mixing 404 wit 502

[chicoman]

i have this ice machine tht needs sum gas just like 1lb or 1/2lb and i was just wondering if i can mix those two refrigerant wit out effecting the sytem and if will work fine ????

[nike123]

Why would you mix gases? Is there any justified reason to do that, except wish to do it quick and leave even quicker.

[Chunk]

I was under the impression that mixing refrigerants was illegal in the US.

Its not a good idea anyway.

if its running on r502 you can top up with r408a but i didnt tell you that.

[richardb14]

what he says ^
you may even get away with adding R22. R404A is not compatible with the mineral oil used in R502 systems. The ideal scenario is to recover the existing charge, fix the leak (if there is one) change the drier and recharge with R408 - not forgetting to vac out etc etc

[chicoman]

well the ice machine has 404

[chicoman]

u think because the machine has 404 and it just need a little bit of gas

[Chunk]

you are saying it is on r404 but you want to put r502 in it.

[chicoman]

sum yea maybe 1/2 lb

[Chunk]

Dont you have any r404a?

no you cannot mix r404 and r502 because of the oil.

[chicoman]

so and the only thing tht i can top this charge off is only wit 404 i cant use any other refrigerant wit out doing any other type of changes ???

[Chunk]

no there isnt any other gas you can mix with 404.so ideally you need to get hold of some.

[monkey spanners]

What are you doing with R502????

No 'topping off' ffs. Recover charge. Fix leak. Pressure leak test. Vac out. Recharge.
If you have not the skills and/or tools to do this get a profesional in.
It may not even be short of charge but have a blockage somewhere, adding refrigerant in this case will be ineffective at best and dangerous at worst.

[chicoman]

i think them i need to get a hold of 404 thx bro :O)

[chillin out]

What are you doing with R502????

Very good point! where did you get it from?
With it being an ice machine you will have to have proper R404 with no mixing and the exact charge or else it will not work.

Chillin

[nike123]

First, you are trying to mix azeotrope with zeotrope refrigerant. Second, if you do that, you came up with unknown mixture of unknown properties. Factory refrigerant mixtures are precisely combined to have certain characteristic. If you change that composition you could not be sure that is going to work satisfactory and chance that you could end up with same result as non condensables are pretty high.

[chicoman]

yea i got tools and all tht i was just wondering if i can do it skills well as you can see i am new but im a fast learner and mixing 502 wit 404 was a question tht i had and thx for all your meseges
:O)

[The MG Pony]

Mixing = YOU FAIL

Topping up with out fixing leak = YOU go to jail if cuaght.

Not worth it IMO.

Use proper perceduar, if you do not know proper percedure (As the question in of its self proves) Learn it, and learn it well. Long term it will bring you nothing but good.

No 'topping off' ffs. Recover charge. Fix leak. Pressure leak test. Vac out. Recharge.
If you have not the skills and/or tools to do this get a profesional in. < That advice is a damned good start!

Do it right and you'll be hareld as a hero! Do it wrong and the court jester will out rank you!

[Electrocoolman]

Do you wear your "spurs" when working on equipment?