NEC Relay UC2-5NU

06/14/2020

Analysis of the current status of refrigeration compressor technology development

Analysis of the current status of refrigeration compressor technology development

01/03/2021

Danfoss Filter driers

Look for the Holospot® label Visible to the naked eye, the code is the quickest way to make sure that you are holding a genuine Danfoss filter drier. Check that the code matches the last two digits in the 10-digit product code (visible with a standard ma器2䀀
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09/11/2020

Inverter companies will transform to personalized services

Recently, the Institute of Industry and Market Research of the Institute of Machinery Industry Information said that my country's inverter market will not be saturated until at least 10 years, and the overall market potential is 120 billion to 180 billion yuan.

08/02/2024

Sensors and Solenoid Valves on the KOBELCO Excavator Engine: Locations, Error Codes, and Functions

In order to protect the environment, most excavators are now using EFI systems (referring to electronic fuel injection systems).

11/08/2021

Guide of Siemens Pressure Transmitter: Features, Working Principle and Troubleshooting

Siemens pressure transmitter is a kind of equipment which converts pressure into pneumatic signal or electric signal for control and remote transmission.

07/07/2020

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

01/06/2025

What is the principle of the chiller shell and tube evaporator

The cold water shell and tube evaporator is made by expanding two-layer metal plates with high-pressure gas or by mechanical pressing. It can also be made of aluminum alloy die-casting.

08/17/2020

Maintenance and maintenance of water-cooled chillers

Many people cause personal injury or damage to the machine when repairing the water-cooled chiller. Non-professionals are not allowed to perform trial maintenance on the water-cooled chiller.

07/30/2020

Do you know all about 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.

08/13/2020

Maintenance of automobile air conditioning control system

When troubleshooting and overhauling the automotive air-conditioning control electrical system, the specific failure phenomena should be observed and the possible failure locations should be analyzed to avoid blindness in overhaul.