Black And Gray Water Tank Draining - Airstream Bambi 2020 Owner's Manual

Maintenance
20-ft. Front Bed model is under the front dinette seat.
There are 3 valves needed to bypass the water heater�
To Bypass, close the valve on the red water line
leading out of the water heater, open the valve on the
line perpendicular to the red and white line, and close
the valve on the white line going into the water heater�
See Figure below�
22-ft. Front Bed model is accessed through a door
under the mattress on the roadside bed or through its
storage door�
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.
8-12
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�

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 rotate 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� 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� 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 out the sewer line with auxiliary holding
tank water� Replace the bayonet ring cap prior to
traveling�
16-ft. Model
1
1� Combination Wastewater/Sewage (Gray/Black)
Tank Valve
2� Light
3� Light Switch
4� Drain Cap (Drain Hose Hookup)
3
2
4
2020 Bambi