Electrosea A/C Strainer - Experience?

[northshoreone]

I used to put about ten bromine tablets in my 70s strainers when I had it in Cape Coral. The problem is that with the units running they don't last all that long. They do help allot while they last though! I ended up turning off the AC during the summer when I wasn't using the boat and ran dehumidifiers in the boat that drained overboard. One forward, one aft in the master and one in the kitchen. Worked great and cut the electric bill allot!

 

[DCMY #92]

I'm also on the Manatee river and have similar AC issues. I replaced all internal strainers (except gen-set) with South Bays a few years ago. I'm very happy with their performance, but like JD I get growth (muscles and slime) in the AC unit that runs a lot. I made a rig to back flush the through-hull and external stringer with muriatic acid. It works well but is troublesome to do. I purchased a peristaltic pump a few months ago with plans to install it for a trickle feed of chlorine or acid at the through hull, but haven't done so yet.

 

[Pascal]

I had back flush two of 3 chillers yesterday that were both tripping. I had set up some tees after the shutoff valves on both inlet and outlet hoses so I can quickly back flush one chiller at a time when the other(s) are still cooling the boat. As usual, I got a bunch of small shells which were blocking flow at the coil inlets. I just use fresh water but the pressure helps. I got it down to about 10 minutes now…

I try not to run barnacle buster more than twice a year

 

[JR1941]

I have an Electrosea Clearline factory installed in a Sabre 48, new in 2021. It worked well until i came to Tampa and stayed for 2 years. It has become progressively less effective despite replacing the electrode array, having the system acid flushed, dismamtling and manually cleaning the raw water hoses from the seacock to the pump, replacing the pump impeller, and dismantling the Groco 1250 strainer and picking at it until it was pristine. The flow has progressively deteriorated from 16 GPM to <4 GPM. i have had a diver clean the intake of fouling from bottom to and including the open seacock several times. The flow will pop back up to 11 GPM but then falls down again. The return of chlorinated water to the elbow looks unimpeded. Now, I must clear the strainer and Groco bowl of shell growth every 7-10 days. I have not had much help from Electrosea tech. A rep in South Florida suggested that the flow sensor was bad and the replacement is quite expensive without installation. The outfall from the pump would seem to indicate adequate flow but that could be deceiving. Does anyone in boater-verse have any experience or suggestions?

 

[krush]

Old thread, but my first time seeing it. Ships have used systems like this since almost forever.

You just need a power supply and it's usually one alumn and one copper and it makes chorline from the salt water (just like the swimming pool systems). Easy to implement your own system.

Does NOT work with fresh water.