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Post your problem in this forum and include all your info.
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there are START KITS, HARD START KITS, OPTION TO HOOK UP ORIGINAL CAPACITOR. SUGGESTIONS TO DISABLE THE CAPACITOR IN THE 3 IN1,
some of you guys are focused on hard start kits, when most people probably need regular start kits, discussion goes on , but no clearity. it is on this site for sure, possibly on this thread someone mentioned disabling capacitor. would be nice to know exacly how to do that. then there are so many models of the 3 in 1
just went to the supco site under comercial refrigiration xxxx://xxx.supco.xxx/web/supco_live/product_subcategory.php?department=9&category=30 seems like the u series are hard start kits, but not the others . there is a large variety , so is it possible that people are not using the right one and have problems, i wish there was a place where one could go and figure out what to use and how, lots of going back and forth everywhere
I just wish this was simpler
update: I continue digging. here are some suggestions . search google for: Mismatched Kits Cause Failures. the first article that comes up , they talk about special training in order to know how to choose the right 3 in 1 for the application. also search for supco catalog. they have some descriptions there, also search for : choosing the right hard start for the application . please reply here if you're able to understand on how to choose , I would like to learn from you, as I can not figure this out yet...
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This is an old post. I received an email notification that someone replied to it. The refrigerator I mentioned that I put a 3 n 1 in is still running. I installed it in 2006 I believe, so it has given 11 years service in a hot Florida garage.
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did you jump the capacitor or just use it as is? which 3 in 1 did you use? was it the one with a "U" being the first letter of the model #?
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No, I never jump out the capacitor. They make universal PTC/overload assemblies without the capacitor, so I would just go that route if needed.
I don't know the number now, but it was likely an RCO series. It seems like they make URCO devices now. I'm not sure what the difference is, but they state that they can be used on modern high efficiency compressors.
I've used SPP6 hard start kits on air conditioner compressors for years without any issues.
If you are that concerned, you can just find the OEM relay. As you can see, a 3 in 1 usually will outlast the manufacturer ones.
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Originally Posted by: bluefitness  Originally Posted by: richappy I would NEVER use a 3 n 1 hard start device on a modern, R134A compressor, will cause a compressor failure without warning. See my article "replacing compressor start devices". I keep hearing this, but I have never experienced any problems. I have probably put on 20 plus of these. My brothers refrigerator is still running after 6 years with the 3 n 1. The refrigerator is in the garage. I also put one on a chest freezer with a small fractional horsepower compressor, and it still runs perfectly. Every time I go into a local parts store to buy one, the guy keeps telling me it is a crutch and will not last two weeks. All of them have lasted years. He just tries to sell his customers new refrigerators. Maybe, I'm having good luck with the ones I have put on, but it sure beats buying a new refrigerator. I wouldn't put one on a new under warranty unit, but I see no problem in putting one in a 5 year plus one. If it is under 5 years, I usually put one on temporarily and replace it with an OEM starting device later. Maybe, my sample is too small, or I am just lucky (knock on wood). I have also used SPP6 Superboost on A/C units with absolutely no issues. I get told all the time that these devices do not work. How would a company be able to sell 100's of thousands of these devices that damage units and not have a class action suit filed against them? Why would the supply houses still stock them? Why would some techs live by them? You have been extremely lucky. I've seen these things kill compressors 20+ years ago, and I just witnessed one killing a compressor last month. Would I use one to diagnose or on a unit that won't run otherwise? Absolutely. But I would not not leave it on there. Last months ran for a week or 2.
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Richappy, I will concur with the insinuation that you are using nothing more than your opinion or one failure instance as your basis for discouraging use of the 3n1. You stated your engineering background. Well, everyone in the field knows how much good the engineers are in real world applications. I myself am a mechanical engineer. As such, I would challenge you to do as the op requested and SIMPLY provide some of your data showing the cause of failure to IRREFUTABLY be the 3n1, because so far you've only made yourself look foolish and your advice seem skeptical by only offering your background as reason to discourage their use.
The guy stated 2 or 3 times that he sincerely wanted to know so that he could feel confident that it's not a good idea to use them and he would not use them if your testing and data showed they were indeed a problem. What is so hard about backing up your assertions with your supposed data and testing results? I'm sorry but as a neutral party reading through this post, you appear to be a buffoon. Put up or shut up is the way I was raised. If you have the data to back up what seems to be your opinion, I would think you would GLADLY provide it, ESPECIALLY if you are trying to help people as you stated....
I'll be waiting as well for you to provide something besides "I'm smart you're dumb" reasoning because I can pull out plenty of credentials myself that are VERY exclusive that you don't possess that will make yours look like a GED compared to a doctorate..... what good does that do? No good, that's what. Be a man..... if you can.
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I always keep the 3 in 1 start components on hand, and have also heard many times that they should not be left on a system for any length of time. For a long time, I tried to adhere to that advice. Within the past couple years, I have used a 3 in 1 to get refrigerators going, and then returned later to switch out the 3 in 1 with the correct OEM start components. Then, within a few months, I get a call back, because the fridge is once again not running, and I find that the OEM (usually relay) has failed. I have decided that the OEM components are less reliable than the Supco 3 in 1, not based on my education and credentials, but based on my experience comparing the two.
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