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Section 8: Plumbing System
™ NOTE: Utility center (if so equipped) valve positions do not affect the tank
flush function. It does not matter where they are positioned when operating
the tank flush.
™ NOTE: To help insure debris does not clog the tank sprayer orifices, use
"TANK FLUSH" every time the waste holding tank is emptied.
1.
Dump the black water tank (see Gray Tank Drain & Black Tank Drain) and leave the
black tank drain valve open.
Connect a garden hose from the water supply source to the black tank flush.
2.
With the water source turned ON, flush the black water holding tank until the water
3.
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 flush inlet.
The black tank drain valve must be OPEN any time there is a hose (water
supply) connected to the black tank flush.
Do not leave any hose (water supply) connected to the black tank flush
when it is not in use.
Do not use the same hose to fill your fresh (potable) water tank that is used for
the black tank flush.
Winterize the Black Tank Flush
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.
4.
Open the waste gate valve for the black tank (under the RV).
™ NOTE: If the RV has a macerator system, you need to open the bypass valve
for the macerator under the RV. This will allow the black tank to drain
through the 4" sewer hose.
5.
Attach a garden hose to the TANK FLUSH inlet at the utility center.
6.
Attach the other end of the hose to a pressurized water source. Turn water on.
7.
Flush tank until water appears clear in 4" sewer hose.
Turn off water, disconnect the hose from faucet, disconnect hose from tank flush.
8.
9.
Connect the blowout plug to the Black Tank Flush inlet at the utility center panel.
10. Colored valves have no effect on the black tank flush inlet.
11. Connect the air hose to the blowout plug. Set the compressor to 30 PSI maximum.
12. Open the black tank drain gate valve, macerator bypass valve is open also.
13. Blow air into the flush inlet for 30 to 60 seconds.
14. Disconnect the air hose, compressor and blowout plug.
15. Close the black tank drain gate valve and close the macerator bypass valve.
Draining the Spray Port
With fixtures and drain valves open in the RV to drain the water lines, connect the blue-
coiled hose to the brass quick connect fitting at the Spray Port.
110
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