Grand Design Momentum, Owner'S Manual

Page: 117 / 220

115
Plumbing Systems
Black/Grey Water System
The sinks and shower drain into the grey water (waste water)
holding tank. The toilet drains into the black water (sewage)
holding tank.
• ALWAYS empty the grey 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.
The RV's cargo carrying capacity is based on empty holding
tanks. Any additional weight for the contents of the holding
tank(s) will reduce your cargo carrying capacity by the same
amount.
Traveling with your holding tank(s) full could
result in the following dangers:
• Reduced available cargo capacity.
• Exceeding individual tire ratings and/or the
GAWR or GVWR.
• Potential damage to suspension components,
such as springs, tires and axles.
• Reduced hitch weight, if your RV holding tank(s)
are located behind the axles.
• Trailer sway and other handling difficulties,
as a result of the hitch weight being too light.
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 unpleasant odors and help
break down holding tank contents (unless winterizing). Follow
the deodorant bottle or package instructions. Driving to a dis-
posal site will normally loosen any accumulated waste debris
or solids from the sides of the holding tanks.
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.
WARNING