Electrical equipment blow-out and cleaning booth

The booth is used in the maintenance and repair of metro car electrical equipment — traction motors, motor-compressors, apparatus boxes, contactor panels and control units. Assemblies are cleaned of conductive dust, brush wear products and graphite dust with compressed air inside an enclosed chamber, which prevents contamination from spreading around the shop and reduces dust levels at workplaces.

The chamber is made of steel panels with glazed viewing windows and double-leaf doors for rolling in the assembly. Inside there is a turntable on a roller support that allows the motor to be turned towards the operator without a crane. Blowing is done with hand guns through glove ports or, in the open-front version, by an operator standing at the open front under the protection of the extraction system. Dust-laden air is drawn off by a fan through a pre-cleaning cyclone and a fine cartridge filter; the collected dust is discharged into a sealed container.

Depending on the task, the booth is supplied with a ramp and rail track for rolling in a motorized wheelset, a built-in compressed air dryer, an ionizer for removing static charge and an automatic filter regeneration system with pulse-jet cleaning. Chamber dimensions are calculated for the largest assembly in the depot's range.