VendNet CB3179-SA Loud Compressor

[ATGV]

I recently inherited a VendNet CB3179-SA. It works great and keeps cool, that is until the compressor kicks on. It is very loud, like a jet about to take off. I checked the manual for noisy or vibrating unit, however from the outside, everything seems to be tight, no leaks, from what I can tell. Anyone have experience with these machines, or this issue?

Link to the machine noise:

https://youtube.com/shorts/iBoORGflZKA?feature=share

[AZVendor]

Maybe a bad fan motor but likely a bad compressor.  Someone has probably bounced it or laid it on it's back or dropped it and effed up the rotor in the compressor.  It's not a fun machine to get the cooling unit out of if you haven't done it before.  You'll need someone to rebuild it with a new compressor.

Edited April 11, 2022 by AZVendor

[NYCandyMaN]

actually a really nice machine made by FSI/USI/Wittern, but hard to get parts for, if it cools, and works don't mess with it, what it could be is the fan behind the condenser, the aluminum thing with the blades on it, there's a fan right behind that, see if its touching anything, if not, and the compressor is really noisy, id let it run till it craps out, no sense in fixing something that's not broken yet.

[tblake05]

6 hours ago, NYCandyMaN said:

actually a really nice machine made by FSI/USI/Wittern, but hard to get parts for, if it cools, and works don't mess with it, what it could be is the fan behind the condenser, the aluminum thing with the blades on it, there's a fan right behind that, see if its touching anything, if not, and the compressor is really noisy, id let it run till it craps out, no sense in fixing something that's not broken yet.

Yeah!  Until the machine smokes and burns the place down.  Good thing for liability insurance, right?

Plus when your machine is loud as hell, Makes you look super unprofessional.  Get that crap fixed!

Compressor fans have been my #1 culprit with USI/FSI/Wittern/Vendnet (whoever they arenow) equipment.

[ATGV]

Thanks for the advice! I found this image online, seems to be a lot of noise coming from these top fans.

[tblake05]

Evap fans! Yay! Not too expensive. Just a pita to remove the deck but way better than a failed compressor.

did you peek inside to make sure that there isn’t ice buildup rubbing on the fans due to a low refrigerant charge?

[ATGV]

15 hours ago, tblake05 said:

Evap fans! Yay! Not too expensive. Just a pita to remove the deck but way better than a failed compressor.

did you peek inside to make sure that there isn’t ice buildup rubbing on the fans due to a low refrigerant charge?

I can't see the fans becuase there is a plate the covers them. I do see frost. This machine is indoors, however the climate is not controlled and can get humid at times. I'm not looking forward to removing the deck.

[tblake05]

5 hours ago, ATGV said:

I can't see the fans becuase there is a plate the covers them. I do see frost. This machine is indoors, however the climate is not controlled and can get humid at times. I'm not looking forward to removing the deck.

 

 

It may be a splash low on freon.  Before pulling the deck, Maybe turn the machine off overnight and let the frost melt off.  That may be whats rubbing on your fan making the noise.

[AZVendor]

Make sure your door seal is intact and that the door gets snug, but don't over-tighten it.  Also make sure the delivery port door is on it and that the thermostat is set to only 2 on the knob from off.  This setting applies only to USI machines.