This plant is designed to spray transparent protective paint on precious metal decorative objects and to create the appropriate environment to let it dry; anyway the machine can be loaded with articles different from those mentioned above and easily tuned on any particular working cycle. The operator can introduce pieces in the plant arranging the desired quantity of products on any one of the apposite frames and then insert it into the inlet stock: frames automatic handling will bring pieces to be treated through all cycle phases. Once loaded into the plant, frames are moved one at a time to the painting booth, where a Cartesian robot sprays the paint over the products, according to operator’s settings of paths and speeds. Frames are then passed in an ascending lift where they remain for a modifiable amount of time at ambient temperature: in this way all the micro-blisters absorbed during spraying can be released. The drying phase takes place in the hot-room (consisting of two capable lifts) where powerful hot air blowers maintain temperature at a constant value. After a natural air cooling in the last descending lift, frames can be easily unloaded from the plant outlet and pieces collected by the operator. Production rate: 60 frames per hour.