SIEMENS Module 6ES5451-8MA11

09/03/2020

To the air compressor salesperson: how to make an air compressor to sell more and more

Hard work does not necessarily lead to a good sales performance. Why are the air compressor sales people tired and tired every day, but they sell fewer and fewer machines? If the method is wrong, there will be many detours

08/14/2020

Effective means to reduce the resistance of condenser heat transfer system

To ensure that the condenser has a higher heat transfer coefficient, it is necessary to reduce the resistance in the system. There are three ways to achieve this goal.

09/08/2020

Teach you how to understand the energy-saving EMC of the air compressor system

Before the article starts, let's sort out the basic characteristics of contract energy management services (EMC): 　　 Use the saved energy cost (energy saving benefit) to pay the investment cost

06/14/2020

What if the compressor burns out

What if the compressor burns out Why does the compressor burn the motor? What caused the burn-in phenomenon? The summary of the reasons for motor burning can be divided into: load, power supply, motor insulation, and lack of equality.

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

06/14/2020

What are the causes of frost in refrigeration compressors

1. The opening of the thermal expansion valve is too large, or the installation of the temperature sensor is incorrect and the fixing is not firm or loose. The main reason is that the temperature sensor may feel the temperature too high in this case, resu器2䀀
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08/17/2020

The setting of fire damper in HVAC system

In the HVAC design, there are many types of valves for fire prevention and smoke exhaust, and the valve settings are different for different applications.

08/24/2020

What kind of equipment is generally used in cold storage How to select the refrigeration equipment

The cost of cold storage with a refrigeration capacity of less than 60kw is relatively large, and it is generally suitable for small cold storage and air conditioning units. The cost of such small cold storage within 100 square meters ranges from 30,000 to 100,000.

08/06/2020

Have fun with the cooling water and condensate water system, start here!

1. Design steps of cooling water system<br></br> 　　 1. Installation of cooling water pump and cooling tower<br></br> 　　Each cooling tower should be equipped with at least one water pump. Generally, spare pumps should be considered for maintenance.

06/29/2020

Compressor oil change index

Compressor oil change index The general indicators for determining whether the refrigeration oil can continue to be used are: appearance, viscosity, acid value, moisture, pour point, flash point, compressive strength, copper corrosion, mechanical impurities and insolubles.