Hardi Navigator 550M Operator's Manual

Also see for Navigator 550M: Operator's manual Operator's manual

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Hardi Navigator 550M Operator's Manual Manual pdf 40 page image

38 HARDI® NAVIGATOR 550M, 800M, 1000M CENTRIFUGAL OPERATOR'S MANUAL4.15 CalibrationWARNING: ALWAYS CALIBRATE YOUR SPRAYER WITH CLEANWATER ONLY! IN ADDITION, WEAR PROTECTIVECLOTHING WHEN CALIBRATING YOUR SPRAYER!Why must you calibrate a sprayer?A nozzle selection chart will tell you what application rate you shouldexpect. Variations due to nozzle wear, errors in pressure adjustment, andtractor speedometer can result in a possible error in application rate.How do you calibrate a sprayer?Calibration kits are available from HARDI®, #818493 for US gallons &#818492 for metric calibration.Following are some tips to remember when using the calibration kitmethod:• When determining the length of time required to drive the recommendeddistance, drive in actual field conditions with a half-full tank.• Repeat the test several times, each time avoiding the tracks from theprevious test. Take the average of the times recorded.• Calibration of the sprayer should be completed at the beginning of theseason and repeated after every 2 to 3 full days of spraying, and everytime you change volume rate or use new nozzles.• Before you calibrate, check the flow of each nozzle. If it puts out morethan 10% of its original volume, replace it.Select your calibration method: Ounce method or Formula method.Then follow the steps described in the corresponding section(s):