HITACHI VFD Frequency Converter SJ300-040HFE-SD1

06/13/2024

How to Select a Right Solenoid Valve? Selection Guide for Beginners

The solenoid valve is an industrial electromagnetic device used to adjust the direction, flow, speed, etc. of the medium.

01/31/2023

What is a Gear Reducer?

The gear reducer is an independent enclosed transmission gear between the prime mover and the machine, which is used to reduce the speed and increase the torque to meet the work needs.

07/07/2020

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

08/09/2020

How to deal with the problem of refrigerant leakage from the freeze dryer

Leak detection points require patience, carefulness and certain methods. The specifics are as follows: first use the visual inspection method to open the box panel of the machine to observe the inside of the machine

08/31/2020

Discussion on the sales strategy of air compressor equipment

The characteristics of air compressor equipment sales are large unit product value, long customer transaction cycle, more variables in the transaction process, relatively rational customer decision-making,

07/08/2022

Tips for Troubleshooting Hydraulic Proportional Valves

The components of a proportional valve are few; the spool, solenoid, and linear variable differential transformer, or LVDT. In order to operate the valve, a power supply and amplifier are needed.

09/14/2020

Common troubleshooting methods for twin screw compressors

Common troubleshooting of twin screw compressor 1. Trouble phenomenon The exhaust temperature of the unit is high (over 100 degrees) The coolant level of the unit is too low (should be visible in the oil glass but not more than half) Dirty oil cooler

08/11/2020

What is the difference between the downward air supply and the upper air supply of the precision air conditioner

There are multiple air supply and return modes for precision air conditioners in the computer room, such as upper air supply, lower air supply, upper return air, and lower return air.

06/14/2020

Common faults and elimination of ammonia refrigeration compressor

Common faults and elimination of ammonia refrigeration compressor In the refrigeration system of the cold storage, the refrigeration compressor is the core equipment, usually called the refrigeration host. At present, piston refrigeration compressors are器2䀀
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08/11/2020

5 key points of central air conditioning installation

Central air-conditioning installation is a very high-end technology. I don't dare to install central air-conditioning without a few years of experience.