HONGFA Relay HF41F-5-HS

06/06/2025

Suggestions on safe and intelligent regulation of air conditioning and ventilation systems during epidemic period

Under the epidemic situation, rework is imminent. We have carefully studied the relevant regulations and guidelines newly implemented in the country during the epidemic period, combined with relevant national regulations,

08/20/2024

Direct Cool vs. Frost-Free Refrigerators: Comparison of Advantages and Disadvantages

The refrigeration method used by early refrigerators was direct cool type. The biggest disadvantage of direct cool refrigerators is that the refrigerator will frost after a period of use, so manual defrosting is required.

01/20/2023

Choose the Right Solenoid Valve

Solenoid valves are industrial equipment controlled by solenoids. It is the basic element of automation used to control fluids.

08/05/2020

How does the air conditioner collect fluoride

1. Method: The method of collecting fluorine should be correct. Under the state of turning on and cooling, open the covers of the two connecting pipe valves of the outdoor unit with a wrench, use 5 hexagonal wrenches,

05/30/2022

What is Power Supply?

Power supply is a device that converts other forms of energy into electrical energy and provides electrical energy to circuits (electronic equipment).

06/29/2020

How the compressor works

09/08/2020

21 problems that should be paid attention to when using air compressor inverter

Improper use of the inverter will not only fail to give full play to its excellent functions, but may also damage the inverter and its equipment, or cause interference, etc. Therefore, the following matters should be noted during use:

08/08/2020

What are the cold storage boards and how to buy them

What are the cold storage boards and how to buy them What are the cold storage boards? How do I know which specifications and models of cold storage boards are needed for the cold storage I build?

08/03/2020

The air conditioner only cares about food and clothing, and floor heating can enjoy life

With the improvement of living standards, people are no longer satisfied with "warmth", but also want "comfort" and high-quality life.

07/23/2020

9 usage details that affect the life of air conditioners

1. Clean the air filter frequently. Usually clean once every 2-3 weeks. The steps are: remove the panel; pull out the air filter; clean the air filter. Rinse the air filter under the tap. Since the filter is made of plastic frame and polyester silk, it should not be cleaned with hot water above 40℃ to prevent shrinkage and deformation.