Xylem YSI 2500 - Page 48

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6.2.2.4 Controls
Buffer Pump
Touch the [ON] button under B1 pump. The buffer pump will run. Touch the [OFF] button to stop the pump.
Calibrator Pump
Touch the [ON] button under Cal 1A Pump. The calibrator pump will run.
Touch the [OFF] button under the pump to stop it.