Danfoss Compressor SH485A9AAN

09/10/2020

Air compressor lubricant replacement standard and market analysis

1. The selection criteria of air compressor oil 　　1) Oil selection: mineral oil, semi-synthetic oil, synthetic oil (synthetic oil is mainly PAO series) 　　2) Pour point: ≤-10℃ 　　3) Flash point: ≥180℃ 　　4) Acid value: 0.2 　　5) Performance requirements: good oxidation resistance, anti-emulsification, and less residual carbon

08/21/2020

Failure Analysis of Air Conditioner Button Circuit

Where is the button circuit in the inverter air conditioner? The first is the function keys on the display panel, and the second is the automatic switch on the main board. The main purpose is to transmit user instructions and achieve the purpose of information interaction.

09/06/2020

Basic knowledge of PID regulation and PID

What is PID regulation and the basic knowledge of PID At present, the level of industrial automation has become an important indicator of the modernization level of various industries.

07/07/2020

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

09/04/2020

How many do you know about the essential nine almighties in the bearing industry

1. Installation of bearing 　　 Whether the bearing is installed correctly or not affects the accuracy, life and performance. Therefore, the design and assembly department must fully study the bearing installation. Hope to install in accordance with operating standards. The work standard items are usually as follows:

08/23/2023

Dual Fuel Heat Pump: Everything You Need to Know

Dual fuel heat pumps are becoming increasingly popular among homeowners looking for energy-efficient and cost-effective heating solutions. In this article, we'll cover everything you need to know about dual fuel heat pumps, including how they work, their benefits, drawbacks, and whether they're right for your home.

09/03/2024

Applications of 15 Common Refrigerants, Must-Read for Refrigeration Professionals

The properties of refrigerants are directly related to the refrigeration effect of refrigeration equipment and even personal safety. Whether you are designing, installing, repairing or maintaining refrigeration equipment, you should know the properties and applications of these common refrigerants.

06/14/2020

The reasons for the high temperature of the compressor discharge are

The reasons for the high temperature of the compressor discharge are (1) The clearance in the compressor cylinder is too large; (2) The suction and exhaust valves and piston ring of the compressor are damaged; (3) The compressor safety bypass valve器2䀀
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12/20/2022

What is an Optical Fiber Amplifier?

The optical fiber amplifier, also known as the optical fiber ampler (OFA for short), refers to a new type of all-optical amplifier used in optical communication link to realize signal amplification.

01/23/2024

Single Fan and Dual Fan for Household Central Air Conditioning Outdoor Unit: How to Choose?

Central air conditioning generally includes indoor units and outdoor units. For the selection of outdoor units, there are generally single fan and double fan types to choose from. So which one is better to choose?