Airstream Sport 2017, Owner'S Manual

Page: 76 / 90

Maintenance
8-14
2017 Sport
Black Water Tank Flush
The trailer has a water hose connector specifically
for flushing the Black Water Tank. To use, hook up a
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 vacuum breaker and check
valve will be located inside the trailer above the exterior
connection. In most models, this will place them under
the lavatory.
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
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,
flush 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� Replace the galley faucet filter with the bypass pipe
(refer to Galley Faucet Filter in Section 5 - Interior).
Store filter in a warm place.
3� Turn the water pump switch to the ON position to
expel water from the storage tank
4� Open all drain valves including drain plug or valve
on water heater and exterior water service valve.
5� While the water is draining from the system, open
and flush the toilet-flushing valve. Depress hand
spray lever while holding the spray head down
inside the bowl. Depress hand spray thumb button
on the telephone shower head while holding down
inside the tub and drain all water from the flexible
hose. Unscrew the heads on both spray units and
store.
6� Turn the pump switch OFF after all water has been
removed from the storage tank.
7� Remove exhaust hose from water pump.
8� Disconnect the water pump inlet connection and
turn the pump on until all the water is expelled.
This water, about 1/2 cup, can be caught in a towel
or rag�
9� Lower the front of the trailer as far as the jack
will allow until water ceases to drain, then crank
the jack up as high as it will go and allow any
remaining water to drain out.