Whirlpool, which manufactures Admiral appliances, provides refrigerator manuals through the Whirlpool website, as of 2015. Manuals for vintage Admiral refrigerators from the 1950s are available for purchase on collectible sites such as Etsy.
On the Whirlpool website, find the navigation bar near the top of the main page and select the Service and Support link. Scroll to the Manuals and Literature section and click the title. Type the model number into the search box and press Search. Select the appropriate document, and download a PDF version of the manual. If the model number is unknown, select the link below the search box to view a photo of its location.
Whirlpool customer support is available at 866-698-2538 Monday through Friday from 8 a.m. to 8 p.m. EST.