congrats on your new baby (Splendor), and may you have many happy years together.
Secondly, the liberty is not all that common round the traps but what we have learned over the years when the odd machine or two have come in for repair, is to have to shy away from them and refer the client straight to the importer which is a company called coffex in Melbourne.
You are probably already aware of coffex and I gather youre in melbourne so thats about as good as its going to get Im afraid.
The reason for us shying away is that the support for this model appears to be limited, and to get any kind of support from out of Melbourne is tough. You place an order for a part, it never turns up, they dont ring you back, or they do and they refer you to their Adelaide office, they refer you back to Melbourne...or whatever. You keep telephoning, they dont ring you back, you have to keep chasing them, yarteh yarteh yarteh. On one occasion it took about a month of chasing around for parts to get to us. From an independent repairer point of view its just not worth the trouble, and it makes the repairer look bad when the fault lies with the supplier of the parts......
Whether the element is replaceable, or whether the bottom of the boiler has to be replaced as an assembly doesnt really matter...either way you should direct your enquiry to coffex. In any case either way I cant see why the unit would not be repairable....whether its cost effective or not or whether its worth doing for whatever reason, in the end is really only a question that the owner can address.
Rest assured your Splendor will never be that difficult to service.