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Provided is a method of operating an apparatus for inerting a wave soldering installation having a solder bath and a conveying system for producing one or more solder waves comprising an immersion box which is closed on all sides, shaped like a frame, can be immersed in the solder bath and which has

Provided is a method of operating an apparatus for inerting a wave soldering installation having a solder bath and a conveying system for producing one or more solder waves comprising an immersion box which is closed on all sides, shaped like a frame, can be immersed in the solder bath and which has porous pipes to distribute nitrogen, the pipes being arranged inside the immersion box in housings being designed such that the porous pipes are arranged therein in such a way that the porous pipes essentially cannot be struck by solder splashes produced during the operation of the wave soldering installation. The method includes supplying the inert gas at a temperature far below the temperature of the solder.

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1. Method of operating an apparatus for inerting a wave soldering installation having a solder bath and a conveying system for producing one or more solder waves comprising an immersion box which is closed on all sides. shaped like a frame, can be immersed in the solder bath and which has porous pip

1. Method of operating an apparatus for inerting a wave soldering installation having a solder bath and a conveying system for producing one or more solder waves comprising an immersion box which is closed on all sides. shaped like a frame, can be immersed in the solder bath and which has porous pipes to distribute nitrogen, said pipes being arranged inside the immersion box in housings being designed such that the porous pipes are arranged therein in such a way that the porous pipes essentially cannot be struck by solder splashes produced during the operation of the wave soldering installation, and wherein at least a first porous pipe is arranged on an inlet side of the apparatus which lies parallel to a solder wave generated during the soldering treatment, and a second porous pipe is arranged on an opposite, outlet side, in each case in an upper region of the immersion box, the method comprising flowing said inert gas through the second porous pipe on the outlet side at a low rate which is greater than that through each of the remaining porous pipes.