An apparatus and a method is disclosed for manufacturing a cell of a recuperator. In a network including a first and a second network interface, each interface has an associated MAC address, and each network interface has a driver storing the MAC address for its associated interface. Thus, for example, the presence of the secondary anchoring zone at the rim protector helps greatly to improve the behavior of the tires, in particular resistance to drift. A spring urges the axle member to an extended position in which the armrest is ejected from its concealed location within the seat back cavity to enable pivoting movement of the armrest from the vertical stored position to a horizontal armrest forming position. By creating a void between the two gate stacks, the least conductive material is left filling the space between the gate stacks, and the likelihood of parasitic coupling of two adjacent floating gates is substantially reduced. The ground current detector detects a current flow in the electrical ground line and provides a detector signal to the controller indicative of the current flow detection.