On boats we run many pumps, like
- freshwater pressure pump,
- safety bilge pumps,
- lift pumps, to get water from areas lower than the waterline over boardd,
- shower drain pumps
- cooling pumps that provide sea water to devices that need water cooling like fridge compressors.
The last are the most challenging and stressed pumps that are most likely to fail early.
Specially in the tropics with difficult cooling demands in warm tropical waters these pumps may face operating time of up to 100 %.
That means there is a lot of wear on the usual brushed DC motor and this kind of pump may fail after about 5000h what is a bit more than half a year. Additional these pumps are wasting precious energy by noise and heat. After this time the carbon brushes are worn down and the commutor is unrepairable damaged. So you may end up buying a new pump every 6 months for hundreds of Euros.
So how to reduce the wear?
We developed a new type of pump based on a brushless motor.
These motors are highly efficient, have only a fraction of the weight and lots of power. When we add an extra know how to these basic motors we come out with a longetivity power motor that will last and provide you with a reliable pump.
We dont need to stress them for this application so they run very silent and smooth without producing lots of heat. The only wear parts, beside the pump itself, are our special upgraded ball bearings and they last much longer than the conventional ship pumps you get in your chandlery.
But there is also a downside, these motors need a driver that provides the right power to them. We developed an modern motor driver that does this job and let you connect our pump to the usual switches like any other brushed pump. Our motors are also ignition proof, they don´t produce any sparks.
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Hi guys. I have just found your channel and I am enjoying the content. I especially like the technical content. The lithium and the motor content especially. In the next 6 months or so I will be building a tiny home and would like to be off grid.
Are you still doing YouTube? I don’t notice any recent videos. I also went to check out your Patreon page and can’t seem to find it. How are things going?
Hope this finds you well
Ian
Hello,
Yes we are going on to post new videos.
We just took a time off and enjoyed sailing and boat life.
If you need help with the lithum setup contact us.
We can also help to find the right reliable seller for lithium cells.
Thank´s for mention that the patreon link did not work.
I fixed it, thanks!
.Oliver-
Another excellent video. Perhaps when I might need these pumps in the future, you will be able to tell us where we can get them and a few tips on install. It is kind of sad that Amel did not use closed-cell foam (like poly urethane-high R-value) and vapor seal the freezer. Another great fix.
Hi Oliver. Are you making these motors and controllers or are you buying them? Obviously a big improvement over the wear out and replace existing motors. Where would we get this motor for the seawater pump?