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07/16/2020

Tips for compressors using refrigeration oil

The amount of frozen oil used. The amount of refrigerating oil should be controlled after the installation of the overall refrigeration system. After the trial operation, the oil return position of the refrigerating oil seen from the sight glass of the compressor should be at the center line of the sight glass.

08/02/2020

How to judge the presence of air in the air conditioner

In the refrigeration system, the non-condensable gases are mainly nitrogen, oxygen, hydrogen and water vapor in the air; because these working fluids do not condense with the refrigerant, they generally gather in the condenser or the liquid reservoir.

06/14/2020

Cleaning and maintenance of the plate cooler of the air cooler after cooler.

Cleaning and maintenance of the plate cooler of the air cooler after cooler. In addition to the overhaul under special circumstances, plate heat exchangers should also be regularly maintained. Because the plate heat exchanger is easy to assemble and disaﰸ2䀀
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07/07/2020

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

06/24/2022

What is an Encoder?

An encoder is a communication device that controls the motion of an operating device. Encoders can help determine the speed or position of a motor, or other moving equipment.

05/04/2023

What is an HVAC System?

There are many systems and components in a home or building that we take for granted, such as roofs, plumbing, and electricity. HVAC is the main system that probably will be most underrated: a massive heating and cooling system driven by a miniature thermostat.

08/14/2020

Introduction to the three most common classification methods of refrigeration compressors

The evaporation temperature of the single-stage refrigeration compressor is in the range of -45~10℃. Divided by evaporation temperature:

01/06/2021

Ten reasons why central air conditioning is not cooling

Ten reasons why central air conditioning is not cooling Today, go to the user's home for after-sales with the after-sales master. It has been checked that the outlet and return vents of each indoor unit are normal. When opening the window of the outdoo器2䀀
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09/08/2020

Advantages and applicable fields of oil-free air compressor

The advantages of oil-free air compressors: Ultra-quiet: The air compressor works with extremely low sound, which can meet all the requirements of indoor use, such as research institutes, laboratories, hospitals, offices, student classrooms, homes and other environments.

06/21/2020

Common failure and analysis of centrifugal air compressor

Common failure and analysis of centrifugal air compressor 1. Abnormal vibration and noise: ① Misalignment ② The compressor rotor is unbalanced ③ The impeller is damaged ④ The bearing is abnormal ⑤ The coupling is faulty or unbalanced ⑥ The sealing ring is bad ⑦ The oil pressure and oil temperature are abnormal ⑧ There is dirt in the oil Clean, wear out the bearing ⑨ Surge ⑩ The stress of the gas pipeline is transmitted to the casing, which causes misalignment ⑪ There is a machine working near the compressor<img src="{{media url=&quot;Common_failure_and_analysis_of_centrifugal_air_compressor.jpg&quot;}}" alt="" />