Schneider VFD Frequency Converter ATV71LD33N4Z

08/24/2020

Do cold storage maintenance, you must understand this knowledge!

1. "Three Preventions" of the Refrigeration System 　　 1. Prevent the evaporation temperature from being too low 　　 The increase in the temperature difference between the evaporating temperature and the warehouse temperature will make the evaporating temperature too low

07/07/2020

What are the main faults of the compressor How to replace it if it is broken

Is the semi-closed screw compressor going up or down The views of these companies coincide In January and February, when the epidemic was the worst, many people in the industry worried whether this year's market would be "cold"!

08/24/2020

Popular science the advantages of water source heat pump central air-conditioning

Water source heat pump technology can use the low-level thermal energy resources formed by the absorption of solar and geothermal energy from the shallow water sources on the earth's surface

07/07/2020

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

08/18/2020

Commercial refrigerator industry definition and product classification

Commercial refrigerators are the product of the market economy. With the development and growth of major beverage, ice cream, and quick-frozen food manufacturers, the market scale continues to expand

06/28/2020

Precautions for installation and use of compressor-type car refrigerator

Precautions for installation and use of compressor-type car refrigerator A car refrigerator is a refrigerator that can be carried on a car. Car refrigerator is a new generation of cold storage appliances popular in the international market. Compressor car refrigerators are similar to household refrigerators. They are all cooled by compressor power. The refrigeration is fast and powerful. The refrigeration can reach -18 ℃. It can make ice and keep fresh

08/07/2020

Working principle of frequency converter

　Inverters can be divided into voltage type and current type inverters.<br></br> 　　 Voltage type is an inverter that converts the DC of a voltage source to AC. The filtering of the DC loop is a current type that converts the DC of the current source to AŒ

08/15/2020

How to manage the temperature after the cold storage is built

After the cold storage is built, the temperature in the cold storage must be better adjusted. This content is actually very important, but the corresponding precautions should also be grasped in the process of adjusting the temperature of the cold storage.

08/19/2020

Troubleshooting of low valve temperature of screw chiller

The outlet temperature of the expansion valve of the screw chiller reflects the evaporation temperature, which is a factor that affects the heat exchange. Generally, the difference between it and the outlet temperature of the refrigerant water is 5~6℃.

09/01/2020

Power-assisted device for new energy vehicles technical analysis of air compressors!

Air compressor is a basic product of modern industry, it is a device that provides air power. It is a device that converts original mechanical energy or electrical energy into gas pressure energy, and is a pressure generating device for compressed air.