Here is a list of steps to clean the inside of your Opal Ice Maker with a bleach solution:
Step 1: Unplug the appliance.
Step 2: Remove the ice bin. Remove the water filter (if there is one) and replace it with the reservoir's screened intake cap.
Step 3: Drain the ice maker. Unhook the top of the drain hoses at the back of the unit and lay them down to drain into a sink or bucket that is below the level of the ice maker. Remove the plugs and allow the water to completely drain. Once the water stops flowing, re-insert the drain plugs.
Step 4: Create a solution of five cups of water and one teaspoon of household bleach.
Step 5: Pour the solution into the water reservoir, up to the fill line shown.
Step 6: Plug the Opal in and hold the ‘Clean’ button for 3 seconds to initiate the cleaning process.
Step 7: Water will begin circulating and the ‘Cleaning’ indicator will light up on the left-hand side of the unit to confirm the unit is now in the cleaning process. After three minutes the water will stop and the ‘Cleaning’ indicator light will turn off.
Step 8: Drain the Opal again, just like in Step 3.
Step 9: Add five cups of fresh water to the water reservoir, and press the ‘Clean’ button to initiate a second cleaning cycle to rinse the machine. To exit the cleaning cycle at any time, press and hold the ‘Clean’ button for 3 seconds.
Step 10: Repeat the draining and the rinsing (Steps 8 and 9) adding fresh water to the reservoir each time. You can repeat the rinse cycle as many times as you feel necessary.
When complete fill the unit with fresh water and press the ‘Power’ button to start making ice.
The process described here is applicable if there are no mineral deposits in your machine. In case there are mineral deposits, you should do the descaling procedure first.