Touring Coach Winterization - Airstream 2017 Interstate Owner's Manual

Maintenance

Touring Coach Winterization

1� Level the touring coach from side to side and front
to rear, turn the water pump off, and disconnect the
city water�
2� Open all the hot and cold water faucets�
3� Open the low point drain valves for the hot
and cold water lines, the fresh water tank drain
valve, and water heater drain� There are four
fresh water line low point drain valves� Two are
located, depending on the model, under the galley
accessed by removing the drawer below the
microwave or below the refrigerator accessed by
removing the vent below the refrigerator� Two are
located under the curbside lounge accessed by
removing the cup holders� In the twin bed model
two are located under the curbside bed accessed
by lifting the mattress� The fresh water tank drain
plug is located on the front of the tank under the
touring coach� The water heater drain valve is
located on the water heater and is accessible
through the exterior water heater access door�
Remove the plug or open the valve and allow water
to drain�
4� Follow the winterizing instructions for your toilet on
the preceding page of this manual�
5� While the water is draining from the systems
remove, drain, and store the wet bath and the
exterior shower hoses and shower heads�
6� After the water has stopped running, apply at least
60 lb of air pressure at the city water inlet� This
can be accomplished at a service station if no air
compressor is available. Air fittings with regulators
can be purchased for the city water inlet� Be sure
the toilet flush valve, toilet shut off valve, all drain
valves, and all faucets are open and the pump
outlet hose is disconnected�
7� Water pump: Remove quick-connect outlet fitting
from the pump and turn the pump on briefly to
pump out any remaining water from the pump head
and lines from the tank� Check the water pump
strainer to be sure no water remains� There should
be very little water if the tank is drained� Be sure
to have a catch pan or a rag under the pump to
prevent water from spilling into the touring coach�
Leave the fittings disconnected from the pump until
the system is ready to be used again� Leave a note
on the water pump switch that the plumbing is not
connected�
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8� Remove the house batteries from your touring
coach and store in a cool dry place where there
is no danger of freezing� It is very important for
optimum life of your battery to check it periodically
and to keep it fully charged� This is especially
true in winter months, when the temperature may
drop below freezing� If the period of storage is
for 30 days or less, you may turn off the battery
disconnect switch rather than remove the battery�
Continue to check and recharge the battery as
needed, at least weekly in severe weather�
9� Remove any items (food, cosmetics, etc�) from
the interior that might be damaged by freezing,
or might damage the touring coach if containers
break�
For additional winterizing protection, add RV,
non-toxic antifreeze (approved for drinking water
systems) to your water lines using the following
procedure:
1� Reconnect all lines except the one to the pump
inlet port and close all drain valves�
2� Turn the water heater bypass valve to its bypass
position� The valve is located on the back of the
water heater and accessed through the rear doors
under the curbside rear lounge seat on the rear
lounge model, and through access hole cut in the
roadside twin bed top on the twin bed model�
3� Attach a length of hose to the waterpump inlet port�
This piece of hose should be long enough for the
free end to be inserted into and reach the bottom
of a RV, non-toxic antifreeze container�
4� Check that all interior water faucets are still open�
5� Insert hose length into container containing, RV,
non-toxic antifreeze, turn the pump on, and run
the water pump until the RV, non-toxic antifreeze
solution fills all water lines. Flush toilet.
6� Open exterior shower faucet until RV, non-toxic
antifreeze comes out of the hose, shut off the
valve, and remove the drain valve/hose assembly�
7� Close water fixtures as the RV, non-toxic antifreeze
begins to come out� Shut off the pump when
RV, non-toxic antifreeze has been distributed
throughout the system, and then reopen all faucets
to relieve pump pressure�
8� Disconnect the hose length from the pump inlet
fitting, and reconnect water system inlet line.
2017 Interstate