YASKAWA Switch PSKU-110R25B

08/20/2020

Introduction of solenoid valve and troubleshooting method

1. Symptoms-the solenoid valve does not open possible reason: 　　1 The coil has no voltage. 2 Incorrect voltage/frequency 3 Coil burned out 4 Pressure

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...

07/25/2020

Oil pressure protection? High and low voltage protection? Thermal relay protection? Come and see if the automatic control appliance fails

There are two types of failures in the automatic control of refrigeration devices: one is caused by the failure of the refrigeration system; the other is caused by automatic control, electrical component failure, and improper debugging.

07/28/2022

How to install a Vane Pump

The pump body is installed and fixed on a special foot rest with screws, and the foot rest is fixed on the base plate of the machine and equipment with bolts.

09/24/2025

4 Types of Safety Protection for Refrigeration Compressors (9 Common Protection Devices for Refrigeration Compressors)

When the compressor is running, some abnormal situations may occur, such as: the exhaust pressure is too high, the suction pressure is too low, the oil pressure is insufficient, the motor is overheated

08/24/2020

The main reason why the freezer is not cooling

1. What will happen if sewage treatment is not carried out? The refrigeration system is a clean, dry and tight closed loop system. Because the passage section of some components in the system is very small (such as the valve cavity of the thermal expansion valve

08/19/2020

Installation and characteristics of cold storage air cooler

The cold storage air cooler is also known as an air cooler, which is an evaporative cooling and ventilation unit that integrates cooling, ventilation, dust prevention and deodorization.

06/29/2020

Compression ratio of American Copeland compressor

08/16/2020

The correct method and detailed steps of cold system blowdown

The purpose of sewage discharge in the refrigeration system of the computer room is to remove the dirt in the refrigeration system so as to prevent the dirt in the system from entering the compressor and the throttle valve.

09/21/2020

Development Trend of Domestic Screw Refrigeration Compressor

Since the advent of screw compressors in 1934, after decades of technological improvement, screw compressors have been widely used, especially in refrigeration.