This is the 11087th most frequent Spanish word.
efectuaron
"Efecutaron" means "they carried out" or "they performed."
Efectuar is used here to indicate that an action, in this case maintenance, has been carried out or executed.
Los técnicos efectuaron el mantenimiento del equipo este mes.
The technicians performed the equipment maintenance this month.
Efectuar conveys the idea of implementing or carrying out changes.
Los organizadores efectuaron cambios significativos en el programa del evento.
The organizers made significant changes to the event program.
Efectuar is applied to signify that a structured action, testing, has been undertaken systematically.