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plumbing SyStem
Black/Grey Water System
Water from the sinks and shower ows into the gray water (or waste water) holding tank.
Water from the toilet will ow into the sewage (or black water) holding tank.
The weight of the holding tank contents is not calculated into the RV 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 RV GAWR
or RV GVWR. Potential damage to suspension components, such as springs, tires and axles,
could result.
If your RV holding tank(s) are located behind the axles, the weight of the full tank(s) will
reduce the hitch weight. Trailer sway and other handling difculties 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.
Before using the RV 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 normally loosen any accumulated waste debris or
solids from the sides of the holding tanks.
Drain pipes With P-Trap (If So Equipped):
The drain pipes may be equipped with a “P-trap” installed to help prevent odors from
escaping into the RV. During travel, water from the P-traps may spill and permit odors into
the RV.
NOTE: Return to the When you are nished adding RV antifreeze
section to complete the winterization process.
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 tow
vehicle handling characteristics.
Do not add automotive antifreeze or caustic chemicals such as laundry
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.
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