Making coffee in large urns is just as easy as making coffee in smaller coffee makers. There are just a few simple rules of thumb. The urn should be turned off no more than 30 minutes before the coffee is ready to be served, according to Take-a-Coffee-Break.com. Also, the coffee needs to be served as soon as it has completed brewing to be enjoyed when it is as fresh as possible. Coffee urns are economical for large gatherings that need 30-100 cups of coffee.
Fill the urn liner with filtered clean water to a level that is about 2 inches from the top.
Press the heat selector switch to the "Brew" position.
Place the spray arm over the top of the urn. Push "Start" and leave it on for 30 seconds. Push "Stop" and drain the liner.
Set the timer for the desired amount of water. Most urns brew at a speed of one cup per minute. The water level portions to choose from are 10, 14, 18, 22 or 26 five-ounce cups of coffee or more. Many urns brew up to 100 cups of coffee. Each urn has an owner's manual for a coffee and water measurement ratio.
Weigh the coffee and spread it evenly within the filter paper with a spoon. Use 1 pound and 2 ounces of roasted coffee for a five-ounce portion.
Place the filter paper carefully within the basket. Place the basket containing the paper and the coffee in the top of the urn and cover.
Position the spray arm through the hole in the cover.
Wait for the brew temperature light to click on. When it turns on, press the "Start" button.
Press the heat selector switch to "Hold" position after the brewing has been completed for five minutes. Discard the paper filter and grounds. Rinse the basket with water.
Drain and rinse the entire urn after use.