[Joe Hollars]

Originally Posted by rslopez65

Here is the procedure we have used for the past 11 years with no problems. Hope this helps.


WINTERIZING CHECKLIST (COMPRESSED AIR METHOD)


CAUTION: DO NOT EXCEED 30 PSI AIR PRESSURE!!!

ENSURE THE HOLDING TANKS HAVE BEEN EMPTIED AT AN APPROVED WASTE WATER DUMP STATION PRIOR TO BEGINNING.

1. Connect the special hose adapter to the “BLACK TANK FLUSH” input of the trailer and the other end to the air compressor. Blow out the BLACK TANK FLUSH line.

2. Open the LOW POINT drains and all the faucets in the trailer including the outside shower and allow them to drain. Close all the interior faucets and outside shower.

3. Open the valve for the FRESH WATER tank and allow it to drain completely. Once completely empty, turn the WATER PUMP “ON” for about 30 seconds to clear any water from the suction lines and pump.

WARNING: ENSURE THE WATER IN THE WATER HEATER TANK IS COOL BEFORE PROCEEDING TO STEP 4!!!

4. Verify the WATER HEATER is OFF, both gas and electric, then remove the drain plug and open the PRESSURE RELIEF VALVE to allow the tank to drain. After completely empty, turn the WATER HEATER BYPASS VALVE to the “BYPASS” position.

5. If equipped with a water filter, remove and discard the cartridge. Drain the water from the cartridge holder and reinstall.

6. Connect the special hose adapter to the FRESH WATER INLET of the trailer and the other end to the air compressor. Open each faucet one at a time and blow out the water lines until no water can be seen coming out of any of the fixtures and lines.

7. Hold open the toilet valve to allow the water to clear from the toilet supply line.

8. Open the diverter valve on the shower faucet to clear the water from the shower hose and head. Do the same for the outside shower (if equipped).

9A. If no washer/dryer is installed: Open the hot and cold valves to allow water to clear the supply lines. Use a suitable container to catch the water.

9B. If equipped with a washer/dryer: Turn the washer on to the fill cycle and select the warm water setting. Allow air to blow through the lines until no water comes through.

10. Pour about 1 quart of RV Anti-Freeze in to each drain, p-trap and toilet (including the washer drain). Leave a little anti-freeze in the toilet bowl to maintain the air seal.

11. Once all water is removed from the lines and tanks, close all lines, faucets and valves to the system.

12. Reinstall the WATER HEATER drain plug and close the PRESSURE RELIEF VALVE. A sign by the ON/OFF for the WATER HEATER switches is a good idea to remind you and others the tank is empty.

13. Remove the air compressor adapter from the freshwater inlet.

Very through. Thank you so much for your reply
Joe