TM 5-3895-374-10ItemProcedure4The control panel is now in the operation mode.5Select Power key to the OFF position.2-11 CalibrationThe Asphalt Mixing Plant must be calibrated after movement of the plant. The operator must be familiar with section 2-9before proceeding with calibration.Preventative Maintenance Checks and Service must be performed before operating the Asphalt Mixing Plant. Completethe "after" Movement PMCS and the "before" Operation PMCS. See section 3-4.The aggregate scale and blending controller are both supplied by Systems Equipment Corporation. Additional calibrationinformation can be obtained by reading appendix F. The Asphalt Mixing Plant requires calibration to assure thecomponents are in fact feeding the amount of product being displayed on the control panel. The two items that require thisare the Asphalt Metering Pump and the Aggregate Scale. These two components control the blend of the hot mix.Calibration is required and/or recommended as follows:1.After movement of the plant.2.When:-raw materiels change-aggregate source changes.-asphalt cement source changes.-type of aggregate changes.-type of asphalt cement changes.3.When hot mix testing repeatedly indicates a discrepancy between the test results and the plant controls.4.When truck scale weighing of product indicates a significant difference in the total production than is indicated bythe controls.page 2-86
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