Researchers at Hollins University in Virginia, have discovered that drinking beverages made from soda fountain machines could contribute to episodic gastric distress. Tests conducted on both self-service and personnel assisted soda machines showed a level of bacteria, including coliform, not allowed in municipal water. A follow up article in Food Safety News suggest the bacteria lies in the tubing of the machine. Regular monthly cleaning of the tubes along with daily cleaning of the nozzles should guard against bacteria.

Daily Cleaning

Take off the cup rest from the machine to wash in warm soapy water, then reinstall.

Wash the exterior down, again using warm soapy water, rinse it and dry thoroughly.

Remove the valve nozzles from the machine and wash it in warm, soapy water. Reinstall.

Weekly Cleaning

Wash the diffusers in warm water.

Clean the ice chute.

Wash the nozzles with warm water.

Monthly Cleaning

Remove the splash plate and clean it in warm soapy water.

Clean the panel behind the splash plate with warm, soapy water. Replace the splash plate.

Flush the syrup lines:

Sanitize a bucket.

Fill the bucket with water and a sanitizing solution as recommended by your manufacturer.

Wear clean plastic gloves.

Remove the syrup line from all bags in boxes.

Open the valve and soak it in your bucket.

Use a plastic bag or glove to cover the connectors.

Empty, rinse, and fill the bucket with hot water, not above 140 degrees.

Take plastic from the connector and place in the hot water.

Activate the valve at the soda machine.

Flush the line until the bucket is empty and repeat two or three times.

Take the connector from the bucket and attach it to the new bag in box.

Activate the valve at the soda machine until all the water flushes through.