Automatic compressed air maintenance system for ASD aspirating pipelines operating in low-temperature or particularly dusty environments. The TFVSK1B control unit manages the operation of the blowing and isolation valves for the management of one or two independent aspirating pipelines. Maintenance cycle activated by external command and/or programmed every 24 hours with simultaneous actuation of the two pneumatic maintenance channels. The compressed air used must be: clean, dry and oil-free. Power supply voltage 24V DC. Standby current consumption 20mA. Current consumption during the maintenance cycle 100mA for each pneumatic maintenance channel. The control unit configuration must be completed with a TFMC-VC-x-x microprocessor, chosen according to the operating context, and with the TFFW-VC label to be applied to the enclosure. The pneumatic channel configuration consists of: a TFSSK-MF quick-release coupling, a TFAVK isolation valve and a TFDVK blowing valve; the valves must be chosen according to the context of use. The pneumatic equipment must be doubled if the system manages the maintenance of two aspirating pipelines. Operating temperature -40...+60°C. Polycarbonate enclosure. Dimensions (L x H x D) 200 x 140 x 80mm.