During normal operation, what two aspects should be observed in the doors?

The correct focus during normal operation of elevator doors should center on alignments and clearances. Ensuring that the doors are properly aligned is vital for safe and smooth operation. Misalignment can lead to improper closing, potential entrapment, or malfunction of safety devices.

Clearances are equally important as they must meet specific standards to prevent obstruction or interference during the opening and closing processes. Insufficient clearance can also result in door jams or damage to the doors or the hoistway.

While observing noises, vibrations, movements, and resistances can be part of a general maintenance check, they are not primary indicators of the doors' operational status. Noises might suggest issues unrelated to door movement itself, and vibrations may point to problems elsewhere in the system. Overall, emphasizing alignments and clearances provides a more focused approach to ensuring the doors operate correctly and safely.