Ts Water test and leak detonation 1. After connecting all pipes, please disassembling the plastic protection Cover, and site on/off the cartridge; check all connections without any leakage; and all connections connecting to the required functional outlets. the plastic protection cover to the valve. By Wall tiling program | 1, Use parallel ruler to make sure the wall and valve hang parallel. 1. Take off the plastic protection cover. 2. Put the cover board on the valve and tight the handle firmly 19.