Danfoss Compressor SM090A4CBN

06/14/2020

Cold storage design selection series-refrigeration compressor

Refrigeration compressor is one of the main equipments in the cold storage. The correct selection is very important. The refrigeration capacity of the refrigeration compressor and the power of the matching motor are closely related to the evaporation tempﰸ2䀀
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03/13/2021

Working mode of servo driver

The working modes of servo driver are: open loop mode, voltage mode, current mode (torque mode), IR compensation mode, Hall speed mode, encoder speed mode, tachometer mode, and analog position loop mode (ANP mode). (not all of the above modes exist in all models of drives)

08/17/2020

How to recover refrigerant

1. How to recover the refrigerant from the industrial chiller to the accumulator? 　　The specific operation steps for recovering the refrigerant from the industrial chiller to the accumulator are:

07/07/2020

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

03/03/2021

Voltage of servo motor: relationship between voltage and speed of servo motor

1)At high speed, the speed is proportional to the voltage 2) At low speed, the voltage is lower than the decrease of speed;

08/17/2020

What are the hidden dangers of improper central air conditioning installation

The peak holiday season has come to an end, and the baton is perfectly taken over during the peak work season. After a busy day, the most hope is to return to the comfortable home and get a good night’s sleep.

08/03/2020

Is the culprit behind the frequent compressor explosions physical or insufficient installation standards

Recently, the news frequently reported that the air-conditioning compressor exploded, causing serious injuries to installation and maintenance workers. Is the culprit behind the explosion physical or the installation is not standardized enough?

09/07/2020

What is the relationship between compressor speed and air compressor service life

The speed of the screw air compressor has an inevitable relationship with the maintenance cycle of the main compressor. The higher the speed of the head, the service life of the bearing will also be shortened.

08/08/2020

How to deal with the burnout of the air conditioner compressor pile head, novices should use it with caution

The compressor is an important part of the air-conditioning equipment. Due to its large current, the temperature is sometimes low and sometimes high, which easily causes moisture adsorption.

08/14/2020

Central air conditioning chiller water system and ventilation system cleaning method

The central air-conditioning ventilation system mainly includes air ducts, fresh air ducts, central air-conditioning wind cabinets, air outlets, air-sealing outlets, air handling units, and fan coils.