A remanufacturing method is provided for a process cartridge which is detachably mountable to a main assembly of an electrophotgraphic image forming apparatus. The system measures the height and flow of the mud and cuttings in the pipe. The routing device generates an instruction message that causes the particular device to execute the particular command, and the routing device forwards the instruction message to the particular device via the LAN. The second set of switches form a route associated with the first variable communication paths that is not predefined and that is dynamically defined at a time of automatic rerouting. A supplemental lock arm member is movably secured to the coupler body and is movable between an unlocked position and one or more locked positions. Also included is a polyp snare extending through a first channel of the snare positioning assembly, through the aperture, and through a second channel of the base member.