Is This a Proper Bend?

I recently picked up a broken Avantco UBB-24-60G for free on Craigslist. Immediately upon opening up the compressor compartment in the back I see that the issue was simply a shorted spade connector on the main power switch for the unit.

I spliced in some new wires and it fired up, although it sometimes struggles to start up and I can hear the starter relay engage, the compressor will turn on, and then it will click off after a few seconds.

Along with this it runs pretty hot, so I'm replacing the starter relay, as I can see the relay flashes a little bit when it clicks on which I think I can safely assume is not a good thing. And I'm also replacing the capacitor as when I checked its resistance with a multimeter, it seemed to be pretty slow to reach 200k in resistance.

To preface my main question, I'd like to say that I have no experience in refrigeration or anything similar. I'm just pretty handy and am great with learning proper technique and putting in enough research to confidently know what I'm doing.

Anyways, after at least getting the unit to start I was looking through at everything, and took off the access panel inside to look at the evap coils when I noticed this bend in the tubing. I read something about Avantco being a pretty crappy brand so I just wanted to see if my intuition is correct in assuming this bend is much too sharp. Could this be part of the reason the compressor seems to run so hot? The rest of the unit is pretty clean, including the coils and fins of course. However, some of the copper coils have some surface oxidation.

This is my first time going through and fixing up any appliance, let alone a commercial refrigerator. However, my goal here is to fix up and improve this refrigerator to last much longer, and learn some in-depth knowledge on cooling systems like this that I can also apply to help me maintain the HVAC system in my house. Any tips for this endeavor? I'm thinking once I replace the capacitor and relay that I'll search for any refrigerant leaks and learn how to solder them, then I'll learn how to properly evacuate the lines, purge the moisture, check for any other vacuum leaks and recharge the system.

submitted by /u/blakerich
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