Airstream 2012 INTERSTATE Owner's Manual page 141

Decalcification
Mineral deposits left by hard water can clog the coffee maker. Excessive steam-
ing or a prolonged brewing cycle is the sign that decalcification is needed.
Basically, it is recommended to do the decalcification approximately once
every 1-3 months. During decalcification, more steaming occurs than when
brewing coffee. You may need to remove the coffee maker from the Mounting
Bracket (see HOW TO USE) and place it on a counter to clean.
1. Fill the Reservoir half full with white vinegar, then add water up to 10-cup
line mark:
2. Place the filled reservoir back into the Coffee maker and secure:
3. Remove Carafe, then remove Filter Basket, put an empty filter paper in
the Filter Basket, place the Filter Basket back into place in the Coffee
Maker:
4. Set the Thermal Carafe securely back into place in the Coffee Maker, turn
the Coffee Maker ON;
5. Let half the cleaning solution brew into the Carafe, then turn the Coffee
Maker OFF to soak. Allow the Coffee Maker to remain OFF for at least 15
minutes to soften the deposits:
6. Turn the Coffee Maker ON again to brew the remaining cleaning solution
into the Carafe;
7. When the Coffee Maker is shut OFF again automatically, empty the Carafe
and deposit the soiled filter from the Filter Basket. Fill the Reservoir with
cold water up to the 10-cup line mark, put the empty Filter Basket and
Carafe back into the Coffee Maker in their place;
8. Turn On the Coffee maker for a complete brew cycle to flush out the
remaining cleaning solution;
9. Wash the Reservoir, Filter Basket, and Carafe as instructed, return the
Coffee Maker to the Mounting Bracket.
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