FOUR WINDS INTERNATIONAL 2007 Presidio, Owner'S Manual, Page: 131 / 173

PRESIDIO
Disinfecting the water system with chlorine bleach protects you and others from bacteriological
or viral contamination from any common water source. The fresh water system should be
disinfected prior to the first usage of the system, if the motorhome has not been used in a long
time, and once every three months.
The following items will be required to perform this procedure:
Prepare a chlorine bleach solution using 1 gallon of water and ¼
cup of chlorine bleach. Use one gallon of solution for every
15 gallons of tank capacity. Example: Add 6 gallons of solution to
a 90 gallon tank.
1 - Battery powered drill (do not use an electric drill)
1 - Drill powered water pump
2 - Four foot sections of ½" inside diameter hose
2 - Female hose ends for ½" hose with ¾" threaded end (compression style)
1 - Male hose end for ½" hose with ¾" threaded end (compression style)
1. Install one male and one female hose end to one of the four foot sections of hose.
When completed, the section of hose will have a male hose end on one side and a
female hose end on the other side.
2. Connect this hose to the outlet side (usually marked with an arrow) of the pump.
The other end of the hose will connect to the city water fill, located on the motorhome.
NOTE: Prior to attaching the hose to the city water fill, remove the pressure regulator first,
otherwise the pump will not be able to push the water past the regulator. The hose will attach
to where the regulator use to be.
3. Install one female hose end to the other four foot section of hose.
4. Connect this hose to the inlet side of the pump. The end of the hose that does not have
a hose end will go into the container to pump out the solution.
5. Attach the battery drill to the pump insuring that the drill rotation matches the rotation
needed to work the pump.
6. Using the drill, pump the solution from the container into the fresh water tank.
Then remove the pump/drill apparatus and close the fresh water system.
7. Switch the water pump to the ON position. Open each faucet, in turn, and run the water
until you smell a distinct chlorine bleach odor. Do not forget the hot water, tub and
shower faucet's.
8. Allow the system to stand for four hours.
9. Turn the water pump ON and drain the system of solution by opening all faucet's. Fill
the fresh water tank and flush the system with potable water repeatedly, until the water
system no longer smells or tastes of chlorine.
10-3
WATER SYSTEMS
Sanitizing the Fresh Water System