Danfoss Compressor SZ300A7PV

07/14/2020

Compressor operation requirements

Compressor operation requirements The first load operation of the compressor is carried out after the empty vehicle operation and purging are completed. The compressor should be operated according to the following requirements:

07/05/2020

Hitachi 6HP Inverter Compressor-Compressor

Hitachi 6HP Inverter Compressor-Compressor Why is frost formed between the electronic expansion valve and the compressor? A customer asked: The compressor is suddenly not cooling, and the electronic expansion valve is frosted to the compressor. Is there any relationship between the two before?

08/18/2020

Common faults and maintenance methods of air-cooled chillers

Air-cooled chillers are installed outdoors without any obstruction, and are easily affected by outdoor light. So how to maintain good ventilation, good environment and space has a key impact on the cooling effect of the chiller.

02/27/2021

Working principle of servo motor (how servo motor works)

The rotor inside the servo motor is a permanent magnet. The U / V / W three-phase electricity controlled by the driver forms an electromagnetic field. The rotor rotates under the effect of this magnetic field. At the same time, the encoder of the motor feeds back the signal to the driver. The driver adjusts the rotation angle of the rotor according to the comparison between the feedback value and the target value. The accuracy of servo motor depends on the accuracy of encoder (number of lines).

06/30/2020

What are the causes of compressor overheating

What are the causes of compressor overheating Some causes of compressor overheating: high return air temperature, large motor heating capacity, high compression ratio, high condensing pressure, and improper refrigerant selection.

07/16/2020

How to clean the constant temperature and humidity box condenser

The condenser of the constant temperature and humidity test chamber should be maintained regularly on a monthly basis. Use a vacuum cleaner to absorb the dust adhering to the condensing heat dissipation mesh or use high-pressure air to remove the dust.

06/14/2020

What are the characteristics of cold storage semi-closed and fully enclosed refrigeration compression

What are the characteristics of cold storage semi-closed and fully enclosed refrigeration compression Cold storage refrigeration compressors can be divided into two major categories: semi-hermetic and fully-enclosed refrigeration compressors according to器2䀀
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08/15/2020

Comparison of ground source heat pump and air source heat pump

1. Ground source heat pump technology 　　The ground-source heat pump central air-conditioning system is a heating and air-conditioning system composed of rock soil,

07/07/2020

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

09/08/2023

Air Source Heat Pumps Explained

Air source heat pumps (ASHPs) have emerged as a popular and eco-friendly alternative for heating and cooling homes.