This remote suction system allows the sludge in the unit to be emptied. 

The system must be extended by the installation company using a PN16 pressure PVC tube to the access limit of the emptying truck. 

The firefighter connection DN 80 must be installed (gluing) by the installation company at the end of the PVC pipe so that the drain can be directly connected and the sludge sucked in. 

Note: Open the buffers before draining the unit and put it back into water, until the outlet line is reached after each draining.