TRIAD Transformer FD6-120

07/07/2020

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

03/02/2021

Related technical terms

1.Positioning or residual torque: when there is no current passing through the winding, the torque required to make the output shaft of the motor rotate. 2.Driver: an electrical control device used to run the stepping motor. This includes power supply, logic programmer, switching element and a variable frequency pulse source which determines the step rate. 3.Dynamic torque: the torque produced by the motor at a certain step rate. The dynamic torque can be expressed by PULL IN torque or PULL OUT torque.

08/17/2020

What is the reason for the excessive leakage of the refrigeration compressor

1. Insufficient oil flow, increase the oil supply appropriately; 　　2, the assembly sequence of the refrigeration compressor stuffing box is unreasonable and should be assembled according to the procedure;

05/26/2025

Mitsubishi Heavy Industries-Haier AC Error Codes

When there is a problem with your Mitsubishi Heavy Industries-Haier air conditioning, you need to know the meaning of the fault code displayed on the thermostat and how to troubleshoot it.

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.

06/14/2020

Piston refrigeration compressor classification

Piston refrigeration compressor classification? According to the refrigerant used, piston refrigeration compressors are divided into ammonia compressors and freon compressors. Ammonia compressors are mostly used as hosts in large and medium-sized refrige器2䀀
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09/03/2020

Eliminate useless consumption of compressed air

Identify, repair and prevent leakage 　　Leaks may cause problems in the system, resulting in more energy consumption and expensive resources to solve the problem. It is very important to identify and repair all leaks,

08/18/2020

Causes and removal methods of scale formation in the condenser of the chiller

In industrial production, it is easy for the condenser pipes to form scale in the chillers used. If not treated in time, these scales will affect the heat exchange effect and cause the condensing temperature of the unit to increase

08/30/2020

Why does the special air compressor for laser cutting suddenly become popular

Since the beginning of this year, as long as everyone pays a little attention, you will find that at least a dozen companies have launched special air compressors for laser cutting. Why did everyone launch such a product together? Don't worry, let's talk slowly!

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.