Harry Brown
Well-Known Member
I'm looking at getting a old but unused watermaker. A Katadyn PUR Survivor 35.
They have been in storage for a number of years without their periodic (annual) Biocide treatment. Hoses have a discolouration and perhaps biocide crystallisation, which is to be expected from long-term storage.
Now, can anyone tell me if they have managed to successfully revive a unused watermaker that has been in storage?
I will be buying a replacement membrane anyway, but am interested first if there is a possibility that it would work straight from the box?
What procedure would you follow to try and get this working again without replacing the membrane? Would you flush first with biocide, non-clorinated water, sea water etc etc?
There is also a membrane cleaning method using alkaline and/or acid. The alkaline cleaner is best for removing organic materials. The process is much like treating a sink drain with caustic soda (sodium hydroxide), a strong alkaline chemical. The alkaline cleaner dissolves and loosens organic matter, thus enabling it to be flushed out of the system. The acid cleaner is less commonly needed. It is useful for removing mineral deposits and scaling, which may occur when processing input water with unusually high concentrations of minerals.
Look forward to your thoughts?
They have been in storage for a number of years without their periodic (annual) Biocide treatment. Hoses have a discolouration and perhaps biocide crystallisation, which is to be expected from long-term storage.
Now, can anyone tell me if they have managed to successfully revive a unused watermaker that has been in storage?
I will be buying a replacement membrane anyway, but am interested first if there is a possibility that it would work straight from the box?
What procedure would you follow to try and get this working again without replacing the membrane? Would you flush first with biocide, non-clorinated water, sea water etc etc?
There is also a membrane cleaning method using alkaline and/or acid. The alkaline cleaner is best for removing organic materials. The process is much like treating a sink drain with caustic soda (sodium hydroxide), a strong alkaline chemical. The alkaline cleaner dissolves and loosens organic matter, thus enabling it to be flushed out of the system. The acid cleaner is less commonly needed. It is useful for removing mineral deposits and scaling, which may occur when processing input water with unusually high concentrations of minerals.
Look forward to your thoughts?
