Operation of a pipe cleaning or inspection unit, e.g. with a mounted camera for inspecting the inside of pipes, whereby the inside of the inspection unit is pumped down and then refilled to an over pressure with inert gas

摘要

Method for operating a pipe inspection or cleaning unit in which the interior of the unit is filled with gas at above atmospheric pressure by pumping the gas contained in the interior chamber out and then pumping in fresh gas into the interior of the unit until a defined over pressure is reached.