This process repeated over and over keeps everything at proper temperature. If air is introduced to the cooling system, it can get trapped and form a bubble in the liquid. This prevents the continual flow of liquid, and can create hot spots in the cooling system, depending on where the air is trapped.
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Getting Started with Lawn Grass Articles. 1  Information on Grass Seeds Grass seeds produce two types of turfs: warm-season or cool-season Grasses. 2  Tips for Getting Rid of Weeds in Your Lawn ...tips can make weed control and removal easier. 3  How to Get Rid of Bahia Grass in a Centipede Grass Lawn ...entipede grass.