Hitachi Compressor 403DHV-64D2Y

11/15/2024

Understand VFD Better by Wiring the Main Circuit and Control Circuit

1.1 Open the cover by squeezing the grooves on both sides of the VFD(variable frequency drive), remove the wire baffle, connect the terminals R, S, T to the power, connect the terminals U, V, W to the motor, and connect the earth wire at the ground symbol.

08/20/2020

Aftertaste the college entrance examination how many points can you answer this set of cold storage test papers

This year's college entrance examination is over, Chinese, mathematics, science and comprehensive...These subjects rigorously and scientifically test the students' ability to take the test.

09/08/2020

The necessity of air source system and its treatment

A system composed of equipment that generates, processes, and stores compressed air is called an air source system. A typical air source system consists of the following parts: air compressor, rear cooler, filter (including pre-filter, oil-water separator, pipeline filter, oil removal filter, deodorization filter, sterilization filter) Etc.),

02/25/2020

Why is the air conditioner not cooling

1.Check whether the compressor is working normally. If the compressor is broken, the air conditioner cannot start normally and there will be no cooling effect. 2. There is not enough refrigerant in the air conditioner. At this time, you need to add Freon, and the time for adding Freon can be very long. 3. The air conditioner itself has quality problems and the electrical components have failed. In this case, you need to find a master to repair it.

09/08/2020

The characteristics of the main shaft of the frequency conversion screw air compressor

The main core of the equipment operation of the rod host during the operation of the variable frequency screw air compressor. Without the rod host equipment, the equipment cannot operate normally. The following is an explanation of the characteristics of the rod host used in the air compressor equipment:

08/09/2020

What are the reasons for the frost of the refrigeration compressor

The importance of the refrigeration compressor in the entire cold storage refrigeration system is self-evident, I believe everyone knows it. Next, let's watch Xiaobian teach you to turn things around.

06/14/2020

The reason for the failure of the multi-line air-conditioning compressor is revealed!

The reason for the failure of the multi-line air-conditioning compressor is revealed! 1 Overview The failure of motor compressor (hereinafter referred to as compressor) can be divided into motor failure and mechanical failure (including crankshaft, co器2䀀
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08/11/2020

The latest inspection standards for ammonia-related refrigeration enterprises

In order to strengthen the safety of the use of liquid ammonia in ammonia refrigeration enterprises, comprehensively improve the intrinsic safety level of the use of liquid ammonia in the enterprise

02/04/2025

What is a Semi-Hermetic Compressor? Everything You Need to Know

If you're in the refrigeration or air conditioning industry, you may have come across the term "semi-hermetic compressor." But what exactly is a semi-hermetic compressor, and how does it differ from other types of compressors?

06/29/2020

How the compressor works