NEC IC Integrated Circuit UPB10100D

06/14/2020

New energy efficiency standards for air conditioners are officially implemented

New energy efficiency standards for air conditioners are officially implemented Recently, a major event has occurred in the air-conditioning industry, and the new energy efficiency standard has confirmed the implementation time.

06/14/2020

Chinese air-conditioning compressor industry development and market data statistical investigation

Chinese air-conditioning compressor industry development and market data statistical investigation

08/20/2020

Precautions on how to prevent freezing in winter chillers

As the temperature drops, winter is approaching. Last year, many customers’chillers experienced freezing failures. The editor of okmarts.com reminds everyone to do a good job of antifreeze work.

08/03/2020

The temperature of the water-cooled condenser is abnormally high What caused it!

What is mentioned here is a water-cooled condenser, which is mainly used in water-cooled chillers.

06/29/2020

How the compressor works

08/16/2020

How to deal with liquid nitrogen during cold storage renovation

With the increasing demand for national life, cold chain storage has become an indispensable link in daily life. Therefore, the storage and operation volume of the original cold storage is far from being able to meet the market demand.

03/11/2021

The main circuit fuse fusing is a common fault of SCR servo driver. The causes of fuse fusing are as follows

The "phase sequence" of power incoming line is incorrect. Due to the synchronization problem between the trigger pulse and the main circuit of SCR servo driver, there are strict requirements on the "phase sequence" of the input power supply. If the "phase sequence" is not correct, connecting the power supply may immediately cause the fuse of the main circuit of the driver to blow.

03/08/2021

AC servo driver wiring precautions

For signal line and encoder input line, please use shielded wire. Wiring length: the length of signal line from NC to AC servo driver is less than 3m, and the length of input line from AC driver to encoder is less than 20m. The ground wire should be thick wire as far as possible. According to the third grounding standard (grounding resistance < 100 Ω), one point grounding method should be adopted to connect the ground wire. If the motor and the machine tool are insulated, the motor should be grounded.

06/21/2020

[Experience] What happens if the compressor suction pressure is too high and the discharge pressure is too high

[Experience] What happens if the compressor suction pressure is too high and the discharge pressure is too high Compressor suction pressure is too high, discharge pressure is too high 1. Too much refrigerant. Too much refrigerant will cause the suction pressure and discharge pressure to be too high at the same time. This is because when too much refrigerant fills the reservoir, it will occupy a part of the condenser volume, reducing the heat dissipation area and causing the condenser Poor condensation. Discharge excess refrigerant from the low-pressure side.

08/05/2020

What are the different ways that industrial chiller equipment can be lubricated

Everyone knows the principle of industrial chiller compressor. The compressor sucks the low-temperature and low-pressure refrigerant gas in the evaporator into the compressor body, passes through the compressor