EMERSON Controller Module RFSE142

07/30/2020

What should be paid attention to to make cold storage more energy-efficient?

1. The index to reduce the unit heat flow of the enclosure structure of the cold storage. In the design of the cold storage, the unit heat flow q of the outer wall of the low-temperature cold storage is generally about 11.63W.

08/27/2020

Maintenance method and practice of air compressor electrical equipment

There are many commonly used electrical equipment, such as circuit breakers, contactors, relays, thermal relays, switches, etc., these are hard circuits, in addition to PLC, etc., these equipment is very widely used in air compressors and station rooms, it can be said to be necessity.

07/29/2024

How to Unstick a Reversing Valve on a Heat Pump

A heat pump is a remarkable piece of technology, capable of efficiently heating or cooling a space by transferring heat from one place to another.

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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09/07/2020

The harm of screw air compressor not being maintained on time

The screw air compressor must be regularly maintained. Many air compressor users think that they are fooling around. So why do air compressors need to be maintained, and what will happen if they are not regularly maintained? What is the harm?

07/31/2020

Must know! Safe operation of refrigeration valves

The switching operation of various valves is the main task in the operation of the refrigeration system. The function of the valve is to control and guide the flow and direction of the refrigerant in the system, cut off and conduct the connection between the equipment and the equipment or the equipment and the outside world.

12/21/2022

Classifications and Features of Optical Fiber Amplifiers

An optical fiber amplifier, abbreviated as OFA, refers to a new type of all-optical amplifier used in optical fiber communication lines to achieve signal amplification.

08/16/2020

How to correctly remove ammonia refrigerant during refrigeration machine maintenance

In the process of maintenance of the refrigerator, if there is a fault in the system components from the compressor exhaust shut-off valve to the accumulator outlet valve, it needs to be disassembled and repaired.

09/04/2020

Experts teach you to distinguish six major misunderstandings in the installation and use of inverters and their countermeasures

Today we introduce the six major misunderstandings and countermeasures in the installation and use of inverters. 　　 frequency converter

07/07/2020

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