Waste Water Systems; Or Drains - Airstream International 2020 Owner's Manual

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General Information

Waste Water Systems

The main parts of the waste water system are the
toilet, dual holding tanks, and tank dump valves (see
Section 8 - Maintenance for dump valve information).
The system is designed to provide complete self-
contained toilet facilities, while on the road or parked,
without being connected to a sewage line� It may also
be used in the stationary position while connected to a
sewage hose�
Keep the dump valves closed with either method and
empty the tanks when they are nearly full� The idea is
to send a large volume of water through the tanks and
hose at the same time to float solids away.
After the sewage tank has been emptied, close the
gate valves and put approximately five gallons of water
in the sewage holding tank using the black tank flush
inlet� This will spray the interior of the tank with water
and help prevent solids from building up in the sewage
holding tank� The addition of a deodorizing agent like
Aqua-Kem® will help prevent odors�
Should you ever have a buildup of solids, close the
valves, fill the tanks about 3/4 full with fresh water,
drive a distance to agitate the solids, and drain the
tanks�
Things Not To Put Into Toilet Or Drains
• Facial tissues (they do not dissolve like toilet paper).
• Automotive antifreeze, ammonia, alcohols, or
acetone�
• Table scraps or other solids that may clog the drains�
23-ft. CB Model
2
3
1� Galley Drain
2� Lavatory Drain
3� Shower Drain
3-10
23-ft. FB Model
1� Lavatory Drain
2� Black Water Tank (Toilet)
3� Galley Drain
4� Grey Water Tank
5� Shower Drain
25-ft. RB Model
1
1� Lavatory Drain
2� Black Water Tank (Toilet)
3� Galley Drain
4� Gray Water Tank
5� Shower Drain
2
1
5
5
4
2020 International
3
4
1
2
3

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