YOKOGAWA OTDR Optical Time-Domain Reflectometer AQ7260

09/13/2022

Dealing with Actuator Failures: Common Causes and Solutions

The actuator device is a combination of the actuator part and the control valve in automatic control system.

09/18/2023

Heat Pump Water Heaters: Complete Guide, Working Principle, Types, Pros and Cons and More

Are you considering upgrading your water heater? If so, you may want to consider a heat pump water heater. Heat pump water heaters are becoming increasingly popular among homeowners due to their energy efficiency and lower environmental impact.

08/14/2020

How to deal with the leakage of refrigerant in the battery test box

The battery test chamber is cooled by an air-cooled compressor. Its working principle is the same as that of air-conditioning. In the refrigeration process, a refrigerant is used for cooling.

07/02/2020

Introduction of the models such as the MT-100 and other hermetic compressors

Introduction of the models such as the MT-100 and other hermetic compressors The picture shows the fully enclosed compressor MT-100, which is installed by the customer. Meiyou Le Maneurop hermetic compressor detailed introduction;

09/23/2020

Air compressor classification, working principle and air compressor selection

Air compressor classification, working principle and air compressor selection The air compressor is the main body of the air source device. It is a device that converts the mechanical energy of the prime mover (usually an electric motor) into gas pressure energy, and is a pressure generating device for compressed air.

08/07/2020

Use and selection of water pumps for HVAC systems

1. Chilled water pump:<br></br> 　　In the chilled water loop, a device that drives water to circulate. The end of the air-conditioned room (such as fan coil, air handling unit, etc.)

07/19/2020

Basic knowledge of refrigeration compressor

After shutting down, stop for at least 3 minutes before starting again to eliminate the pressure difference between the compressor inlet and outlet. Because in the case of a large pressure difference, the starting torque of the motor will increase, causing the current to rise to a certain level, the protector will act and the compressor cannot continue to run.

08/20/2020

Introduction of solenoid valve and troubleshooting method

1. Symptoms-the solenoid valve does not open possible reason: 　　1 The coil has no voltage. 2 Incorrect voltage/frequency 3 Coil burned out 4 Pressure

01/03/2021

How do I know if it is a fake or an original Danfoss Cold Control 077B I have in my hand?

Cold Controls (thermostats) are subject to the LVD directives, meaning they must be tested according to this Directive so that customers can feel safe and secure during buying and installing these Cold Controls. Danfoss Cold Controls also called 077B to器2䀀
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07/07/2020

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