SECTION 7 –
PLUMBING
7-8
NOTE: DO NOT OPEN BOTH VALVES AT
ONCE. 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.
Black and Gray tank valve positions may
be reversed depending on floorplan and
tank location.
5. Open the Gray Waste Valve. Be sure there are
no sags in the hose to ensure complete
drainage. Close Gray Waste Valve as soon as
tank is empty.
6. Add an odor control chemical to the sewage
holding tank through the toilet. These
chemicals are available at most RV stores.
7. Rinse sewer hose thoroughly with water and
stow.
NOTE: We recommend that you dump all
holding tanks before traveling to avoid
carrying unnecessary weight.
Using On-Site Sewer Hook-Ups
The sewer hose may remain attached to the
sewage drain outlet while the motor home is
parked and connected to an on-site sewage hook-
up.
When using a sewer hook-up, keep the dump
valves closed until a tank becomes full or when
preparing to leave the site. This keeps the solids
in suspension, allowing them to be carried out
with the liquids when the dump valve is opened.
If the valve is left open, the liquids will drain off,
leaving solids in the tank. Should this
accidentally happen, disconnect the hose, fill the
tank about half full with water, and drive a few
miles to dislodge the solids. A few starts and
stops will aid in the process. Then reconnect the
hose and drain in the normal manner.
NOTE: Always keep sewage drain outlet
capped while sewage connection is not in use.
Holding Tank Level Indicators
See
“Systems Monitor Panel”
in
Section 4 -
Appliances
for further information on the
monitor panel and checking tank levels.
See “Specifications” in
Section 1 -
Introduction
for tank capacities for your model.
WASTE WATER SYSTEM
(WASTE PUMP)
(Holding Tanks)
(For units equipped with the waste
pump feature only)
The drainage system is self-contained and
uses two separate holding tanks to contain the
waste water until it can be dumped at an
appropriate waste water disposal site. This means
you can use the toilet, sinks, and shower even in
areas where utility hookups are not available.
The black water holding tank contains the
sewage from the toilet and may include bathroom
lavatory on some models. The gray water holding
tank contains the waste water from the galley
sink, and shower, and may include bathroom
lavatory.
See “Specifications” in
Section 1–
Introduction
for tank capacities for your model.
Waste Pump
The 12-volt waste pump disposes gray
holding tank waste through a small diameter
sewer hose, which is then drained through the
main sewage drain outlet.
