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- เผยแพร่เมื่อ 5 ก.ย. 2024
- This video demonstrates how to replace a failed motor on a Lomanco power vent fan in an attic. The old motor which was 5 years old began squealing and was failing. Replacing the motor with one I ordered from Amazon.com was not very difficult and can be done from inside the attic.
Disclaimer: I am not a professional or have specific training on any of the handyman work you see in my video. This is to show that an average person can do this repair work and you can use the information I provide in the video as a guide. Use caution when working on any project around the house and if you are unsure, hire a professional!
*Well-made, delivered quickly, and easy to install with **Fastly.Cool** . I may be imagining it, but it seems quieter than the 14 year-old unit that I pulled out. Of course it was noisy at the end due to failed bearings, so hard to compare.*
I ordered the motor today. Eazy..peezy. Glad that it's April and not mid July to work up in the attic. Thanks for the video!😎
This video helped me replace a fan in a 3 story townhouse. I had no idea how to do it from inside, Id always gone on the roof to do it. I'm scared of heights. So this video saved me a couple hundred bucks.
Excellent video. Enough detail to actually do the job unlike some other videos. My motor mounting was a little different but I was able to bend the brackets enough to pull the motor and blades off as one piece. My biggest problem was getting the fan blades off the shaft. Mine was really on there but not badly rusted. In the end, I sanded the shaft to remove the little rust, used a penetrating oil to loosen and put a little grease on the shaft. Even then it would not come off. In the end, I used to 2 pickle forks (for removing ball joints on a car), a block of wood, and pounded the fan blade assembly off. No, I was careful not to damage the blades and did reuse them. None of pulley puller tools I had would work with the blades. That was the only problem I had. Everything else went as shown in the video.
There are some repair comments on Amazon that are interesting and suggest a more lasting result. In my case, replacing the motor from the top with a low pitch roof was much easier than being in the attic. I did appreciate your well done video.
love the Startup Sound on that McMillian motor replacement good video and i enjoyed it McMillan is still around today.
Great demonstration video. It answered many of my questions about how to disassemble and reassemble it without removing it from the roof side. But you skipped the part about making sure the fan set screw is facing the flat side of the new motor axle. Thanks for posting this.
True..Thank you for mentioning this. Set srew should be placed on the flat side of the shaft and slightly screwed in, so when you place the fan on shaft, it will not slide all the way down to the motor. Then when seated, you can tighten the screw firmly,
Thank you, thank you, thank you! Your video made it possible for me to replace my squealing motor too! As a retired person saving $$ by doing some things myself is a huge boon.
Thanks so much for this video. Bought a new house that has an attic fan that wouldn’t turn on. Seems like the fan blades were making contact with the mesh screen and maybe burned the motor out. This video allowed me to change the motor in no time! The fan blades would not come off of the mount, even after some penetrating oil. Ended up having to hold the mount with a plier and turning the blades while pulling them up and that got them off.
Thanks again!
Here’s a tip... get some small pure black rubber flat washers and place them on the bolt threads before mounting down the new motor with the lock-nuts to help reduce noice resonance.
Great Vieo Thanks so much for this Video.
Great video. I watch it before taking the motor off and before installing it. Thanks.
10 mm nylon locking nuts (3 nuts)
4 mm hex key for the fan blade
I was fortunate enough to flip the fan and blade and "snake" it out w/o loosening the hex nut first.
I have the same exact fan and same issue you had. I appreciate that you made a detailed video. Waiting for my motor to arrive and then I will follow your instructions. Thank you so much.
Nice video! I liked how you sped up the mundane parts like removing mounting nuts. We know from the ending of the video that you turned off the power at the beginning, but that was not mentioned at the beginning of the video. I'll be doing one of these replacements myself soon. I already removed the dead motor. I'm about to order the replacement. I've done many comparable jobs around home.
regarding the omission of the power warning-it's called ' survival of the smartest'. or, maybe darwin's theory....
I had the same issue where I couldn’t get the fan off like you. This video was so helpful
Thank you very much for this awsome video, I was able to replace one now and I'm about to jump to the second one.
If you can get on top of the house take the cap off and it is much easier to remove and install. Especially if the fan is stuck on the shaft.
This video was a great help. I have THREE fans in my large attic and the first one is going bad and I need to replace it. Thank you!
Joe- Thank you for posting! I just received the new fan and will follow your instructions.
thank you for posting. this was my exact problem and the steps were easy to follow. the video really helped me to change the motor out, and right in the midst of a heat wave no less. top floor is definitely cooler now. thanks for the video
i see several postings from guys about the fan failing in the middle of a heat wave. think about it- those are probably the only times the fan is actually needed- so it makes sense that they tend to fail when they are used- right?? sorry- i don't buy the 'murphy's law' stories here.
Ive done the same thing twice and the one last year lasted 1 year- so im about to order another crap motor. I unscrewed the braces for the motor at the mount and it all came through. Nothing is easy doing this, and the motor went from some $50 at granger to 300 last year. I said thats nuts and ordered it. Anyway, contractors want to just replace the whole unit andni dont want someone messing with my shingles. Since youre innthe dark ill assume your fan is controlled through the light circuit as mibe is. Good video, my local stores dont sell a motor with the 3 screws- needed for that mount. Guess ill get a new thermostat this time also, and im adding an inline switch so i dont have to trip the breaker and shut off the lights. Sure looks like the same motor. Im 75, its not fun any more!
Thank you very much for this video. I was able to replace the fan motor and it is working perfectly.
Just what I needed. Thanks so much Joe.
Nice video, thanks. One pointer with electrical tape...if you pull it taught as you wrap, it will draw to the contour of the wire and nut surface and remain in place better. In high heat locations, the adhesive can soften and the tape will simply fall off...if stretched during the wrap, it will adhere via the adhesive as well as tension.
Thanks for the tip! Great to know.
+K Hav I heard that you're not supposed to stretch it out.
Excellent video. I have the same exact motor and set up.
coat the exposed motor shaft with a light coat of oil to minimize rust from finger prints installing the fan. For longer life, put a couple drops of light machine (engine oil) annually into both the bearing ports.
Why would you remove the anti-short bushing (red plastic piece) from the metallic clad cable? That's an electrical no-no which leads to possible shorts due to chaffing of the conductors.
That's just for packaging. Steel conduit will not fit over it with the red plastic on.
Awesome video partner. Very informative and useful in helping me resolve my attic fan issue. Thank you
Thank you for the tutorial. Very helpful.
I modified the mounting brackets with slots to one side and the bracket screws so the threads are inside. It is now a matter of loosening the nuts a turn or so and rotating the motor a few degrees and the whole assembly drops out. Much easier to put back in. This on a Leslie-Locke vent from Home Depot. And BTW, HD has updated their motor, now with 4 bolts so it doesn't work with the 3 bracket vent.
For attic fan to work efficiently, the ceiling of the house must be seal %100 otherwise the cold air will get suck out of the rooms below. I experience this in my house, my AC run constantly when I have my attic on. I know it is because I have air gap to let the powerful attic fan to suck the cold air out.
The other option is to install gable fan on the side which is better, but use not too powerful motor. Solar attic fan probably is best because it has just enough power to suck the hot air in the attic out.
I bought a 100 watt solar panel connect to 65watt attic gable fan which included in the package & it should work great.
Great video.. thanks.. the only observation is to say to pull the plug from the electricity first.. Thank you..
You are a brave fucking man. You couldn't pay me a million dollars to go near that thing.
Great video AND great audio.
These newer Lomanco fans are really quiet. I remember the older ones when I was young, and they were loud enough to hear from your neighbor's yard...LOL! :P
i had difficulty with getting the whole assenbly out of a Lomanco Lomincool 2000 attic fan i used the same motor as i replaced the blade i used a LAU parts blade the ones with an interchangeable hub as i used a steeply pitched 4 blade 12 inch 27Degree pitch and a 1/2 inch hub for the motor shaft. as this blade is easy on the motor being Lomanco uses a shaded pole 6 pole motor made by McMillan Electric Co. its similar to those used in the vintage box fans as Lakewood mainly used them.
Quality control isn't really the best. The old broad-ocean motor that I pulled out of my attic still had good bearings and in fact had a little bit of oil left in the wicking. That was a 15-year-old attic fan motor (PSC). This one in your video is just meant to fail prematurely.
Yes, just adding oil is definitely not a lasting solution. You could certainly take the top cover off and replace it that way as well. We have a very high, steep roof and I chose to work from the inside where it was easier for me.
That's what I thought too. But I tried oil in that hole and it only stopped the noise for a day or so. Emailed Lomanco and they said it's slowly failing and will eventually need replaced. So I decided to just get it out of the way and replace it.
Thank you
Nice video. Is it important where the fan blade is located on the motor shaft? Is it a good idea to note the original location?
Don't know if location matters. I just tested to see if it would spin freely with the new motor before turning the power on.
Seems like I've seen some comment on dis-assembly and repair that is of a more lasting solution that just adding some oil. Also, just wondering why one would not take the top cover off and replace the motor?
So I would like to remove mine from the rooftop. Remove exhaust cover and how do you disconnect/exchange wiring connectors? Thanks
I would have installed the motor and fan first before I did electrical work. but it works your way too.
I think the old motor is ok I think it just needs oil you can see a little hole by the bearing I think that's all it needs.
Will the fan motor last longer if it turns off now and then according to
temperature or one that runs 24/7 nonstop? Thanks for the help.
thanks for the video...
Thanks! And I will have to check out those Amazon comments.
5 years is terrible lifespan for a lomanco fan- mine is going on fifty years old and shaft is still fairly tight. I do not recommend putting stuff into the motor bushings- they are made with an integral lubricating component. once they're gone- they're gone. wondering if someone did that with yours when it was new.
Nice
Nice vent that needs replacing
Where did you get your replacement from, mine looks like the same model? Thanks
Amazon - a.co/d/9N56oT8
Thank you...my mistake!
Hi, just bought amy firs house. I noticed that my atic fan dont work. Is it any switch tu turn it on? Or is thermostat operated fan?
jorge m mine is thermostat operated. Maybe your thermostat is switched off.
@@jhseidel i will check. Thanks
Great video but to people with installation in your attic use a mask and save your lungs
Does the fan sit close to the motor or an inch or two from the motor?
The set screw should be seated on the flat side of the shaft. This prevents it to slide too close to the motor..The flat side has a seated edge near the bottom towards the motor.
You shouldn’t wire the motor before installing it to avoid a trip to the ER.
That isn't conduit. It's BX cable (armored cable)
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Will the fan motor last longer if it turns off now and then according to
temperature or one that runs 24/7 nonstop? Thanks for the help.
Will the fan motor last longer if it turns off now and then according to
temperature or one that runs 24/7 nonstop? Thanks for the help.
Will the fan motor last longer if it turns off now and then according to
temperature or one that runs 24/7 nonstop? Thanks for the help.
Will the fan motor last longer if it turns off now and then according to
temperature or one that runs 24/7 nonstop? Thanks for the help.
Ralph Gomez - good question. I have a feeling only running the motor when necessary would make it last longer. We have many cool nights that it would not run at all.