NW Explorations Navigator, Руководство по эксплуатации

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NW Explorations
NAVIGATOR OPERATING MANUAL
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Routine Generator Service:
The generator oil is easily checked. Remove the starboard cover on the generator by turning the two knobs on
its upper corners and lift it out of the way. The dipstick and fill cap are easily visible.
It shouldn’t be necessary to add coolant, but if you do need to, use 50-50 antifreeze mix adding it to the coolant
tank accessed from the top of the generator.
Generator Problems:
The generator monitors its own operation, detecting any loss in oil pressure or any overheating. If either occurs,
the generator shuts itself off, and will not keep running when you try to restart it.
If this occurs, you can confirm that the cause was such a fault by looking on the aft starboard side of the
generator where you will see a red “fault” button. If a fault has occurred, the button will be out; it is normally
flush with the panel if there is no fault.
Before repeated starting, shut off sea water supply to avoid water-locking the engine! Then,
remember to turn it back on when the generator starts!
4F2: AC Inverter System
The Inverter Makes AC from DC...
As we said, the Inverter system is used to provide AC to the boat when there is no shore power. It is wonderful,
for example, to use the inverter to make a pot of coffee when the engine is running and you are underway, or to
watch TV in a quiet anchorage, or use a hair dryer for a few minutes in the morning. But for long-period use of
AC by large appliances, the engine or generator must be running or you must have shore power available.
Now the microwave, for example, will draw about 100 amps of DC when using the inverter to run it, so in six
minutes you use one-tenth of an hour at 100 amps, or ten ampere-hours. That’s okay. But what if you want to
cook a roast for 30 minutes? You would use up a lot of energy on that one job alone! That’s too much use for
the inverter, and the propane stove or convection oven should be used.
For a short task, the inverter is great: no starting the generator, no noise, no fuss, the power is there. If the
engines are running, use it all you wish, as long as you don’t try to do two huge jobs at once: The inverter
produces a maximum of 2,500 watts of energy at a time. So the inverter is only wired to the outlets, icemaker
and the engine room lights. It will not run the water heater, battery charger or refrigeration.
Note: Only the breakers in the panel illustration on page 4.10 with an asterisk (*) are powered by
the inverter!
...and also is a Battery Charger, Making DC from AC!
The Inverter can also do the reverse: If there is AC power available from a shore-side source or the generator, it
can recharge the house batteries. The battery charger function receives that power through the “Inverter Battery
Charger” breaker on the AC panel. Since this breaker must be “On” for the batteries to charge using AC power,
and you will want to charge the batteries at every opportunity, we suggest that you leave it “On” for the duration
of your cruise.
As noted below in the “AC Shore Power Connecting” section, be mindful that the Inverter can draw a lot of
current when charging the batteries, especially when first activated upon connection to shore power. Thus, you
need to be careful not to overload a shore power circuit by running other high- draw AC appliances at the same
time. Monitor the AC Ammeter to make sure the load remains below the available current as determined by the
shore power service from the marina, normally 30 amps.