Danfoss Compressor SM120W3XH

07/05/2020

Hitachi heat pump compressor

Does the compressor not start related to the four-way valve? There is no relationship between the compressor does not start and the four-way valve. Therefore, when the four-way valve coil is damaged, it will not cause the air-conditioning compressor to fail to start normally, nor will the compressor start normally after the good four-way valve coil is replaced.

08/17/2020

Structural requirements of modular air conditioning units

1. When the windward velocity of the cooling coil exceeds 2.5m/s, a water baffle shall be set. 　　2, the spray section should have an observation window, a water baffle and a water filter device.

08/20/2020

Several important reasons that affect the cooling effect of the refrigeration system of the computer room

From the perspective of operation and maintenance, the specific factors that affect the cooling effect of the air conditioner include the evaporation temperature, the opening degree of the expansion valve, and the condensation pressure.

05/04/2023

What is an HVAC System?

There are many systems and components in a home or building that we take for granted, such as roofs, plumbing, and electricity. HVAC is the main system that probably will be most underrated: a massive heating and cooling system driven by a miniature thermostat.

09/15/2025

Heat Pump Compressor Troubleshooting

There are various types of compressors used in the heat pump unit and the fully enclosed piston compressor is the most commonly used type. However, when it’s in winter, there most probably are faults of this type of compressor due to frequent heating operations.

08/18/2020

Selection of refrigeration piping parts for chillers

The accessories of the refrigeration pipeline of the chiller mainly include various valves and connectors. According to different refrigeration systems, chillers have different requirements for piping accessories.

08/20/2020

Operation guide after the refrigeration compressor burned out

The refrigeration compressor is burned, and the residual refrigerating oil has been carbonized, acid-containing, and dirty in the pipe; and after the compressor is removed, the original system pipe must be corroded with the air,

08/03/2020

Why do air conditioners, refrigerators, washing machines, etc. use three-wire plugs

Three-wire plug: neutral wire, live wire, ground wire. The ground wire belongs to the type of leakage protection! High-power electrical products are protected by three-phase plugs

06/25/2020

[Information] The functions and characteristics of commonly used compressed air flow meters

[Information] The functions and characteristics of commonly used compressed air flow meters 1. The role of compressed air flowmeter 　　Compressed air is an important secondary energy source for enterprises and institutions, most of which is converted from electrical or thermal energy by compressors.

07/07/2020

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