SMC Discussion Areas

Gents,

As some of you may have seen in my posts recently, I just got my first machine.  So today I went through and just gave it a good cleaning from top to bottom.  In the meantime I plugged it in and let it start cooling down.  After about 30 or 45 minutes of cooling, the sound softened to what I would compare with a normal hum of a refrigerator.  Then about 15 minutes later it went back to the louder sound as if it was running hard to cool down.  It hasn't stopped since.  Its been running pretty hard now for probably about an hour or more.  Please let me know what your thoughts are in your experience.  Is anything wrong?  Anything I need to check?  or is this just normal.

Thanks!

-Ryan

Ryan,
Something is wrong. Should only kick in for 10 minutes or so and then turn off. A bad T-stat is where I would start. Damage may occur if it runs too long.
Creighton

I would have to agree with Creighton on this one ,
Start out with the T- stat also you may want to replace those
fan motors  :Oo:.

Ok so now my ignorance of these machines starts to become apparent.  How do I check the T-stat and how do I know if thats the problem?  This could be the beginning of frustration for a guy that isn't familiar with any aspect of his new hobby.

Ryan,
These machines are a bit intimidating at first. The nice thing is once they are fixed will work for a very long time.  Try the search function for info on thermostat testing. If it hasn't been replaced in a few years it should be, as well as the upper and lower fans. These parts are available from the board sponsors. Any questions just ask!!
Creighton

 Yeah Ryan do your best to not be intimidated. Trust me I don't know much either! Usually the first thing most of us do is replace the fans. If your working on it anyways, it is always a good idea and they aren't too expensive. The thermostat can be a little more expensive. I always replace it anyways, so I don't have to worry about it anymore. The wires on both are nonpolar so it is an easy fix. The thermostat is basically responsible for telling the compressor when to come on. If you search for earlier threads, it explains it in detail.

Pulling the whole compressor is easy too. It makes replacing everything much easier.
Remove the line cover and then 3-4 screws by the evaporator and 1-3 bolts on the compressor plate. You should build some sort of stand to rest the evaporator assembly on after it is removed from the machine (search for previous threads on this subject). I have simply used a small patio set side table I have.
Being your first machine, I would also highly suggest getting a manual for your machine (if available) as it will greatly aide in identifying parts and procedures. You can get one from one of the sponsors.
Good luck and ask any and eveery thing!

I have to agree that it is always a good idea to replace the fans and T-Stat. those are the most common problems and they are cheep. While you have it apart you might as well change them.

Did you put a thermometer inside to see if it is cooling and how far down its going? Is the machine empty or loaded?

The machine currently only has about 6 bottles of coke inside.  I will stick a thermometer in there and find out what temp its getting down too.  After I test that, I'll probably order a manual and try to work on the t-stat and fans the previous guys have mentioned.

A good test to find out if the lower fan motor is causing the vibration is to carefully wedge a rag or towel to prevent the fan from moving (with the machine unplugged!!) and then plugging it back in to see if the vibration is still there.  Just don't leave it plugged in with the fan jammed for too long, just long enough to source the vibration.

No vibration = Replace the fan motor
Vibration = Keep lookin!

-Tom

Thanks Tom...I'll give it a shot!

-Ryan

I would also go out and pick up a case of bottled water and load the machine up.  I usually keep bottled water on the empty shelves.  My USS 8 64 seems to run less often when it is full.

Is it still cooling when it is making this sound?

Yeah it seems to be getting fairly cold.  I think tomorrow I will stock it up with bottles and turn it on.  I'll put a thermometer in there to find out how cold it is actually getting down to.  After all that, I'll start working on the t-stat and/or fans.  I really didn't want to have to take anything apart but I'm afraid its going to happen.

If you find out that it is still cooling down to a good temperature it's probably the temp. control. Another thought, is the wiring in good shape going to the temp. control, not shorted out?

It sound like I've got a full day of work ahead of me.  Lots of things to check.

Good luck on your machine, but it isn't as bad as it seems!

So I got back out there and started to test some things to try and sort out my problems with my V90.  It seems like the only way to get it to quiet down was to adjust the t-stat while it was running to a point it kicked off.  I assume this means the thermostat has gone bad.  With that said, whats the best way to go about replacing it?  Anyone have an extra or a suggestion of where to get one?  If you have other thoughts, please feel free to share.

Thanks,

Ryan

go to a local refrigeration store.they usually have higher quality ones. Original ones were usually ranco. They are more expensive than from the dealers, but of higher quality. It should cost you around 50 or so and 20 for the fans at a refrigeration place