Great Plains NP4000B Operator Manual - Manual (Page 109)

Great Plains Manufacturing, Inc. Table of Contents Index Fertilizer Rates 105
2014-05-14 Table of Contents Index 417-199M
Hydraulic Drive: Pump Pressure
These steps presume an applicator with optional
on-board tanks and optional Raven SCS 450 console.
Flow-Based Adjustment
This adjustment verifies pump pressure, fertilizer flow
and boom pressure.
1. Fill tank(s) with water.
2. Verify that the drop line orifice plates are the correct
size for the intended application rate (see page 100).
3. Move applicator to a location where water and
residual material in system is harmless to soil.
4. Set hydraulic remote circuit for pump to Float.
Set flow rate to minimum.
5. Set tank discharge and selector valves to enable
material flow from tank(s) to the pump.
Refer to Figure 76
6.
Set the Console FLOW switch to MAN.
7. Set MASTER switch OFF.
8. Set the POWER switch to ON.
9. Verify that the BOOM CAL, SPEED CAL, METER
CAL, VALVE CAL, and RATE CALs have been
entered correctly into the console.
10. Press the SELF TEST button.
11. Enter the applicator’s expected field speed.
12. Turn MASTER switch and BOOMS 1,2&3 ON.
13. Start tractor. Move remote lever for pump to Retract.
14. Increase the circuit flow rate until the console
pressure reading is between 15 and 45 psi.
15. Operate the FLOW CONTROL switch to the INC
position until the RATE is about 35% higher
a
than the
intended field rate. Increase the hydraulic flow as
needed to keep the psi in the 15-to-45 range.
16. Reduce the RATE (via the DEC switch) to the
desired field rate. Verify that the pressure is still in
the 15-to-45 range.
17. Make a record of the flow rate setting for the
hydraulic circuit.
18. Set pump hydraulic circuit to FLOAT.
19. Set console switches:
MASTER to OFF.
FLOW switch to RATE 1.
Dead-Head Adjustment
This adjustment verifies only pump pressure, but is
quicker than the flow-based adjustment, and delivers no
material to the tines.
1. Fill tank(s) with water or fertilizer.
2. Set hydraulic remote circuit for pump to Float.
Set flow rate to minimum.
3. Set tank discharge and selector valves to enable
material flow from tank(s) to the pump.
4. Set the Console FLOW switch to MAN.
5. Set MASTER switch OFF.
6. Set the POWER switch to ON.
7. Push the FLOW CONTROL to the INC position and
hold it there for several seconds to open the valve.
8. Turn the MASTER switch ON and BOOMS 1,2&3
OFF.
9. Start tractor. Move remote circuit lever for pump to
Retract.
10. Increase the circuit flow rate until the console
pressure reading is 45 psi.
11. Make a record of the flow rate setting for the
hydraulic circuit.
12. Set pump hydraulic circuit to FLOAT.
13. Set console switches:
MASTER to OFF.
FLOW switch to RATE 1.
Figure 76
Typical Adjustment Display
32106
a. Hydraulic oil heating causes the pump performance to gradually decline by 30% over several hours. Setting the remote to have a 35%
excess capability assures that adequate flow will be available for the duration of application.