Airstream FLYING CLOUD 2023, Owner'S Manual

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Maintenance
8-12
2023 Flying Cloud
To locate external fresh water tank valve(s), look for
a white PVC petcock valve or in-line brass valve(s)
mounted to the galvanized steel underbelly. For more
information on the plumbing layout, see plumbing
layouts at the end of this section.
Drain Valve Locations
23FB - The fresh water tank drain (white petcock
valve) is under the trailer on the tank pan in front of the
roadside tires. It also has two low-point drain valves
inside the pantry cabinet behind the removable lower
face panel. The panel is held on by two pressure
catches.
25RB - The two exterior water line low-point drain
valves (brass petcocks) extend from the bottom of the
exterior fresh water tank pan under the trailer, curbside
between the tires. There is a low point drain valve in
the curbside-exterior front storage compartment.
25FB, 27FB, and 28RB - The two exterior water line
low-point drain valves (brass petcocks) extend from the
bottom of the exterior fresh water tank pan, roadside
between the tires. A separate white plastic petcock, on
the same pan, is used to drain the fresh water tank.
30RB - The two low-point drain valves are under the
rear dinette seat cushion under an access panel. The
fresh water tank drain (white petcock) is on the exterior
tank pan under the trailer, curbside between the tires.
30FB Bunk - The two low point drain valves are under
an access panel, under the mattress. There is also
a low-point drain for the toilet under the pantry. The
bottom cabinet panel is held on with a pressure catch
and pulls off for access. The two in-line drain valves
are on the fresh water tank, below the trailer, roadside
between the tires.
30FB Office - The low-point drain for the toilet is under
the pantry. A second low-point drain is located below
the desk under the pullout seat. The two in-line drain
valves are on the fresh water tank, below the trailer,
roadside between the tires.
Opening and Closing Valves
To open brass or plastic inline valves, turn the handle
to align it with the waterline. For valves connected to
the end of a water line, align the handle with the valve’s
opening. To open petcock valves, turn the handle
perpendicular to the mounting surface.
Fresh Water Tank Draining
Pumping the water out with the self-contained water
pump can empty the fresh water tank. Simply turn on
the pump switch and open a couple of faucets until
the water will no longer drain out, or on all models use
the petcock-type drain valve located on the freshwater
tank pan described above. Be sure to watch closely
and turn the pump off when the tank runs dry. Pump
damage can occur if the pump runs dry for more than a
few minutes.
Sanitizing
Potable water systems require periodic maintenance
to deliver a consistent flow of fresh water. Depending
on use and the environment the system is subject to,
sanitizing is recommended prior to storing and before
using the water system after a period of storage.
Systems with new components, or ones that have been
subjected to contamination should also be disinfected
as follows:
1� Use one of the following methods to determine the
amount of common household bleach needed to
sanitize the tank.
a� Multiply “gallons of tank capacity” by 0.13;
the result is the ounces of bleach needed to
sanitize the tank.
b. Multiply “Liters of tank capacity” by 1.0; the
result is the milliliters of bleach needed to
sanitize the tank.
2� Mix the proper amount of bleach into a container of
water�
3� Pour the correct amount of solution (water/bleach)
into the Fresh Water tank and fill with potable
water�
4� Open all faucets (hot and cold) allowing the water
to run until the distinct odor of chlorine is detected.
5� The standard solution must have 4 hours of contact
time to disinfect completely. Doubling the solution
concentration will allow for contact time of one (1)
hour.
6� When the contact time is completed, drain the tank.
Refill with potable water and flush the plumbing of
all sanitizing solution.