SMC Solenoid Valve VF5320-5GD1-03

04/13/2022

How to Unclog Expansion Valve?

In the air conditioning and refrigeration system, the blockage fault of expansion valve often occurs. The general blockage faults mainly include "ice blockage" and "dirty blockage".

01/11/2021

Fifty questions about maintenance of common faults of Mitsubishi Heavy Industries air conditioners!

Fifty questions about maintenance of common faults of Mitsubishi Heavy Industries air conditioners! Fifty-questions-about-maintenance-of-common-faults-of-mitsubishi-heavy-Industries-air-conditioners Mitsubishi Heavy Industries air conditioning commo器2䀀
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07/10/2020

What is the working principle of screw air compressor

What is the working principle of screw air compressor The screw-type single-stage compression air compressor is composed of a pair of yin and yang rotors (or screws) that are parallel to each other and rotate in the cylinder, so that the air between the rotor slots continuously produces periodic volume changes,

08/03/2020

Why do air conditioners, refrigerators, washing machines, etc. use three-wire plugs

Three-wire plug: neutral wire, live wire, ground wire. The ground wire belongs to the type of leakage protection! High-power electrical products are protected by three-phase plugs

07/25/2020

Problems and case analysis of electronic expansion valve and four-way valve

Judge the quality of electronic expansion valve:<br></br> Step one (see): Whether the wiring is in place and whether the wiring is damaged.<br></br> Step two (listening): After power-on, there is a "click" normally, check whether the coil is in place;

03/14/2021

Function of servo drive

Regeneration and dynamic braking function; Instant power down protection function for quick shutdown;

07/20/2020

Six aspects of repair and maintenance of refrigeration compressors in cold storage

A. During the initial operation of the cold storage unit, carefully observe the oil return of the compressor and keep it clean. If you find that the oil level is not clean enough or if the oil level drops, you should add oil or replace it with new oil in time. This can avoid poor lubrication

07/07/2020

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

06/14/2020

How to change the refrigeration oil of the compressor

The replacement of refrigeration compressor refrigeration oil is a relatively common item in refrigeration equipment maintenance projects, so many refrigeration workers hope that they can do this by themselves, but they are struggling to find a relativelyﰸ2䀀
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07/01/2020

Precautions for the use of screw air compressor oil

Precautions for the use of screw air compressor oil Precautions for the use of screw air compressor oil: It is forbidden to mix air compressor oils of different brands and grades. The old oil must be drained when replacing. It is strictly forbidden to add or filter and reuse. Because although the color of the compressor oil does not change on the surface, the consumption of additives may have exceeded the limit.