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SZ 532 fridge cooling problem


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7 replies to this topic

#1 Stringmaster5512

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Posted 24 June 2013 - 08:39 PM

I have a early '88 SZ 532 with a cooling problem. All of the mechanical are working, freezer is ok, t-stat is ok, evap fans are ok. Getting a lot of condensation

but that is due to a blown door seal. There was fist sized ball of ice  at the top tube of the evaporator, so I'm thinking my freon is low, low.

 



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#2 Stringmaster5512

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Posted 24 June 2013 - 08:44 PM

Sorry, the keystrokes...am I correct that the refrigerant is low ? I cleaned the tubes and restarted the system to see if there is any change.

Anything I need to do at this time, except wait?

 

      Domo Arigato



#3 lesguns

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Posted 24 June 2013 - 08:58 PM

YOU NEED NEW EVAPORATOR!



#4 PDuff

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Posted 25 June 2013 - 09:37 AM

Sub Zero has upgraded the replacement refrigerator compartment evaporators because of the system leak issues.  Make sure when researching part to have serial number for correct part number.



#5 certified tech group 51

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Posted 26 June 2013 - 11:59 PM

Depending on the serial number your evap P/N is  4204420 .........................prior to S/N 681566 you will need to remove and discard the accumulator................. About 150 clam$....Plus shipping......................Plus a new filter dryer..................The  last Sub-O evaporator I  installed , the evap coil was made of copper not aluminum................Plus what PDuff said................



#6 Stringmaster5512

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Posted 27 June 2013 - 11:21 PM

Thank you, info and part numbers. The current evap is aluminum, everything else is copper. Also, looks like a replacement compressor for the fridge side. 

I don't have the gear to do the R & R, but I am having a  S-0 tech out tomorrow. I just want to have my ducks, clams and knowledge base all in a row.

  Lesguns: I would have gotten there, but you don't need to shout.

   

    Thanks again! I will feed the beer fund...



#7 certified tech group 51

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Posted 27 June 2013 - 11:56 PM

Why new compressor????...............Even with a slow leak in the evaporator coils, the compressor should still be good...........For me , cuz I yam the Chief cook and bottle washer...I would evac. the system, add full charge and let the low side P.S.I.....( 30 psi on the P/T chart..)    and the current draw ( ballpark 1.7 amps )   tell the tale......................



#8 Stringmaster5512

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Posted 28 June 2013 - 09:24 PM

Sorry, sorry, I just meant that the compressor (fridge) had been replaced at an earlier time. Before I got it. I have 

the evaporator, et al, ordered and a local tech to recharge the system. I will catalog all the info so graciously given

and thank you all for your input!






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