LG LS Contactor MC-50a 1380015500

03/11/2021

Common faults

The motor of servo driver is unstable, and the speed is fast and slow. The main reasons for this kind of fault are as follows: 1.The servo driver parameters are not adjusted properly, and the regulator does not reach the best working state.

06/29/2020

Several causes of compressor burning

08/20/2020

The difference between cross-flow cooling tower and counter-flow cooling tower

The so-called cross-flow cooling tower is a type of cooling tower that allows air to flow horizontally through the water spray filler, and the water dragon falls vertically from the top of the tower

08/14/2020

Trouble shooting and correct selection method for thermal expansion valve debugging

As we all know, the thermal expansion valve is one of the four major components in the refrigeration system. It is responsible for reducing the refrigerant from the condensing pressure to the evaporating pressure in the system

08/13/2020

How to deal with the high pressure overload of the chiller

When the condenser heat dissipation is poor, the compressor efficiency is low and the operating current increases. When the high pressure rises to 19Kg/cm2, the compressor trips under the protection of the high pressure switch and the compressor stops runPﰨ2

08/07/2020

Technical post: Use icons to tell you the difference between constant speed and frequency conversion!

The fixed speed air conditioner means that the speed of the internal compressor motor is constant and the temperature is adjusted by switching the compressor on and off.

09/11/2020

Silent air compressor, oil-free air compressor

There are many types of manufacturers and sales. According to the air quality requirements, they can be basically divided into oil lubrication and oil-free lubrication. Here the author focuses on the purchase of oil-free air compressors.

08/15/2020

Installation method of valve in refrigeration system of industrial chiller

In the refrigeration system of the industrial chiller, the main function of the valve is to control the flow and direction of the refrigerant. In daily use, the valve is often used.

03/18/2021

Parameter setting method of servo motor driver

The larger the setting value, the higher the gain and the greater the stiffness. Under the same frequency command pulse condition, the position lag will be smaller.

10/14/2025

Differences between a Contactor and a Relay

The contactor and the relay are all control devices used in electric circuit. But they cannot replace each other. The followings are the main differences between the two.