Dc Electrical System; Circuit Breakers And Fuses; Batteries; Battery Maintenance - Maxum 3700 SCR Supplemental Owner's Manual

8 Chapter 2: Components/Systems
SHOCK & ELECTRICAL SYSTEM DAMAGE HAZARD!
Never disconnect the battery cables while the engine is running since it can cause
damage to your boat's electrical system components.
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.

DC Electrical System

Your yacht is equipped with a 12 volt DC (direct current) system.
Your yacht's DC main distribution panel is located inside the
AC/DC cabinet on the starboard side of the salon.

Circuit Breakers and Fuses

Circuit breakers and fuses for engines, main accessory power
and optional windlass power are on the DC panel and on the
battery switch panel. Electronics power is provided at the
upper helm station. Some equipment, such as depth finders and
shower pumps, may have secondary fuse protection at the unit.

Batteries

The batteries, located in the generator compartment, supply electricity for
lights, accessories, as well as engine and optional generator 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 (voltmeters). The condition of
the accessory battery can be read on the starboard engine voltmeter when
the accessory battery switch is activated.

Battery Switches

• A separate rotary battery switch is provided for each battery installed
on your yacht. Battery switches are located under the cockpit sink.
• An emergency crossover (parallel) switch at the helm enables you to
start an engine using both engine batteries if the designated engine
battery is low.
!
• The crossover switch should be turned on only in emergencies.
• Never disconnect battery cables or turn off main battery
switches while engines are running as this can cause damage to
your boat's electrical components.
37OO SCR Sport Yacht
!
C A U TI O N !
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Owner's Manual Supplement
CAUTION!
NOTICE
BATTERY
(TYPICAL)
VIEW OF STARBOARD SALON
AC PANEL
DC PANEL
AC/DC
CABINET
BATTERY LOCATIONS
PORT ENGINE
& OPTIONAL
GENERATOR
BATTERY
STARBOARD
ENGINE
BATTERY
AFT
BATTERY SWITCHES ARE LOCATED
UNDER THE COCKPIT SINK
SWITCH
ACCESSORY
BATTERY