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Replacement fan motor?
I’m working on a Harford freezer with RDI evaporator coil. Two of the four fans quit this week. The EC motors are very short front-to-back and have a threaded shaft. I couldn’t find anything at Aireco that would work so I called Heritage parts for OEM. My price on the motors is $XXXXXXX each! Does someone know of a reasonable replacement?
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Last edited by Dad; 03-26-2020 at 09:03 AM.
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I just went through the same thing
I bought 2 fans and bent over without any KY jelly to pay for them .....the new motors lasted 1 year
Im like screw this
Took all 3 fans out , tossed them .... no actually Im pretty sure I hurled them with great force ..... into the trash pile, went and bought the typical fan setup you see in Heatcraft freezer , the brackets , motors , blades , problem solved
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You could practically by a new evaporator for that price.
ECM = junk !
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https://www.mcmillanelectric.com/products/4064s-2/
I've used this one successfully
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RDI coils are built by HTGP and It’s not as easy to change them over to a PSC motor. If your gonna get rid of the ECM then the brackets and fans need replaced too.
I had better luck with Heatcraft coils where the original fan and brackets could be reused.
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Thanks to everyone who replied. I wound up with a simple solution to get my PSC motor in there. Four 1/4-20 coupling nuts and some threaded rod were used to extend the bracket arms. It still barely fits after sawing off the front studs and whats left of the rear ones. I put Locktite on the extensions so...fingers crossed.
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pics or it never happened
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Here is the one I did
I only had to drill larger holes for the brackets to poke through , and like you , cut off the studs on back of motor so they don't rub through the coil
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Gorgeous pics! I need to take more. Thats exactly the motor and bracket I was working with. The Bohn bracket is probably the best choice but I couldnt find them locally and I was in a pinch. I almost went to my old boss because I know hes got used ones. I was happy to not put more money in his pocket. My bracket extensions work well...if they hold together. Ill report back if they explode the coil.
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i hope you wrapped the wire nuts in electrical tape i always do or shrink tubing
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Heres a pic for Snapperhead. Also note that doing this way requires a new blade.
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Originally Posted by
pctech
i hope you wrapped the wire nuts in electrical tape i always do or shrink tubing
i squeeze silicone RTV in them
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i have done that as well heat shrink tubing is the best but more work to remove later on
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so how does she look finished
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I have also done the 9721 fan motor retrofit. In my case, the OEM motor mount was a sheet metal rectangular bracket, and the rear studs of the motor connected to it. As a result, the slightest imbalance caused my blade to shake excessively. In one case the blade got some ice and began shaking so hard, the blade was scraping the sheet metal cut out. I changed two motors and both were vibrating and struggling to run properly.
If i ever do it again i will utilize the Heatcraft mount that was pictured before as it mounts fan in the front studs between motor and blade and stabilizes it.
The theaded rod extension you did looks solid though, i was worried at first imagining an entire motor mounted with just threaded rod extensions LOL
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