How much water or coolant should be flowing through the instrument during a run?

The XT instrument’s flowmeter should have a flow rate between 4-6 gallons per hour (If chilled coolant is used then the flow rate should be 2-3 gallons per hour). Note that this flow is intermittent and only turns on when cooling is required. When the instrument is not operating, no water should be flowing. If there is any water flowing out of the drain, water valves Q1, Q2, or Q3 need to be serviced.