My KH director did not take a sample at my prescribed time. So I manually started a measurement.....I heard an alarm coming either from my doser 2.1 or the KH director (loud one). I went to look and found that the water supply (pump #1) was stopped. I stopped the calibration and I started the vent and flush procedure. Vent went fine and then started the flush, after about 30-60 seconds, while watching pump #1, the alarm sounded as soon as the pump stopped. Please help!