10-7
SECTION 10
PLUMBING SYSTEMS
10 - PLUMBING SYSTEMS
Dumping Holding Tanks
1. Remove dust cap from drain and connect
drain hose. Be sure it is firmly attached.
NOTE: The dump valve drain outlet swivels
downward when necessary to avoid
bends in the drain hose which could trap
solids while dumping or to provide more
direct drainage while using on-site
sewer hook-ups.
2. Open the sewage (black) tank 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.
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 black tank
valve and drain the tank again. Close valve
when done.
5. Rinse end of sewer hose thoroughly with
water and stow.
6. 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.
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 Flushing System inlet fitting
in the water system compartment. (This inlet
is clearly marked separate from the City
Water 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.
Using On-Site Sewer Hook-Ups
The drain hose may remain attached to the
dump outlet and be routed out the flipdown hatch
in the bottom of the compartment while the motor
home is parked and connected to an on-site sew-
age hook-up. The center outlet section may be
swiveled downward for better hose alignment
and drainage.
Holding Tank Valves (Typical)
Waste Tank Flush