Well, summer is over as is my racing
season, so now it is time to concentrate on cruiser preparation – specifically my re-configuring of my 24V Spectra Newport
into a Spectra Cape Horn. In a momentary flash of brilliance, I sent my Clark Pump to JT (aka Tellie) to have it checked out. I suspect that anything he finds needs fixing – he’ll know what to do and get it back to me whereas I’d be spinning my wheels (so to speak). Since I’m giving him work to do, I can be one of his favorite customers. If he chimes in here and gets me straight on these plans – I could become one of his best.
I am sorting out all the parts
on hand, and ordering a new membrane and filters from Rich to hand-carry to Malaysia
. The rest of the bits will be in checked luggage too. But, I needed to draw out what I thought I’d need to take along.
I’ve broken the plumbing
into 4 sections:
1. SEA WATER
2. BRINE AND PRODUCTION
3. FRESH WATER
4. SYSTEM CLEANING
Here are a few images
to describe what I mean, and I’ll ask a few questions as I go.
SEA WATER INTAKE/PUMPS/FILTERS:
Ok, it must have a speed scoop, facing the bow, clear of head
, sink, etc exits. I recall
½” or ¾” are the desired sizes. I will locally procure this in Malaysia
from the thru hull
to the pumps, is reinforced 5/8” adequate – or should I use some wire wrapped non-collapsing hose?
Boost/Lift Pump: I note some systems do include and if not needed, one less item to carry. BUT – if there is an advantage to having one, my question; What is the desired flow rate?
I see a number of mag-drive pumps on eBay producing up to 750L per hour at very reasonable prices. Any thoughts on these? The Laing Pumps Spectra uses on bigger systems are not so cheap
Filters: I have reviewed discussions regarding using 2 filters 20 then 5 micron, or just a single
5 micron filter. That would cut the bulk and weight if I need only one. DOES THE CAPE HORN BENEFIT HAVING FILTERS– OR IS ONE 5 MICRON SUFFICIENT?
BRINE AND PRODUCTION:
Now the real work starts. Seawater is pumped to the Clark Pump, Accumulator dampens pulses, pressure in the feed line is measured, brine pumped overboard
, and product directed to the Taste and Test Station and when checked OK – directed to the tank. Pretty straight forward here. But still, I have a question. My Newport
came with 2 accumulators. DOES THE CAPE HORN BENEFIT HAVING 2 – OR IS ONE SUFFICIENT?
Note one is already configured with a pressure gauge. Lucky me! I’ll take along both, but if one is all that is required for my set up the other will do duty in the house water system.
FRESH WATER FLUSH:
Following Production and prior to shutdown, the system gets a Fresh Water Flush. The charcoal filter is in the circuit to keep chlorinated dock
water out of the membrane. We routinely keep such a filter in our house circuit, so it begs the question; WHY NOT USE THE HOUSE FRESH WATER PUMP TO FLUSH FROM THE TANK?
As required through use or storage
the system can be cleaned. When set to clean the thru hull
is bypassed with a 3-way ball valve and the cleaning agents drawn in through another hose. My previous experience with RO Systems the agent were just dumped through the system. I note on some of the Spectra systems, it is recirculated. Another Question: Should the cleaning agent (or pickling solution) be recycled during the process?
If so, I will add another 3-way to the brine exit to pump into a bucket. I note some of the Spectra manuals
reference a "Quick Release Port" for "Servicing." Is this required? Is there a suitable replacement available through McMaster?
Enough questions for now. Any and all answers, comments, or questions greatly appreciated. You can all see I like pictures, so if you have configurations to share – please post.
Cheers - Jim