Hitachi Compressor 303DH-47C2Y

08/17/2020

The setting of fire damper in HVAC system

In the HVAC design, there are many types of valves for fire prevention and smoke exhaust, and the valve settings are different for different applications.

08/21/2020

The role of pressure relay in refrigeration system

In industrial refrigeration, a pressure relay is an electric switch controlled by a pressure signal. It is often used as a protection and regulating element that directly controls the start and stop of the refrigeration compressor or controls the opening and closing of certain solenoid valves

08/14/2020

Need heat preservation for precision air conditioner cooling pipes

Whether the cooling water pipes of precision air conditioners should be insulated depends on specific conditions. Under normal circumstances, it is not insulated,

06/29/2020

Several causes of compressor burning

09/30/2022

Servo Motor: Basics, Work Principle & Selection

This article introduces the basic knowledge, working principle, selection and related FAQs of servo motors.

02/22/2023

Classification of Butterfly Valve

Butterfly valve, which dated back in 1930s, is a common valve type. It is easy to be combined with various driving devices, with good durability and reliability.

07/04/2020

Excellent Growth of Portable Oil Free Air Compressor Market 2020 : Top Key Players – Hitachi, Anest Iwata, Nanjing Compressor

 JUL 3, 2020  Corona Effect, Covid-19 Commercial Refrigeration Compressors Market, Global Commercial Refrigeration Compressors Industry, Global Commercial Refrigeration Compressors Industry Forecast 2026, Global Commercial Refrigeration Compressors Market, Global Commercial Refrigeration Compressors Market 2020, Latest Commercial Refrigeration Compressors Market Research Report

06/14/2020

How does the frequency conversion air compressor save electricity

How does the frequency conversion air compressor save electricity The frequency converter will automatically adjust the working frequency of the compressor How does the frequency conversion air compressor save electricity? The frequency converter will auﰸ2䀀
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09/01/2020

Out-of-print sales training manual, sentence dry goods (industry general)

Article 1: Sales log 　　 1. What is sold during the sales process? 　　 Answer: myself 　　 1. Joe Girard, the world's number one car salesperson, said: "I don't sell my Chevrolet, I sell myself";

07/14/2020

What are the reasons why the air conditioner is not cooling?

What are the reasons why the air conditioner is not cooling? In summer, people turn on the air conditioner mainly to get a cool feeling, but they did not find that the air conditioner has not been cold for a long time. The air conditioner is not cooling. What are the reasons why the air conditioner is not cooling? Many air conditioners are not cooling, because it is faulty Problem, so it is necessary to repair it, what are the ways to repair the air conditioner?