Fuji PLC NB2U36R-14

07/07/2020

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

08/21/2025

Summary of the key issues of the servo motor drive

According to the current of the motor, use a driver that is greater than or equal to this current. If low vibration or high precision is required, a subdivision drive can be used. For high-torque motors, use high-voltage drivers as much as possible to obtain good high-speed performance.

08/05/2020

Simple estimation and measurement of indoor and outdoor wind pressure difference in fresh air system

At present, most of the fresh air systems we use follow the design philosophy of large air volume and slight positive pressure, but many people are also confused about this. How to detect the pressure in the room on site?

08/24/2020

Operation flow chart of cold chain cold storage management system

In recent years, people's demand for fresh food has increased, which has promoted the development of the cold storage industry, and has also brought many problems and challenges.

07/13/2023

Troubleshooting Air Conditioning Compressor: A Comprehensive Guide

Air conditioning compressors are essential components of an air conditioning system, responsible for compressing refrigerant and circulating it through the system.

04/09/2025

Common DAIKIN AC Error Code Lists

DAIKIN air conditioner/air conditioning system malfunction codes consist of one letter or number plus one number or letter. The letters include A, C, E, H, F, J, L, P, U, and M, and the numbers include 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. These codes are divided into indoor unit related, outdoor unit related, system related codes and others.

07/31/2020

What are the specific operation methods for maintenance of screw compressors in cold storage

Before the cold storage screw compressor must be overhauled, if possible, unload the slide valve to the "0" position, shut down normally, and cut off the power supply.

08/14/2020

Process installation and energy saving measures in the operation of refrigeration system

Refrigeration is the operation of lowering the temperature of the material to be cooled to below the temperature of water or ambient air. The purpose of the refrigeration process in the composition ammonia device is:

07/16/2020

Tips for compressors using refrigeration oil

The amount of frozen oil used. The amount of refrigerating oil should be controlled after the installation of the overall refrigeration system. After the trial operation, the oil return position of the refrigerating oil seen from the sight glass of the compressor should be at the center line of the sight glass.

09/08/2020

The development of laboratory air compressors has become the mainstream trend of the market

In recent years, professional air compressor manufacturers in laboratories have made a lot of technical and commercial tentative research, development and innovation attempts driven by the tide of the industrial Internet, but on the whole, the results achieved are not very satisfactory ( Mainly for the screw laboratory professional air compressor market).