6 - Maintenance124Service and Maintenance IntervalsGeneral InfoNational or regional laws may require periodic inspection of the sprayers in use. See the following section for more details.The subsequent periodic service and maintenance work may be carried out by the user. Contact your HARDI dealer if indoubt. If this work is completed correctly, the sprayer will run efficiently and its lifetime will be prolonged.When a number of hours are mentioned in this chapter, this means hours of spraying, unless otherwise explained. Operationhours can be read in the controller in the tractor (see instruction book for controller).Periodic InspectionAccording to EU Directive 2009/128/EC regarding sustainable use of pesticides, all countries in the European Union areobliged to inspect sprayers used for plant protection. This mandatory inspection also includes your HARDI sprayer.The condition of the sprayer must be verified. The object of the inspection is to ensure a safe and uniform distribution ofspray liquid on the plants, as well as minimizing leaks into the environment. The inspection on your sprayer may involvetesting the condition of the pump, PTO, tanks, liquid system, measuring components, spray boom, nozzles, agitation of sprayliquid, filters, pipes and hoses.The inspection and testing is carried out by an authorized person, who is not the owner nor the operator of the sprayer. Witha positive result, a certificate or test sticker will then show that the inspected sprayer is approved for future use. With anegative result, the faults must be rectified to get the approval.Check your national rules and guidelines for requirements included in this inspection as well as the interval betweeninspections. For more information on how to approach this inspection, please contact your local HARDI dealer.Tightening Bolts and NutsWhen tightening bolts and nuts as a part of periodic service or due to replacement of spare parts, it is important to applythe correct torque. This will prevent accidents and prolong the lifetime of the parts included in the bolted joints.If not otherwise stated in this book, please tighten bolts and nuts using the following torques.*Exceeding this value results in a great risk of deforming the bolt.Material: Surface treated steel Material: Stainless steelBolt size(metric)Recommendedtorque (Nm)Maximum torque(Nm)*Bolt size(metric)Recommendedtorque (Nm)Maximum torque(Nm)*M4 2.4 3 M4 1.7 2.1M5 5 6 M5 3.5 4.2M6 8 10 M6 5.6 7.0M8 20 25 M8 14 17.5M10 39 50 M10 27 35M12 70 85 M12 49 60M14 112 140 M14 78 98M16 180 215 M16 126 151M18 240 305 M18 168 214M20 350 435 M20 245 305M22 490 590 M22 343 413M24 600 750 M24 420 525M27 976 1100 M27 683 770M30 1300 1495 M30 910 1047