Maxum 4100 SCB, Owner'S Manual Supplement

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Chapter 2: Components/Systems 27
4100 SCB Owner’s Manual Supplement
Air Conditioning Condensation Drain Routings
M a r i n e H e a d & H o l d i n g Ta n k S y s t e m
Your boat comes equipped with a marine head (toilet) and
waste tank system. Be sure to read the manufacturer’s opera-
tion and maintenance manual included in your boat’s
owner’s packet.
Standard Marine Head System
•
The standard marine head installed on your boat 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 intake seacock should be left CLOSED
whenever the boat is left unattended.
•
The holding tank is plumbed to a fitting on the deck for
dockside pump-out and to a macerator pump for pump-
ing waste directly into the water through an underwater
discharge seacock (where regulations permit). The
macerator switches, located at the helm, 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 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 generally 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.
FROM AIR CONDITION
PUMP TO THRU HULL
V-BERTH AIR
CONDITION UNIT
FROM AIR CONDITION
PUMP TO THRU HULL
AFT
SALON AIR
CONDITION UNIT
TO DECK PUMP-OUT FITTING
HOLDING
TANK
TANK VENT
STANDARD MARINE HEAD SYSTEM ROUTING
MACERATOR PUMP
TANK TO MACERATOR
TO HULLSIDE VENT
AFT
HOLDING
TANK
UNDERWATER DISCHARGE SEACOCK
FROM
HEAD
WASTE
NOTI C E
Check with local authorities for regulations regarding the legal use of marine head systems.