uptime's technology traces elevator faults in real time, records them and analyzes them to provide maintenance recommendations. We have the case here of an elevator showing faults related to the elevator doors:
■ A fault indicating that the door is opening too slowly is activated (blocking fault after several appearances) appears 5 times on the sixth floor in the space of a few days.
■ A fault indicating that the door is closing too slowly is also activated (again, blocking fault after several appearances), it appears 17 times, still on the sixth floor.
A maintenance recommendation is then proposed by uptime:
■ Take the brand's diagnostic tool when needed. The latter may be able to provide additional details once connected to the diagnostic port.
■ Perform a check on the sixth floor door lock.
■ Take spare lock rollers before setting off if replacement is necessary.
The technician can plan to verify this problem during their next regulatory visit, following the directions in the uptime recommendation. Arrived on site, he will indeed find a blocking problem preventing the proper functioning of the landing doors. 👇
As a nut was missing, the roller no longer held securely in place on its axis and moved when the door moved. When the roller got in the way, it produced resistance to the movement of the door (mechanical stress). The absence of a nut could have caused the roller to come out completely from its location and completely block the door, causing a failure.