PIZZATO Switch FM 538-M2-EX7

07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

09/06/2020

Design steps of two-wire AC current transmitter

Known high-current current transformers convert different currents into 0~5A alternating current for on-site display. For long-distance transmission, the current must be converted into a standard DC current signal of 4-20mA before transmission.

08/09/2020

New Explanation of Basic Knowledge of Small Chiller System

Small water chiller is a kind of water cooling equipment, small water chiller is a kind of cooling water equipment that can provide constant temperature, constant current and constant pressure.

08/02/2020

Pay attention to these details when installing household central air conditioners!

Household central air-conditioning has gradually become one of the necessary conditions for modern home life. When choosing and installing central air-conditioning,

10/29/2025

How to Defrost a Heat Pump: A Comprehensive Guide

Heat pumps are an essential component of HVAC systems that provide both heating and cooling solutions for homes and commercial buildings. However, like any other mechanical device, they require maintenance and care to operate efficiently and effectively.

09/09/2022

Permanent Magnet DC Motor: Types, Application, Selection Principle (1)

A <strong>permanent magnet DC motor</strong> (PMDC motor) is a type of DC motor that uses permanent magnets to create a magnetic field.

07/29/2020

Air conditioning chilled water pump lift estimation method (including examples)

The so-called selection and calculation of water pumps are actually estimates (many calculation formulas themselves are estimates), and more detailed and comprehensive considerations are accurate calculations.

08/20/2020

Which is cost-effective to rent a cold storage or build a cold storage yourself

Which is cost-effective to rent a cold storage or build a cold storage yourself? On this issue, we mainly have the following considerations:

08/24/2020

Beware of invisible pollution in air conditioning in summer

"My God, I can't believe that the air conditioner that is blown every day is so dirty." Mr. Huang, who lives in Jiqingmen, said in surprise after opening the air conditioner.

06/14/2020

What are the common problems of central air conditioning compressors?

As far as central air conditioning is concerned, the most important component is the compressor. It is equivalent to the "heart" of the air conditioner. If there is a problem with the compressor, the central air conditioner will stop running. Therefore, w器2䀀
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