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6 - Maintenance
Service and Maintenance Intervals
General Info
National 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 in
doubt. If this work is completed correctly, the sprayer will run efficiently and its lifetime will be prolonged.
Periodic Inspection
According to EU Directive 2009/128/EC regarding sustainable use of pesticides, all countries in the European Union are
obliged 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 of
spray liquid on the plants, as well as minimizing leaks into the environment. The inspection on your sprayer may involve
testing the condition of the pump, PTO, tanks, liquid system, measuring components, spray boom, nozzles, agitation of spray
liquid, filters, pipes and hoses.
The interval for inspection in some countries are once before the end of 2016 and then every 3 years.
The inspection and testing is carried out by an authorized person, who is not the owner nor the operator of the sprayer. With
a positive result, a certificate or test sticker will then show that the inspected sprayer is approved for future use. With a
negative result, the faults must be rectified to get the approval.
Check your national rules and guidelines for requirements included in this inspection. For more information on how to
approach this inspection, please contact your local HARDI dealer.
Tightening Bolts and Nuts
When tightening bolts and nuts as a part of periodic service or due to replacement of spare parts, it is important to apply
the 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.
Bolt size
Recommended torque (Nm) Maximum torque (Nm)
M4
2.4
M5
5
M6
8
M8
20
M10
39
M12
70
M14
112
M16
180
M18
240
M20
350
M22
490
M24
600
M27
976
M30
1300
±
WARNING! Applying too little torque will result in these risks:
• bolted joints will rattle and thus fail under fatigue
• bolts are being worn quickly and thus will not fulfil their design purpose
• bolted joints will come loose
• accidents caused by assembled parts coming apart due to bolts or nuts failing or falling off.
±
WARNING! Exceeding the maximum torque will result in these risks:
• damaging or stripping the threads and deforming the fastener
• bolt heads will be broken
• bolted joints will come loose
• accidents caused by assembled parts coming apart due to bolts breaking at a later time.
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3
6
10
25
50
85
140
215
305
435
590
750
1100
1495
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