Maxum 4600 SCB, Owner'S Manual Supplement

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28 Chapter 2: Components/Systems
4600 SCB Owner’s Manual Supplement
Sta n d a r d M a r i n e H e a d S y s t e m
Your yacht comes with a marine head (toilet) and holding tank system. Be sure to read the manufacturer’s operation
manual included in your yacht’s owner’s packet. The standard marine head system installed on your yacht uses raw
water to flush waste from the toilet directly into the holding tank.
•
The raw water intake seacock is located inboard of
the holding tank and must be opened prior to using
the head system. The seacock should be left closed
whenever the yacht is left unattended.
•
The holding tank is plumbed to a fitting on the star-
board deck for dockside pump-out and to a macerator
pump for pumping waste directly into the water
through an underwater discharge seacock (where reg-
ulations permit). The macerator switches are located
at the helm and must be pressed simultaneously for
pumping to occur.
•
The holding tank is equipped with a level indicator
(located on the forward bulkhead in the head). Even
so, it is advisable to empty the holding tank at every
opportunity.
Manual Flush Marine Head Operation:
1. OPEN the head’s raw water intake valve (seacock).
2. Before using the head, pump enough water into the
bowl to wet the sides.
3. After use, pump until the bowl is thoroughly
cleaned. Continue pumping a few more times to
clean the lines. If excess waste causes the water to
rise in the bowl, stop pumping until the water
recedes.
•
If you are unable to pump water into the bowl, the
probable cause is debris in the pump diaphragm. To
remedy this, shut OFF the raw water intake valve
(seacock) and dismantle the pump. The pump is gen-
erally held together with six screws (the design is
simple and the problem will be obvious when the
pump body is split open).
•
To winterize the head, shut OFF the intake seacock
and pump until the bowl is dry. Remove the drain
plug in the base and pump again to remove all of the
water. DO NOT fill the bowl with antifreeze.
Macerator Delete Head System (Option)
Since this optional system does not contain a macera-
tor, the holding tank is plumbed to a fitting on the deck
for dockside pump-out only.
HOLDING
TANK
UNDERWATER
DISCHARGE
SEACOCK
STANDARD HEAD SYSTEM ROUTING
Y-FITTING (TYPICAL)
RAW WATER
TO PORT
RAW WATER
TO STBD. HEAD
WASTE FROM
STBD. HEAD
REDUCING
ADAPTER
RAW WATER
INTAKE VALVE
(SEACOCK)
HEAD
VENT TO THRU-HULL
HOLDING TANK
PORT HEAD
WASTE
FROM
MACERATOR
AFT
TO DOCKSIDE PUMP-OUT
DECK FITTING
NOTI CE
Check with local authorities for regulations regarding
the legal use of marine head systems.
HOLDING
TANK
RAW WATER
INTAKE VALVE
Y-FITTING
RAW WATER
TO PORT
WASTE FROM
STARBOARD HEAD
(TYPICAL)
WASTE FROM
PORT HEAD
(SEACOCK)
HOLDING TANK
VENT TO
THRU-HULL
AFT
RAW WATER TO
STARBOARD HEAD
HEAD
DECK FITTING
TO DOCKSIDE PUMP-OUT
MACERATOR DELETE (OPTION) HEAD SYSTEM