•
Dump
the black water holding
tank
first. Grasp
the
handle
of
the
black
water
knife valve (the large
one)
firmly
and slide
the
valve open
with
a quick,
steady pull.
•
Allow
enough time
for
the
tank
to
drain completely.
Rinse and flush
the
tank
through
the
toilet.
When
the
tank
is empty,
push
the
handle in
to
close
the
valve. Reset
the
locking device. Even
if
you are
parked
at
a site
with
a semi-permanent
sewer
hookup, keep
the
black
water
knife valve closed
to
allow
the
waste
to
build up.
The
outlet
will
pro-
bably
clog
if
you leave
the
knlfeilalve
open con-
tinually. Run enough
water
into
the
tank
to
cover
the
bottom.
This
will
aid
the
break up of solid
wastes.
•
To
dump
the
grey
water
tank, repeat
the
steps
above
for
the small knife
valve.
This
tank is dumped
last
to
aid
in'
flushing
the
outlets and hose.
The
grey
water
knife valve
may
be
lett
open in a semi-
permanent
hookUp.
• Remove
the
sewer hose and replace
the
cap.
• Rinse
out
the
sewer hose
with
fresh water and
remove
the
sewer hose from
the
dump
station.
• Replace sewer or
dump
station covers.
• Remove
the
sewer hose, cap the outlet, and store
the
hose.
PLEASE.
..
PRACTICE GOOD HOUSEKEEPING WHEN
DRAINING WASTES
AT
A CAMPSITE
OR
DISPOSAL
STATION.
LEAVE THE SITE
IN
GOOD ORDER. ABOVE
ALL, DO NOT POLLUTE.
Holding
Tank Care
and
Maintenance
Since
holding tanks
don't
rely on any sophisticated
mechanical
devices for their operation,
they
are virtual-
ly
trouble-free. The
most
common
problem
is
also an
unpleasant
one-clogging.
You
can minimize the chances
of
clogging
by
keeping
the
following considerations in
mind:
• Keep
the
black
water
tank knife valve closed. Fill
tank
to at least 3;' full before dumping.
Be
sure
to
cover the tank bottom
with
water after dumping.
• Use
only
toilet tissue formulated
for
use in septic
tank
or
RV
sanitation systems.
Keep
both
knife valves closed and locked, and the
drain
cap
tightly in place
when
using the system
on
the
road.
25
Grey Holding
Tank
Dumping ,
Black Water
Tank
Dumping
• Use only cleaners
that
are
approved for use in sep-
tic tank or
RV
sanitation systems.
• Use a special holding tank deodorant chemical ap-
proved for septic tank systems in
the
black
water
holding tank. These chemicals aid the
breakdown
or solid wastes, and make
the
system
much
more
pleasant to use.
•
Do
not
put facial tissue, paper, ethylene glycol·
based or other automotive antifreeze, sanitary
napkins, or household toilet cleaners in the holding
tanks.
Do
not
put anything solid in either tank
that
could
scratch
or
puncture
the
tank.
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