Abstract: An apparatus including a blowing chamber having a cable inlet, a cable outlet, and a fluid inlet, wherein the cable outlet is configured to be connected to the duct. A pushing drive, a first conveyer part and a second conveyer part, wherein the conveyer parts are arranged at opposing sides of a cable guidance space and wherein one or both conveyer parts are configured to be driven by the pushing drive—and thereby induce a driving force onto a part of the cable arranged in the cable guidance space, wherein one or both of the first and second conveyer part is configured to be moved towards and away from the cable guidance space. A clamping force control that controls the clamping force applied onto the cable by the conveyer parts according to a first clamping setting while the driving force is applied onto the cable.