5
Description of Operation
The AutoShore 50-120-240 is designed to monitor incoming shore voltage and
boost the voltage if appropriate. Safety cutouts are also provided to protect the
boat’s electrical system from excessively high shore voltage and, equally as
destructive, low dock voltage (brown outs). The output transformer also provides
isolation between the dock shore power and the boats electrical system. The
unit is designed with a selector switch so that power can still be provided to the
boat when only 120 volts is available.
1. For the unit to go into boost mode, the input (shore) voltage must be equal
to or lower than 219 volts for about 0.5 second. The indicator lamp
(voltage boosted) on the front of the control panel will light at this time.
2. For the unit to go into direct mode, the input (shore) voltage must be
greater than or equal to 223 volts for about 0.5 second. The unit will lock
into direct mode for approximately 30 minutes after switching from boost
mode into direct mode.
3. For the unit to trip due to over-voltage, the input (shore) voltage must be
higher than or equal to 264 volts for about 0.5 second. The input (shore)
voltage has to drop to at least 262 volts before the unit can be reset by
pushing the lit reset button on the front of the panel.
4. For the unit to trip due to low voltage, input (shore) voltage must be lower
than 178 volts for 3 seconds. The input (shore) voltage has to raise to at
least 180 volts before the unit can be reset by pushing the lit reset button
on the front of the control panel. The unit will also trip due to “Transformer
high temperature”.
5. Removal of “O.T. Jumper” will disable transformer high temperature
shutdown. CAUTION: With O.T. Jumper removed, transformer over
temperature light will come on, but system will not shutdown.
6. All the automatic features can be bypassed by placing the selector switch
in the “Manual” position. No over/under voltage and transformer high
temp. protection will occur and dock voltage will not be boosted with low
input (shore) voltage.
7. When 120 volt input (shore) voltage is only available, the unit can still
provide power to the boat by putting the selector switch in the “120 volt”
position. As in manual mode, no over/under voltage and transformer high
temp. protection will occur and the voltage will not be boosted with low
input (shore) voltage. The meter on the front of the control panel will still
light and indicate the input (shore) voltage.
8. To utilize 120 volt dock power, use Marineco adapter # MAR.117A
Summary of Contents for 50-120-240
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