Patent ID: 7572107

Claim:
A method for calibrating a pump in a closed system, the method comprising: providing a pump in communication with a storage receptacle, a nozzle, a transparent calibration tank, and a valve manifold having a plurality of diverter valves; de-energizing a first diverter valve for establishing a positive liquid flow from said storage receptacle to said pump, through said first diverter valve and then back to said storage receptacle; de-energizing a second diverter valve for diverting said positive liquid flow from said pump to said transparent calibration tank thereby defining a liquid volume therein; maintaining said positive liquid flow to said transparent calibration tank for a time period; energizing said second diverter valve for diverting said positive liquid flow from said pump to said storage receptacle at the end of said time period; reading said liquid volume defined in and visually recognizable through said transparent calibration tank; recording said liquid volume into a user interface; and de-energizing a third diverter valve for diverting said liquid volume from said transparent calibration tank to said pump.