Black Tank Flush; Winterizing The Water System - THOR Class C Series Owner's Manual

WA T E R S Y S T E M S
NOTE: We recommend wearing gloves and
other protective gear when emptying the
holding tanks.
NOTE: It is important to familiarize yourself
with your motorhome's waste drainage
system, as some models have two gate
valves on a single black tank.
Typical black tank flush
9
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3. Drain the black water holding tank first by pulling the termination valve handle away from
the valve body. Be sure to allow sufficient time for the black water holding tank to completely
drain, then rinse the black water holding tank with several gallons of water by depressing the
toilet stool pedal, hand flush handle, or use the black tank flush (if so equipped).
4. Drain the gray water holding tank by pulling the termination valve handle away from the
valve body. Draining the gray water holding tank last allows the soapy water in the gray
water holding tank to rinse the sewer drain and flexible sewer drain line.
5. When both the black water and gray water tanks are emptied, close the termination valves
by pushing the handles back to the closed positions.
6. Remove the flexible sewer drain hose, and wash it thoroughly with clean water. Remove
the other end from the dump station inlet, and replace it in its storage compartment.
7. Replace the sewer drain caps on both the motorhome outlet and the dump station inlet.

Black Tank Flush

Do not use the tank flush valve unless the fullway termination valve is in the open
position.
Can result in an unsanitary condition leading to illness or personal injury.
Winterizing the Water Systems
Automotive antifreeze (ethylene glycol) and windshield washer antifreeze (methanol)
are poisonous. Never use these products in your fresh water system. These
products are harmful and may be fatal if swallowed.
CAUTION
WARNING
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