View Full Version : Refrigerant TP5R and TP5R3

04-03-2006, 07:56 AM
Does anyone knows refrigerant TP5R and TP5R3.
I found it in a SANYO MDF-592 Freezer

old gas bottle
04-03-2006, 10:09 AM
if its in a ultra low temp cabinet -80/130 it may be one of there own blends, if it is its very expensive so look for a alternative,also beware that they are sometimes 2,1/2 times the pressure of say r22 so take care.

04-03-2006, 03:00 PM
Thank you ogb
It is a ultra low temp cabinet -60 C with two stage. The first stage has the one type of refrigerant and the low stage has the other. It's very expensive and not finding here. what's can be the alternative solution?

04-03-2006, 04:13 PM
Does anyone knows refrigerant TP5R and TP5R3.
I found it in a SANYO MDF-592 Freezer

They are obscure blends that I refer to as ?exotics?. You will probably know them better by their AHRAE designations:

TP5R is R412A - a mix of R22 (70%), R218 (5%) and R142b (25%). Two of those, R22 and R142b, are chlorinated, and are therefore regulated by the ODS Regulations in the EU. It appears to be a non CFC transitional replacement for R500.

TP5R3 is also known as R 508, a mix of R 23 and R 116, though it doesn?t make clear which one, A or B. R508 A is a proportion of 39% - 61%, R508 B is 46% - 54%.

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04-03-2006, 05:30 PM
thank you Argus for info

04-03-2006, 09:45 PM
I used to work for Sanyo & yes, they are their own blends. I never used anything else to recharge them as Sanyo wouldn't recommend anything else (wonder why that is?:) ) but I would imagine that R404a would be O.K. for the 1st stage, not too difficult to charge as it has a sight glass from memory & R508b (or R23 which is cheaper) for the 2nd. -a bit more difficult but if charged carefully keeping an eye on head pressure etc. when running it is do-able:)