Danfoss Compressor SM090A7PZ

07/29/2020

R410a refrigerant vacuum training

The first step of vacuuming<br></br> 　　Steps for installing and connecting the internal and external machines...Connect the pipes connecting the internal and external machines, tighten...

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.

06/05/2025

How to choose screw air compressor with or without oil

In screw air compressors, they are classified according to the type of lubrication, which are mainly divided into two types: oil lubrication and no oil. Literally, it is easy to understand whether or not air compressor lubricants are needed.

08/15/2020

Characteristics of oil cooler and attention issues

An oil cooler is a heat exchanger that uses air to cool hot fluid. Like other coolers, rust scale will appear. The rust scale appears mainly because the cooling water contains a large amount of calcium, magnesium ions and acid carbonates.

01/11/2023

What is a Directional Control Valve?

Hydraulic valves are used to control the flow direction or adjust the flow and pressure of liquids (oil, water, or air) in hydraulic systems.

06/29/2020

Several causes of compressor burning

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.

08/21/2020

The principle and decisive factors of cooling tower cooling effect

The role of the cooling tower is to exchange the cooling water carrying waste heat with the air inside the tower body, so that the waste heat is transferred to the air and dispersed into the atmosphere.

08/07/2020

Three circulation systems of industrial chillers

Water chillers play a very important role in the industry. They are needed in the refrigeration process of electroplating, chemical, printing, pharmaceuticals, plastics and other industries. Due to the wide range of applications of chillers

08/02/2020

Principle and maintenance method of air conditioner pressure protector

In addition to window air-conditioning units, many air-conditioning systems use high-pressure and (or) low-pressure pressure protectors to protect the compressor in the event of a system failure. During the normal operation of the device