A boat that we are considering for purchase
has a PUR (Recovery Engineering) watermaker
on it that was bought new in 1990. We don't know how much it was used in the first few years of its life, but the current
owner has had the boat since 1993 and has used the watermaker
only a handful of times and not at all in recent years. Nonetheless, he maintains that if he now flushes that old membrane with citric acid and sodium metasilicate, he will be able to revive the membrane and it will work just fine. Is this even remotely possible? From everything I've read, the membranes do not last more than five years with regular use, and even LESS time if they are not used.
I think this is a PUR 35, but that is also difficult to determine since the model number is different because it's so old. Basically, I'm wondering if this item is a value-enhancing feature on this boat or not. Thank you in advance for any help!