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System Discharge
These steps are for clearing an applicator for service or
for storage near untrained persons. These instructions
presume that you have followed the steps at:
“NH3: Stopping Application” on page 70,
and the nurse tank is unhitched, per:
“NH3: Final Nurse Tank Unhitch” on page 73.
For a breakaway event, follow the instructions on
page 71 up through breakaway re-connection. Then
perform a normal shutdown (other than nurse tank
steps), per page 70.
The challenges in system discharge are:
•NH
3
liquid can remain in the system after the
recommended stopping procedures.
•NH
3
liquid self-cools as it evaporates, slowing
evaporation. It can take a long time for all of it to turn to
vapor, particularly in cooler weather.
• Once there is only vapor in the system, there is usually
little gas movement to drive the rest of it out.
• The delivery tubing loops are usually the last to clear,
and may not fully clear. See sidebar.
Even if no ammonium hydroxide forms, the NH
3
vapor in
the system dilutes slowly with air. Harmless trace
amounts, noticed as occasional odor, may remain
indefinitely.
Normal Discharge
At the completion of stopping application and nurse tank
unhitching, all line valves are closed and all bleed valves
are open, and have been that way for at least an hour.
Transport may also have occurred, which aids clearing.
1. Verify that all line valves are closed, and all bleed
valves open. If this is not the case, there is risk of
trapped ammonia. See “Clearing a Line Trap” on
page 116.
2. Carefully walk down-wind of the applicator. Check for
ammonia odor. If pungent, there is at least some
pure NH
3
vapor in the system, and possibly some
liquid. Give the applicator some time to vent.
If there is no, or only mild odor, check the delivery
loops for visible fluid. If only a few hours have
elapsed since application ended, this liquid is pure
NH
3
. Stay away until it has vaporized.
3. From up-wind, check all the fittings and lines. If any
are cold (more than a few degrees below ambient
temperature), liquid evaporation is still in progress or
has only recently completed. Give the applicator
more time to vent.
Steps continue on next page...
Suffocation, Blinding, Burning, Freezing, Disabling and
Disfigurement Hazards:
Do not perform maintenance with anhydrous ammonia in the
system. Fully discharge the system of NH
3
liquid and vapor
before working on the applicator.
The delivery tubes are open to the atmosphere at the
tines. When they don’t clear immediately, they are likely
to absorb atmospheric moisture, forming ammonium
hydroxide (NH
4
OH) in the tubes. This liquid is highly
caustic, and can persist for weeks or months, but
remains liquid at ambient temperatures, is harmless to
the tubing, and emits ammonia vapor slowly. If there is
liquid in the tubes, and it is not cold, it is likely to be an
NH
4
OH solution, and not pure NH
3
.
Figure 79
Delivery Loops
34983
- Operator Manual 1
- Table of Contents 3
- Important Safety Information 5
- Look for Safety Symbol 6
- Be Aware of Signal Words 6
- Prepare for Emergencies 6
- Use Safety Chains 8
- Avoid High Pressure Fluids 8
- Minimize Radiation Exposure 8
- Keep Riders Off Machinery 8
- Use Safety Lights and Devices 9
- Tires Not a Step 9
- Transport Machinery Safely 10
- Shutdown and Storage 11
- Handle Chemicals Properly 11
- Tire Safety 12
- Practice Safe Maintenance 12
- Safety At All Times 12
- Safety Decals 13
- 818-323C 15
- 818-590C 15
- Danger: Hitch Crush 15
- 848-801C 20
- 848-539C 21
- Introduction 22
- Using This Manual 23
- Owner Assistance 24
- Application Overview 25
- A35 A39 A40 26
- Figure 5 32
- Figure 6 33
- Nutri-Pro 37
- Rear Hitch (Option) 37
- Figure 7 38
- Trailing Nurse Tank Hitch 38
- Preparation and Setup 39
- NP4000A: Get Expert Advice 40
- Pre-Application Setup 40
- 2-Point Hitching 41
- Hydraulic Hose Hookup 45
- Date Code 46
- Motor Model (206N) 46
- Inlet Port 46
- Outlet Port 46
- Leveling Applicator 47
- Wash Water (NP4000A) 51
- Sealer Setup (NP4000A) 51
- Operating Instructions 52
- Fold/Lift Circuit 53
- FOLD / FIELD Switch 53
- Applicator Locks 54
- Raising/Lowering Applicator 55
- Unfolding and Folding 60
- Transport 63
- Final Applicator Setup 64
- Operations 65
- : Pass Planning 70
- Liquid Operations 78
- Liq: Hydraulic Drive Start-Up 81
- Liq: Pauses and Turns 81
- Suspending Application 83
- Liq: Stopping Application 83
- Field Set-Up Checklists 84
- Checklist (Cart Hitched) 85
- Plumbing Checklist Page 85
- Field Operation Checklists 86
- Short-Term Parking 88
- Long-Term Storage 88
- Adjustments 89
- Row Adjustments 90
- Handle Slot Down-Pressure 91
- Tool Bar Height Adjustment 95
- Weight Transfer Adjustment 96
- NUTRI-PRO 97
- Caster Angle Adjustment 98
- Fertilizer Rates 99
- NP4000-1630 Fertilizer Rate 100
- NP4000B-1238 Fertilizer Rate 102
- NP4000B-1240 Fertilizer Rate 103
- Strainer Adjustment 106
- Flow-Based Adjustment 109
- Dead-Head Adjustment 109
- Troubleshooting 110
- FOLD / FIELD Troubleshooting 111
- Maintenance and Lubrication 119
- Avoid Trapped Anhydrous 120
- Avoid Ball Traps 121
- System Discharge 122
- Clearing Plugged Tines 124
- Valve Replacement 127
- Replacement Log 128
- Refrigerant Line 129
- Row Delivery Tubing 130
- Row Vapor Tubing 130
- Metering System Maintenance 131
- Material Clean-Out (Liquid) 132
- Pump Maintenance and Repair 134
- Coulter Disc Replacement 134
- Coulter Spring Setting 135
- Hydraulic Maintenance 136
- Bleeding Fold Hydraulics 137
- Wing Leveling 140
- Rear Eyebolt Adjustment 140
- Caster Brake Adjustment 141
- Chain Maintenance (Option) 142
- Inner Wing Pivots 143
- Outer Wing Pivots 143
- Caster Pivots 143
- Lift- Assist Parallel Arms 144
- Fertilizer Pump Crankshaft 145
- Tire Pressures 145
- As Required 146
- Seasonal 146
- Sub-frame and Tank Selection 148
- Category II Hitch Pin Kit 148
- Rear Hitches 149
- Nurse Tank Light Harness 150
- Row Cleaners 150
- Terra-Tine™ Row Cleaners 150
- Coulters, Blades and Tines 151
- Vantage I Attachment Kits 152
- Coulter Nozzles 152
- Speed Sensor Cable 153
- Speed Sensor 153
- Manifolds and Accessories 154
- Liquid Fertilizer Pumps 155
- Side Dress Extensions 156
- Weight Kit 157
- Specifications and Capacities 158
- Dimensions 161
- Torque Values Chart 163
- Tire Inflation Chart 163
- Plumbing Diagrams 164
- Chain Routing (Option) 172
- Controller System Diagrams 173
- GP: 823-422C 174
- Hydraulic Pump Controller 175
- Hydraulic Diagrams 176
- Pump Hydraulics (Option) 179
- Component Replacement Dates 180
- Post-Delivery Checklist 180
- Lift-Assist Valve Setup 181
- Hydraulic Pump Setup 182
- Console Installation 183
- Side Dress Installation 184
- Refer to Figure 103 186
- 803-027C NUT HEX 3/4-10 PLT 188
- 990-259R EVA TUBING 3/8 ID 189
- Weight Kit Installation 191
- Warranty 192
- Table of Contents Index 199
- Salina, Kansas 67402-5060 USA 200
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