Hunter 50CC - Page 112

H
unter 50cc • AC Electric S
y
stems
8
.
8
it run warm. Continuous load should be restricted to 70
%
of
m
a
xim
u
m l
oad
.
Stoppin
g
g
enerator
:
1
S
witch o
ff
all electrical devices
(
consumers
)
. I
f
th
e
g
eneratin
g
set has been runnin
g
under
f
ull load
f
or a
lon
g
er period, do not shut it down abruptl
y
. Reduce the
e
lectrical load to about 30
%
o
f
the rated load and let it run
f
or approx. 5 minutes
.
2 Press the
S
T
O
P button
.
3
C
lose the inlet sea water cock
.
4
S
witch to an other A
C
power source, i
f
available. I
f
a
M
ass
Sy
stemswitc
h
is installed, this is done automati-
c
all
y
.
8
.3.6 The Air Conditionin
g
S
y
stem
(
Option
)
Th
ere are t
h
ree a
i
r con
di
t
i
on
i
n
g
un
i
ts
i
nsta
ll
e
d
on
y
our
boat. Ensure that
y
ou read the instructions on the air
c
onditioner’s owner’s manual
f
or more detail operatin
g
inf
o
rm
a
ti
o
n.
F
ig. 8.6 Air contioner breakers on AC control panel. the
ai
r cond
i
t
i
oner control panel on ma
i
n cab
i
n nav
i
gat
i
on
s
tati
o
n
1. Ensure
y
ou have 240 volt
(
230 overseas
)
power to the
MDP.
2.
C
heck to make sure that the seawater intakes, and
dischar
g
e for the A/C s
y
stem coolin
g
is open and that the
s
tr
a
in
e
r i
s
c
l
ea
n
a
n
d
deb
ri
s
f
r
ee.
3
. Ener
g
ize the Air Conditionin
g
s
y
stem at the MDP
p
ane
l
.
4.
C
heck to make sure that the dischar
g
e is
f
lowin
g
at the
Air Conditionin
g
coolin
g
water dischar
g
e.
General O
p
eration
:
The A
/C
unit reverse c
y
cle air conditioner has both a
heatin
g
and coolin
g
mode of operation. It uses R-22
o
r R407c re
f
ri
g
erant in a conventional vapor compres-
sion c
y
cle to trans
f
er heat
f
rom the air in the boat to the
water.
I
n t
h
e coo
li
n
g
mo
d
e, a
bl
ower
bl
ows t
h
e ca
bi
n a
i
r
throu
g
h the indoor or evaporator coil where it is cooled
and dehumidi
f
ied. Liquid re
f
ri
g
erant passin
g
throu
g
h the
e
vaporator is boiled into a
g
as b
y
heat removed from the
air. The warmed re
f
ri
g
erant
g
as enters the compressor
where its temperature and pressure are increased. The
hot refri
g
erant
g
as travels to the water coil or condenser
where it is cooled b
y
the water and condenses to a liquid
Liquid refri
g
erant is metered back into the evaporator coil
to repeat the process.
I
n the heatin
g
mod
e
,
the process is reversed. A spe-
c
ial reversin
g
valve reverses the flow of the refri
g
erant
throu
g
hout the s
y
stem exchan
g
in
g
the roles o
f
the con-
denser and evaporator. The re
f
ri
g
erant
f
lows throu
g
h the
water or evaporator coil, picks up heat from the water,
and becomes a vapor. The vapor then enters the com-
pressor w
h
ere
i
t
i
s compresse
d
to a
high
er temperature.
It is then pumped to the indoor coil where the air movin
g
across t
h
e co
il
pi
c
k
s
up
t
h
e
h
eat an
d
t
h
e warm a
i
r
i
s
blown into the room. The compressed re
f
ri
g
erant vapor
c
ondenses to a liquid as it
g
ives up heat. Finall
y
, liquid
refri
g
erant flows into the capillar
y
tubes into the indoor
c
oil where the c
y
cle is repeated.
Th
e reverse c
y
c
l
e a
i
r con
di
t
i
oner
i
s contro
ll
e
d
by
a con-
troller mounted on the main cabin navi
g
ation station,
port side a
f
t en
g
ine bulkhead in a
f
t cabin and above port
han
g
in
g
locker in the forward cabin
.
P
l
ease
r
efe
r
s
t
o
a
ir
co
n
d
iti
o
n
e
r’
s
o
wn
e
r’
s
m
a
n
ua
l
fo
r
detail information re
g
ardin
g
operatin
g
of the A/C unit and
m
a
int
e
n
a
n
ce
in
fo
rm
a
ti
o
n.