Patent ID: 8403647
Filing Date: 2013-03-26
Classification: F04B,F04D

Abstract:
1. A control device for controlling a shower waste pump, the device positioned at a distance from the pump which it is to control and comprising: a housing which is mountable to a supporting surface; an access opening within the housing covered by a press-fit removable cap; a first printed circuit board (PCB) located within the housing; a second PCB adjacent to the access opening; pump-setting means for manually adjusting and selectively setting maximum pumping capacity of the waste pump, the pump-setting means including a control circuit mounted on the first PCB for controlling voltage to the waste pump and a manually-operable voltage control element mounted on the second PCB for manually setting a maximum voltage at which the waste pump can be operated; over-run setting means for selectively setting an over-run period from a pre-determined range during which the waste pump continues to operate after fluid flow through the waste pump has ceased or substantially ceased, the over-run setting means including a timing circuit mounted on the first PCB for continuing operation of the waste pump during the over-run period and a manually-operable over-run setting control element mounted on the second PCB for manually setting the over-run period; the press-fit removable cap provides toolless access to the pump-setting means and the over-run setting control element, wherein the over-run setting means allows the over-run period to be manually set and infinitely adjusted over a given range and the over-run period set by the over-run setting means is, at least in part, determinable by the maximum pumping capacity of the waste pump set by the pump-setting means so as to optimize operation of the waste pump.