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Before the Winter <br />All good programs <br />include calibration. <br />If you don't <br />calibrate your <br />sander, the <br />application <br />rates will not be <br />accurate, <br />CALIBRATE YOUR EQUIPMENT <br />Calibration is an essential procedure to measure the pounds <br />of salt and sand applied to the roadway at various auger set- <br />tings in relation to truck speed. No matter how sophisticated <br />or simplified your operations, always calibrate yearly. <br />• Because spreaders vary, calibrate each truck. Re- calibra- <br />tion is required if changes are made to the hydraulic sys- <br />tem, if the augers have extensive wear or are resurfaced or <br />replaced, or a different material is used. <br />• Follow the manufacturer's guidelines for calibration, and <br />contact the manufacturer for training. For manual sander <br />controls, refer to instructions at www.mnitap.umn.edu <br />/publications or see the insert in the pocket of this hand- <br />book. <br />• Calibrate separately for salt /sand mix vs. salt or sand only. <br />• Remember: The auger plate must be in place during cali- <br />bration. You are not calibrating the truck properly if the <br />material is gravity- flowing. <br />• Place the chart in your truck and check it to see how much <br />material will be applied at each setting, or ask your super- <br />visor. <br />4 <br />• <br />r <br />