3 Way Fridge

This type of refrigerator / freezer works separately to LPG / gas, but I think the refrigerator unit itself contains ammonia, is it safe to send by mail, national or international level and is banneda
or is it easy to empty the unit of ammoniaa

You should contact the Australian Customs Post Office regarding the procedures and customs in the destination country. Once he leaves the country, (we can not guarantee anything, esp in international waters. It is also at the post office to the destination country of how or whether or not it will be delivered. A country like the United Kingdom, Canada, U.S. or European countries are the most reliable.
He may be able to pass under DANGEROUS GOODS. Where are you sending toa Most international companies to refuse because of the chemicals noxiuos .. Are you sure he did not freon in ita In Canada, a chemist Civic have the gas for you. Would not it be easier to just buy a new onea

I recommend getting the measurements, chemical composition, whether new or used destination, weight information before you consider how to send