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Fertilizer flow rate slow or stopped.
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Excessive drive tire slippage.
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Unit Mounted Single-Disk Injection Opener Only: Excessive fertilizer manifold pressure due to too small nozzle or plugged nozzles.
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Reduce row unit downforce, or check drive for misalignment or binding.
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Plugged nozzle.
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Unit Mounted Single-Disk Injection Opener Only: Clean nozzle.
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Plugged strainer.
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Clean strainer.
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Kinked delivery hose at wings or at row.
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Fix or replace hose.
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Not enough pressure in distribution manifold (Injection Coulter).
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Unit Mounted Single-Disk Injection Opener Only: Use smaller nozzle to raise manifold pressure. Add gauge to monitor pressure.
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Drive tire or contact tire pressure low.
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Inflate to proper pressure.
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Fertilizer rate uneven row to row. (Unit Mounted Double-Disk Fert. Opener or Frame Mounted Single-Disk [Low Pressure/Flow Divider Delivery] Only)
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Need 1 psi check valves for low rates with flow divider.
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Install check valves.
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Some fertilizer hoses may be pinched.
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Find a fix hoses.
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Fertilizer rate uneven row to row. (Unit Mounted Single-Disk Injection Opener [High Pressure/Manifold Delivery])
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Not enough pressure in distribution manifold.
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Use smaller nozzle to raise manifold pressure. Add gauge to monitor pressure.
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Nozzle plugged.
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Clean or replace.
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Nozzles of mixed sizes used.
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Use orifice or nozzle of same sizes.
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| Symptom |
Problem |
Solution |
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Fertilizer opener does not penetrate sufficiently.
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Improper adjustment of pressure.
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Move bolt to lower position.
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Fertilizer opener penetrates too deeply.
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Improper adjustment of pressure.
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Move bolt to upper position and adjust spring bolt.
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One fertilizer opener not distributing fertilizer.
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Check valve bad or installed in wrong direction.
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Replace or reassemble check valve.
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Fertilizer tube opener spout plugged.
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Inspect, clean and remove obstruction.
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Manifold pressure too low.
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Use smaller nozzles to increase pressure to between 138 kPa (1.3 bar)(20 psi)-483 kPa (4.8 bar)(70 psi). Add gauge to monitor pressure.
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Drive tire or contact tire pressure low.
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Inflate to proper pressure.
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Flow divider system hose pinched, preventing flow to opener.
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Reroute hose.
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