Getting rid of CO2 by heating and the refining of wine:
When yeast ferments the natural sugars in wine, alcohol and CO2 are produced. These few steps will assist you in getting rid of the CO2 gas out of your wine.
After you have completed step 3 (stabilizing and clearing) and have vigorously stirred the wine – suggest 2 minutes three or four times over an hour, move onto this next step.
The heating of wine assists in the elimination of the carbonic gas and helps to refine and mellow out the wine. It also increases the aging and makes the wine smoother.
For red and white wine: use a heat belt ($27.95) only on an Italian carboy warming the wine up to 30 – 40 degrees C (to achieve this cover the carboy with a blanket). One heat belt will raise the temperature to 30 degrees C, two heat belts will raise the temperature to 35 degrees C. Once the optimum temperature is reached maintain it for 24 hours. Then allow the wine to return to room temperature. Over a 2 week period do this cycle of warming the wine and then allowing it to return to normal temperatures up to 3 times.
During this entire process leave the vacuvin stopper in the carboy under vacuum – this will allow you to pump the wine a few times each day. The correct usage of the Vacuvin is this – pump the Vacuvin creating a vacuum until you hear a clicking sound, once clicking do another 20 pumps. An indication that you are finished removing the CO2 is when you have created a vacuum and no bubbles are produced.
This process may take time, if you still have CO2 at 3 weeks, proceed to step 4 and rack the wine off the sediment. Continue using the Vacuvin on a daily basis until no bubbles are produced.
Final check is to use a Home Vintner CO2 tester. Ask for your free tester the next time you buy a wine kit. Fill this bottle 3/4 full with the wine to be tested. Put your thumb over the end and shake twice. Place the test bottle by your ear and release your thumb. If there is a strong PSSSSSS sound then you still have CO2 gas. If there is no sound then you are ready to bottle.