Fresh and Waste Water Systems &nbs= p; Chapter
11
Water everywhere but nothing=
to
drink. That’s the worst case. In most cases the ship’s wat=
er
system is the equivalent of a small municipality.
|
W |
Water Maker
See MaxQ manual. &n= bsp;
The water =
maker
should be used to top up the tank on a regular basis. It supplies 1500 GPD,=
or
over 1 gallon per minute. After initialized, the manufacturer recommends no
longer than two days pass without running the water maker. Should you leave=
the
boat unattended and wish to de-commission the water maker, follow the
manufacturer’s instructions for fresh water flush or chemical wash. <=
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w:st=3D"on">
The water = maker was a sea water input, a brine output, a fresh water output, and a fresh wa= ter flush input. Operation of the water maker is automa= tic and it will automatically follow a cycle to make water, flush, and shut dow= n[WW1] .
The water =
maker is
plumbed to the sea chest manifold via a low pressure pump. Sea water from the low pressure pu=
mp is
filtered to remove large particles and contaminants before entering the wat=
er
maker’s high pressure pump in the filter mounted on the side of the w=
ater
maker. This filter should be checked regularly. The high pressure pump raises the
pressure to over 1000 PSI and forces it into a reverse osmosis membrane.
The output= of the water maker is fresh water which is plumbed to the water tanks via a fill v= alve located at the top of each water tank in the forward bilge. Insure at least one of these valve= s is open when running the water maker. A fresh water flush has been plumbed into the water maker from the h= ouse pressure water system and is automatically used to flush the membranes after each water-making session.
Follow instructions in the MaxQ manual to operate the = water maker.
![](3D"Fresh&WasteWater_files/image002.gif")
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Water Tanks
Two 250 ga= llon fresh water tanks are built into the double hull at the bow of the ship on = each side of the bilge. The tanks = are internally baffled with clean out panel accessible from the forward bilge.<= span style=3D'mso-spacerun:yes'> Each tank can be filled from the w= ater maker via a valve at the top of the tank in the forward bilge. The tanks can also be filled from = fill caps located in each side of the Portuguese bridge. A vent for the tanks is also locat= ed adjacent to the fill in each side of the Portuguese bridge.
A water le= vel sensor monitors the water level and displays it on the Computank monitors at the helm and fueling station. The Computank monitor uses a solid state sensor and is calibrated with the tank geometry in order to read the tank level in gallons.
The tank o= utput is drawn from the bottom of the tank in the forward bilge. If valves for both tanks are opene= d, it will allow the tanks to equalize levels.&n= bsp; On a passage one of the tanks could be shut off from water making and usage, to serve as a reserve tank should a malfunction occur in the active tank. The common output from = the tanks is filtered and plumbed to two pressure pumps to provide ship water pressure. The filter should be checked occasionally for contamination.
Ship Water Pressure System
Water from= the tanks can be routed to either of two pressure pumps for ship water pressure. The pumps are locat= ed in the starboard bilge cavity between the water tank and the forward fuel bunk= er. Valves for the selected pump are o= pened and the switch above the pumps, selects which pump is active. The enabled pump is activated by a pressure switch on the water line and operates when the water pressure is b= elow the minimum setting. A reserve/pressure tank, located outboard of the pumps, absorbs the flow and equalizes the pressure. A che= ck valve prevents water from flowing back to the tank when the pumps reach the= set pressure. The check valve also prevents shore water from the cockpit shore water connection from entering = the tanks through the pump plumbing.
The out pu= t of the pumps and pressure tank is the cold water supply for the ship. It is routed along the starboard s= ide of the bilge to the utility room, then up the forward wall and across the ceil= ing to the engine room. Water for= the various uses in the ship is tapped from this line along its path. In the engine room it is connected= to the shore water line. =
Caution: D= o not allow the fresh water pressure pump to run dry or the pump will burn out. <= /span>
Fresh Water Checklist<= /h3>
To run the= ship from the ship’s tanks:
1.<= span style=3D'font:7.0pt "Times New Roman"'> Open the Outlet valve from whichever Water Tank(s) you wish to use.
2.<= span style=3D'font:7.0pt "Times New Roman"'> In the forward bilge, turn the selector switch on the Fresh Water Pumps to the pump you wish to use.
3.<= span style=3D'font:7.0pt "Times New Roman"'> Ensure the breaker is closed for that same pump.
4.<= span style=3D'font:7.0pt "Times New Roman"'> Open the Inlet and Outlet valve to that pump.
5.<= span style=3D'font:7.0pt "Times New Roman"'> Start the Fresh Water Pump.
Shore Water
The shore = water line, connected at the port side of the cockpit bulkhead, provides ship wat= er pressure when connected. It i= s prevented from back flowing into the fresh water tanks by the check valves at the pumps. The shore hose fitting= has a pressure-limiting device so your onboard water system will not be damaged by high dockside pressure.
If filling= the tanks from the shore water connection is desired, they must be filled throu= gh the fill caps in the Portuguese bridge using the hose bib located in the starboard Portuguese bridge. = When the shore water is disconnected, a check valve in the shore connection prev= ents water from exiting from the shore connection.
Note: For winterization the shore line can be drained in the engine room, the hose bi= b in the forward head ceiling, and the shower from the engine room.
Shore Water Checklist<= /h3>
To run the= ship from the ship’s tanks:
1.<= span style=3D'font:7.0pt "Times New Roman"'> Shut off breakers to ship’s water pumps (optional).
2.<= span style=3D'font:7.0pt "Times New Roman"'> Connect shore water to cockpit shore water connection and turn on at shore. =
Hot Water
Cold water= is heated first by passing through a plate heat exchanger that is heated from = the furnace glycol line. Then it = is heated further in the hot water tank via an internal heat exchanger which a= lso draws from the furnace glycol line. On exit from the water tank, it is mixed with cold water to a preset temperature to insure a constant temperature of the hot water. Hot water is in continuous circula= tion through the fresh water plumbing trunk.&nb= sp; When a tap draws hot water, it only has to travel from the bilge lin= e to the tap, providing almost instant on hot water. The circulation of the water is constantly passing the water through the plate heater and the heat exchanger tank.
A temperat= ure sensor on the plate heater fires the furnace when needed to heat water. The furnace must be turned on at t= he utility room breaker panel to run the high capacity water heating. A lower recovery rate, electric co= il heater is built into the water tank. It is also turned on at the utility room breakers and can be used to augment the furnace or when water demands don’t require the furnace capacity.
When hot w= ater is being consumed, additional cold water is pre-heated through the plate excha= nger first then fully heated in the hot water tank so that it is warmed prior to exiting the tank. This provid= es nearly unlimited hot water.
Gray= Water:
All of the=
sinks,
showers, washer, and air conditioner drains feed to the gray water sump.
If the pum= ps are not operational the gray water will back up into the master stateroom showe= r or the master stateroom air conditioning condensation pan, as these are the lo= west points in the gray water system.
Two gray w= ater pumps are located in the starboard side of the mid bilge. Both are fully wi= red and plumbed. Should one of the pumps fail, change the valves according to t= he labels in the space by the pumps to the other pump. Also change the toggle switch on t= he electrical box above the pumps to the other pump. The breaker is in the 24 v panel in the utility room.
![](3D"Fresh&WasteWater_files/image004.gif")
<=
![endif]>The shutoff for the galley sinks is in the port forward
wardrobe in the master stateroom and the gray water pump seacock and discha=
rge
is in the access panel under the office desk.
Gray Water Checklist
CAUTION: DO NOT OPERATE VALVE WITH PUMP R= UNNING AS THIS WILL COLLAPSE THE NON-RETURN VALVE IN THE PUMP. NO DAMAGE IS CAUSED BUT THE PUMP= MUST BE DISASSEMBLED TO REVERSE THE VALVE. |
1.<= span style=3D'font:7.0pt "Times New Roman"'> All the drains go directly to the Gray Water Tank.
2.<= span style=3D'font:7.0pt "Times New Roman"'> Ensure that the Grey Water system Overboard valve is open.
3.<= span style=3D'font:7.0pt "Times New Roman"'> Select which Gray Water Pump you wish to use by turning the handle on the 3-way va= lve assembly. (Expose the arrow on the valve assembly pointing to the pump you = want to use.)
4.<= span style=3D'font:7.0pt "Times New Roman"'> Close the breaker to the Gray Water pumps.
5.<= span style=3D'font:7.0pt "Times New Roman"'> Ensure that the switch on the electrical box in the bilge is set to the same pump = you have selected.
1.<= span style=3D'font:7.0pt "Times New Roman"'> Switch the pump to Auto mode.
MSD
The ship is equipped with a Type II Marine Sanitation Device (MSD). All the toilets go directly to the= MSD Tank. The effluent is treated= in a series of chamber with in the MSD in a similar manner to a landside waste treatment plant. At the end o= f the process the output flows to the Black Water Tank.
The MSD re= quires regular maintenance and chemical replenishment. See the MSD manual for operation, service and maintenance information.
Treated Black Water
Check the = level of the black water (sewage) tank regularly.&n= bsp; Do not overfill, as sewage will back up into the MSD and the toilets will back up. The treated sewage tank (black water) tank level monitor is located on the helm and fuel transfer station on the same panel as the fuel tanks and fresh water (domestic water supply).
It is the responsibility of the operator to know the local regulations for the discharging of sewage (black water) overboard.
CAUTION: DO NOT OPERATE VALVE WITH PUMP R= UNNING AS THIS WILL COLLAPSE THE NON-RETURN VALVE IN THE PUMP. NO DAMAGE IS CAUSED BUT THE PUMP= MUST BE DISASSEMBLED TO REVERSE THE VALVE. |
![](3D"Fresh&WasteWater_files/image006.gif")
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There are = two macerator pumps installed in the mid bilge. Both are plumbed into the system f= or overboard discharge. The pump= is self-priming. The breaker is = on the utility room 24 volt panel. C= hange over the intake valve and the switch for the macerator pump selection next = to the pumps.
Note: Insu= re that the seacock in the access panel in the office is open when the pump is powered.
Note: Do n= ot run either of the macerator pumps dry or you may burn them out.
The macera= tor pumps are self-priming, but if the boat has been left unattended for some t= ime it may take several seconds for it to prime. You will hear the change in to= ne in the pump when it begins pumping sewage.
Use the ma= cerator pump to regularly lower the level in the tank, rather than allowing the tan= k to fill, then emptying the whole tank. Regularly lowering the level assures the sewage tank will not overfill, and also the pumps will be run more frequent= ly for a shorter period of time.
Dock pump-out of sewage (black water):
The suctio= n pipe fitting for the black water deck pump out is located in the port side of the Portuguese bridge. It is the 1 1/2” pipe with a NPT coupling and plug. Remove the plug and attach the fitting for the shore pump-out hose. The valves must be open for the de= sired chambers to be pumped out. Th= e pump out can suck from the black water tank and two of the MSD tanks. Typically the valves can be set to= suck from the black water tank and the MSD tanks left to continue processing.
Blac= k Water Discharge Checklist
Ensure that the Black Water system Over= board valve is open.
Select which Black Water Pump you wish = to use by turning the handle on the 3-way valve assembly. (Expose the arrow on the valve assembly pointing to the pump you want to use.)
Close the breaker to the Black Water Pu= mp.
Ensure that the switch on the electrica= l box in the bilge is set to the same pump you have selected.
Switch the pump to Manual mode.<= /span>
Toilets:
There is a fresh water shut-off valve = at the back of each toilet, below the cover[WW2] .
Pressure Washing
A high-pressure wash system (Duplex Plunger 2 GPM@11= 00psi) is located in the utility room on the starboard side. The breaker for the u= nit is located on the utility room electrical panel. The breaker may be switche= d on and left on while washing the deck, with the wand on the end of the hose regulating the flow of water. The pressure wash uses fresh water from the domestic water supply system.
There are outlets on the aft deck and in the Portugu= ese wall. Connect the pressure wash hose with the quick connect fitting and open the valve to operate.
There is a ‘chemical’ supply connection = on the unit that can be used as a soap dispenser for the unit. See the manual.