Air Blast Sprayer Pre-Calibration Instructions

Prior to having Penn State calibrate your air blast sprayer, please complete the following tasks:

• Triple rinse tank and piping. Take special care to flush manifolds and nozzles.
• Pressure wash sprayers. Pay special attention to cleaning both sides of nozzles and around pump and filters.
• Clean nozzles and record orifice and whirl disc sizes.
• Flush out line to pressure gauge.
• Clean filters, including: tank filters, suction filters, final filters, and every screen behind nozzles.
• Make sure all valves, diaphragms, and O-rings are in good condition and working properly.
• Check tire pressures on both sprayer and tractor.
• Make sure tachometer is working on tractor.
• Measure and mark off a 200 foot straight “course" that can be used to time tractor speed to determine actual MPH.
• Fill sprayer ½ full with clean water.
• Have sprayer operator's manual on hand for reference if needed.

If possible, have any operators or mechanics that work with the sprayer/ tractor combination on hand for the sprayer calibration.

Visit Penn State Extension's information page to learn more about our sprayer calibration service.