Troubleshooting – Great Plains YP40F Operator Manual User Manual
Page 35
2013-03-25
403-362M
Great Plains Manufacturing, Inc.
31
Troubleshooting
The tables of this section cover possible issues specific
to the YP24/YP40 DF/seeder feature.
See also the Troubleshooting section of the 401-406M or
401-571M Operator manual.
Dry Fertilizer Troubleshooting
Problem
Cause
Solution
Delivery Hoses
Plugging
Insufficient airflow to operate both
fertilizer and seed delivery systems.
Increase fan speed (page 19).
If already at 3800 rpm, open fertilizer-leg
butterfly valve (page 19).
Fan circuit running in reverse
Check and re-connect circuit hoses (see
401-406M or 401-571M Operator manual).
Fan won’t run fast enough at
maximum tractor circuit setting
Check butterfly valves. Notes that tractor must
be able to supply 18 gallons/minute at 200 psi.
Fan speed low on capable tractor.
Hydraulic fan check valve is installed
backwards
Reverse installation of check valve (see
401-406M or 401-571M Operator manual).
Air leaks
Check:
hopper lid,
hopper base to airbox seal,
clean-out and calibration door seals and
delivery hoses.
No Fertilizer Flow
(all rows)
False-positive blockage detection.
Some fine materials and/or low rates,
may cause the monitor to report
blockage.
Shut off monitoring for fertilizer rows.
Gearbox set to zero
Set and calibrate gearbox (page 24).
Gearbox at zero, even though not set
to zero.
Check that gearbox indicator arm is pinned to
adjuster shaft.
Drive chain broken or skipping
Check chain condition and slack (page 39).
Material run-out.
Re-load fertilizer. Re-check rate setting and
level sensor function if run-out was
unexpected.
Bridging in fertilizer hopper due to air
leak
Inspect seal under lid. Replace as necessary.
Check that hook and shackle have not become
mis-adjusted.
Bridging in fertilizer hopper due to
material consistency
Clean-out and replace material. See page 35.
Meter box completely plugged.
Clean-out hopper and meter. See page 36.
Butterfly valve closed at fertilizer leg
Check setting of valve. Tighten bolt.
No Fertilizer Flow
(some rows)
Blockage inside tower.
Remove cap. Clear blockage.