Legrand Transformer '0 442 32

09/22/2020

The development history of single screw machine

1. The history and current situation of single screw compressor 　　 In 1960, France's B. Zimmern proposed the idea of ​​a single screw compressor and obtained a patent. In 1962, the first prototype was trial-produced, and it was officially produced and put on the market by Peugeot in the early 1970s.

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

09/10/2020

The status quo and development trend of China's gate valve market

Gate valves have the longest history of use, and are still used in various countries around the world, especially below DN300mm, which still dominate in various types of valves. The characteristic is that the pressure difference between the front and rear of the valve plate forces the valve plate to press on the valve seat on the right side of the outlet, with good sealing performance, and when the valve plate is fully opened, the pressure loss is small because the valve plate does not remain in the flow path. Used to cut off the medium in the pipeline.

07/27/2020

How much does the air conditioner turn on? How much is the proper air conditioner in summer?

In our family, if we use the air conditioner, we usually use it more in the summer. If we use the air conditioner here, it will be more suitable for our body. It's better. Let's introduce to you how much the air conditioner is on? How much is the proper air conditioner in summer

08/26/2020

Thirteen steps of flushing and changing oil skills, let your air compressor bid farewell to the oil tiger!

Oil-injected rotary screw air Compressors have become the mainstream of air compressors due to their advantages of stability, high efficiency, low vibration and low noise. However, the generally higher oil change frequency of oil-injected

04/02/2022

How to Replace Air Conditioner Fan Blade?

Air conditioner is also known as air conditioning machine. It is a machine that manually adjusts and controls the temperature, humidity, cleanliness, speed and other parameters of the ambient air in the building.

08/19/2020

What kind of preheating work can avoid the failure of screw chiller

The following is a small knowledge point to ensure the normal, safe and stable operation of the screw chiller. If you want to be a qualified chiller operator, you must continue to learn and absorb a more comprehensive working principle of the chiller and its components, and the chiller

08/13/2025

Refrigerator Compressor Not Running and What to Do?

When it comes to refrigeration, the compressor is one of the most crucial components. It plays a vital role in keeping your refrigerator running, as it's responsible for pumping refrigerant throughout the system.

08/25/2020

Precautions for showcase

1. After the cabinet is moved, it must be placed securely and stand still for half an hour before it can be powered on. When using a supermarket display cabinet for the first time, let the empty cabinet run for 2 hours before putting the food in the box for storage.

09/04/2020

The composition and function of the air compressor oil return check valve

The oil return check valve is composed of valve body, steel ball, steel ball seat, spring and other elements. The oil and gas mixture compressed by the main engine of the air compressor is initially separated in the oil and gas tank by centrifugal force.