User manual
18
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.