Waste Water System; Dumping Holding Tanks - Winnebago Sunflyer Manual

SECTION 7
PLUMBING SYSTEMS
For your convenience, a water pump switch is
located near the shower knobs. This allows you
to turn the pump on or off from outside the
coach.
The exterior shower also doubles as a water
line drain valve. See drain valve locations on
page 7-8 for further information.

WASTE WATER SYSTEM

(HOLDING TANKS)
The drainage system is self-contained and
uses two separate holding tanks to contain the
waste water until it can be dumped at an appro-
priate waste water disposal site. This means you
can use the toilet, sinks and shower even in areas
where utility hookups are not available.
The main holding tank contains the sewage
from the toilet, and is commonly called the black
water tank. The second holding tank contains the
waste water from the galley sink, bathroom lava-
tory and shower, and is commonly called the
gray water tank.
The holding tanks are dumped through a com-
mon outlet located inside the utility compartment
on the left side of the coach, ahead of the rear
wheels.

DUMPING HOLDING TANKS

1. Remove drain hose from exterior storage
compartment.
2. Remove dust cap from drain and connect
drain hose. Be sure it is firmly attached.
7-6
3. Place the other end of sewer hose into dis-
posal opening.
4. Open the the black water valve with a quick
pull and make sure there are no sags in the
hose. Move the hose gently about to dislodge
any waste and ensure complete drainage.
Close black water valve as soon as tank is
empty.
NOTE: Do not open the gray water valve until
the black water tank is drained and dump
valve closed to avoid sewage back-up
into gray tank. Gray water also rinses
any black water solids from the drain
hose.
5. Open the gray water valve. Be sure there are
no sags in the hose to ensure complete drain-
age. Close gray water valve as soon as tank
is empty.
6. After both tanks have been drained, run sev-
eral gallons of water into the sewage tank
through the toilet. Then open sewage dump
valve and drain the tank again. Close valve
and replace dust cap securely.
7. It is advisable to add an odor control chemi-
cal to the sewage holding tank. These chemi-
cals are available at most R.V. stores.
8. Rinse sewer hose thoroughly with water and
stow.
NOTE: We recommend that you dump all hold-
ing tanks before traveling to avoid carry-
ing unnecessary weight.
Flushing your Black Water Holding
Tank
The black water holding tank is equipped
with an internal flushing head to allow you to
rinse the inside of the tank with clean water after
dumping.