Hunter H45DS - Pumps

Hunter 4
5
DS
• Water S
y
stems
9
.
4
9
.3 Pum
p
s
O
n board
y
our boat there are both fresh water and raw
water
p
um
p
s that control the flow of water to the related
c
omponents. These are electricall
y
powered pumps .
S
ome of the features of these pumps are
:
•
S
mooth Flo
w
• Self-Primin
g
up to 10 feet
(
3m
)
•
D
r
y
runn
i
n
g
capa
bili
t
y
•
S
o
f
t noise absorbin
g
mounts
• Snap-fit port fittin
g
s
•
B
u
il
t-
i
n
by
pass —
l
ess pu
l
sat
i
on
• R
educes
n
eed
fo
r
accu
m
u
l
a
t
o
r t
a
n
k
•
Co
rr
os
i
o
n r
es
i
s
t
a
nt m
a
t
e
ri
a
l
s
Remember to read your OEM manuals for complete informa-
tion, as well as safety warnings, or notices.
9.3.1 Fresh Water Pum
p
The
f
resh water pump supplies water to the s
y
stem
under pressure when the potable water suppl
y
is not
co
nn
ec
t
ed
.
The FRE
S
H WATER P
U
MP breaker switch is on the D
C
side of the MDP. When the breaker is switched to
O
N,
the pumps will run until the hot and cold water s
y
stems
are pressurized. An automatic pressure switch shuts the
pumps off until the pressure drops to a preset level
(
for
e
xample, a pressure drop caused b
y
openin
g
a
f
aucet
)
.
The pumps will then run a
g
ain until the s
y
stem is pressur-
ized and turn itself off. The
p
um
p
s have a build-in check
valve to prevent back
f
low throu
g
h the pumps
.
Th
e
f
r
es
h w
a
t
e
r w
as
h
do
wn
co
nn
ec
ti
o
n i
s
l
oca
t
ed
o
n th
e
tr
a
n
so
m.
Important: Operate the fresh water pumps only when there
is water in the tank. Running the pumps dry will damage the
diaphragm.
Note: If the pumps run from time to time even though no water
is being used, a leak in a water line is a likely cause. Check all
lines for leaks and repair immediately.
9
.3.2 A/C Coolin
g
Pump
Your boat ma
y
be equipped with the optional air condi-
tioner reverse c
y
cle unit. This t
y
pe o
f
unit can heat or
c
oo
l
y
our
b
oat.
The Air
C
onditionin
g
s
y
stem is made up o
f
a pickup valve
(
or thru hull
)
(
See Underwater Gear for its location
)
, a sea
strainer, an A
/C
coolin
g
pump, and the ma
j
or compres-
so
r
s
a
n
d
a
ir h
a
n
d
l
e
r
s.
To
f
ind the A
/C
coolin
g
pumps’ location re
f
er to the
arran
g
ement illustration at the end o
f
this chapter or the
M
echanical Arran
g
ement at the end of the Boatin
g
Safet
y
C
hapter.
The A/C coolin
g
pump receives sea water from the pick-
up strainer and pumps it throu
g
h the A
/C
compressor to
c
ool the compressor.
S
ee the A
C
Electric
S
ection
f
or an explanation o
f
the
e
lectrical controls o
f
this s
y
stem.
9
.3.4.1 To o
p
erate the air conditioner
:
1.
O
pen the air conditioner seacock. The valve is open
wh
e
n it
s
h
a
n
d
l
e
i
s
in lin
e
with th
e
h
ose
. Th
e
seacoc
k i
s
located to the port side o
f
the Lazarette area, a
f
t o
f
the
A/C pump, in the bil
g
e.
2.
C
heck the strainer.
C
lean i
f
necessar
y
to assure a
stead
y
flow of water to the unit.
3
.
S
et the thermostat to the temperature desired. The
th
e
rm
os
t
a
t i
s
l
oca
t
ed
n
e
xt t
o
th
e
MDP
.
Important: Be sure to close air conditioner seacock
when the air conditioner is not in use. Refer to the man-
ufacturer’s owner’s manual furnished with the air con-
ditioner for more information regarding its operation.
9
.3.3 Toilet water suppl
y
The toilet aboard
y
our boat is supplied with flushin
g
water
f
rom the
f
resh water s
y
stem.