ETAP 28s - Page 46

T
m-P
313
Thrcugh-hull
ouflets
313,1
!-ocation
of tfrrcugh.hul!
oudets
For
the
position
of
the through-hull
outlets,
please
refer
to
drawing BC
018
085.
l1l2
Useoiftrrcughtrul!
oudets
Some
of the
through-hull
outlets
are fitted
with
stopcocks,
primarily
those
below
the waterline.
Most
of the
stopcocks
in
the installations
on
board
are of
the
bail-valveiype.
ln
this type
of stopcock,
the
position
of
the control
lever
indicates
whether
the stopcock
is
open
or closed.
Along
the
line
of the
pipe:
open;
crosswise
to the
pipe:
closed.
313,3
Maintenance.
prcblems
and
preparinq
forwinter
Maintenance:
.
please
also
refer
to the
M for
the log
and
depth
gauge
;
o
the
log
transducer
must
be regularly
raised,
so
that
the
paddle
wheel
can
be inspected
and in
order
to
grease
the O-rings
with
a litfle
acid-free
vaseline
;
'
mahY
systems
on
board
contain
stopcocks.
lt is
strongly
advisable
to open
and
close
all the
stopcocks
in
all the
systems
on board
a few
times now
and again
in
order
to keep
the
stopcocks
movable.
Problems:
'
please
refer
to the
manuals for
the
measuring
instruments
for
details
of faults
that may
arise
with
the etectronics (Ml).
Preparing
for
winter:
'
through-hull
outlets
only
have
to be
prepared
for
winter
when
the
yacht
is spending
winter in
the water.
If
the
yacht
is being
kept
on
shore
over
the winter,
it
is
best to leave
the-stopcocks
open
;
o
prepare
ball valves
for
winter
by
ensuring
that
there
is antifreeze
in
the ball itself
;
'
do
this
by
putting
antifreeze
in
the- hose
to the
stopcock
and by
quickly
opening
and
closing
the
stopcock,
thus
ensuring
that
antifreeze
gets
into
the stopcock
but no
1or
as iitile
as
posiiote;
antifreeze
ends
up in
the.sur"face
water.
Preparing
for
summer:
o
connect
all
the
hoses
and
check
that the
stopcocks
are functioning
and not leaking.
Othe
r:
o
follow
the
instructions
in
the manuals
for
equipment
connected
to the
stopcocks
and
through-
hulloutlets.
ETAP
28S
44
I 7a