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Thread: cold room
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26-09-2013, 12:09 PM #1
cold room
Hi Guys
Looking at a cold room in my local and compressor is burned out.Can get a compressor but is slightly larger displacement but same gas r404a.Will i have to ajust explansion valve or require new to get correct superheat.cold room set point is 3°c.Any advice.
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26-09-2013, 02:06 PM #2
Re: cold room
how much is "slightly"?
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26-09-2013, 02:19 PM #3
Re: cold room
.
I agree with Chemies open question, plus I would
advise you to look at the rating. It might be a slightly
bigger comp but is it a low back pressure (LBP) or
high back pressure (HBP).
If you use a fridge compressor in a freezer application
it might not be suitable and visa-versa for a freezer
compressor in a fridge application.
In principle a comp that is just slightly bigger but compatible,
should have no issues replacing a similar but smaller comp.
Rob
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26-09-2013, 02:32 PM #4
Re: cold room
As always Rob, you pinpoint the qustion, so I will refrase my question,
Model and make of the old compressor and the new compressor.
That should give us the ability to judge.
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26-09-2013, 02:59 PM #5
Re: cold room
Hi
The old compressor is BA18MG-1 off a heatcaft system r404a.The new compressor has a displacement of 16 and is hbp.(don't have model on me right now).Room will be running at 3°c, worried about low back pressure and superheat on system if compressor is too different.
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26-09-2013, 03:30 PM #6
Re: cold room
Tthis is a number of a condensing unit, medium temp and the compressor displacement is 18cc.
Looks like compressors they use are made by kirby.
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26-09-2013, 05:02 PM #7
Re: cold room
Thanks new compressor is Embraco model-NT620GK.Would this do the job?
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26-09-2013, 05:22 PM #8
Re: cold room
It should work, diferences are minor, you might have to agjust the superheat but do that at one or two C above setpoint.
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26-09-2013, 05:50 PM #9
Re: cold room
Thanks very much doing job 2mor let u know how it goes