The fluid-powered scouring whip is a length of flexible tubing composed of rubber or plastic. Organization environment factors and one or more desired performance metrics associated with the organization may be determined. The seat support element is provided with a rack detent arrangement which acts between the seat support element and the receptacle, arresting and releasing various inclinations of the seat support relative to the chair column. The connections to the elements fed from one of the feed lines are rotated with respect to the connections to the elements fed from the other to provide another phase difference between the elements. The drive control system has a first drive mode to drive the electric motor at a first power level, and a second drive mode, activated upon receiving an indication from the detector that the cleaner is in the second position, to drive the electric motor at a second power level that is greater than the first power level.