Jayco SENECA Owner's Manual page 68

SECTION 7
PLUMBING SYSTEM
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Water from the sinks and shower (or tub) flow
into the gray water (or waste water) holding
tank. Water from the toilet will flow into the
sewage (or black water) holding tank. Certain
floor plans may also have the lavatory
draining into the waste (black) tank.
Drain pipes
The drain pipes have a "P-trap" installed to
help prevent odors from escaping into the
motor home. During travel, water from the P-
traps may spill and permit odors into the
motor home. These odors come from food
particles decomposing in the tank. By adding
water and using a RV approved deodorizing
agent you will dissolve the contents faster and
will keep the drain lines and tanks clean and
free flowing. These chemicals are available at
an RV supply store
independent dealer.
Vents
Another important part of this system is the
vent pipes and vents that release air from the
grey and black water holding tanks. The
exterior vent cap is attached to the roof and
must be kept clear of obstructions to perform
as intended. On some models, the vent pipe
may be part of the drainage system referred
to as a "wet vent" (water flows downward as
air flows upward in the same pipe).
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Never travel with full black or grey water
holding tanks. This not only wastes your
fuel but depending on the location of the
tank(s), it can affect your vehicle handling
characteristics.
The weight of the holding tank contents is not
calculated into the motor home cargo carrying
capacity (this extra weight would reduce your
available cargo capacity). Traveling with full
holding tank(s) could possibly cause you to
exceed the individual tire ratings and/or the
motor home GAWR or GVWR.
7 - 12
S
YSTEM
or your Jayco
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OLDING ANKS
Potential damage to suspension components,
such as springs, tires and axles, could result.
If your motor home holding tank(s) are located
behind the axles, the weight of the full tank(s)
will reduce the hitch weight. Motor home sway
and other handling difficulties can be the
result of the hitch weight being too light.
Dump the gray and black water holding tanks
before traveling to avoid carrying unnecessary
weight. If you are dry camping and cannot
immediately empty your holding tanks, reduce
your vehicle speed until you reach a dumping
station. When connected to the sewer drain
line at a campground, keep the "black tank
drain" valve closed until the holding tank is at
least ¾ full. This should provide sufficient
water to assist in complete draining of the
black water holding tank. Repeat as needed.
Before using the motor home or after dumping
the grey and black water holding tanks,
always add the proper amount of deodorant to
the black water tank to prevent malodors and
help break down holding tank contents
(unless winterizing). Follow the deodorant
bottle or package instructions. Driving to a
disposal site will
accumulated waste debris or solids from the
sides of the holding tanks.
Do not add automotive antifreeze or
caustic chemicals
detergents into the holding tanks. Although
these products may have a deodorizing
effect, they may damage the plastic and
rubber parts of the plumbing system or the
components.
Never leave the black tank drain in the open
position continuously when connected to the
campground sewer system.
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The grey tank drain and black tank drain are
also referred to as dump valves. Always drain
the black water holding tank first so the
following grey tank waste water can help rinse
any solids or debris from the dump outlet and
sewer hose.
normally loosen any
such as laundry
D
RAINS