mcmurdo G5, User Manual

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Category 1 enclosure installation outline
Marking Hydrostatic Release Unit (HRU) expiry (Category 1 enclosure)
The HRU has a two year in-service life starting from the date of installation of the EPIRB.
The installer must mark off the month date of two years into the future on the body of the
HRU and put the same month date onto the label on the outside of the enclosure.
Mark the HRU by cutting out the corresponding month and year label date.
The outside of the enclosure should be marked using the alpha-numeric stickers provided
and then covered with the clear adhesive label provided. Use date format, month and
year, for example: JUN 2006.