Airstream 1980 Argosy Owner's Manual page 82

On gas refrigerators, the flue will require
occasional cleaning because an obstruciton in
the flue can reduce or stop flue draft. Flue
obstructions can cause odors outside
refrigerator, slow freezing and higher cabinet
temperatures. To clean, it will be necessary to
gain access to the back of the cabinet. It is
recommended that you contact your
Authorized Airstream/Argosy Dealer for this
operation.
When cleaning, remove all food and clean the
interior and all other plastic parts with warm
water, and mild detergents. Never use
abrasive or caustic cleansing powders,
polishes, cleaning paste, gasoline,
turpentine or other solvent type cleaners.
Use a damp cloth for cleaning and finish with a
soft dry cloth.
When the refrigerator is to be out of operation
for some time, always leave the door slightly
open or place a pie tin of barbecue charcoal on
the shelf.
Additional information on the refrigerator is
available in the Service Manual.