Great Plains YP40F Operator Manual - Manual (Page 37)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 33
2013-03-25 Table of Contents Index 403-362M
This table covers possible issues specific to the
YP24/YP40 DF/seeder feature.
See also the Troubleshooting section of the 401-406M or
401-571M Operator manual.
Seeding Troubleshooting
Problem Cause Solution
Seed Hoses Plugging Insufficient airflow to operate both
fertilizer and seed delivery systems. Increase fan speed (page 19).
If already at 3800 rpm, open seed-leg butterfly
valve (page 19).
Air leaks Check:
hopper lid,
hopper base to airbox seal,
clean-out door seal and
delivery hoses.
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).
No Seed Flow (all rows) Material run-out. Re-load seed. Re-check rate setting and level
sensor function if run-out was unexpected.
Bridging in seed hopper due to
material consistency Clean-out and replace material. See page 35.
Butterfly valve closed at seed leg Check setting of valve. Tighten bolt.
Planting Rate Low
(single row) Airbox outlet plugged. Clean-out hopper (page 35).
Inspect manifold outlet area.