Faults, overrides, drifting parameters and missing ownership can quietly weaken automation after handover.
Degradation is usually cumulative
A single override or failed sensor may appear harmless, but unresolved exceptions accumulate and change how operators use the system.
Trend data, alarm history and override status provide evidence for separating equipment faults from control or operating problems.
Restore clear ownership
A sustainable maintenance process records the reason for changes, closes recurring faults and reviews schedules and setpoints against actual use.