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Title: 1/3 hp TO REPLACE A 1/4 hp Post by: markinaz on May 13, 2011, 12:59:29 pm Greetings gents. Lots of good info on your site- I like it!
I'm working on my 1st machine, a Cavalier CSS-80. The compressor went shortly after cleaning it up and putting it into service in my garage. :-( The compressor is shot. It measures about 15 amps before it trips the cut-off. I believe its a 1/4 HP. 1st question- Is it OK to replace it with a 1/3 hp? I plan to convert the machine over to R134A and then add a larger condenser to insure adequate cooling. I assume the old data plate which specified 16 oz of R-12 is not accurate for several reasons now. I'm hoping the proper amount of R134a will become obvious by observing the pressure. Is that correct? Thanks, Mark Title: Re: 1/3 hp TO REPLACE A 1/4 hp Post by: mznb1u on May 13, 2011, 02:01:40 pm Mark,
Welcome to the site. :happydrinkers: You will find that this is a very helpful forum. I am sure that one of the experts will have some advice for you on your compressor/refridgerant questions. Another option would be to call Global Compressors--a site sponsor. I am sure they could point you in the right direction. :drinking: Tim :drinking: Title: Re: 1/3 hp TO REPLACE A 1/4 hp Post by: globalcompressors on May 13, 2011, 04:53:36 pm No Sir...don't do it.
The condenser, evaporator and the cap tube are all designed for 1/4hp. It's kinda like putting a Ford 460 block into a Pinto without changing the radiator... Stick with a 1/4 hp compressor and save yourself a ton of heartache, time and cash. Title: Re: 1/3 hp TO REPLACE A 1/4 hp Post by: markinaz on May 13, 2011, 06:09:38 pm More power!! OK, maybe not this time I guess.
So what about when you go green? I mean converting to R134a. Is it a problem for these machines. I read they don't cool as well with the original condensers still in them. If I'm gonna be brazing I might as well plan ahead & compensate now while its all appart. Mark Title: Re: 1/3 hp TO REPLACE A 1/4 hp Post by: Yarochrehc on May 13, 2011, 07:39:43 pm It is true, the system is designed for a 1/4 HP, if you put a 1/3 HP compressor in it your just asking for trouble!
Title: Re: 1/3 hp TO REPLACE A 1/4 hp Post by: globalcompressors on May 14, 2011, 07:14:55 am Mark,
As long as you change the drier and go with a 134a compressor, you won't have any issues. There are other refrigerant alternatives as well but, 134a is the industry standard. Title: Re: 1/3 hp TO REPLACE A 1/4 hp Post by: markinaz on May 17, 2011, 12:03:25 am I like that reply Global. I think I have my plan now.
So my updated shopping list includes: 1/4 hp 134a compressor New dryer Schrader "T" valves (for high & low side) Vacuum pump Freon Oil (for 134a) Gauges Brazing supplies It should be a nice weekend project. |