HITACHI VFD Frequency Converter HFC-VAH-6LF3

07/28/2020

Common faults and solutions of screw chillers

Low voltage overrun protection:<br></br> Solution: Replace or clean the filter element; clean the suction port filter.<br></br> Dirty or ice blockage at the inlet of the expansion valve:<br></br> Solution: Dirty blockage: remove the expansion valve and clean it. Ice blockage: replace the filter drier and run again

03/14/2021

Maintenance of servo drive

1.Maintenance of operating environment of servo driver In order to prolong the service life of the servo driver, the following problems should be paid attention to in the process of use. Temperature, humidity, dust, vibration, input voltage and other factors should be considered for the system environment.

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

06/14/2020

Several safety protection methods for compressors in industrial chillers

Several safety protection methods for compressors in industrial chillers In industrial chillers, the quality of the compressor determines whether the working efficiency of the chiller is good. At the same time, the compressor also plays an important role器2䀀
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08/18/2020

Precautions for the selection of fan coils for large central air conditioners

The fan coil unit is an important component in a large central air-conditioning system. Its selection will directly affect our usage, such as cooling effect, power consumption, noise impact, etc.

09/10/2020

Analysis on How to Protect Technology Property Rights in Hardware and Electrical Industry

At present, the German court has pronounced that Apple has infringed on Motorola’s two patented wireless communications technologies and prohibited the sale of products using these two technologies in Germany.

05/20/2025

6 Ways to Quiet Your Noisy Refrigerator Compressor

A noisy refrigerator compressor can be a source of irritation for homeowners, especially if the appliance is located in a common area of the home.

08/20/2020

Operation guide after the refrigeration compressor burned out

The refrigeration compressor is burned, and the residual refrigerating oil has been carbonized, acid-containing, and dirty in the pipe; and after the compressor is removed, the original system pipe must be corroded with the air,

08/14/2020

Precautions for refrigeration piping

The refrigeration industry is now in a period of rapid development. In order to facilitate the refrigeration installation of refrigeration equipment, here is the refrigeration equipment manufacturer to share with you the successful experience accumulated by our technicians.

10/05/2023

Freeze Drying vs Dehydration: Is a Freeze Dryer and a Dehydrator the Same Thing

When it comes to preserving food, there are a variety of methods that can be used. Two of the most common methods are freeze-drying and dehydrating.