Manual No. 016-0159-831 45Preventative Maintenance & Troubleshooting7Recalibrating the Flow MeterNote: This procedure should be performed when the tank is filled with water, not chemicals.1. Enter a METER CAL value of 10 [38] into the console.2. Enter a TOTAL VOLUME value of 0 into the console.3. Turn OFF all booms.4. Remove a boom hose and place it into a calibrated 5 gallon [19 liter] container.5. Turn ON the boom switch for the boom hose that was removed.6. Turn ON the Master switch and pump exactly 10 gallons [38 liters] of water. The TOTAL VOLUME readoutis the new METER CAL number. This number should be within +/- 3% of the calibration number stamped onthe tag of the flow meter.7. Zero out the TOTAL VOLUME value and repeat the procedure several times to verify the accuracy of thenew METER CAL value.8. Verify the flow meter calibration.a. Fill the tank with a predetermined amount of measured liquid (e.g., 250 gallons).Important: Do not rely on the graduation numbers molded into the applicator tank - measure the liquid.b. Empty the tank under normal operating conditions.c. Check the TANK VOLUME value. If the number displayed is different from the predetermined amountof measured liquid by more than +/- 3%, perform the following calculation:For Example:9. Enter the adjusted METER CAL value before resuming application.METER CAL x TOTAL VOLUME = Adjusted METER CAL valuePredetermined amount of measured liquidMETER CAL Value = 720 [190]TOTAL VOLUME Value = 260 [984]Predetermined amount of measured liquid = 250 [946]720 x 260 = 749 (English)250[190] x [984] = 198 (metric)[946]