For example: For 2.5 hours of sun in winter, the maximum light/period ratio available with a
led power of 100% is 20% according to the following table.
Light/period ratio=(sum of flash time)/(total period)
7. Maintenance
A plan of maintenance is necessary to ensure that the equipment and the systems of Aids to
Navigation continue to operate at the required levels in order to ensure to the navigators a safe
navigation on the world's waterways. A system of maintenance to ensure that Aids to Navigation
equipment are operating at the desired level and to reduce the total cost of the owner must be
implemented, for that reason the following maintenance guidelines have been developed
following the IALA Guideline No. 1077 on Maintenance of Aids to Navigation.
The Compact self-powered LED lanterns have the considerable advantage of requiring very low
maintenance during its lifetime. When using LED flashing lights, the periods between
maintenance visits are set by the need to visit the signal to remove bird droppings and salt
accumulation.
Besides, as compact self-powered lanterns, all the elements that form them (battery, flasher,
LED ...) are perfectly grouped and protected in the same module hermetically sealed and
protected from external conditions.
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