Danfoss Expansion Valve 148X0156

08/11/2020

8 main points of HVAC field construction experience

1. Equipment installation<br></br> 　　 1. The installation location of the air-conditioning host should be convenient for inspection and repair, and should not affect its use function, especially pay attention to heat dissipation.

09/21/2020

Air compressor --- monitoring in operation

The components of a piston air compressor that need to be cooled with water include cylinders, intercoolers, aftercoolers, and lubricating oil coolers.

07/01/2022

How to Install a Sump Pump Check Valve: 5 Steps

What is a sump pump check valve? It is a device that keeps water from reentering the discharge pipe whenever the pump is not running.

08/20/2020

The difference between cross-flow cooling tower and counter-flow cooling tower

The so-called cross-flow cooling tower is a type of cooling tower that allows air to flow horizontally through the water spray filler, and the water dragon falls vertically from the top of the tower

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.

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

03/24/2025

PC Airflow Channel Design: the Best Layout of the Case Airflow Channel

The power supply, CPU, chipset, memory, and graphics card in the computer case can generate a lot of heat.

12/06/2020

The working principle of oxygen generator (oxygen machine)

The working principle of oxygen generator (oxygen machine) The oxygen generator adopts pressure swing adsorption (PSA)-pressure adsorption and atmospheric pressure desorption (HP) method. After the raw material air is pressurized by an oil-free compressor,

08/18/2020

Seven-character poem of emergency plan for refrigerator

Refrigerator emergency plan<br></br> 　　 Refrigeration pump room inspector, familiar with the system pipeline.<br></br> 　　 Do not panic in an emergency, take measures and judgements.<br></br>

01/12/2023

Common Directional Control Valve Failures and the Solutions

In the process of using the directional control valve, various failures may occur in the slide valve, electromagnet, and reversing valve.