Sewer inspection and/or maintenance system with a tool exchanger system

A sewer inspection and/or maintenance system comprising a carrier system, in particular a crawler, wherein:

• a lifting arm is arranged on the carrier system, at the free end of which a device carrier is arranged,
• the device carrier comprises a first adapter,
• the lifting arm is designed such that the device carrier arranged thereon can be moved between a number of device changing positions and at least one device use position,
• a device magazine for accommodating a number of devices is arranged on the carrier system, wherein the devices each comprise a second adapter which corresponds to the first adapter of the device carrier, wherein the device is detachably attachable to the device carrier by means of the first adapter and the second adapter of a device,
• the lifting arm is movable, with a device attached to the first adapter, into a first device changing position, wherein the first adapter, in the first device changing position, is designed to release the device attached to the first adapter from the first adapter, and
• the lifting arm can be moved into a second device changing position without a device attached to the first adapter, wherein the first adapter, in the second device changing position, is designed to attach a device accommodated in the device magazine to the first adapter.