Copeland Compressor CR33KQE-TFZ-226WB

07/25/2024

Heat Pump Reversing Valve Structure, Working Principle and Troubleshooting

The heat pump reversing valve (HVAC reversing valve) is mainly used in heat pumps. Since there are mainly four pipes connected to it in structure, it is often called a four-way reversing valve.

06/14/2020

Introduction of refrigeration compressor structure and working principle

The role of refrigeration compressors in the system In order to be able to continuously cool, the compressor needs to suck the vaporized low-pressure vapor from the evaporator and work on it, compress it into high-pressure superheated vapor, and then d器2䀀
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07/03/2024

Proportional Valve vs. Solenoid Valve vs. Servo Valve

The way the valve controls the fluid can be divided into two types: one is on/off control, either fully open or fully closed. Examples for this type of valve include ordinary direct-acting solenoid valves, solenoid-operated directional valves, electro-hydraulic directional valves, etc.

08/13/2020

Adjustment method of one machine multi-storage refrigeration system

In some cold storage, one refrigeration unit is used to supply cold storage to several cold storages with different temperature at the same time.

06/27/2025

VFD Basics - How VFD Controls the Motor Running?

When the main circuit of the VFD is connected with the power line, in order to control the motor, it is necessary to connect the surrounding control circuit to the relevant terminals

04/20/2022

What is A Level Transmitter?

Level transmitter is the extension and development of pressure transmitter technology. It realizes the accurate measurement and transmission of the volume, liquid height and weight of water

06/03/2025

Reasons and necessity of overhaul of oil-injected twin-screw air compressor

The structure of the main engine (also known as the head) of an oil-injected twin-screw air compressor is usually composed of a pair of mutually meshing screws, main engine casing, high-pressure end and end cover, and low-pressure end and end cover.

08/20/2020

Knowledge answers to common questions of ice maker, poke in and have a look!

Many users have a lot of questions to ask when buying ice machine equipment, because understanding before purchasing any equipment is very important, and reasonable

09/04/2020

How often is the physical examination of special equipment Here are 21 questions to help you solve your doubts

What is special equipment? 　　Special equipment is a general term for equipment and facilities that are life-safe and dangerous.

07/07/2020

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