Great Plains NP3000A Operator Manual - Manual (Page 101)

2014-04-22 Table of Contents Index 407-613M
Great Plains Manufacturing, Inc. Table of Contents Index 97
Troubleshooting
General Applicator Troubleshooting.............................97
NH3 Metering System Troubleshooting .......................98
General Application Troubleshooting .........................100
Ground Drive Pump Troubleshooting.........................102
Hydraulic Drive Pump Troubleshooting......................103
The topics in this section presume that the applicator has
a Raven SCS 450 console, Raven AccuFlow™ metering
system, and CDS-John Blue
® Impellicone ® flow divider.
If also equipped with conventional liquid capability, the
topics in this section presume that the applicator is
equipped with a CDS-John Blue
® pump and ground
drive, or a hydraulic pump and Raven SCS 450 console.
Troubleshooting sections are also found in the following
component manuals:
016-0159-403
Raven AccuFlow™ Operator manual
016-0159-831
Raven SCS-450 Installation, Operation and Service
manual
12-M-43
CDS-John Blue NGP Pump Parts and Instructional
manual
General Applicator Troubleshooting
Problem Cause Solution
Fold or unfold jerky or
imbalanced Air in lines Bleed fold/lift circuit (page 123).
Lift jerky or imbalanced Air in lines Bleed fold/lift circuit (page 122).
Lift-Assist casters
oscillating Caster stabilizer too lightly set Increase spring tension on caster
stabilizer piston (page 130).
Uneven application
depth Excessive field speed. Reduce field speed.
Coulters set too deep, lifting entire applicator Reduce coulter depth.
Rough application conditions Rework the field.
Worn tines inadequately preparing trench Replace worn tines.
Wings too Shallow Insufficient weight transferred to wings Increase weight transfer (page 85).
Center too Shallow Excess weight transferred to wings Decrease weight transfer (page 85).
Sealers not compacting
the soil as desired. Sealer adjustment not optimal. Adjust sealer (page 80).
Not level front to rear. Check applicator front-to-back level
(page 43).
Too wet or cloddy Wait until drier weather or rework
ground.
2-Point Lift-Assist slow Adjustment valve not fully open. Open valve (page 161).