Fault Finding; Operational Problems; General Info - Hardi NAVIGATOR 3000 Operator's Manual

Operational problems

General Info

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DANGER! Specialized persons should be involved in fault finding, as this is hazardous work! It might be necessary to
have the sprayer operating to complete the fault finding.
Operational incidents are often due to the same reasons:
• A suction leakage reduces the pump pressure and may interrupt suction completely.
• A clogged suction filter may hinder or interrupt suction and prevent the pump from running normally.
• A clogged pressure filter increases pressure in the fluid system before the filter, but decreases pressure at the nozzles.
This may blow the safety valve.
• Clogged in-line filters or nozzle filters increase pressure in the pressure gauge, but decreases pressure at the nozzles.
• Impurities sucked in by the pump may prevent the valves from closing correctly, thus reducing the pump flow.
• Poor reassembly of the pump, especially the diaphragm covers, allows air intakes or leaks and reduces the pump flow.
• Rusted or dirty hydraulic components cause bad connections and early wear.
• A poorly charged or faulty battery causes failure and misbehavior in the electrical system.
Therefore ALWAYS check that
• Suction, pressure and nozzle filters are clean.
• Hoses are free of leaks and cracks, particularly suction hoses.
• Gaskets and O-rings are present and in good condition.
• Pressure gauges are in good working order. Dosage accuracy depends on it.
• Operating unit functions properly. Use clean water to check.
• Hydraulic components are clean.
• The tractor battery and its connectors are in good condition.

7 - Fault finding

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