Great Plains NTA2007 Material Rate - Manual (Page 35)

Great Plains Manufacturing, Inc. Contents Appendix Liquid Fertilizer Rates 33
2012-01-03 Contents Appendix 167-085B
Strainer
Refer to Figure 15
A Banjo brand strainer is supplied with the ground drive
fertilizer pump. It is plumbed before the Hypro pump. The
standard 80 mesh screen
should be suitable for most
applications. Other sizes are available from Banjo.
If changing screen sizes, keep in mind the following.
• A smaller mesh (100) will keep very small manifold
orifice plates from plugging so often. However, the
screen will have to be cleaned more often.
• A larger mesh (50) or (30) will pass more material but
should only be considered when using large manifold
orifice plates.
• A plugged or partially plugged screen will starve the
pump resulting in a reduced application rate.
• Mesh sizes: (Smallest) 100, 80, 50, 30 (Largest)
Setting Relief Valve
Refer to Figure 16
A relief valve
and pressure gauge is mounted at
front centre of cart on models NTA607/2007/HD.
The relief valve protects the manifold, lines and fittings
from excessive pressure. Any product that passes the
relief valve will discharge from the dump line
in relative
safety.
To set the relief valve:
1. Unlock plastic jam nut from relief valve knob.
2. Unscrew knob clockwise (looking down) until it
loses contact with internal spring.
3. Screw knob counter clockwise two turns.
Start at this setting.
4. Observe manifold gauge and watch for relief valve
dump line discharge while operating in the field.
5. If valve is dumping product and gauge reads under
65 psi, stop tractor and turn knob
clockwise
1 ⁄
4
turn. Continue operating at normal field speed.
Repeat this step as needed until no product is
discharged from relief valve dump line
.
6. If the pressure gauge reads above 65 psi, change to
a larger orifice. Go to step 2 and repeat.
Agricultural Chemical Hazard:
Wear protective gloves when changing strainer screens.
Consult material manufacturer or supplier documents for
proper handling and steps to take if skin contact occurs.
Figure 15
Strainer
18418
1
1
2 3
4
Figure 16
Fertilizer Relief Valve
31017
2
3
4
5
6
5
6
6
3
4
6
4