Roof A/C blower wheel

[dlbradley]

Has anyone experienced this, a broken blower wheel? I was awaken last night by a horrible sound.



https://photos.app.goo.gl/j6tJ3zh7ThMSUXaW6
https://photos.app.goo.gl/Fp7fPq7xFPWFEmtd9

[dlbradley]

Images are not playing nicely.

[Xmcdog]

Yessir, it happens. I’ve changed many blower wheels and fan blades.

Photo and video come through ok.

[dlbradley]

Originally Posted by Xmcdog

Yessir, it happens. I’ve changed many blower wheels and fan blades.

Photo and video come through ok.

The motor mount is a little loose. Not sure if it's because of the wobbling it was doing or the cage broke because the mounts were loose.

[777 Driver]

Here's a link to Amazon.com for a replacement: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

~$75 and not too difficult as a DIY.

Here's a link to a video showing how to do it:

https://www.youtube.com/watch?v=SAAFKcxi3jg

That's a pretty disturbing sound, isn't it?

Take care,
Stu

[clifford j]

Had a critter crawl into my furnace blower wheel. Was a short ride Didn't blow the wheel apart, just bent it. Yup it shakes like hell till you kill the power.

CLIFFORD.

[RV Wanderers]

We carry a spare fan and blower wheel as 2 A/C’s have a hard time in the middle of South GA heat and humidity in the summer. Thankfully had a spare when blower wheel went out on the front A/C.

[TXiceman]

Looks like a Coleman Mach 8 and I have replaced one twice now. I carry a spare blower wheel. Pretty common problem on these units.

Ken

[MrMark52]

Originally Posted by dlbradley

The motor mount is a little loose. Not sure if it's because of the wobbling it was doing or the cage broke because the mounts were loose.

As far off balance as the blower wheel was, I don’t think any FHP motor mount could contain the wheel.

Although no harm in confirming that vibration didn’t loosen the mount or bend or stress the motor mount components/base.

[Archer2]

I have three less-than-one year old Coleman Mach 8 AC/HP's and so far one has had the main drum-type blowers disintegrate and a different one's compressor locked up and is being replace next week.
I ordered TWO spare blowers for the parts bin. If Coleman doesn’t want the bad unit back I plan to strip it for parts as well.

[ransil]

Originally Posted by Archer2

I have three less-than-one year old Coleman Mach 8 AC/HP's and so far one has had the main drum-type blowers disintegrate and a different one's compressor locked up and is being replace next week.
I ordered TWO spare blowers for the parts bin. If Coleman doesn’t want the bad unit back I plan to strip it for parts as well.

I had exactly the same in November within 2 hours of each other, was able to swap the blower wheel from the locked up AC to the other one. I carry 2 spares now.

I emailed Colman about the already replaced AC compressor going bad and they say warranty replacement AC's have no warranty, I complemented them on their ongoing revenue stream plan, if they built a reliable product they would probably go bankrupt.

[bevandtomH]

Two blower wheels replaced. Carry extra fan blade jic.
Such a lousy design to have those wheels supported on one end only.
Easy diy if you can get on your roof.

[TXiceman]

Originally Posted by bevandtomH

Such a lousy design to have those wheels supported on one end only.

I would not call it a lousy design. The problem seems to be a poorly designed wheel and/or poor QC. There are lots of similar designs with the over-hung blower and no problems.

As for loose bolts, when I installed the Mach 8 units 2 years ago, i found nearly every bolt in the two units loose from the factory. I let Coleman know about the poor assembly and vibration and never had a response. I tightened the mounting bolts, etc. and stopped the vibration.

Ken

[garysfb]

This happened to me last year. Posts #7 and #13 have pics of the motor plate break and fix. Ordered the wheel from Amazon:

https://www.amazon.com/dp/B019QGTO8M...blower+wheel+r

https://www.irv2.com/forums/f278/fro...er-554765.html