This is one of those jobs where if you need to ask the question you are unable to undertake the job. Handling of refrigerant requires training and is potentially dangerous both to yourself and the environment.
On a practical note it is illegal to re-gas a fridge without repairing the leak first and subject to large fines.
PWestRefrigeration.com
February 2010
Without correct equipment you don't.this is a specialist job and expensive to do!
ck
January 2010
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