Airstream CLASSIC TRAILER - Manual (Page 73)

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PLUMBING
14. Remove any items (food, cosmetics, etc.) from trailer interior that might be
damaged by freezing - or might damage the trailer if containers break.
For additional winterizing protection add a non-toxic antifreeze (approved for drinking
water system) to the water lines using the following procedure.
1. Reconnect all lines except the hose to the pump inlet port. Close all drain valves.
2. Turn by-pass valve to by-pass position. To by-pass the water heater for winter-
izing, close valves A and C and open valve B (See illustration on next page).
3. Install a spare water purifier cartridge to be used specifically for winterizing. This
cartridge will have RV anti-freeze in it when finished and will be removed and the
clean cartridge reinstalled for normal use. Keep the spare cartridge for future cold
winterizing procedures.
4. Attach a length of hose to the pump inlet port. This piece of hose should be
long enough for the free end to be inserted into and reach the bottom of the
antifreeze container.
5. Dilute the antifreeze solution in accordance with the manufacturer’s instructions
6. Open all water faucets.
7. Insert hose length into the antifreeze container, turn the pump switch on, and run
the water pump until the antifreeze solution fills all water lines. Flush toilet. Work
hand shower spray while holding down in tub.
8. Shut off the pump and close all faucets.
9. Disconnect the hose length from pump inlet fitting and reconnect water system
inlet line.
DRAIN AND WASTE SYSTEM
Your trailer has a drain and waste system that includes
waste-holding tanks made from molded plastic, free
from corrosion problems, with trouble-free dump
valves.
The MAIN HOLDING TANK enables you to use the
toilet for several days away from disposal facilities. The
wastewater from the sink, shower, bath and lavatory
drains in the AUXILIARY HOLDING TANK. Each tank
has its own dump valve, however, both tanks drain
through a common outlet. Therefore, you need to
make only one connection when hooking up in a trailer
park with sewer facilities. The valves are labeled at the
handles.
NOTICE: Never put wet strength paper towels or tissues in your holding tank
since they won’t dissolve and can “catch” in the mechanism of the dump valve.
Colored toilet tissue is slower to dissolve than white. Most RV accessory stores
offer tissue designed for RVs that will completely dissolve.
Deodorizers
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.
Typical Dump Valve System
Dump Valve Handles