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To prepare your rig's plumbing systems for winter storage
1. Drain all tanks. Flush out the black water and gray water tanks and be sure to get them as empty as possible. Drain the fresh water tank.
2. Drain the water heater and close the drain valve.
3. Drain fresh water plumbing system using low point drains if provided. Open all faucets and step on the toilet pedal as well. Get as much water out of the system as possible. Close the low point drains.
4. If your rig is equipped with an icemaker or washer/dryer, follow the manufacturer's recommended procedures to winterize and protect these appliances.
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