On Tuesday 11 April 2017 10:49:24 Kirk Wallace wrote: > On 04/10/2017 07:26 PM, Gregg Eshelman wrote: > > You wouldn't want to put R-134a in it. > > http://hvac-talk.com/vbb/showthread.php?133531-SubZero-532 > > > > On Monday, April 10, 2017, 3:44:48 AM MDT, Kirk Wallace > > <kwall...@wallacecompany.com> wrote:On 04/09/2017 09:16 PM, Kirk > > Wallace wrote: > > > > ... snip > > (just by turning the thermostat off) > > >> It turns out, without adding more ice the cabinet actually got > >> cooler by 5 degrees. Uhh? > > > > ... snip > > The S-Z 532 datasheet shows an R-134a version later in the serial > numbers. I suppose I could study the parts lists to see what changed > and order the R-134a parts. The tools such as the manifold gauge set, > vacuum pump, reclaiming tank, and others should not be expensive. I > have enough ice containers (plastic peanut butter jars, extra chunky > of course) to last years, plus I can move the downstairs refrigerator > into the S-Z hole while I'm working on it. I'll gain a valuable skill > and tool set, that I can use on other units in my sphere of influence. > It would be nice to tackle this "Refrigerator" once and for all. The > thread link above (thank you) will help with my issues check list. > > Oops, after more thought, "You wouldn't want to put R-134a in it." > doesn't necessarily mean stick with the R-12, but there may be a > better alternative. I'll have to work on this some more.
If you have a slow leak with R-12 in it, putting R-134a in it will probably let you hear the leak, its a much smaller molecule and can get out of a leak R-12 can't. R-134a also operates best at 2-3x the high side pressure R-12 works best at. Enough diff I blew the R-12 rated hoses on my old gauge kit, and a new R-134a rated kit was cheaper than just the hoses. I expect I'll have to charge both rigs before the weather gets out of hand in the next month. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
