Nedfon Fan DPT20-65B

07/27/2020

The refrigerator compressor keeps beeping after cleaning, but it is not cooling. What's the problem?

he compressor keeps ringing, so it keeps working. There is no intermittent start and stop sound, which means it has been working hard to refrigerate, but now there is no refrigeration output.

08/15/2020

What should I do if wall cracks appear after the cold storage is built

After the construction of the cold storage project, there may be many problems. For example, we have seen a lot of news recently. It is said that the wall cracks appeared after the construction of the cold storage

08/26/2020

Types of refrigerants and leak detection methods

Refrigerants are also called refrigeration working fluids, commonly known as refrigerants in some areas in the south. It is a working substance that continuously circulates in the refrigeration system and achieves refrigeration through its own state changŸ

08/20/2020

Failure analysis Is the air conditioner buzzing about to explode

Summer is the peak season for air-conditioning, and the frequency of air-conditioning in the home has increased significantly. After frequent use, some friends say that the air-conditioning in the home is always buzzing.

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

09/09/2020

The era of running customers one by one has passed, the air compressor owner must do this!

In the current air compressor industry, there are various basic marketing models such as human tactics, technical marketing, product marketing, and conference marketing.

08/24/2020

Emergency treatment of acute ammonia poisoning

Workers in the chemical industry know that ammonia (NH3) is a colorless irritating gas with a pungent and pungent odor at normal temperature and pressure; it is easily liquefied into a colorless liquid,

03/16/2021

How to maintain the servo motor driver?

In order to prolong the lifespanof the servo system, you should pay attention to the following aspects. For the operating environment of the system, the temperature, humidity, dust, vibration and input voltage need to be considered. Please regularly clean the ventilation system of the numerical control device. Always check whether the cooling fans on the numerical control device are working properly. It should be inspected and cleaned every six months or a quarter depending on the environment of the workshop.

05/23/2025

How to select the thermal expansion valve？

1. The role and classification of expansion valves<br></br> Expansion valve is an important part of refrigeration system, generally installed between liquid storage cylinder and evaporator. The expansion valve causes the medium temperature and high pressure liquid refrigerant to become low temperature and low pressure wet vapor through its throttling, and then the refrigerant absorbs heat in the evaporator to achieve the cooling effect.

09/03/2020

Commonly used selection marks for compressor lubricants

1) Air-cooled piston shaft output power <20kW, select 32, 46, 100 (ambient temperature <-10 ℃ optional 32) DAA, DAB, DAC air compressor oil;