At the end of 2009 the use of virgin HCFCs was banned, what can I use to top up my refrigeration and air conditioning systems?
Climalife are able to offer a number of different options depending on the equipment and how it operates.
We can offer easy retrofit options for R-22 such as R-417A, R-422D, R-427A or other refrigerants such as R-404A, R-407A or R-407C which will require more work.
Alternatively, until 31st December 2014 you can use reclaimed product which is available from Climalife under our own brand of R-22T.
For HCFC blends such as R-401A and R-409A you can use either R-437A or R-134a, whilst for R-402A, R-403B and R-408A you can replace with R-422A or R-404A.
Each Climalife office has knowledgeable people who can help you match your system requirements with the correct refrigerant. To find out more you can contact your local office or alternatively email us details of your system and one of our Climalife experts will reply to you.
Do refrigerant fluid mixtures break down if there is a leak?
YES AND NO
Azeotrope mixtures do not break down, and behave like pure substances.
As for zeotrope mixtures, they do not always break down if there is a leak, for two reasons:
1 - The mixtures are made up of fluids of similar natures and as they have very small temperature variation they break down only slightly. In the case of a leak in gaseous state, simple refilling it reestablishes the mixture. Eg: R-404A, R-410A.
2 - A mixture with a high variation (for example R-407C) does not break down in a gaseous state in the presence of its liquid, or when it stops. In operation, the probability of a mixture breaking down is virtually nil.
To remove doubt, simply measure the pressure/temperature ratio and this will show if the mixture has changed from its initial proportions. Acceptable pressure is P< 0.3 to 0.5b max.