Joe Wood wrote:
See Figure #1A of this document:

http://www.raritaneng.com/pdf_files/...4phiiv0102.pdf

In the diagram add an extra Y-valve between the pumpout line and the
Lectra-San input.

It won't work, Joe...there's no way to dump a tank through the
Lectra/San 'cuz it can only handle a maximum input of 1 gallon at a
time, and each treatment cycle is 2.5 minutes long.

Theoretically, it's POSSIBLE...it's just totally impractical. First,
you'd have to have a means of limiting the flow from the tank to 1
gallon at a time. Then, release a gallon...run the Lectra/San (2.5
minute treatment cycle time)...release another gallon...run the
Lectra/San (another 2.5 minutes). The unit isn't designed to run
continuously, so after treating the 3rd gallon, wait 10-15 minutes for
the motors to cool before releasing another gallon. It would take at
least two hours just to dump a 10 gallon tank...20 gallons would take
half a day! So it makes no sense whatever to even consider it.

Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/html/get_ri...oat_odors.html



Peggie Hall wrote:

However, whether the boat should even HAVE a macerator or any other pump
to dump the tank depends on whether the boat is in coastal waters that
provide immediate access to open sea...'cuz it's illegal to dump a tank
in ANY US waters....only when at least 3 miles out to sea. ...



Hi Peggy, pleased to meet you.
Our new old boat has a CG approved electronic system for treating sewage
that I was told allowed us to dump inside the 3-mile limit (Cheasapeake
Bay) but I'm more than a little dubious about dumping anywhere there
isn't out-to-sea current (like in my slip). We're still refitting so
haven't used the head at all but plan to live aboard soon. I'd like to
add a tank to store sewage til we could either pump it out at a dockside
station or dump in deep water via the purifier, but dunno how to get
(pump?) the sewage from the tank into the purifier. The pump on the head
does that now. Suggestions?

TIA
Howard