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Air Cooler Fan Shutdown

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#1 A.D.

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Posted 13 October 2021 - 02:48 AM

Anyone knows this statement what is meant in a note in P&ID: "Air cooler fan to be shutdown in an even manner".


Edited by dehghan.akbar, 13 October 2021 - 04:21 AM.


#2 latexman

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Posted 13 October 2021 - 06:50 AM

Nope.  Contact the Lead Process Engineer who put the note there.



#3 A.D.

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Posted 13 October 2021 - 07:16 AM

This note is coming from Licensor PID and Lead Process want to know the meaning!!!



#4 latexman

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Posted 13 October 2021 - 09:02 AM

Then contact the Licensor.



#5 A.D.

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Posted 13 October 2021 - 03:09 PM

Please let other members respond if you do not have information on this issue. Certainly, if there was access to licensor, there would be no question here!!!



#6 latexman

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Posted 13 October 2021 - 04:19 PM

I am not preventing anyone from responding. I gave the advice I would follow, if it was possible. I do not know your circumstances, because the OP has no details. If it is not of value to you, just wait for others to reply. Your rebuttals and your !!! definitely show a lack of maturity. Be patient, Grasshopper.

#7 Pilesar

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Posted 13 October 2021 - 06:28 PM

If the fan motors are variable speed drive, perhaps the meaning is to operate the fans while steadily reducing speed for a period of time before cutting the power to them. My guess is the writer of the sentence knew what he meant but was unable to communicate those thoughts clearly when he wrote the note. He may have known nothing about shutting down air cooler fans and decided to write something that sounded like he had knowledge in order to please his boss. Does anyone you know have a history with air cooler fans who might can suggest a reasonable way to shut them down? 



#8 breizh

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Posted 14 October 2021 - 12:24 AM

Hi ,

Can you give us more information about the fan/motor ? capacity/Power ? How do you ramp up the motor to reach the full capacity ? Is there any specific equipment to increase the speed like VSD ?

 

note : is it an existing equipment ? If yes you may talk to the operation team and check their shut down procedure . 

 

More details are needed to get an effective support !

 

My 2 cents

Breizh 



#9 A.D.

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Posted 16 October 2021 - 01:22 AM

Thanks to ALL,

 

Air cooler (incl. 4 bundles , each bundle has two motors) has VSD on motor for 50% of fan motors (only for two bundles)

 

There is temp. control (TIC) to control fan capacity.

 

Motor rated power 18.5 kW. This is a new design and new unit.

 

Regards,

A.D.


Edited by A.D., 16 October 2021 - 02:22 AM.





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