Re: [Amel Yacht Owners] Freshwater Pump - pressure sensing mechanical switch
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In the following, I assume that you have an unmodified Amel OEM 66b (standard) or 88b (optional) fresh water pump.
Square D is worldwide and commonly used on water-well pumps throughout the world. It is a very good and reliable pressure switch with a life of around 10-15 years. It difficult to get adjusted correctly. If you search online, you will find several videos and Square D instructions. In my Amel School Book I have 10 pages devoted to the Amel OEM fresh water pump and pressure switch, which I will summarize for you.
Your Amel OEM freshwater pump originally cost 600-900 € and is completely rebuildable. There are several things that could be wrong which I will list in order of probability:
I think that you may have started at the bottom, rather than the top of the above list. Also, it sounds like you might have made an error in wiring to the switch...there are 3 wires to the switch: 24VDC positive, 24VDC negative, and 24VDC positive output to the pilot light on the 24VDC panel.
I have more information than above, you might want to email me directly at ADMbill "at" amelschool.com
The Jabsco pump you discussed is basically a throw-away pump. If you go that route, buy 2 pumps so that you have a replacement when the first fails. Your AMEL OEM pump is no longer available, but very good freshwater pumps from MARCO (www.marco.it) are available. I would suggest the MARCO UP12/A Water pressure system PTFE gears 9.5 gpm. Plus ATX2 Stainless steel accumulator. Part N 16468013 & 16508110...about 340€ for the pump and 80€ for the accumulator...OR you could use UP6/A Water pressure system 6.9 gpm. Part N 16462013 & 16508110 ...about 245€ for the pump and 80€ for the accumulator. Email Email export "at" marco.it BTW, Amel School Clients get a 20% Discount at MARCO in Europe/worldwide and the US through their distributor mate-usa.com.
I hope this helps.