A refrigerator which is not in level can have cooling problems, and also operates noisily than a refrigerator in level.
1. The refrigerator should be inspected to see which side is too low, or you can use a bubble level on top for checking the level.
2. The tip of a flat-headed screwdriver should be inserted into the control lever inside the leg that requires to be adjusted. If the refrigerator is tilted towards left, or if the left door is lower as compared to the right door, the screwdriver should be inserted into the left foot. If the refrigerator is tilted toward right or the right door is lower as compared to the left door, the screwdriver should be inserted into the right foot.
3. The adjustable foot should be turned to left slightly and the position of the refrigerator door should be checked. Continue till you level it correctly.