Danfoss Compressor SM148W7AQ

08/19/2020

How to choose refrigerant for different types of industrial chillers

We all know that the working temperature of medium and high temperature chillers can be controlled between 3°C and 35°C, low temperature chillers can also be controlled between 0°C and -60°C,

08/18/2020

Component maintenance method of water-cooled chiller

The central air conditioner of the water-cooled chiller is an important part of the entire central air-conditioning system. In order to ensure the normal operation of the air conditioner,

06/15/2025

Training manual for air compressor maintenance personnel

In recent years, it is difficult to find suitable air compressor equipment maintenance personnel, which has become the common feeling of more and more enterprises. From an objective point of view, the low salaries,

08/16/2020

Solutions to the problem of abnormal pressure in industrial chillers

In the actual use of industrial chillers, it is inevitable that some failures will occur. Enterprises need to solve them in time when they face the occurrence of failures. In order to avoid the occurrence of failures, they also need to check the equipment regularly.

09/09/2020

Look at the loyalty and infidelity of air compressor agents

In the increasingly competitive post-air compressor era, whether it is a large international brand enterprise or a small domestic brand, they have encountered a real problem, that is, how to maintain the loyalty of agents.

03/17/2021

Several effective tips for servo motor drive repair

1. When the Panasonic digital AC servo system is powered on, the motor vibrates and makes a lot of noise, and then the driver gives an alarm No. 16, what should I do?

06/14/2020

Central air-conditioning unit classification

Central air-conditioning unit classification The central air conditioning unit is the core part of the central air conditioning system. Reasonable selection of units is very important for a central air-conditioning project. Regarding the cooling mode and器2䀀
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06/29/2020

What is the cause of compressor pipeline vibration

06/21/2020

Common system failures of refrigeration equipment

Common system failures of refrigeration equipment 1. Liquid return: For refrigeration systems using expansion valves, liquid return is closely related to the selection and use of expansion valves. Expansion valve selection is too large, the superheat setting is too small, the installation method of the temperature sensor is incorrect, the insulation bandage is damaged, and the expansion valve failure may cause liquid return.<img src="{{media url=&quot;Common_system_failures_of_refrigeration_equipment2.png&quot;}}" alt="" />

11/15/2024

Understand VFD Better by Wiring the Main Circuit and Control Circuit

1.1 Open the cover by squeezing the grooves on both sides of the VFD(variable frequency drive), remove the wire baffle, connect the terminals R, S, T to the power, connect the terminals U, V, W to the motor, and connect the earth wire at the ground symbol.