HOLTEK IC Integrated Circuit Chip HT7540-2

08/23/2021

Why We Use VFD - Efficiency and Performance

The Variable Frequency Drive (VFD) is a device widely used to convert the constant voltage of an autonomous AC power source into a variable voltage for controlling the torque

06/14/2020

What is the principle of air conditioning expansion valve Technical stickers!

The electronic expansion valve is a throttling element that can enter the refrigerant flow of the refrigeration device according to a preset procedure. In some occasions where the load changes drastically or the operating range is wide, the traditional th器2䀀
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07/01/2022

How to Install a Sump Pump Check Valve: 5 Steps

What is a sump pump check valve? It is a device that keeps water from reentering the discharge pipe whenever the pump is not running.

06/14/2020

Do you know the working principle and advantages of the ground source heat pump

Do you know the working principle and advantages of the ground source heat pump What is a ground source heat pump?

02/15/2023

Common Problems and Causes of Gearboxes

The following will introduce some problems that may occur in the use of gearboxes and the reasons for such problems.

08/20/2020

High and low temperature test chamber refrigeration failure What unique secrets do you need to master

The high and low temperature box does not refrigerate, which means that there is a problem with the compressor. A complete refrigeration system is composed of a compressor, a condenser, a throttling device and some auxiliary equipment.

08/14/2020

Precautions for installation of central air-conditioning host

Central air-conditioning is known as the industry standard of three-point product and seven-point installation, which shows the importance of central air-conditioning installation in the entire system.

08/14/2020

How to deal with the leakage of refrigerant in the battery test box

The battery test chamber is cooled by an air-cooled compressor. Its working principle is the same as that of air-conditioning. In the refrigeration process, a refrigerant is used for cooling.

06/08/2022

Function and 7 Common Types of Solenoid Coil?

The self induced electromotive force in the inductance coil always competes with the change of current.

07/07/2020

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