air conditioner. Its advantage is that one machine is used for two purposes.

07/18/2020

Calculation formula and calculation guide for industrial chillers

Low-temperature chiller refrigeration system operating conditions and adjustments Nowadays, chillers are widely used in the refrigeration industry, and the refrigeration working fluid is usually R22 (also R404a) and so on. In order to facilitate operation and maintenance and reduce the installation location, the refrigeration compressor

07/02/2020

Points to note when installing Taikang Compressor

Points to note when installing Taikang Compressor The air conditioner and cold storage can provide refrigeration without the credit of fluorine and compressor. Taikang Compressor is a common air conditioner and cold storage compressor with good quality and guaranteed.

08/25/2020

Epidemic prevention sampling isolation cabin put into use in Beijing, air-conditioned cooling, UV disinfection

The anti-epidemic sampling isolation cabin with ultraviolet antivirus function, air-conditioning, and stable temperature in the tent at 25 degrees Celsius has been put into use in the Tsinghua University Hospital.

06/14/2020

Magnetic suspension refrigeration technology is expected to become the mainstream trend of refrigeration in the future

Magnetic suspension refrigeration technology is expected to become the mainstream trend of refrigeration in the future "With the elaborate construction of data center refrigeration systems,

08/09/2020

How to debug the small cold storage during installation

1. Installation technology of expansion valve for small cold storage 　　 1. Check whether the temperature sensor is in good condition before installation; 　　2. The installation position of the expansion valve must be close to the evaporator, and the valve body should be installed vertically, not inclined or upside down;

06/14/2020

Refrigerating oil replacement operation method

Refrigerating oil replacement operation method One. Replacing the freezing oil without internal cleaning: The compressor performs the pumping action, recovers the system refrigerant to the condenser side (note that the minimum suction pressure of the 器2䀀
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06/29/2020

Suggestions for troubleshooting of compressor with liquid start

09/09/2020

How to choose the size of screw air compressor

Many users are purchasing screw air compressors for the first time. They have no experience in purchasing, and a large part of them do not know the machine very well. How to buy has become a headache for them. Several principles for users to purchase are as follows: