Pro
‐
OX
7000
‐
SXT
Installation
&
Startup
Guide
Page
4
www.cleanwaterstore.com
Rev
030514
6.
The
drain
line
tubing
(not
supplied)
is
connected
to
a
drain
from
the
drain
outlet
using
flexible
½”
ID
tubing.
Note
that
the
drain
can
run
up
above
the
Fleck
7000
‐
SXT
control
and
into
a
drain,
it
does
not
have
to
drain
down,
as
the
filter
backwashes
under
line
pressure
from
your
well
pump.
Most
plumbing
codes
require
an
air
‐
gap
connection,
so
that
if
your
sewer
or
septic
tank
backs
up,
it
cannot
cross
connect
with
the
drain
tubing.
How
Your
Pro
‐
OX
Filter
System
Works
See
Fig
1.
In
your
Pro
‐
OX
filter,
the
water
enters
the
top
of
the
tank
(red
arrows)
and
flows
down
through
the
media
and
up
the
distributor
tube
(blue
arrows).
Iron
and
manganese
in
the
water
turns
to
an
oxidized
particle
upon
contact
with
the
media
and
is
trapped
in
the
media.
During
backwash,
the
water
flow
is
reversed
and
water
flows
down
the
distributor
tube
and
up
through
the
media,
lifting
and
expanding
the
Pro
‐
OX
(PRO
‐
OX
,
also
called
‘Filox’
)
media,
and
removing
all
the
iron
and
rust
trapped
in
the
filter.
During
the
backwash
the
Pro
‐
OX
filter
media
is
cleaned
by
the
action
of
the
water
flowing
up
through
it.
Fig
1
‐
Pro
‐
OX
Filter
Tank
Diagram
