8 Chapter 2: Components/Systems
4100 SCB Owner’s Manual Supplement
DC Electrical System
Your yacht is equipped with a 12 volt DC (direct current) system. The DC main distribution panel is located on the
starboard side of the salon below the dinette seat cushion (or optional lower helm seat cushion).
Fuses and Circuit Breakers
•
Fuses and circuit breakers for engines, main accessory power and optional windlass power are on the DC main
distribution panel and on the battery switch panel.
• Electronics power is provided at the helm.
• Some equipment, such as depth finders, may have secondary fuse protection at the unit.
Batteries
The batteries installed on your yacht supply electricity for lights and
accessories as well as engine, optional generator and optional
inverter starting.
Battery Maintenance
•
Periodically remove the battery caps and check the electrolyte
level; if the zinc plates are exposed, add distilled water until they
are covered.
• Corroded battery terminals can be cleaned with baking soda and
water. After cleaning the terminals, coat them with a light film of
battery terminal lubricant and tighten all battery connections.
Battery Condition
The port and starboard engine battery conditions can be read on the helm’s instrument panel voltage gauges (voltme-
ters). The condition of the accessory battery can be read on the starboard engine voltmeter when the accessory battery
switch is activated.
Battery Switches
•
There are two battery switches installed on your yacht, located
inside the starboard transom storage tub.
• A battery switch, labeled “PORT ENGINE”, activates the port
engine battery while the starboard engine/house battery switch,
labeled “STBD ENGINE/HOUSE”, activates the starboard engine
and the house battery.
• Battery switches should be switched to the OFF position whenever
the yacht is left unoccupied for long periods of time.
Starting Positions
The port engine battery switch must be turned ON to start the port
engine and optional generator. The starboard engine/house battery
switch must be ON to start the starboard engine. After starting your
boat’s engines or generator, the appropriate battery switches must be
kept ON until the engines and/or optional generator is turned OFF.
SHOCK & ELECTRICAL SYSTEM DAMAGE HAZARDS! NEVER disconnect the
battery cables while the engine is running since it can cause damage to your yacht’s
electrical system components.
CAUTION!
!
Electrical connections are prone to corrosion. To reduce corrosion caused electrical problems,
keep all electrical connections clean and apply a spray-on protectant that is designed to protect
connections from corrosion.
NOTICE
STARBOARD
ENGINE BATTERY
INVERTER BATTERY
PORT ENGINE &
HOUSE BATTERY
GENERATOR
(OPTION)
BATTERY LOCATIONS
(OPTION)
BATTERY
BATTERY
SWITCH PANEL
VIEW OF AFT TRANSOM STORAGE TUBS
INVERTER
(OPTION)
BATTERY BREAKER
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