what are functional checks
FUNCTIONAL CHECKS. The functional checks simulate the operation for the characteristic of use, thus ultimately guarantee the integrity of the parts that underwent the test and the good functionality of the product.The parameters that are checked most frequently are: 1  Presence, size and depth of holes.2  Size of keyway seats.he functional checks simulate the operation for the characteristic of use, thus ultimately guarantee the integrity of the parts that underwent the test and the good functionality of the product. The parameters that are checked most frequently are: 1  Presence, size and depth of holes. 2  Size of keyway seats.