Airstream Flying Cloud 2019 - Black Water Tank Flush; Drain Systems Cleaning

Maintenance
8-14 2019 Flying Cloud
1� Black Water (Main) Dump Valve
2� Light
3� Light Switch
4� Auxiliary Tank Dump Valve
5� Drain Cap
1
5
4
3
2
1� Wastewater (Gray) Tank Valve
2� Light
3� Light Switch
4� Sewage (Black) Tank Valve
5� Drain Cap (Drain Hose Hookup)
Black Water Tank Flush
The trailer has a water hose connector specically
for ushing the Black Water Tank. To use, hook up a
garden hose and turn it on. Within the tank, a head with
multiple holes will spray the interior surface of the tank.
Once the tank is about half full, turn the garden hose
off and ush the water from the tank using the dump
valve. The valve should be closed for the rst couple of
minutes, and then opened to let the water out in a rush.
Repeat as needed.
It is recommended the tank ush be used on a regular
basis or the holes on the spray head may become
clogged�
Drain Systems Cleaning
The only cleaning agents that can be used without
causing harm to the system are household ammonia
and tri-sodium phosphate in small quantities. Do not
use any product that contains any portion of petroleum
distillates. This type of product will attack the rubber
seals of your toilet and dump valve. Also, do not use
any dish detergent or abrasive cleaners. All products
should be marked as approved for ABS drainage
systems.