Wastewater Disposal; Sewer Connection And Camping - Tiffin Motorhomes WAYFARER 2017 Owner's Manual

PLUMBING & BATH FEATURES

WASTEWATER DISPOSAL

Both of the holding tanks terminate in a valve arrangement that permits draining each tank separately or
together. It is recommended to drain the black-water tank first before draining the gray-water tank. This
procedure permits the water from the gray tank to wash the black-water residue from the drain lines.
The valves that open to release the water are called gate valves. The blade that closed the opening in the
sewer drainpipes is connected to the T-handle to release contents of the tank(s) when pulled. The sewer
line must be securely capped during self-containment use to prevent leakage of waste materials. Do not
pull the holding tank gate valve "open" when the protective cap is installed on the pipe.
Figure 13-10: Sanitation Coupling Valve
Always drain the tank into an acceptable sewer inlet or dump
station. Whenever possible, drain both the holding tanks prior
to traveling. The carrying capacity of your vehicle will be reduced
if water is left in the black or gray tanks. The holding tanks should
only be drained when they are at least ¾ full. Doing this will
provide a sufficient volume of water to allow the complete
flushing of waste materials in the drain lines and hose. If the
tanks are not ¾ full, add enough water to allow for sufficient
flushing.
To empty the wastewater tanks, connect the adapter, supplied with your vehicle, to the drain hose.
Unscrew the cap from the drain. Connect the hose, with the adapter in place, to the drain fitting. Open the
gate valve completely by pulling on the T-handle. The tank will start to drain as soon as the T-handle is
pulled. After you have drained the black-water tank, immediately drain the gray-water tank. This procedure
helps to flush the black water from the sewage hose. When both the tanks are empty, flush them with a
freshwater rinse before you close the valves. The gray tanks are easily flushed by pouring a couple of gallons
of water into a sink drain. The drain outlet is engineered for quick release of the drain hose adapter. Always
close the gate valves and secure the end cap to prevent leakage while the vehicle is in transit.
After draining the black-water tank, it is recommended to add a holding-tank deodorant to help control the
odor and break down the solids. Follow the instructions given on the holding-tank deodorant package.

SEWER CONNECTION AND CAMPING

While using the motorhome, it is important to keep the black-water holding-tank gate valve closed at all
times, except when dumping. This allows an ample amount of liquid to remain in the tank to provide a
smooth flow through the gate and drain valves when dumping. Sufficient liquid in the tank causes a swirling
action that should take any accumulated solid wastes with it. Accumulation of solid wastes in the black-
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