Home Page link

Fan motor starts slooooowly

Home| Search | About
Login Password
Register Now! Lost Password?

Home Repair - - If it ain't broken, don't fix it. Otherwise look here. 

Page 2 of 2       << first < 1 2 Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Fan motor starts slooooowly Bob F 09-05-2008
If you were  Registered and logged in, you could reply and use other advanced thread options
Posted by John Grabowski on September 5, 2008, 8:13 am



> I've seen a number of older exhaust fans that start very slowly. Turn them
> on, they barely turn for up to several minutes, then finally speed up
> fairly quickly to normal operating speed. Can anyone suggest why this
> happens, and a way to fix them to operate properly?


I've seen this a number of times with bathroom exhaust fans. After removing
the internal parts and cleaning them thoroughly, performance on many of them
improves. Gunk tends to build up on the fan blade which I surmise causes it
to be heavier than the little motor was designed for. If not then I replace
the motor and blade or install a new and improved (Panasonic) bath fan.


Posted by JohnR66 on September 5, 2008, 8:55 am


> I've seen a number of older exhaust fans that start very slowly. Turn them
> on, they barely turn for up to several minutes, then finally speed up
> fairly quickly to normal operating speed. Can anyone suggest why this
> happens, and a way to fix them to operate properly?
>
>
I assume you are talking about the motors without a capacitor and a start
terminal. These motors develop weak torque until reaching full speed. The
lubrication gums and the motor spins slow for awhile. It is best to
dissasemble the motor, degrease the bearings and apply a light oil (like 3
and 1 motor oil).



Posted by Stormin Mormon on September 5, 2008, 9:51 am


The folks I have worked with tell me that three in one is a poor choice for
motors. It (three in one) dries out rapidly. Same with WD-40. The good
choice is ND-30 motor oil, or zoom spout turbine oil. The gas mix oil for
two strokes is supposed to be good, also.

Cleaning the blade sounds like a wise action, also.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.



The
lubrication gums and the motor spins slow for awhile. It is best to
dissasemble the motor, degrease the bearings and apply a light oil (like 3
and 1 motor oil).




Posted by Steve Barker DLT on September 5, 2008, 9:19 am


Cause they're gummed up with shit. Need to disassemble them, clean them
with brake cleaner, and relube the end bushings.


s


> I've seen a number of older exhaust fans that start very slowly. Turn them
> on, they barely turn for up to several minutes, then finally speed up
> fairly quickly to normal operating speed. Can anyone suggest why this
> happens, and a way to fix them to operate properly?
>
>
>



Page 2 of 2       << first < 1 2
Similar ThreadsPosted
Help! Pool motor starts intemittently September 5, 2006, 1:36 pm
Help! Pool motor starts intemittently September 5, 2006, 1:37 pm
Re: What type of AC motor have I got? capacitor start motor? May 8, 2006, 6:16 am
Has anyone ever replaced their conventional furnace fan motor with an ECM motor? December 21, 2007, 9:09 am
soft starts, pf correction April 11, 2007, 11:03 pm
Gas oven starts with BOOM!!! May 20, 2006, 2:10 pm
Air Conditioner makes Loud Hum when starts then goes away July 26, 2005, 9:12 pm
Lawn mower starts and stalls August 31, 2006, 6:22 pm
help diagnose: dryer starts but cuts off February 20, 2007, 12:40 pm
Well water pumps starts with a bang February 10, 2008, 8:40 am

Contact Us | Privacy Policy

XML SitemapXML Sitemap