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Black Tank Flush (if so equipped)
The black tank ush (no fuss ush) inlet is typically located on the utility center panel (if
so equipped) labeled as “Tank Flush”. For models not equipped with a utility center, the
inlet is located on the side of the recreation vehicle. The location may vary depending on
your model. Attach a garden hose (connected to a pressurized fresh water source) to the
black tank ush inlet. The water goes directly into the black water holding tank sprayer
connection, allowing you to remove debris and preventing accumulation. A check valve is
incorporated in the plumbing lines to prevent back ow. Flush the black water tank each
time the grey and black water holding tanks are dumped or as needed.
1. Dump the black water tank (see Gray Tank Drain & Black Tank Drain) and leave the
black tank drain valve open.
2. Connect a garden hose from the water supply source to the black tank ush.
3. With the water source turned ON, ush the black water holding tank until the water
running out of the black tank drain valve is clear (not discolored or cloudy).
4. Disconnect the garden hose and close the black tank drain valve. Fasten the sewer hose
housing dust cap back on the tank ush inlet.
1. Black tank should be empty prior to winterizing.
2. Rinse the black tank prior to blowing it out with air.
3. Attach the 4” sewer hose to the dump connector under the RV.
The black tank drain valve must be OPEN any time there is a hose (water
supply) connected to the black tank ush.
Do not leave any hose (water supply) connected to the black tank ush
when it is not in use.
Do not use the same hose to ll your fresh (potable) water tank that is used for
the black tank ush.
: Emptying the black tanks in the spring will ush
antifreeze out of the macerator system.
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