Patent ID: 8047817

Claim:
A method for managing deposits within a pump by introducing a fluid suitable for dissolving, diluting or otherwise disengaging deposits which have accumulated on internal working surfaces of the pump, the method comprising the steps of: (a) monitoring the performance of the pump; (b) receiving process data from, or directly associated with, a tool being evacuated by the pump, wherein the tool is configured to receive various gas streams for performing a chemical reaction to produce a predetermined material; (c) calculating fluid flow characteristics required to compensate for accumulation of deposits on the internal working surfaces of the pump caused by exhaust gases evacuated from the tool by the pump, based on the monitored performance of the pump and the process data of the tool; and (d) introducing fluid into the pump at a localized area via a predetermined port selected from a plurality of ports within the pump in accordance with the calculated fluid flow characteristics, thereby avoiding a backward contamination of the tool by the fluid.