An improved electrolytic cell, its method and system configured for simple and rapid troubleshooting, removal and replacement of the cell or a component of the cell during service and maintenance procedures is disclosed. The electrolytic cell (12) is includes a host manifold (27) housing a degassing chamber (125) and various flow paths for routing liquid and gases into and out of a guest device (33) and the host manifold (27). The host manifold (27) is connected to input sources and output collections. The guest device (33) generally houses an anode chamber (104), a cathode chamber (112), and a brine chamber or reservoir (108) that serves as a source of anions and cations for the anode and cathode chambers. The guest device (33) is separable from the host manifold (27) to repair, maintain and/or replace the cell.