Great Plains YP825AR Operator Manual User Manual
Page 96
92
YP825AR
Great Plains Manufacturing, Inc.
401-923M
2014-06-17
Marker disk
does not
mark
Disk angle too straight for soil
conditions
Reverse marker disk to pull or throw dirt.
Speed
Reading
Doesn’t
Match
Tractor
Monitor speed reading, using
optional implement-mounted radar,
will only match tractor with planter
lowered.
(Speed reading with magnetic
pickup falls to zero when lifted.)
If speeds don’t agree during planting (with planter lowered),
re-calibrate radar speed sensor with planter lowered.
Liquid Fertilizer Troubleshooting
Problem
Cause
Solution
No Fertilizer
Flow
Various possible pump issues
Refer to Trouble Chart in CDS-John Blue
®
LM-1250/
LM-1255 Parts and Instruction manual, part number
12-M-15.
Discharge and/or main selector
valve closed
Check that discharge valves are open to selector valve, and
selector valve is open to pump. See “Liquid Fertilizer
Operation (Option)” on page 44
Chain missing at one or more
drive stages
Check all five chains from ground drive to pump. See “Chain
Routing” on page 145.
Tank plugged
Dilute or clean out any material clogging discharge port. See
“Liquid Fertilizer Clean-Out” on page 98.
Strainer plugged
Close all valves. Inspect strainer (See Seed and Fertilizer
Rate manual (401-923B)). Clean screen as needed. Switch
to a larger screen size if materials clog strainer rapidly (and
large size orifices are in use).
Pump setting at or near zero
Recommended pump adjuster settings are in the range
2 to 10. See Seed and Fertilizer Rate manual (401-923B).
Material run-out
Check tank level.
Material merely low - loss of prime Add material. When tank level is below pump inlet level, any
air allowed in the line can cause the pump to lose prime.
Air in pump due to slope (two-tank
system)
Add material, meter from one tank at a time, or close empty
tank. When planting across a slope, material can flow from
one tank to the other. If an empty tank is open to the pump,
the pump will cavitate and not meter fertilizer.
Low Rate
Fertilizer transmission in Low
Range when High Range was
intended.
Swap sprockets at transmission. See Seed and Fertilizer
Rate manual (401-923B).
Various possible pump issues
General Troubleshooting
Problem
Cause
Solution