Q & A — December 2004
By Capt. Ken Kreisler
| How a fuel polisher works and an explanation of the equalizing cycle during
The boat I just bought
has a Walker AlgaeSep installed in the engine room. How does this
piece of equipment work, and what are its maintenance requirements?
P.G., via e-mail
As illustrated here, AlgaeSep is a closed-loop system with a separate fuel pump and separate pickup that goes right to the bottom of your boat’s fuel tank. It’s made of stainless steel, with the last five inches being fuel-grade hose, enabling it to bend and move so it can reach contamination lying on the bottom of the tank.
When the pump is activated, it draws fuel from the tank and circulates it inside the main chamber at high speed, which centrifuges out water and heavy contaminants, including algae or “bugs.” There is no filter element here, but there is a 25-micron secondary filter at the top that should be changed at least every 250 hours. It captures any growth or solids that are not separated out before the fuel is returned to the tank. (A replacement element costs less than $10.)
One of the big advantages of the AlgaeSep is that fuel can be cleaned underway or at dockside, without running the engines. It is said to work well on boats with severe tank contamination that would normally be candidates for fuel-tank cleaning.
For more information visit www.walkerairsep.com or call ( (818) 252-7788.
This article originally appeared in the November 2004 issue of Power & Motoryacht magazine.