Beta-lactamase-producing bacteria (BLPB) may have an important clinical role in infections. These organisms can be pathogenic in causing the infection as well as have an indirect effect through their ability to produce the enzyme BL into their environment.
If you turn the dial to number 0, that effectively turns the fridge off. Setting the dial to 9, the refrigerator will be working at its max capability. Your personal temperature setting will depend on how much food is kept in the refrigerator. If your fridge is packed with food, it needs to be on a higher number setting to maintain a low (colder) temperature. The temperature controller dial or slider on your refrigerator is a thermostat. It kicks the compressor on when the refrigerator is not cold enough.
To defrost the fridge we had to unplug it. Well, for this model, you just can't pull it out. You have to unscrew the front cover and then rotate the leveling legs to raise them out of the way, and THEN you can pull out the fridge. Luckily DH is tall with long arms and could get a good grip on the 36 fridge.