How do I prime the water supply system before using the water dispenser for the first time?

After installing your water and air filters, hold a glass against the paddle for about 4 minutes to purge air from the system. Then continue dispensing at least 1 full gallon (3.78 L) of water and discard it. If you skip this step, the first glasses of water may be discolored or have an odd flavor. (Page 2)