Great-plains PH-20 Operator Manual Manuel d'utilisateur télécharger pdf (Page 32)

Section 4 Troubleshooting

PH-15, PH-20, PFH-15 and PFH-20 Precision Fertilizer Hitch 148-365M 12/29/2011

Great Plains Mfg., Inc.

Section 4 Troubleshooting

Problem Solution

Fertilizer coulter plugging Fertilizer tine is running too deeply or is not aligned properly. Refer to

Adjusting Fertilizer Tines, “Adjustments,” page 25.

Fertilizer output rate too low

Check air pressure in fertilizer drive wheel. Refer to Tire Inﬂation Chart,

“Appendix,” page 40.

Check for plugging in fertilizer hoses, plumbing and pump strainer.

Check that you have installed the correct driver sprocket and set the pump

to the proper setting. Refer to Adjusting Fertilizer Application Rate, “Adjust-

ments,” page 23.

Consider soil conditions. Drive-wheel slippage can alter application rates.

Coulters not going deep enough

Retract tongue cylinder. Refer to Hydraulic Control, “Adjustments,” page 19.

Too much weight is being used by openers. Set drill openers to lightest

spring setting. Refer to your drill operator’s manual.

On models PH-15 and PH-20, add suitcase weights to hitch weight brackets.

Refer to Added Weight, “Adjustments,” page 19. NOTE: Do not add more

than 2000 pounds.

On models PFH-15 and PFH-20, do not run fertilizer tanks empty. Use weight

of liquid fertilizer to improve coulter penetration.

Shorten springs on individual coulters. Refer to Coulter Springs, “Adjust-

ments,” page 20.

Lower individual coulters to compensate for tire tracks. Refer to Coulter Mounting

Height, “Adjustments,” page 19.

Drill not tracking behind coulters. Check that coulters and drill openers are same distance from center of

implement.

Check that pivot lock tubes are rotating up while drilling. Make sure that

pivot lock tubes are not locked down. Refer to Pivot Lock Tubes, “Operating

Instructions,” page 16.

Check for proper leaf-spring adjustment. Leaf Spring Adjustment, “Adjust-

ments,” page 28.

Openers plugging in no-till conditions. Drill at a slight angle to the rows.

Drill is seeding too deeply.

Adjust level link so that drill will not tip back in seeding position. Refer to

Lock Plate, “Adjustments,” page 21.

Move press-wheel adjustment on openers to a shallower depth. Refer to

your drill operator’ manual.

Transport lift cylinders losing lift height Inspect for wear on clevis pin and bushings on rod end of cylinder.

Reading on manifold pressure gauge

above 85 psi or below 5 psi.

Use different oriﬁce plates. Refer to Oriﬁce Plates, “Adjustments,” page 24.

Reading on manifold pressure gauge

increases slowly over time.

Check for plugging at oriﬁce plate under quick cap or at nozzle behind

coulter blade.

Reading on manifold pressure gauge

drops suddenly.

Check for a disconnected hose in the manifold supply plumbing.

Check if tanks are empty.

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Great-plains PH-20 Operator Manual Manuel d'utilisateur Page 32

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