Hardi Navigator 3100, Руководство оператора

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85
7 - Fault finding
Operational Problems
General Info
Operational incidents are often due to the same reasons:
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A suction leakage reduces the pump pressure and may interrupt suction completely.
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A clogged suction filter may hinder or interrupt suction and prevent the pump from running normally.
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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.
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Clogged in-line filters or nozzle filters increase pressure in the pressure gauge, but decreases pressure at the nozzles.
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Impurities sucked in by the pump may prevent the valves from closing correctly, thus reducing the pump flow.
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Poor reassembly of the pump, especially the diaphragm covers, allows air intakes or leaks and reduces the pump flow.
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Rusted or dirty hydraulic components cause bad connections and early wear.
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A poorly charged or faulty battery causes failure and misbehavior in the electrical system.
Therefore ALWAYS check that
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Suction, pressure and nozzle filters are clean.
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Hoses are free of leaks and cracks, particularly suction hoses.
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Gaskets and O-rings are present and in good condition.
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Pressure gauges are in good working order. Dosage accuracy depends on it.
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Operating unit functions properly. Use clean water to check.
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Hydraulic components are clean.
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The tractor battery and its connectors are in good condition.