09-10-2016, 05:23 PM
It sounds like the motor start to be tired. It should autolock in the position when close or open, this is done with the help of a gears for endless screw type of motors or with a locking valve for hydraulic rams. Overtime it is likely they get tired due to wear and tears.
two solutions:
replacement of the motor or fitting of a lock i.e maglock or electric deadlatch
two solutions:
replacement of the motor or fitting of a lock i.e maglock or electric deadlatch