Baja Marine 242 manual Electrical Systems, Direct Current DC, Batteries, Ignition Protection

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Section 6 • Electrical Systems

1.Electrical Systems

Direct Current (DC)

The 12 volt direct current (DC) electrical system (similar to that in your car or truck) derives its power from the battery. An engine-driven alternator keeps the battery in a charged condition. The battery voltage is indicated by the voltmeter on the helm panel. The negative terminal of the battery is attached to the grounding studs of the engine.

Ask your dealer for a careful analysis of DC power needs on your boat. It may be necessary to add batteries or auxiliary charging methods to supply adequate power for any additional accessories you wish to add.

A.Batteries

!DANGER

DO NOT USE JUMPER CABLES IN THE ENGINE COMPARTMENT.

They can cause an explosion from sparks.

!DANGER

A battery will explode if a flame or spark ignites the free hydrogen given off during charging.

Never use an open flame or strike sparks in the battery area.

The battery installed in your boat has been selected for its ability to furnish starting power based on engine starting requirements, as well as its ability to power the DC accessories attached to the electrical system. Your Engine Operator's Manual indicates the recommended battery for the engine installed in your boat.

!CAUTION

To prevent arcing or damage to the alternator, always disconnect battery cables before doing any work on the engine's electrical system.

To remove the battery cables:

1.Turn off all items drawing power from the battery.

2.Remove the negative cable first, then the positive cable. To replace the cables, first replace the positive cable, then the negative.

Battery Maintenance

Check the fluid level in the cells approximately every 4 weeks, and weekly in summer and hot zones.

The fluid level must be between the lower and upper markings.

Replenish only with distilled water. Do not use metal funnels.

Coat battery terminal clamps with silicone grease. Keep batteries clean and dry.

Battery life is shortened if it is drained to zero charge before recharging. It is recommended that a battery not be discharged more than 50 percent. If the battery does become run down, recharge it as soon as possible.

Running the engine to recharge the battery may not be effective. The alternator only creates charging power at higher engine speeds, so simply idling or trolling will not generate enough power to recharge the battery.

If you need to charge a battery, only use a battery charger designed to charge automotive/marine batteries. Use charger only when batteries are disconnected from the boat's electrical circuit. Follow the charger instructions.

If your boat will not be used for several weeks or more, remove the batteries from the boat and connect them to a charger.

B.Ignition Protection

All electrical components in the engine compartment must be ignition-protected to avoid the possibility of creating sparks in a gasoline environment.

242 Islander®

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Contents Islander Baja MarineFor information call 1-865-971-6270 or fax Welcome This page intentionally left blank Introduction Service, Parts and Repair for Your Boat Hull Identification Number HINManufacturer’s Certification About Your Express Limited Warranty Iii Ignition Protection Breakers and/or Fuses Speed changes you. TM Safety Labels SafetyLegally Mandated Minimum Required Equipment Carbon MonoxideFire Extinguishing System Carbon Monoxide Monitor Lifesaving Equipment Additional Recommended Equipment for Safe Operation Impaired OperationLoad Capacity Stability Power CapacityMaintain Control WeatherGeneral Considerations Chart Your Course Water Sports SwimmingSkiing Water Rescue Emergency SituationsGeneral Medical EmergencyFire Flooding, Swamping and CapsizingCollisions and Leaking Propulsion, Control or Steering Failure Safety HotlinesInternational Requirements GroundingWake/Wash Environmental ConsiderationsWaste Disposal Excessive NoiseNautical Terms Key to Symbols on Controls & Prints This Page Intentionally Left Blank Baja Marine Corp This Page Intentionally Left Blank Docking /Lifting /Trailering Passenger Locations General Boat ArrangementBoat Dimensions and Clearances Fig Basic Boat Dimensions and Clearances Metric Propulsion SystemPropellers General Deck Layout Power Trim Unit and Gauge Description of Major ControlsGear Shift and Throttle Control Trim Tabs Trailer SwitchTachometer and Hour Meter Ignition Shutdown SwitchEngine Alarm System Important GaugesNavigation and Anchor Lights Oil Pressure, Water Temperature, Voltmeter and Fuel GaugesPre-Launch, Launch and Post- Launch Checklist Using Your BoatFueling the Boat Trailer Launching and LoadingPersonal Flotation Devices BoardingStarting the Engine Passenger Instruction and LocationStopping the Engine Shifting to Drive the BoatSteering System Power Steering SystemBilge Pumps Bilge & Underwater GearBilge Fuel & Oil SpillageVibration and Causes Maintenance and ServiceEngines and Stern Drive Bilge BlowersImpact to Stern Drive Propeller Removal and InstallationGear case Fuel System Fuel SystemAnti-Siphon Valve Inboard/Outboard Engine Only Fueling Precautions Before and During Fueling ChecklistStatic Electricity and the Fuel System After Fueling Checklist This page intentionally left blank Batteries Electrical SystemsElectrical Systems Direct Current DCElectrolytic Corrosion & Zinc Anodes Breakers and/or FusesFuse Panel Marine Electronic Cathodic Anti-corrosion System Mercathode Drive Pump Drive Pump w/ K-Plane Trim Tabs Ignition Switch Switch Panel Wire Information FIG This Page Intentionally Left Blank Options & Accessories Locations Options & AccessoriesAutomatic Fire Extinguisher System Option Fire Extinguisher PortCanvas Horn Canvas Care and MaintenanceSwim Platform w/ Ladder Optional Depth Finder OptionalPortable Head with Pump-Out Stereo SystemHead Systems Requirements for OperatorsHolding Tank Operation Exhaust SystemsVacuFlush Head Option Vent FilterRequired Inspection, Service Maintenance Summary Guide for Inspection, Service and MaintenanceInterval Interval Summary Guide For Inspection, Service and MaintenanceUseful Service Information Bilge Area Inspection, Service and Maintenance ProtocolBoat Storage Winterization Checklist for Boats Stored on LandBatteryies Topside and SuppliesMiscellaneous Fitting Out After StorageFuel Systems Fuel SystemSecurity Considerations Power Steering System MaintenanceQuick Reference Checklist Boarding the Boat GeneralBoat Systems Starting the Engine Returning to Port General Quick Reference Checklist cont’d Departing GeneralQuick Reference Checklist cont’d Securing the BoatIf the Engine Does Not Start After Market Equipment Checklist Maintenance Log Maintenance Log Cont’d Fiberglass & Gelcoat Paint Cleaning Agents & Other SubstancesCare & Refinishing Stains & ScratchesCanvas and Clear Vinyl Permanently Moored or Docked BoatsTopside Areas Acrylic Plastic Sheeting Plastic GlassInterior Upholstery Fabric Exterior Upholstery FabricThis Page Intentionally Left Blank Index Index Islander