FOUR WINDS INTERNATIONAL 2007 Presidio, Owner'S Manual

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PRESIDIO
If you intend to store the motorhome through periods of sub-freezing weather in an unheated
environment, it will be necessary to winterize the water system. Damage to water system
components will result if proper winterization steps are not taken.
• Level the motorhome for good system drainage.
• Drain the waste water tanks (black then gray following drainage guidelines).
• Turn the water pump switch OFF.
• Open all faucet's, and the water heater drain.
• Open the low point drain (exterior shower).
• Drain the fresh water tank.
• When all lines are drained, close the water tank valve, all faucet's, the water heater
drain, and the exterior shower.
• Turn the water heater bypass valve ON so the tank does not fill with antifreeze.
• If equipped, remove the kitchen water filter.
REFERENCE: Refer to the water filter manufacturer’s guidelines regarding proper
usage and maintenance of the filtration system.
• If the refrigerator is equipped with an ice maker, turn OFF the water valve.
• Position antifreeze container so siphon hose can be connected to the winterizing
connection.
• Turn valve to position which will allow the water pump to pump antifreeze from the
container.
• Turn on the water pump and let each faucet run until antifreeze flows freely from both
the hot and cold supply lines. Also, run the shower and toilet until antifreeze is visible.
• If motorhome is equipped with a washer/dryer turn the washer ON and let run until
antifreeze is visible and continue to run for 15-20 seconds. Turn the cycle selector to
rinse cycle to ensure the antifreeze gets into the pump to protect it.
• Turn OFF the water pump.
• Pour one cup of antifreeze in every drain to protect the P-traps.
• Before using the system again in warmer weather, completely flush the systems with
water, flush the toilet, and sanitize the entire fresh water system. When using the
motorhome during cold weather, and water in a tank or drain line should happen to
freeze, you should take immediate steps to thaw it before damage to the system
occurs. DO NOT continue to use the water system components if such a condition
exists. If damage has occurred, make sure to have it repaired before using again.
10-8
WATER SYSTEMS
WATER SYSTEM WINTERIZATION