Debris in a track is a maintenance cost
Grit, packaging fragments, strapping ends and pallet debris collect in roller door tracks and guides. Under repeated operation that material scores surfaces, causes binding and accelerates wear on rollers and bearings. The failure that eventually occurs is attributed to the door's age, when a significant part of it is accumulated debris nobody removed.
Adding the tracks and guides to the cleaning scope with a stated interval is a small task with a direct return. It also produces early warning: an attendant clearing a track will notice a bent guide, a damaged roller or a seal that has come away, and reporting that gives the site an opportunity to act before the door stops working entirely. Recording the condition found at each attendance builds a picture of how quickly material accumulates, which is what sets the right interval.
