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Post by ckfan on Feb 20, 2022 15:28:13 GMT
Sounds fine to me. Sounds like a healthy scotch yoke compressor.
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Post by 508gm1 on Feb 20, 2022 21:42:30 GMT
Wonderful, thanks fellas
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Post by 508gm1 on Feb 19, 2023 23:03:30 GMT
I am seeking an opinion. The rattling has persisted for over a year now. If the refrigerator was running & I was walking by I could give it a soft nudge & it would stop. It would return however on next cycle. Down the one side of this fridge are 2 rather deep gouges from the last owner removing it from their home. It was definitely laying on its side at some point (wish they had have just left it for me to deal with). Anyway the rattling I was experiencing would be at the same rotation speed of the compressor. Basically sounded like it was just ever so slightly touching the side of the case. I decided to lay the refrigerator on its other side on some very soft packing blankets. I then electrically bumped the compressor - laying on its side - for about a second. I righted the unit & waited about a half hour before restart. The rattle is now completely gone.
My question - what the heck did I actually do? In my head I wanted to physically shift the compressor mechanism slightly. I know these are supported by springs internally. Any thoughts would be great.
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Type JD
Feb 20, 2023 13:55:00 GMT
via mobile
Post by ckfan on Feb 20, 2023 13:55:00 GMT
Very fascinating. I think one of my scotch yoke units actually has the same rattle. I hope it doesn’t come back for you.
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Post by turbokinetic on Feb 20, 2023 14:13:32 GMT
I am seeking an opinion. The rattling has persisted for over a year now. If the refrigerator was running & I was walking by I could give it a soft nudge & it would stop. It would return however on next cycle. Down the one side of this fridge are 2 rather deep gouges from the last owner removing it from their home. It was definitely laying on its side at some point (wish they had have just left it for me to deal with). Anyway the rattling I was experiencing would be at the same rotation speed of the compressor. Basically sounded like it was just ever so slightly touching the side of the case. I decided to lay the refrigerator on its other side on some very soft packing blankets. I then electrically bumped the compressor - laying on its side - for about a second. I righted the unit & waited about a half hour before restart. The rattle is now completely gone. My question - what the heck did I actually do? In my head I wanted to physically shift the compressor mechanism slightly. I know these are supported by springs internally. Any thoughts would be great. Interesting observation. It's possible that the internal springs are stretched, or somehow bot supporting the compressor in the center of the casing. You might try shimming under the mounting feet of the compressor, to give it a slight tilt in the direction which quiets it down? That is; if the sideways bump test doesn't provide a permanent fix for the rattle. EDIT: Our family had a 3 ton Copeland recip unit for the upstairs of our house. It had a terrible repetitive rattle as if the springs were broken. The HVAC company wanted to change the compressor for a large amount of money. I found out that you could push the compressor casing slightly in one direction and it would stop the noise. It was on rubber grommets so that was pretty easy to do. I cut a wooden wedge (like a door stop wedge) and tapped it under the compressor from one side, to keep the casing slightly tilted. The noise never happened again and that unit lasted 5 more years at least. It was still working when we moved from that house.
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Post by 508gm1 on Feb 20, 2023 20:46:11 GMT
It has been 2 weeks & so far the rattle has not returned.
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Post by turbokinetic on Feb 21, 2023 16:19:44 GMT
It has been 2 weeks & so far the rattle has not returned. Awesome, that is great to hear! (or NOT hear!)
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