Without Mary
2:14 AM · Tue
The 2 AM phone call.
Operator hears an unusual noise from Station 12. Tries restarting — no luck. Line leader takes a look — not sure either. They call maintenance at home. Tech drives in, asks "what happened?" Operator re-explains. Tech re-diagnoses from scratch, finds a material jam in the feed assembly. Clears it in 3 minutes.
Downtime · cumulative00:00 → 00:60
40–60min · no record
With Mary
2:14 AM · Tue
No phone call. 7 minutes.
Operator opens Mary, taps Station 12, records: "weird noise, machine stopped." Mary matches the pattern — two options: (A) check feed assembly for jam, (B) check drive belt tension. Operator taps A, clears the jam, line restarts.
Downtime · cumulative00:00 → 00:07
7min · fault logged
Without Mary
10:47 AM · Tue · routine
The error code nobody remembers.
Operator sees an error code on the HMI. Not sure what it means. Asks around — nobody's sure. Calls maintenance. 25 minutes pass. Tech comes, hits a reset sequence nobody on the line knew about. Same error Thursday. Same delay.
Downtime · cumulative00:00 → 00:30
30min · for a 2-min fix
With Mary
10:47 AM · Tue · routine
Knowledge that compounds.
"Getting error 14." Mary: "Sensor timeout. (A) Reset — hold START 3 sec then CLEAR, (B) Check proximity sensor on left rail." Operator taps A. Machine runs. Thursday, a different operator gets Error 14. Mary already knows.
Downtime · cumulative00:00 → 00:03
3min · added to knowledge base