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08/16/2020

How to implement the first cooling in the installation of low-temperature cold storage

Before the cold storage is put into production, the installation and debugging of the low-temperature cold storage system is a very important content.

07/07/2020

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

07/31/2020

Multi-online display FC, FL, FE fault processing method

Outside machine LED3 double 8 indicator light is on and displays: FC, FL, FE. When the indicator light of the external mainboard and the line controller fail, the following figure will be displayed:

06/30/2020

Common faults and causes of compressors

Common faults and causes of compressors Common compressor failures are as follows: 　　L. The compressor cannot start normally 　　 The power supply voltage is too low, the motor circuit is poorly connected, or the exhaust valve is leaking, resulting in too high pressure in the crankcase. The energy regulation mechanism has failed.

08/30/2020

Current situation and application of compressor rotor materials

With the development of science and technology, the rotor materials of screw compressors and centrifugal compressors have made great progress and changes nowadays. The author has done some research experiments on this, and this article briefly talks about it.

06/14/2020

Capillary

The capillary tube is the simplest throttling device. The capillary tube is a very thin diameter red copper tube with a specified length. Its inner diameter is generally 0.5 to 2 mm. Characteristics of capillary tube as throttling device

09/30/2025

The difference between fixed speed, frequency conversion, DC frequency conversion, AC frequency conversion, digital scroll air conditioner

The difference between fixed speed, frequency conversion, DC frequency conversion, AC frequency conversion, digital scroll air conditioner The fixed speed air conditioner means that the speed of the internal compressor motor is constant and the temperaturŒﰨ2䀀湠疌VǜV
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01/06/2021

Precautions when using the fresh air system

Precautions when using the fresh air system The fresh air system introduces outdoor air through the fan, and then deeply purifies the pollutants in the outdoor air by the fuselage filter and sends it to the room. After the clean air enters the room, th器2䀀
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12/15/2022

What is a Memory Stick?

The memory stick is a memory cards product launched by Sony in 1999. Shaped like a chewing gum

01/24/2023

What is a Pressure Transmitter?

A pressure transmitter is a device that converts pressure into pneumatic or electric signals for control and remote transmission.