Jordan, a technical support specialist, walks you through how to dewinterize a TAB 360. The basic process of dewinterizing includes draining the unit of any antifreeze, flushing it with sanitizing solution, and then flushing it again with fresh water.

How to Dewinterize Your RV

1. Drain the Antifreeze

• Open the gray tank and low point drain valves to remove antifreeze from the system.
• Once fully drained, close the gray tank and drain valves.

2. Prepare the Sanitizing Solution

• Mix a bleach solution to disinfect the system
• A common ration is ¼ cup of bleach per 15 gallons of water.
• A stronger solution can be flushed immediately, while a weaker mix needs to sit for 12 hours.

3. Sanitize the Water System

• Attach a garden hose to the Nautilus water inlet, submerging the other end in the bleach solution.
• Set the Nautilus to sanitize mode and turn on the water pump to siphon the solution.
• Once pressurized, turn off the pump and set the Nautilus to dry camping mode.
• Inside the RV, turn on the water pump and run the solution through all faucets, fixtures, and the outdoor shower hose.

4. Flush the System with Freshwater

• Turn off the water pump. Drain the gray tank, freshwater tank, and low point drains, then close all valves.
• Connect a hose to a water source (using a water pressure regulator) and attach the other end to the city water inlet.
• Set the Nautilus to powerfill mode to fill the freshwater tank.
• Switch the Nautilus to dry camping mode and turn on the pump inside the unit to run fresh water through all faucets and fixtures.

5. Final Flush

• Turn off the pump and drain all tanks again.
• Repeat the filling and flushing process until there is no bleach smell in the water.

Once the water runs clear and odor-free, your RV is dewinterized and ready for camping!