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Thread: 134A reach in cooler problem
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29-01-2006, 06:05 AM #1
134A reach in cooler problem
Newer cheap 2 door worked fine 3 yrs, now too warm;dirty condenser-blew out;sealed system, hermetic compressor, no access valves, cap tube; searched-no leaks; compressor hot, discharge line hot, evap cold but not enough; no noticeable temp change along cap tube, no icing; I suspect partly plugged cap or oil return problem (condenser below). Tomorrow I will go back with tap in valve and recover, blow out cap tube,pressure test, change dryer; recharge.
134A is a pain.
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29-01-2006, 09:04 AM #2
Re: 134A reach in cooler problem
did you check the thermostat? Is it positioned correcty and is it switching at the right temp?
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29-01-2006, 02:18 PM #3
Re: 134A reach in cooler problem
Thermostat is at cold limit, and I can hear it click..box running at 53 degrees. Stat looks ok.
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22-11-2007, 06:52 PM #4
Re: 134A reach in cooler problem
Hi, This is my first post so there may already be an answer to this. I have been dealing with this problem for a while on new 134 a systems (cap. tube) the problem is with the poe oil that is in the compressors. what I do when I have a plugged cap tube (134-a) is replace cap tube , blow out lines, replace filter dryer, and very important change oil in compressor, some how the oil in the compressor breaks down when the compressor overheats (plugged condenser ) if you break open the cap tube can see like scale forming inside.
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28-02-2009, 11:28 PM #5
Re: 134A reach in cooler problem
we have had similar and numerous problems with reach in coolers, where cap blocks up.....
. The problem is with the POE oil.....How to prevent this from happening??? Someone said keep unit well maintained..(clean and clear condensor coils)..tried that ..to no avail.....Anyone got better solutions?
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01-03-2009, 09:00 AM #6
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07-03-2009, 09:41 AM #7
Re: 134A reach in cooler problem
Hi bvis, does the compressor have a run capacitor?
A crook run cap will cause your compressor to run hot and possibly cycle on its overload, causing the case to run warm.
It should be within 10% of the capacitance marked on the cap.
If you do have to replace it, you can use a cap of greater voltage rating, but not less.
Just a thought.
Edit: by the way, even if the capillary is restricted, it could still be caused by a faulty run cap causing the compressor to run hot and cooking the oil.
Or it may just be that dirty condenser.Last edited by Slatts; 07-03-2009 at 09:44 AM.
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07-03-2009, 12:43 PM #8
Re: 134A reach in cooler problem
I see no reason to suspect the cap tube.
For that matter we haven't been given enough information to suspect anything.
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07-03-2009, 04:47 PM #9
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07-03-2009, 08:27 PM #10
Re: 134A reach in cooler problem
Also, OP Bvis hasn't come back since January 2006 - I think perhaps we are wasting our answers here....
Brian - Newton Abbot, Devon, UK
Retired March 2015
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15-03-2009, 07:30 PM #11
Re: 134A reach in cooler problem
get some piercing valve and check pressure, so we can have more info
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16-03-2009, 02:36 AM #12
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