Patent ID: 7886683

Claim:
An automobile painting installation, comprising: a plurality of painting stations each connected to a plurality of main common color paint dispensing circuits, each painting station including an application device supplied with paint via an outlet of a main color changer provided with a bleed system, each main color changer including a plurality of inlet valves each connected to a main common color dispensing circuit, the valves and application devices being controlled by a control system; a secondary rare color paint dispensing and recovery system controlled by the control system and including at least one secondary paint dispensing and recovery circuit supplying the plurality of painting stations, with smaller dimensions compared with the main circuits, the secondary circuit comprising: a scraper storage and circulating system including an inlet and an outlet connected respectively downstream and upstream of the painting stations to circulate the scrapers in a part of the secondary circuit supplying the stations, at least one rare color paint tank, one solvent tank, and one spent solvent recovery tank, connected upstream of the outlet of the scraper storage system, a dispensing device connected to the inlet of the scraper storage system, to send fluid exiting the painting stations to the paint, solvent, or recovery tanks, a plurality of connecting lines of which one end is connected to the secondary circuit by a flush three-way valve and the other end is connected to an inlet valve of a main color changer to supply paint from the at least one rare color paint tank to the main color changer, and an independent bleed system provided to each connecting line to bleed the connecting line between the flush three-way valve and the inlet valve of the main color changer, the independent bleed system including a second bleed line connected to the bleed system of the main color changer downstream of the application device such that solvent used to bleed the secondary circuit bypasses the main color changer upstream of the application device.