Leak test of the interconnection of split air conditioners right after assembly.

 After assembling the pipes, perform the leak test to check that there are no leaks:

- Connect the central hose of the manifold which is yellow in the nitrogen cylinder with the valves closed;

- Pressurize the suction line with 200 to 250 PSI;

- Check all connections. If there is no leak, open the manifold valve and release nitrogen from the line.