Black And Gray Water Tank Draining; Black And Gray Water Tank Draining; Sanitizing; Black Water Tank Dumping - Airstream International Serenity 23CB 2020 Owner's Manual

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.
2020 International

Black and Gray Water Tank Draining

To empty one or both tanks, attach the sewer hose
by pressing the bayonet fitting onto the dump valve
outlet and rotating clockwise until it feels solid and
secure. Attach the outlet end of the hose to the sewage
outlet, making sure the hose is placed so it will drain
completely. Pull the main dump valve handle as far as
it will go and wait until the tank is drained. Close the
dump valve and partially refill the tank with clean water,
and repeat the process until clean. The main holding
tank must be flushed out until all paper and waste
material is removed. Now pull the auxiliary tank valve
handle to drain the gray water tank. When dumping,
the main holding tank should be dumped first, then the
auxiliary holding tank. This will help to rinse the sewer
line with auxiliary holding tank water. Replace the
bayonet ring cap prior to traveling.

Black Water Tank Dumping

When you are in a park and connected to a sewer
outlet, keep the main holding tank dump valve closed
and empty the tank every few days, or whenever it
becomes almost full. Only by sending a large volume
of liquid, all at once, through the main holding tank will
toilet paper and other solids completely wash away.
This practice will avoid the accumulation of solids in the
main holding tank, which could lead to an unpleasant
cleaning job. Should solids accumulate, close the
dump valve, fill the tank about half full with water, then
tow the trailer for a few miles. The turbulence and
surging of the water will usually dissolve the solids into
suspension so the tank can be drained.
Maintenance
8-13