Tiffin Motorhomes WAYFARER 2021, Owner'S Manual

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PLUMBING AND BATH FEATURES CONTINUED
WASTE WATER DISPOSAL CONTINUED
Always drain the water tank(s) into an acceptable
sewer inlet or RV dump station. Whenever
possible, drain both of the holding tanks prior to
traveling. The carrying capacity of your vehicle
will be reduced if water and solids are left in the
gray or black tanks.
The holding tank(s) should only be drained when
they are at least 3/4 full, to check on the amount
of water and solids located in the holding tanks,
check the levels on the main control panel located
in the stairwell of your motorhome (Figure 115.1).
Figure 115.1
Main Control Panel Showing Tank Levels
Draining at 3/4 full levels will provide a sufficient volume of water to allow the complete
flushing of waste materials in the drain lines and hoses. If the tanks are not 3/4 full, add enough
water to the tanks to allow for sufficient flushing.
To empty the waste water tanks, connect the adapter supplied with your motorhome 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 by completely by pulling on the tanks T-Handle gate valve.
The tank will start to drain as soon as the T-Handle is pulled.
After you have drained the black water, immediately follow by draining the gray water tank.
This procedure helps to flush the black water from the sewage hose. When both tanks are
empty, flush them with a fresh water 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.
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