Jayco REDHAWK 2023 Owner's Manual page 105

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.
1. Remove the spray nozzle from the other end of the hose.
2. Hold the open end of the hose near the ground and any water in the
line should drain out.
Disconnect the hose from the fitting, and store in the RV.
3.
4. Close the port cover.
Winterizing the Spray Port with Antifreeze (if so equipped)
1. As you are putting antifreeze into the water lines, attach the hose to the Spray Port.
2. Have a container close by to capture antifreeze.
3. Pull the trigger on the spray nozzle until antifreeze comes out (into the container).
4. Release the nozzle and disconnect the hose from the port.
5. Rinse out the hose before storing it.
Maintenance Record
Section 8: Plumbing System
Table of Contents
99