Airstream 360 XL, Owner'S Manual

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AIRSTREAM 390/396 XL
BLACK TANK FLUSH
The black water holding tank must be flushed out
until all paper and waste material is removed.
Close the dump valve and refill the tank with 5 to
10 gallons of clean water and repeat until clean.
In the utility compartment on the left side is a
water hose connector marked "black tank flush."
To use, hook-up hose and turn on full force.
Within the tank a spray head with a multiple-
holed head will spray the interior surface of the
tank.
The gate valve should be closed for the first
couple of minutes, and then opened to let the
water out in a rush. Repeat as needed.
Drain Systems Cleaning
There are many deodorizers on the market in tablet, liquid, and powder form. These not only combat odor,
but also, stimulate the bacteria that works to dissolve the solids in your tank. Picking a deodorizer with
lubricating qualities will ease slide valve operation.
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 attacks the rubber seals of your toilet and dump valve. Also, do not use any dish detergent
or abrasive cleaners. All products should be marked approved for ABS drainage systems.
When winterizing drains use only recreational vehicle plumbing type antifreeze. These are sold through
your dealer.
G-30