Fault Finding; Operational Problems; General Info - Hardi Navigator 3100 Operator's Manual

Operational Problems

General Info

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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