Because decks are in direct contact with the material being separated,they are subjected to abrasive wear.inspect your deck frequently for wear.
As a deck wears out, the surface becomes smoother and it becomes more and difficult to move the heavier product out from under the lighter layers.
Normally, when the wires of the deck overcover are worn halfway through, it is time to repair the deck. If the deck cover is worn completely through, there is danger of ruining the undercover, which develops the air pattern. See figure 20 B.