Airstream Flying Cloud 2020 - Winterizing and Storage; Black Water Tank Flush; Drain Systems Cleaning

Maintenance
8-14 2020 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.
Winterizing and Storage
When storing your trailer for short or long periods,
use the same precautions as you would in your own
home in regard to perishables, ventilation, and rain
protection. In addition, for prolonged storage periods,
ush out all the drain lines and the holding tanks. Also
drain the entire water system including the water heater
and the water storage tank. Instructions for draining the
water system are explained in the following paragraphs
on winterizing�
The main consideration in winterizing your trailer is to
guard against freeze damage to the fresh water system
lines, tank, and pump, the waste drain system including
the traps and tanks, the water heater, and the batteries.
To completely winterize your trailer follow this
procedure:
1� Level the trailer from side to side and front to rear.
Open all faucets.
2� Turn the water pump switch to the ON position to
expel water from the storage tank
3� Open all drain valves including drain plug or valve
on water heater and exterior water service valve.
4� While the water is draining from the system, open
and ush the toilet-ushing valve. Depress hand
spray lever while holding the spray head down