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| 2003 Haulout Tasks | |||
| The haul out over the winter of 2002-2003 was used
to perform all of the below waterline projects necessary in preparation for
departure on the Atlantic Circle cruise. In addition I took this
opportunity to complete projects that I need to have complete before I
moved on board in the fall of
2003. This page will be used to record progress on this projects, which include the following: |
| Thru-hull Fittings |
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When I took possession of Sarah she had an incredible number of thru-hull
fittings. Since each thru-hull is a potential single point of failure that
could sink this ship, I took it as a goal to reduce the number of thru-hulls
to an absolute minimum. I discovered I could do little about the drain thru-hulls for each of the three sinks on board (galley, head, forward cabin). They rely on gravity to drain the sinks and therefore must be located as close as possible directly below the sink drain. Similarly, the above water line thru-hulls (deck and cockpit drains, refrigeration and air conditioner discharge) could not be effectively combined or eliminated. Therefore my primary targets were the intake thru-hulls (head, galley, refrigeration, air conditioner, deck wash down, engine, and generator). I inherited 6 sea cocks to serve all of these functions. My goal is to get them down to no more than three. My method for eliminating the thru-hulls is to combine the plumbing into several manifolds, each off a single sea cock. I eliminated two of the seacocks in 2001 when I combined the air condition, refrigeration, galley, and head intakes onto one 1" seacock. This was accomplished by placing them on a single manifold located under the galley cabin sole, shown below. In 2003 I combined the engine and generator onto one 1 1/2" seacock. There was one unused seacock that I guess was originally used for the air conditioner or the head. It was plugged at one time, but was still installed. I removed that one as well. That left three intake seacocks. I could eliminate the deck wash down thru-hull, which is currently located under the cabin sole in the forward cabin. However, that would require a long hose run from the manifold in the main cabin. I have discovered that hoses filled with sea water are a major source of foul odor on board. Therefore I'll keep that hose run short and leave the forward intake seacock alone. |
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| While I had the yard replacing thru-hulls I had them also install the thru-hulls for the new depth sounder (right, below) and knot meter (left, below). These are located under the cabin sole hatch in the forward cabin. |
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The seacock visible just forward of the raw water strainer with the white hose is the overboard discharge for the head. The original seacock for this function was back up under the cabin sole, and very difficult operate, much less service.
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| Propeller |
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| Above on the left is the propeller shaft. I replaced the strut bearing during this haul-out. The picture on the right of the strut bearing seems to show a slightly miss-aligned shaft in the strut. Not sure if this is a problem or not. I walked around the boat yard looking at other boats with shaft struts and none seemed to be any better aligned. This is another job I left to the yard. |
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| Maxprop |
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| On April 12 I moved Sarah from Zahniser's back to her berth at the Town Creek Landing marina. I was extremely pleased with the control I had maneuvering Sarah out of the slip in Zahniser's and docking her in Town Creek. The next step is to see what benefit I get in light air sailing. |
| Stuffing Box |
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| Hull Cosmetics |
| Below are pictures of Sarah shortly after she was hauled and blocked up. I would like to have the entire hull Awlgripped dark blue, but that is beyond currently what I can budget. Therefore my ambitions for the hull have been reduced to a thorough compounding and waxing of the hull, and having the boot and waterline stripes re-painted. |
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| Bilge Mess | ||
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I originally secured the valve portion of the manifold to the support board with U-bolts. However, I discovered it was necessary to install the support boards first then attach the manifold. With the boards in place is was impossible (or nearly so) to secure the U-bolts with nuts and washers on the back side of the board. So I discarded the U-bolt approach and secured the manifold to this support board with hose clamps that were screwed into the board. This is not as secure as the U-bolt configuration, but still strong enough to take the force of opening and closing the valves. The two centrifugal pumps visible in the pictures below are for the refrigeration and air conditioner. They will be installed on the shelf just aft of the LectraSan. |
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Below is the pump arrangement prior to installation. |
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On the right and below are pictures of the pump and the switch connected together with hose clamps. The inaccessibility of the pump once installed motivated me to test the pump and switch before I started the installation. The test bed is shown below, right. I filled the tub with water and hooked the pump electrical wires to my car battery. My original arrangement used a much larger pump. Testing proved that the impeller on the larger pump was broken. So I have substituted a smaller pump until I get the larger pump repaired or replaced. Without prior testing I would have completed the installation not knowing that the pump was not operational. Testing would have required filling the bilge sump with water and then discovering I would have to pump out the water with the manual pump in the cockpit. |
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This past weekend (June 14) I enlisted the help of a friend who convinced me that leaks are not the result of back pressure, but the result of poor seals at the hose connections. By this time I was down to one leaking connection which I believed I had previously tightened. I had apparently forgotten to tighten the hose clamps on this connection it was loose.. We tightened those clamps and no more leaks. I had spent nearly a month of weekends chasing a non-existent back pressure problem when the only problem I had was one of tightly sealing the connections. My friend also showed me how the common white sanitation hose we all use is very difficult to seal with just hose clamp pressure. It is more effective to slightly soften the hose end with a heat gun and then push it over the hose barb and clamp it. The softened hose will conform to irregularities in the barb in a way the cold hose will not no matter how much pressure is applied with the clamps. Turns out the back pressure I was so concerned about is the normal pressure exerted by the 4' lift to the top of the anti-syphon loop and nothing to be concerned about. The head appears to be working perfectly with no leaks. |
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| 2006 Head Clog |
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With a number of right angle elbows and Ts in the head plumbing I was very
aware of the possibility of the output lines becoming clogged. In
particular I was concerned about the build up of calcium at each of the
congestion points, further restricting the water flow and possibly resulting
in a blockage. Because of this concern I routinely flushed the system with
vinegar and left it for a week to dissolve any deposits on the inside of the
hoses and fittings.
Removing the blockage was fairly unpleasant, but not difficult. However I could not remove very much of the calcium deposits on the inside of the hoses and fittings. This calcium has effectively reduced the inside diameter of the sewage hoses from 1-1/2" to about 3/4". Cleaning all of the deposits out of the hoses or replacing them will take several days. So I continued to cruise Sarah on the Med with the restricted flow through the hoses. I plan to disassemble the entire system over the winter of 2006/2007 and restore the full water flow. |
| 2007 Head Clog |
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When sailing back to the USA at the end of
Sarah's Atlantic Circle the head
once more clogged. This time we were at sea about 5 days out of
Bermuda enroute to the Chesapeake Bay. As unpleasant as clearing the
clog was the previous year, at least then I was in a marina. Words
cannot describe how unpleasant it was to get the head back in working order
while underway. I have resolved that this will be the last head clog I will experience on Sarah. In December, 2007 I ordered an Airhead composting head. It was delivered in March, 2008. Once it was installed all of the sewage hoses on Sarah, including the LectraSan, were removed (see below). Details on the Airhead and the installation on Sarah are described on a separate page that can be found in the Equipment Upgrades menu at the top left of this page or by clicking here. |
| 2008 LectraSan Removal |
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I could have removed the LectraSan without dismantling the manifold, but it would have required jockeying the LectraSan a bit. In the process of removing the manifold I discovered several components had deteriorated significantly. In the picture on the left the manifold is upside down on the dock. |
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What I wasn't expecting was the amount of sludge in the bottom of the bowl. I knew the water in the bowl was murky from the times I cleaned the basket, but I thought that was just the remains of the dead barnacles. If I'd had access to a wet vacuum I would have pump out the bowl and discovered the bowl was nearly 1/4 full of sludge. I could have drained the bowl by removing the plastic drain plug, but I was paranoid about dropping the plug into the bilge and not being able to retrieve it. So I left the plug alone. |
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I no longer need the valve that previously served the PHII toilet (the one on the "T" next to the strainer bowl in the picture on the left), but I will keep that valve as I'm considering the installation of a water-maker and that valve (or its replacement) can be used for that purpose. |
| New Manifold |
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Part of the problems was that I installed this manifold in 2003 and then basically forgot about it. I didn't document how I put it together and I just assumed it would last for the duration of my ownership of Sarah. In addition to the deterioration of the manifold hardware I also created some problems for myself when removing the hardware and pumps. Not only did I break the hose barb on the manifold (see above) I also broke off the hose connection on the pump output to the A/C. So in addition to replacing the manifold I also had to replace one of the pumps. |
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The real problem was when removing the pumps and manifold I thought I knew exactly which hoses were for which system. This turned out to be a major mistake, and it caused me repeated trips to WM and Loews for plumbing adapters. Finally on Wednesday, July 9 I was able to get everything back together. The frig is now back in operation. I tested the A/C and was surprised it worked better than before - much fewer cycling of the compressor. Maybe that pump I broke really wasn't up to the job. I found that the manual galley seawater pump was frozen. Nothing to do with my re-installation - I believe it seized due to lack of use. I wanted to replace it anyway so a new pump is on order. I also ordered backup magnetic drive pumps for both the frig and A/C. Anyway, after nearly two weeks with no frig or A/C these systems are finally working. The real lesson learned is that I need to take these system apart if not annually, at least every couple of years to clean and refurbish them. |
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After a few days of operation I discovered the A/C water pump was not up to
the job. It could not deliver sufficient water to the A/C and the A/C
repeatedly shut down. I replaced that pump with the one I had just
ordered as a backup and full water flow appeared to have been restored. Appearances are deceiving. After a few hours of operation the A/C shut down again. Now I had the problem of an airlock. I disconnected the 1/2" output hose from the pump and allowed solid water to flow out of the pump to insure it was flooded. Then I reconnected the output hose and turned on the A/C. The pump and compressor came on and ran for 30 - 45 minutes until the cabin temperature reached the thermostat setting. Then the A/C compressor cycled off as normal and turned off the pump. About 5 minutes later the compressor cycled back on, but the pump was not pushing any water. Within a minute the A/C shut down because of the lack of water flow through the condenser. I fought this problem for several days, tightening hose clamps and fittings. I had tried two different pumps of the same model on this application and neither provided sufficient water flow for the A/C. I was considering taking the whole manifold apart and re-configuring it for more direct connection to this pump. Before I did that I decided to replace the A/C pump with the backup pump I purchased for my refrigeration. The A/C pump is a March LC-3CP-MD and the frig pump is a March LC-2CP-MD. Hooking up the 2CP required several more trips to WM for pipe and hose adapters as the ports on the 2CP are smaller than those on the 3CP. Finally I had the frig pump hooked up to the A/C and wonder of wonders it works! The A/C cycles off, but now when it cycles back on the pump is delivering a steady stream of water. The water flow out the through hull is significantly greater than what I achieved with the 3CP pump (before it air locked). The picture on the right shows the 2CP pump installed in place of the 3CP. I still have to secure the pump and the electrical wiring. |
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and sorry, I've created a schematic of the manifold in Visio. |
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I sent the newly purchased 3CP pump back to DEPCO for warranty service
expecting to get a new or repaired pump in return. I was very
disappointed by the call back from DEPCO when they told me the problem was
the marelon right angle street elbow I had installed on the output of the
pump. DEPCO maintained that the seat on the street elbow was too deep
for the pump fitting and had impinged on the pump impeller, eventually
breaking some of the plastic fittings in the pump. I was very
skeptical of this analysis, but had little choice but to pay for a new face
plate on the pump. When I received the repaired pump and the broken parts from DEPCO I could see they were correct. The Marelon street elbow has and extension beyond the pipe thread. The fitting on the pump was designed for standard pipe thread. That is the reason the 2CP worked in place of the 3CP. Because of the smaller pipe thread on the output of the 2CP I had to use a standard bronze street elbow that does not have an extension beyond the thread. So the problem with both pumps was the hose barb fitting I had chosen. Now I have lots of spare pumps. |
| Adding More Water Flow Capacity to the Low Volume Manifold |
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The Low Volume Manifold that I originally installed in 2003 and rebuilt in
2007 has served me well. The 1" ID intake provides sufficient water
flow to support the SeaFrost SA-II refrigerator and the Air Conditioner as
well as the sea water pump in the galley. I believe it would also
provide sufficient water delivery for an average water maker should I
install one. That believe is based on the assumption that I would
never run the A/C and the Water Maker at the same time. So the Water
Maker would only compete with the frig for the available water flow from the
1" thru-hull. Of course the Water Maker manufacturers all claim that their product must have a dedicated thru-hull intake. That makes no sense if the water intake flow is sufficent to satisfy all of the demands with a significant safety margin. If I ever do install a Water Maker it will be connected to the first valve on the manifold (the one previously used to deliver sea water to the flush toilet), so if there is any water delivery issue on the manifold it will be the frig that will be starved for water not the Water Maker. I think I understand why the Water Maker manufacturers demand a dedicated thru-hull - to avoid warranty and customer satisfaction issues from an improperly designed manifold. Although I believe my manifold would accommodate any Water Maker that required a 3/4" intake or less I also would not want to have to argue my way through a warranty issue if the manufacturer insists that anything other than a dedicated thru-hull will void the warranty. So I started to look at how I could modify my manifold to eliminate that issue. |
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The first issue I believe I needed to deal with is that although my
thru-hull and ball-valve provide full 1" flow, the first thing the water
hits after the valve is 1" hose barb. The hose barb immediately
reduces the ID of the delivery pipe to about 3/4" ID. If the Water
Maker specifies a 3/4" delivery and uses a hose barb on the Water Maker
intake, they are really specifying a 1/2"-5/8" delivery. So that 3/4"
intake capacity should still be more than sufficient to provide 5/8"
delivery to the Water Maker and 1/4" delivery to the frig. The
combined demand of these two deliveries is approximately 0.45 "2 while
the 3/4" intake provides water flow through 0.56 "2 .
Still, maybe I should have a greater safety margin on this delivery. I became confinced that I should have a greater safety margin after spending the summer and fall at the BridgePointe Marina on the Trent River in New Bern, NC. I thought, when I took a berth at this marina, I was dealing with mostly freshwater. The river current does reverse with the tides, but very slightly. Mostly the current runs weak to strong down river to the Neuse and the ocean. I was then greatly surprised at how quickly the raw water strainer filled with debris and severely reduced the water flow through the manifold. I had to clear the strainer basket every 5-7 days to keep both the frigh and A/C running (it gets hot in NC). So although I wouldn't be running a Water Maker in these conditiions, it showed me that it didn't take much to reduce that 3/4" effective flow to less than 1/4". So I decided I needed to modify the Low Volume Manifold to insure I could maintain the necessary water flow to support both a Water Maker and the frig when anchored or under way and the frig and the A/C when in a marina. |
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When I installed the AirHead Composting Toilet in 2008 I freed up one 3/4"
intake on the manifold, but I also freed up the 1-1/2" outake. The simplest way to
provide full 1" water flow to the manifold was to switch the manifold from
the 1" intake to the 1-1/2" (now) intake.
In fact I loosened the thru-hull when trying to free the hose barb and it had to be re-bedded before Sarah was re-launched. If I had attempted this while in the water I would likely have generated a leak. |
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