4.2.4 HEAVY DUTY FUSES
Behind the hatches of the bay in the aft cabin or the open space in the aft of
the craft there is a fuse panel containing fuses for appliances and electronic
circuits which require large currents, such as windlasses. The bow thruster’s
high-current fuse is located on the main switch panel. The functioning of fuses
can be checked from the holes in the fuse’s cover. If the metal strip visible in the
hole is unbroken, the fuse is operational.
If the metal strip is damaged, meaning that an overload has occurred, contact a
qualified nautical electrician. Opening the cover is not recommended, as there
is a danger of electric shock and serious injury. The panel contains fuses for the
appliances listed below. If it is necessary to open the cover, make sure that all
the current cables from the batteries are disconnected.
4.2.5 BATTERIES
Your boat is equipped with five batteries, of which the START STB and PORT
batteries supply current to the engines and power steering, two Service
batteries for other appliances and equipment on the craft and one battery to
the bow thruster. The battery system has been designed and built so that the
craft’s engine starts even if its Start batteries are dead, because then the Service
battery supplies the current. However, this function does not work the other
way around.
The batteries are located under the aft cabin’s berth. The location of the
batteries is presented in the section Electrical System. When you leave your
boat, switch off the current from the main switch but do not forget to check that
all direct supply switches are on.
Remove the battery from the craft for winter storage. When removing the
battery, detach the negative pole first.
CHARGING THE BATTERIES
Make sure that the battery compartment is always well ventilated when charging
batteries. Only charge batteries in the boat with boats´s own chargers. In other
cases, remove batteries from the boat. Remember that the batteries discharge
an explosive oxy-hydrogen gas at a voltage of 14.4 volts. The voltage of a normal
battery in unloaded status is 12.3-12.7 V. During charging, the voltage increases
and the charging regulator stops the charging process automatically at a preset
level. The voltage measurement should be taken at the battery terminals, not
the alternator, to achieve the correct result.
CHARGING STATUS
The best method for determining charging status is to measure the specific
gravity of the battery acid. This is done using a hydrometer (acid measurer).
Normal specific gravity for a fully charged battery at 20 °C is 1.26-1.28g/cm³.
Note that the specific gravity varies with tempera- ture. Batteries from different
manufacturers can have a different spe- cific gravity. Ask your dealer for the
correct information. If the specific gravity varies from cell to cell, then the
battery is not in good condition, and should be replaced. For winter storage,
the batteries can be left on board only if they are fully charged. A partially
discharged battery can freeze and crack. Always disconnect the cable terminals
from the bat- tery to avoid oxidation.
WINTER STORAGE
For winter storage, the batteries can be left on board only if they are fully
charged. A partially discharged battery can freeze and crack. Always disconnect
the cable terminals from the bat- tery to avoid oxidation. When removing
batteries, disconnect the negative pole first and make sure that there are no
flammable or explosive materials or liquids nearby. When putting the batteries
back in place, connect them in reverse order (positive pole first).
Opening the cover of fuses is not recommended, as there is a danger
of electric shock and serious injury.
DANGER!
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