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iv

The Hazards of Carbon Monoxide

Most people know not to run a car in the garage.
Many people know about the threat of carbon mon-
oxide poisoning in the house. But few people are
aware that this invisible killer is even more insidious
aboard a boat.

Engine-driven generators can produce harmful lev-
els of carbon monoxide that can injure or kill you.
The nature of boating is such that you can be
harmed by this poisonous gas despite good genera-
tor set maintenance and proper ventilation.

WHAT IS CARBON MONOXIDE

POISONING?

Carbon Monoxide (CO) is an odorless and colorless
gas. You cannot see it or smell it. Red blood cells,
however, have a greater affinity for CO than for Oxy-
gen. Therefore, exposure even to low levels of CO
for a prolonged period can lead to asphyxiation (lack
of oxygen) resulting in death. Mild effects of CO poi-
soning include eye irritation, dizziness, headaches,
fatigue and the inability to think clearly. More ex-
treme symptoms include vomiting, seizures and col-
lapse.

WHAT ARE THE SPECIAL RISKS OF CO

ON BOATS?

Depending on air temperature and wind, CO can ac-
cumulate between hulls, under an overhanging
deck or rear swimming platform and in and around
the boat. A swimmer can be exposed to lethal levels
of CO when the genset is running. Passengers on
deck and in the living quarters can also be exposed,
especially when the boat is docked, beached or tied
to a neighboring boat.

The risk of exposure to CO can be multiplied greatly
by the “station wagon” effect, obstructions that block
exhaust dissipation, and infiltration from neighbor-
ing boats. To protect against all three situations,

Onan recommends that reliable CO detector-
alarms be installed on your boat.

The Station Wagon Effect −

 A boat pushes

aside the air through which it is moving, causing
a zone of low pressure in the back of the boat
and cabins into which exhaust gases can be
drawn (see figure). A breeze across an an-
chored boat can have the same effect. Opening
doors and windows so that air can flow through
the boat can reduce the effect.

Obstructions − 

Anchoring near a large object

such as a boat house or sea wall or in a con-
fined space such as a canyon can cause ex-
haust gases to accumulate in and around the
boat despite good generator set maintenance
and proper ventilation. Don’t run the generator
set when anchored in such places.

Exhaust from Neighboring Boats −

 When

boats are anchored in close quarters exhaust
from neighboring boats can accumulate in and
around yours.

ONLY YOU CAN PROTECT YOURSELF

FROM CO POISONING!

Watch constantly for swimmers when the gen-
erator set is running.

Make sure exhaust cannot get under the deck,
between hulls or enter the living quarters
through a window, vent or door.

Make sure all CO detectors are working.

Pay attention to the signs of CO poisoning.

Check the exhaust system for corrosion, ob-
struction and leaks each time you start the gen-
erator set and every eight hours if you run it
continuously.

POST THESE SUGGESTIONS IN POTENTIAL HAZARD AREAS OF THE BOAT

Redistribution or publication of this document, 

by any means, is strictly prohibited.

Содержание MGKBC Series

Страница 1: ...Caution This document contains mixed page sizes 8 5 x 11 or 11 x 17 which may affect printing Please adjust your printer settings according to the size of each page you wish to print...

Страница 2: ...Installation Manual MGKBC MGKBD Printed in U S A 02 04 981 0635B Redistribution or publication of this document by any means is strictly prohibited...

Страница 3: ...aust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Redistribution or publication of this document by any means is stric...

Страница 4: ...tion Protection 4 FUEL SUPPLY 5 ENGINE COOLING 6 Cooling System Overview 6 System Components 7 Raw Water Pickup Test 8 ENGINE EXHAUST 9 System Components 9 Exhaust Water Separator Backflow Test 10 ELE...

Страница 5: ...genset drip pan and compartment clean Oily rags can catch fire Gear stowed in the compartment can cause the genset to over heat Make sure all fasteners are secure and proper ly torqued Do not work on...

Страница 6: ...e present or in areas sharing ventilation with fuel tanks en gines and other such equipment Keep flames sparks pilot lights electrical switches arc pro ducing equipment and all other sources of igni t...

Страница 7: ...plied greatly by the station wagon effect obstructions that block exhaust dissipation and infiltration from neighbor ing boats To protect against all three situations Onan recommends that reliable CO...

Страница 8: ...13 liter min 3 0 gpm 16 liter min 3 5 gpm 13 liter min Raw Water Flow 60 Hz 50 Hz 5 0 gpm 19 liter min 4 0 gpm 15 liter min 5 0 gpm 19 liter min Maximum Raw Water Pump Lift 4 feet 1 2 m with 5 8 inch...

Страница 9: ...vi This page is intended to be blank Redistribution or publication of this document by any means is strictly prohibited...

Страница 10: ...G regulations is mandatory for boats in U S waters The American Boat and Yacht Council ABYC and the National Fire Protection Associa tion NFPA are typical of agencies that publish safety standards for...

Страница 11: ...ex changer and replace the fuel pump At least 1 inch 25 mm of clearance is required in front of the outlet air grille on the right side There must be access for Starting and stopping the genset Resett...

Страница 12: ...ct that WARNING Gasoline vapors can explode Be fore starting the genset operate the exhaust blower for 4 minutes and check the genset compartment and bilge for gasoline vapors Ventilation Ducts Ventil...

Страница 13: ...heads for wiring conduit pipe and hose must be sealed to prevent exhaust gases and gasoline vapors from entering the rest of the boat Wiring conduit must be sealed inside as well as outside Plumbing F...

Страница 14: ...in the fuel tank for the genset The inside diameter should be 1 4 inch 6 35 mm It must not be greater than 3 8 inch 9 mm In a common fuel supply tank the genset pickup tube should be shorter than tho...

Страница 15: ...es The raw water is expelled from the boat along with the exhaust gases The V belt drives the coolant and the raw water pumps RAW WATER IN EXHAUST RAW WATER OUT THERMOSTAT HOUSING BLOCK DRAIN CAP RAW...

Страница 16: ...engine A rear facing scoop can develop enough suction to impede flow Siphon Break Conduct the RAW WATER PICKUP TEST to deter mine whether a siphon break is required to prevent the engine from being f...

Страница 17: ...rk the level on the genset enclosure 3 Operate the boat through its speed range for ward and reverse While the boat is operating have someone monitor the water level in the hose and mark the highest l...

Страница 18: ...d stainless steel el bows are available from Onan Horizontal runs of hose must slope down at least 1 2 inch per foot 42 mm meter and be supported such that there are no sags The entire run of hose mus...

Страница 19: ...linders become flooded The sea trials must verify that there is no backflow through either the exhaust hull fitting or the wa ter separator drain hose fitting Other Engine Exhaust Systems Do not T int...

Страница 20: ...be able to look for water discharge from the hull to tell whether engine exhaust cooling water is flowing However the genset will shutdown if water stops flowing Code No 7 See Troubleshooting in the...

Страница 21: ...MIN MUST BE ABOVE WATERLINE SIPHON BREAK NOT REQUIRED WHEN WATER EXHAUST MIXER IS AT LEAST 6 INCHES 152 MM ABOVE LOAD WATER LINE 12 INCH 305 MM MIN Note All exhaust hose and pipe must slope without s...

Страница 22: ...HAN 6 INCHES 152 MM ABOVE LOAD WATER LINE Notes 1 All exhaust hose and pipe must slope without sagging at least 1 2 inch per foot 42 mm meter 2 The operator will not be able to look for water discharg...

Страница 23: ...H 305 MM MIN 12 INCH 305 MM MIN MUST BE ABOVE WATERLINE SIPHON BREAK REQUIRED WHEN WATER EXHAUST MIXER IS BELOW OR LESS THAN 6 INCHES 152 MM ABOVE LOAD WATER LINE Note All exhaust hose and pipe must s...

Страница 24: ...ge fre quency or to readjust voltage Grounding The genset power supply wiring and all connected electrical equipment must be bonded to the com mon grounding system of the boat in accordance with appli...

Страница 25: ...tal Displays must have eight 8 conductors Harnesses for remote switches and meters only must have at least six 6 conductors connector pins 7 and 8 are not used See Figure 6 Note 1 All feed through hol...

Страница 26: ...se vere personal injury The battery compartment must be ventilated and isolated from spark pro ducing equipment Battery Cables Size battery cables according to Table 2 Total cable length is the sum of...

Страница 27: ...ctory Jumpers The genset leaves the factory with SWB jumpered to the other two connectors ESTOP and CO Leave the jumpers connected when no external shutdown devices are to be connected otherwise the g...

Страница 28: ...e genset controller into voltage adjust mode The amber status light will begin blinking about once every sec ond to indicate the change to voltage adjust mode The green status light will remain on 3 T...

Страница 29: ...ion and filling The entire exhaust system is accessible for in spection and replacement Fuel tanks piping hoses and filters comply with regulations and are accessible for inspec tion and replacement T...

Страница 30: ...21 630 2528 FIGURE 8 WIRING DIAGRAM...

Страница 31: ...22 630 252 FIGURE 9 GENERATOR CONNECTION DIAGRAM...

Страница 32: ...23 500 3363 FIGURE 10 OUTLINE DRAWING...

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