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Thread: R12 drop-ins
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20-08-2007, 05:24 PM #1
R12 drop-ins
Hi All, I need to replace a compressor AJ4492A and have been told a CAJ4492A will do the job, does the C stand for Capacitor?? and will it do the job? the next question is this degreaser ran on R12 now which drop-in is the correct one to use, I have been told isceon 49,134a, 413a, R406a,R401a,R414b?
Can anyone clarify?
Regards
AZA
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20-08-2007, 07:02 PM #2
Re: R12 drop-ins
49 is verry succesfull option, 401a second for med temp, R-401b is low tem.
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20-08-2007, 07:44 PM #3
Re: R12 drop-ins
R409/49
Regards PP
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20-08-2007, 08:02 PM #4
Re: R12 drop-ins
Hi Aza
C or no letter = single phase eg AJ/CAJ etc
T = three phase eg TAJ,TAG,TAN etc
JonLast edited by monkey spanners; 20-08-2007 at 08:05 PM.
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20-08-2007, 08:32 PM #5
Re: R12 drop-ins
I'd go for R413a never had any problems.
Grumpy men live longer
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20-08-2007, 08:39 PM #6
Re: R12 drop-ins
Thanks for the help guys
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04-09-2007, 01:57 PM #7
Re: R12 drop-ins - why no 414 ?
Is there some reason I should Not be using R-414B as a drop in for R-12 ?
PHM
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05-09-2007, 10:11 AM #8
Re: R12 drop-ins
Hi AZA,
yes C does basically stand for capacitor start...High Starting Torque.
ECM
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05-09-2007, 03:47 PM #9
Re: R12 drop-ins
hi i have just put in 134a in a bottle chiller and its still going 5 weeks later happy days.
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05-09-2007, 08:20 PM #10
Re: R12 drop-ins - why no 414 ?
ICOR seems to be hated , because the sales rep, in this forum and the other, but, I have had great success in the medium temp applications. Not so good in low temp, just do to the fact that to obtain a solid column of liquid to the txv you end up with really high subcooling. Seems to throw the unit off when it has a big load.
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08-09-2007, 02:37 AM #11
Re: R12 drop-ins
The guys at my shop are sold on 420a as the only r12 replacement in most systems. I have to admit it does work well but flooding is always a concern.
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22-10-2007, 01:44 AM #12
Re: R12 drop-ins
rs24?.....im using it...seems to work ok?
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02-01-2008, 05:44 AM #13
Re: R12 drop-ins
I have been using 414b for R12 and 134a systems for several years now with absolutly no problems. in a 12 system you only charge to 80% of design and for a 134a system you charge to 90%, or is it the other way around. It's printed on the box...
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