Hunter H33 - Pumps Overview; Fresh Water Pump Operation; A;C Cooling Pump Information; Toilet Water Supply

Hu
nt
e
r
33
• Water S
y
stems
9
.
3
R
efill with potable water and pur
g
e the plumbin
g
of all
san
i
t
i
z
i
n
g
so
l
ut
i
on.
9
.2 Pum
p
s
O
n board
y
our boat there are both
f
resh water and raw
water pumps that control the flow of water to the related
c
omponents.
Th
ese are e
l
ectr
i
ca
lly
powere
d
pumps .
S
ome o
f
the
f
eatures o
f
these pumps are
:
•Smooth Flo
w
•
S
el
f
-Primin
g
up to 10
f
eet
(
3m
)
• Dr
y
runnin
g
capabilit
y
• Soft noise absorbin
g
mounts
•
S
nap-
f
it port
f
ittin
g
s
• Built-in b
y
pass — less pulsation
• R
educes
n
eed
f
o
r
accu
m
u
l
a
t
o
r t
a
n
k
•
C
orrosion resistant materials
Remember to read your OEM manuals for complete informa-
tion, as well as safety warnings, or notices.
9.2.1 Fresh Water Pum
p
The fresh 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 o
f
the MDP. When the breaker is switched to
O
N,
t
h
e pumps w
ill
run unt
il
t
h
e
h
ot an
d
co
ld
water s
y
stems
are pressurized. An automatic pressure switch shuts the
pumps o
ff
until the pressure drops to a preset level
(f
or
e
xample, a pressure drop caused b
y
openin
g
a faucet
)
.
The pumps will then run a
g
ain until the s
y
stem is pressur-
ized and turn itsel
f
o
ff
. The pumps have a built-in check
valve to prevent backflow throu
g
h the pumps
.
Th
e
fr
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
.2.2 A/C Coolin
g
Pump
Y
our
b
oat ma
y
b
e equ
i
ppe
d
w
i
t
h
t
h
e opt
i
ona
l
a
i
r con
di
-
tioner reverse c
y
cle unit. This t
y
pe o
f
unit can heat or
c
ool
y
our boat.
The Air
C
onditionin
g
s
y
stem is made up o
f
a pickup valve
(
or thru hull
)
(S
ee Underwater
G
ear
f
or 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 find the A/C coolin
g
pumps’ location refer to the
arran
g
ement illustration at the end o
f
this chapter or the
M
echanical Arran
g
ement at the end o
f
the Boatin
g
S
a
f
et
y
C
ha
p
ter.
The A
/C
coolin
g
pump receives sea water
f
rom the pick-
up strainer and pumps it throu
g
h the A/C compressor to
c
ool the compressor.
S
ee the AC Electric Section for an explanation of the
e
lectrical controls o
f
this s
y
stem.
9
.2.2.1 To o
p
erate the air conditioner
:
R
e
f
er to
C
hapter 8 A
C
Electric
f
or air conditioner operat-
i
n
g
.
9
.2.3 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
(
Electric toilet option onl
y)
.
S
tandard toilet use raw water.
M
ore in
f
ormation concernin
g
the operation and main-
tenance o
f
this s
y
stem can be
f
ound in the Waste
and Sanitation chapter, Chapter 10 of
y
our
O
perator’s
Ma
n
ua
l
.
Fig 9.3