Pump Prime and Initial Start Up

IMPORTANT: Avoid pump damage. Install vent plug (A) in pump crankcase. If pump has been removed from machine, remove solid plug in pump crankcase and replace with vent plug.

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A - Vent Plug

B - Weep Hole

C - Lubrication Fitting

D - Oil Check and Fill Plug

It is normal for a small amount of oil to leak from weep hole (B). The weep hole must remain open. Inspect at the beginning of each season. Too much grease at lubrication fitting (C) increases the chance of weep hole plugging or leaking grease.

Priming the fertilizer system is critical to obtain best performance, especially at application rates below 94 L per hectare (10 gal.) per acre with low-pressure systems. An improperly primed fertilizer system has the potential to trap large air bubbles in the distribution hoses. Trapped air interferes with fertilizer flow and increases row to row variation.

Before priming, inspect fertilizer distribution system. Ensure that filter screen is clean and that there are no leaks in the pump suction line. Ensure there are no pinched, kinked, or otherwise restricted hoses. Ensure there are no extreme high or low variations in the path of hose. Ensure all 7 kPa (0.07 bar) (1 psi) check valves are free of debris and blockage.

  1. Open shutoff valve at tank and strainer.

  2. Set pump to maximum rate.

  3. Partially fill tank with water and check system for leaks.

  4. Lower machine to planting position and drive 90-180 meters (100-200 yards) at planting speed.

  5. Check all distribution hoses for large air bubbles. Air bubbles prevent even application. Repeat steps 3 and 4 until all air bubbles are flushed from distribution hoses.

  6. Remove strainer screen and check for foreign material. Clean if necessary.

  7. Select fertilizer rate from rate chart. Set pump range and output.

  8. If machine sits stationary for a long period, check distribution hoses for air bubbles and prime system as necessary.

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