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8     Chapter 2: Components/Systems

37OO SCR Sport Yacht  

  Owner’s Manual Supplement

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. 

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.

CAU TI ON!

!

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.

NOTI C E

AC PANEL

AC/DC
CABINET

VIEW OF STARBOARD SALON

DC PANEL

PORT ENGINE

OPTIONAL

ENGINE

BATTERY

STARBOARD

ACCESSORY

BATTERY

AFT

GENERATOR

BATTERY

BATTERY LOCATIONS

BATTERY SWITCHES ARE LOCATED

UNDER THE COCKPIT SINK

BATTERY

(TYPICAL)

SWITCH

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.

C A U T I O N !

!

Summary of Contents for 3700 SCR

Page 1: ......

Page 2: ...ontinue models at any time without notice or obligations Illustrations may show optional equipment All Maxum products meet or exceed USCG Unites States Coast Guard and or NMMA National Marine Manufact...

Page 3: ...axum has instituted an ongoing Total Customer Satisfaction Program The guiding principles of this program are Design build and support the finest marine products in the world in every market we serve...

Page 4: ...Autopilot Option 12 Compass 12 Depth Finder Option 12 Radar Option 13 VHF Radio 13 Lighting 13 Navigation and Interior Lights 13 Spotlight Option 13 Appliances 13 TV Telephone Dockside Inlet Option 14...

Page 5: ...ppendix B Wiring Schematics 31 Key to Electrical Symbols 31 Key to Wire Colors 32 Diesel Engine Harness 33 Diesel Dash Harness 34 Gas Engine Harness 35 Gas Dash Harness 36 Deck Harness 37 Hull Harness...

Page 6: ......

Page 7: ...our selling dealer national sailing federation or local yacht club can advise you of local sea schools or competent instructors Engines Accessories Guidelines Your yacht s engines and accessories were...

Page 8: ...or product damage We urge you to read these warnings and the ISO symbols listed in Appendix C carefully Follow all safety recommendations To maintain the integrity and safety of your yacht only quali...

Page 9: ...ap and water The hull below the waterline was painted with anti fouling paint by the factory Occasionally you will need to re paint it with a good grade of anti fouling paint NOTICE To help seal the h...

Page 10: ...sunlounge sink sink sink sink refrig under refrig under sink sink sink sink sink sink sink head head sink sink helm helm tv vcr niche tv vcr niche v berth v berth stowage under stowage under dinette d...

Page 11: ...IT DRAIN OPTION PORT BOW DECK HATCH DRAIN ANCHOR LOCKER DRAIN BOW VIEW TRANSOM VIEW RUDDER PROP SHAFT TYPICAL SACRIFICIAL ZINC ANODE TYPICAL 17 7 5 7 LIFTING SLING LABEL LOCATIONS F O R E F O O T PROD...

Page 12: ...nt Deck Drains Forward Drains Aft Drains DRAIN BOW DRAIN FORWARD BOW DRAIN AFT BOW DRAIN FORWARD DECK DRAIN UNDERSIDE VIEW OF FORWARD DECK PORT SEAT DRAIN ENGINE HATCH DRAIN ICE MAKER DRAIN OPTION HEL...

Page 13: ...this section and the electrical section of the Owner s Manual Elec trical routing illustrations are provided in Appendix A of this supplement wiring schematics in Appendix B WINDLASS WINDLASS FOOT CON...

Page 14: ...s 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 activat...

Page 15: ...Your yacht is equipped with dual dock side inlets which are rated 120v 30 amps or optional 240v 50 amps Dockside inlets are located inside the starboard transom storage tub Since some dockside recepta...

Page 16: ...Do not alter shore power connectors and use only compatible connectors Only qualified personnel should install batteries and or perform electrical system maintenance Before connecting to shore power e...

Page 17: ...the fuel filters separators located near the fuel shut off valve should be serviced as described in the manufacturer s manual The generator runs off the port engine battery The generator s coolant mi...

Page 18: ...adar system which is activated from the helm station Radar provides you with a complete and accurate 360 radar picture of other vessels buoys and landfall surrounding your vessel NOTICE AM radio recep...

Page 19: ...pliances installed on your yacht come with their own manuals supplied in your yacht s owner s packet that explain detailed operating instructions and important safeguards Thoroughly read and understan...

Page 20: ...tern to sea or shut engines off if the seas are too high TO DECK VENTS BLOWER BILGE BLOWER ROUTING AFT WARNING EXPLOSION HAZARD Operation of the blower system is not a guarantee that explosive fumes h...

Page 21: ...he routine maintenance program after the initial 30 hours of oper ation then every 60 hours and whenever an unusual noise or vibration is noticed To insure proper alignment after a haulout or dry stor...

Page 22: ...nt condition exists see caution on bottom of the previous page 7 Reinstall the flange bolts nuts and lock washers if provided and torque to the specifications listed in the table to the right 8 Rechec...

Page 23: ...bserve the following Once the best bow cruising trim is reached use the port or starboard trim switches one at a time to correct unequal lateral loading Trim tab adjustment should be performed by seve...

Page 24: ...cartridge into the housing while twisting clockwise d To ensure proper reinstallation of the power cartridge attempt to twist the fins counterclockwise without lifting the tab The cartridge should sta...

Page 25: ...or expan sion due to temperature variations Then if you are forced to add to the tank with a poten tially poor quality supply the portion of poor quality fuel will be minimized Fuel Fills and Vents Fu...

Page 26: ...tem Diagrams ENVIRONMENTAL HAZARD NEVER transfer fuel into a full or nearly full fuel tank Fuel transferred into a full tank may spill overboard through the tank venting system CAUTION FIRE EXPLOSION...

Page 27: ...nk is located in the aft berth under the inboard mattress The water level monitor located on the AC panel displays the amount of water avail able in the water tank Water Heater Your yacht is equipped...

Page 28: ...lves seacocks and should be checked every time you use your yacht for leaks and or debris If debris is found clean the seawater strainer as follows WARNING SCALDING HAZARD Water heated by the water he...

Page 29: ...er into the bowl the probable cause is debris in the pump diaphragm To remedy this shut off the seacock and dismantle the pump The pump is generally held together with six screws the design is simple...

Page 30: ...mit pumped directly overboard The holding tank is plumbed to a waste fitting on the deck for dockside pump out and to a macerator pump for pumping waste overboard where regulations permit The macerato...

Page 31: ...onditioning and heating system make sure the breakers on the AC main distribution panel are activated and verify the system s seawater pickup seacock is open The seacock must remain open any time the...

Page 32: ...Routing Air Conditioning Heating System Duct Routing SEACOCK STRAINER SEAWATER AFT AIR CONDITIONING UNIT FORWARD AIR CONDITIONING UNIT WATER PUMP AFT AFT AIR CONDITIONING DRAIN THRU HULL FORWARD AIR...

Page 33: ...OR BILGE PUMP WATER PUMP DC FUEL TANK BLOWER SHOWER SUMP PUMP AFT PANEL HEAD VACUFLUSH OPTION PUMP OPTION GENERATOR SHORE POWER INLETS OUTLETS AFT AIR CONDITIONING OUTLET OUTLETS HEAD GFI OPTIONAL ICE...

Page 34: ...LIGHT RADAR CABLE OPTION G P S CABLE OPTION ANTENNA SPLITTER AND COAX OPTION EXTENTION HARNESS ANTENNA COAXIAL COIL ANTENNA COAXIAL OPTION HORN EXTENTION HARNESS ENGINE SEACOCKS FUEL SHUT OFF VALVE FU...

Page 35: ...ARD ENGINE PORT ENGINE BATTERY SWITCH ENGINE PORT STARTER BATTERY ISOLATER STARBOARD ENGINE SWITCH PORT ENGINE SWITCH HELM BREAKER PANEL DC CABINET BUSS BAR GENERATOR OPTION ALTERNATOR PORT ENGINE STA...

Page 36: ...ARBOARD FUEL FILL STARBOARD FUEL TANK TELEPHONE OPTION DASH PLUG BATTERY CHARGER AFT BERTH UNDERSIDE VIEW OF AFT DECK LIGHTS AFT COURTESY LIGHTS A L SPEAKER SPEAKER READER LIGHTS NAVIGATION LIGHTS LIG...

Page 37: ...Pole Single Throw SPST Speaker Horn Alarm Switch Double Pole Single Throw DPST Autofloat Switch Lighted Switch Single Pole Single Throw SPST Color Code Description Color Code Description Color Code De...

Page 38: ...32 Appendix B Wiring Schematics 37OO SCR Sport Yacht Owner s Manual Supplement Diesel Engine Harness...

Page 39: ...Appendix B Wiring Schematics 33 37OO SCR Sport Yacht Owner s Manual Supplement Diesel Dash Harness...

Page 40: ...34 Appendix B Wiring Schematics 37OO SCR Sport Yacht Owner s Manual Supplement Gas Engine Harness...

Page 41: ...Appendix B Wiring Schematics 35 37OO SCR Sport Yacht Owner s Manual Supplement Gas Dash Harness...

Page 42: ...36 Appendix B Wiring Schematics 37OO SCR Sport Yacht Owner s Manual Supplement Deck Harness...

Page 43: ...Appendix B Wiring Schematics 37 37OO SCR Sport Yacht Owner s Manual Supplement Hull Harness Radio Switch Panel Harness...

Page 44: ...38 Appendix B Wiring Schematics 37OO SCR Sport Yacht Owner s Manual Supplement Small Switch Panel Head Harness Battery Charging System...

Page 45: ...Appendix B Wiring Schematics 39 37OO SCR Sport Yacht Owner s Manual Supplement 120v AC DC Panel...

Page 46: ...40 Appendix B Wiring Schematics 37OO SCR Sport Yacht Owner s Manual Supplement 240v AC DC Panel Option...

Page 47: ...ting Option WINDLASS MOTOR 1 2 GROUND F2 B F1 RELAY BOX 4 GA 4 GA 16 BLACK F2 DOWN UP FI 16 RED 5 AMP 16 RED DASH SWITCH BATTERY SWITCH ON OFF SWITCH BREAKER A UPPER CONTROL CONTROL DOCKSIDE CABLE INL...

Page 48: ...r parts subject to those warranties shall be the assertion of Owner s rights against those manufacturers or distributors Maxum shall have no liability or responsibility for any damage or expense and n...

Page 49: ...Owner s Notes...

Page 50: ...Owner s Notes...

Page 51: ......

Page 52: ...Part Number 1706480 Rev A Maxum Marine P O Box 6050 Arlington WA 98223 6050 360 435 6534...

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