Dumping Holding Tanks - Winnebago 2004 Ultimate Freedom Owner's Manual

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.

DUMPING HOLDING TANKS

1. Attach the drain hose and place end of sewer
hose into disposal opening.
2. Open the sewage (Black Water) valve with a
quick pull. OPEN ONE VALVE AT A
TIME. Move hose gently about to dislodge
any waste and to ensure complete drainage.
NOTE: Do not open the gray tank valve until the
Black 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.
1. Pull to drain black tank
Waste Drain
Outlet
3. Close sewage valve and open waste (Gray)
Water dump valve with a quick pull. Close
valve handle as soon as tank is empty.
4. 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
when done.
2. Pull to drain grey tank
Waste Hose Storage
PLUMBING SYSTEMS
5. 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.
6. Rinse end of 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 spray head that allows you to
rinse the inside of the tank with a shower of
clean water after dumping.
1. Dump your black water holding tank in the
usual manner at approved sewage disposal
station.
2. Leave black water dump valve open while
flushing tank.
3. Attach a garden hose from a city water
hydrant to the Waste Tank Flush inlet in the
water system compartment. (This inlet is
clearly marked separate from the City Water
inlet.)
Black Tank Flush Inlet
4. Turn the water on to begin flushing; allow
water to run for about three minutes.
5. Disconnect hose from flushing system fitting
and close dump valves.
SECTION 7
7-7