An apparatus including a first compartment and a second compartment is disclosed through which livestock animals move. The separator includes an upper-tier elongate conduit, a lower-tier elongate conduit and a plurality of spaced apart connectors. A release mechanism is coupled to the braking mechanism and the tether for actuating the braking mechanism upon the rider inadvertently falling off of the recreational vehicle. Since the microwave reflected from the peripheral portion of the radial waveguide can be used to produce a plasma if any electromagnetic absorbing member is not disposed, the plasma can be produced efficiently, and excessive heat is not generated. The method removes the first wiper blade and installs a second wiper blade, wherein the second wiper blade exerts a second abutment pressure when coupled to the OPC drum.