Previous in Forum: Bakal Pressbrake Problem   Next in Forum: Class II Hazardous Area Classification
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
7 comments
Rate Comments: Nested
RAJ089
Commentator

Join Date: Oct 2009
Posts: 63

Refresh My Knowledge - Wiring Diagram

05/17/2011 8:50 AM

Dear folks,

was looking for a Wiring diagram for a 3/4 HP, 3 phase exhaust fan on American Roof.

Timer is delay start. This wiring diagram has to incorporate an Electromagnetic Timer by TORK or equivalent.

Also I still find that I have to register again to answer a question. Please correct me. I appreciate the picture sent to me but it also requires to register again on my own question. I just wanted to clarify a counter question-- answer that question to get the wiring diagram.

Please help quickly.

Thanks
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Refresh My Knowledge - Wiring Diagram

05/17/2011 9:21 AM

Why start a new thread when this one's Wiring Diagram of an Exhaust Fan still working? Just answer the questions there.
Register to Reply
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#2
In reply to #1

Re: Refresh My Knowledge - Wiring Diagram

05/17/2011 9:48 AM

Quite.

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#3

Re: Refresh My Knowledge - Wiring Diagram

05/17/2011 9:49 AM

If there has been little to no response to the original posting, it may be that no reader is able to help. Re-posting won't change that.

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
ozzb
Guru
Hobbies - Fishing - Old Salt Hobbies - CNC - New Member United States - US - Statue of Liberty - New Member

Join Date: Mar 2007
Location: Rosedale, Maryland USA
Posts: 5197
Good Answers: 266
#4

Re: Refresh My Knowledge - Wiring Diagram

05/17/2011 5:09 PM

If you did not log in. You will get that message to register

__________________
 Life is not a journey to the grave with the intention of arriving in a pretty, pristine body but rather to come sliding in sideways, all used up and exclaiming, "Wow, what a ride!"
Register to Reply
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#5

Re: Refresh My Knowledge - Wiring Diagram

05/17/2011 11:49 PM

In your control circuit, assuming the timer is an octal socket relay:

L1 of supply to Off-On switch; other terminal of switch to terminal 7 on socket, and jumper to terminal 8 (common).
Terminal 6 (NOTC) to motor starter coil; other terminal of coil may already be wired to overload relay; other terminal of overload to terminal 2 on socket, and then on to L2 of supply.

There may be variations from this, but it is a very common setup. The relay coil and motor starter coil voltage must match the supply voltage.

But why does there need to be a delay on start?

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply
hithuanand
Power-User
India - Member - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Apr 2010
Location: Asia/India
Posts: 365
Good Answers: 1
#6
In reply to #5

Re: Refresh My Knowledge - Wiring Diagram

05/18/2011 8:10 AM

But why does there need to be a delay on start?

maybe the oil should be pumped to all mechanical moving parts before it starts rotating

Register to Reply
Elroy
Power-User
Canada - Member - New Member

Join Date: Feb 2010
Location: The Great White North
Posts: 185
Good Answers: 13
#7

Re: Refresh My Knowledge - Wiring Diagram

05/18/2011 10:30 AM

Here is a link to a Tork timer wiring layout.

The reason for the timer is likely to cycle the exhaust fan at different times of the day.

http://www.nsiindustries.com/Repository/Files/WSerINSTALLOP.pdf

Elroy

__________________
 Knowledge makes what was impossible, seem easy.
Register to Reply
Register to Reply
Have a Different Question?
7 comments
Copy to Clipboard

Users who posted comments:

Elroy (1); hithuanand (1); lyn (1); ozzb (1); PWSlack (2); Tornado (1)

Previous in Forum: Bakal Pressbrake Problem   Next in Forum: Class II Hazardous Area Classification

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (146 right now)
Show Members
Advertisement