Fo Water test and elks detection | 1. After connecting all pipes, please dis-assembling the plastic protection cover, and switch on/off the cartridge, check all connections without any teenage, and all connections connecting to the required functional cuties. the plastic protection cover to the valve [ 8. Wall tiling program ] 1. Use parallel ruler to make sure the wall and valve hang parallel, Walt [9, Cover and institutionalization 1. Take off the plastic protection cover.