Great Plains NTA2007 Operator Manual - Manual (Page 116)

112 NTA607 or NTA2007 Table of Contents Index Great Plains Manufacturing, Inc.
166-372M Table of Contents Index 2012-01-05
Fertilizer System Maintenance
With proper attention to maintenance, end of day clean-
out, end of season clean-out and winterization, you can
substantially increase the life and reliability of your liquid
fertilizer system. Protect the pump, clean the tanks,
strainers, lines and nozzles, and you can avoid costly
and time-consuming repairs at the next season.
Fertilizers are usually highly corrosive to metals other
than stainless steel. Suspension fertilizers can clog
system components in storage.
1. Flush entire system with clean water.
2. Remove end caps from booms and flush booms out
with water. Drain and replace end caps.
3. Remove strainer and drain it out. Drain all lines and
tanks completely to prevent freezing damage.
4. Flush pump per pump supplier manual. Fill pump
with RV antifreeze and cap off.
5. Wash all spilled fertilizer off the drill.
Liquid Fertilizer Strainer
Refer to Figure 93
The fertilizer system uses an in-line strainer to keep
damaging particulates out of the pump. The strainer
becomes clogged over time, reducing pump rate. Plan to
clean the strainer several times per season. Don’t wait
for application rates to fall below target. Higher quality
liquid fertilizers may require less frequent cleaning.
Disassemble and clean the strainer prior to storage to
prevent caking.
In Season Filter Cleaning
1.
Shut off the ball valve at the filter.
2. Unscrew and remove the bottom canister . It is
generally not necessary to remove the plug ,
although doing so may ease cleaning of the canister.
Make sure the plug is tight when re-installing.
3. Wash the filter cartridge with water, or replace
with new cartridge if necessary. Inspect the screen
and O-rings
for damage. A new cartridge includes
(cartridge) O-rings
4. Inspect the large O-ring on the canister. Replace
as necessary.
5. Reinstall the cartridge, canister. Turn on ball valve.
End of Season Filter Cleaning
1.
Load 40 to 60 litres (10 to 15 gallons) of clean water
in each supply tank.
2. Pump most of it through the system. If doing this by
hand-turning the ground drive wheel, first install the
largest drop-line orifice size, and set the pump
adjuster to maximum, to increase flow.
3. With valves open, remove the canister. Clean
strainer and canister.
4. Drain tanks and lines. Remove boom end-caps to
drain wings.
5. Re-install strainer and canister.
6. Add 1 litre (2 pints) of RV antifreeze to each tank.
Pump until tank is just empty (which leaves some
fluid in strainer).
7. Open supply line above pump inlet. Introduce RV
antifreeze, and operate pump until pump is filled.
Possible Chemical Hazard:
Wear proper protective equipment as required by chemical
supplier. Avoid prolonged breathing of chemical fumes. Wear
respirator as required by chemical manufacturer. Some
chemicals will cause serious burns, lung damage, and death.
Avoid contact with skin or eyes. Seek medical assistance
immediately if accident occurs. Know what to do in case of an
accident.
Equipment Damage Risk:
Do not leave fertilizer or fertilizer residue in pump. Do not
allow air to enter pump. Even for short periods, air in pump
causes RAPID and SEVERE CORROSION.
Figure 93
In-line Strainer
31322
1
2
3
4
5
1
2
3
4
5