SPECIAL AIR SERVICES

Aerial Application Agricultural System

Assembly & Installation Manual

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TABLE OF CONTENTS

Introduction Pg. 3

Parts List Pg. 7

Assembly Procedures and Installation Pg. 9

Flight & Application Procedures Pg. 25

Appendix 1: Hydraulic Schematic Pg. 27

Appendix 2: Electrical Schematic Pg. 28

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INTRODUCTION

Note: The use of Aerial Application of Agricultural Chemicals is an areathat is very delicate and dangerous if not handled correctly. It is theexclusive responsibility of the operator of the equipment and not of themanufacturer of the equipment to install, maintain and operate the systemwhile insuring all safeguards are adhered to. Properly installed andoperated equipment will provide ample benefits to the owner of theequipment, the operator and the environment. The consequences ofimproperly operated equipment and/or improper use of chemicals aredetrimental to both the operator and the environment. This requires thatthe operator take all precautions to protect ones sight and avoidrespiratory and skin exposure and follow all recommendations of thechemical manufacturers Material Safety Data Sheets (MSDS).

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BASIC USE AND DESIGN CRITERIA

The Aerial Application Agricultural Spray System is a culmination ofmore than 20 years of development of Controlled Droplet Application(CDA) technology by such AG companies as Broyhill, Micronair,Aerolites and others. We have, after years of use in the field, taken thesystem to the next generation with new pump combinations and sprayheads designed to be more reliable. First used on Quicksilver’s Ultralightin 1982, the technology and the results obtained by it leave no questionthat low and ultra low volume CDA spraying is a viable alternative intoday’s environmentally aware world. Better results are achieved withfewer chemicals.

Ultra-low volume (ULV) systems have successfully been shown to use aslittle as 1/10, or less, of the liquid volume that is used in conventional cropspraying. The spray system is unique in that it is designed to producedroplet sizes in a range of 60-250 microns with 95% consistency. This sizerange is the ideal killing range for most insects, plant diseases and weeds.A controlled droplet spectrum of a narrow range is made possible throughuse of the high-speed rotating grooved and toothed atomizing cup, airdriven by multi-blade propellers. This enables the spray system to be usedfor all areas of pesticides, insecticides, fungicides, as well as liquidfertilizer, herbicides and maturing agents.

The spray system has been customized to fit the Quicksilver GT 500. TheGT 500 is equipped with a 24-gallon (91 liter) tank. This allows for morecoverage per load.

The standard chemical tank of the GT 500 spray system is translucentfiberglass so one can determine exactly how much liquid remains in thetank. The tank and spray system can be removed in about 30 minutes tooperate the aircraft with two seats for recreational flying.

Standard equipment on the spray system is a high volume, constant speed,12 volt, electric pump that is capable of a flow rate of over 8gallons/minute (30 liters/min.) at 15 psi. These flow rates will enable yourspray system equipped aircraft to be used in applying liquid fertilizer andsome herbicide and fungicide applications requiring higher volumes. Thepump system utilizes a remote on/off switch as standard equipment.

With a spray speed of 60 mph (52 knots) and an effective swath width upto 60 feet (18.3 meters), the GT 500 spray system will cover an impressive7 acres/minute (2.8 hectare/min.) when spraying insecticide at a rate of 1quart/acre (2.4 liters/hectare) of total spray. Carrying a 24-gallon (91 liter)load, the GT 500 spray system will cover 96 acres (39 hectare) per load.

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When installing the spray system on the aircraft, these concrete benefitsstand out:

*Significant reduction in application cost by utilizing anultralight/light aircraft.

*Important time savings due to fewer fill-ups, more acres/hectarescovered per load and per day, and no recharging on battery backup.

*Notable improvement in coverage and control through consistentapplication of the best suited droplet size for better penetration ofcrop canopy, decreased drift potential and evaporation, andgreater adherence of chemical to the leaves.

*Aircraft performance is at its best owing to the designed lowsystem weight and the Spray System minimal drag. And,according to a NASA study done in the 1960’s, you arespraying at near the ideal spraying speed for chemicalapplication: 44 mph (70 km/h). Larger airplanes andhelicopters can not operate near that speed because their down-wash disrupts the controlled droplet mist application.

Combining the low initial cost of a CDA spray system with the lowoperating expense of an ultralight/light aircraft, the possibility oftremendous cost savings to the world's agricultural industries is withinreach. The spray system was designed to promote economically andecologically sound spray methods that are the future of agriculturalaviation.

CONTROLLED DROPLET APPLICATION

The spray system's nozzles utilize centrifugal force instead of hydraulicpressure to create spray patterns. This technology is referred to as CDA,or Controlled Droplet Application. The objective of CDA is to producethe proper size droplet to effectively apply the chemical. The chemicaland its target determine the proper size droplet. The aim when spraying isto uniformly cover the target surface with a given concentration ofchemical. The key to this successful application is determined primarilyby droplet size. Herein lies the advantage of CDA as compared tohydraulic atomization. CDA is a proven way to produce uniform dropletsize. Hydraulic nozzles, on the other hand, emit droplet size that may varyfrom 10 to 500 microns, or larger. This wide variation in droplet sizecauses inefficient application of the chemical.

Special Air Services rotary spray nozzles Droplets from a conventional nozzlebreak the droplets into a more uniform size. range from very small to very large.

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SPRAY SYSTEM SPECIFICATIONS

System Weight: 50 lbs. (23 kg);

Boom Length: 28 ft. (8.5 meters)

Atomization: 12 high speed rotating grooved & toothedatomizing nozzles, air driven by multi-bladepropellers, producing a controlled dropletspectrum of narrow range.

Droplet Spectrum: 60-250 microns with 95% consistency

Pressure: Requires 5 to 30 psi. Recommended 10 to 25psi.

Flow Regulation: Orifice flow regulators (7/64” and 9/64”supplied), flow control manifold w/valves &gauge.

Atomizer Flow Rates: 1-96 oz./minute (29.6 ml.-2.8 liter/min.)

Swath Width: 60 ft. (18.3 meter)

Pump Flow Rate: 8 g.p.m. (30 liters/min.) @ 15 psi - 12 VDCCentrifugal pump w/remote on/off and tankagitation.

Acres Covered Per Load: High capacity 24 gal. (91 liter) @ 1 quart totalspray/acres (2.4 liters/hectare) = 96 acres (39hectare). 1 pint total spray/acre (1.2liters/hectare) = 192 acres (77.7 hectare).

Acres Covered Per Min.: 7 acres/minute (2.8 hectare/min.) at 60 mph (52knots) spray speed, 60 ft. (18.3 meters) swathwidth, 12-15 ft. (3.7-4.7 meters) altitude.

Tank Capacity: Standard: 24 gallons (91 liters) fiberglass

Construction: AN quality hardware and aircraft gradealuminum, fittings, tubing, hoses, plumbing,flow control manifold w/pressure gauge.

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PARTS LIST

"ASSEMBLIES & COMPONENTS AS SHIPPED"Part Number Description Quantity

AG-3001 91 Liter Fiberglass Tank Assembly 1AG-4001 144" Boom Assembly 2AG-6001 Center Tube Assembly 1AG-6002 1 ID x 5" Clear Reinforced Hose 2AG-6025 Boom Strut 45" 2AG-6026 Boom Strut 53" 4AG-6027 Boom Strut 64" 2AG-1001 Nozzle Assembly 12AG-1024 Filter and Check Valve 12AG-1014 7/64" Orifice Tapered Cone 12AG-1015 9/64" Orifice Tapered Cone 12AG-1016 7/64" Restriction Washers 12AG-1017 9/64" Restriction Washers 12AG-6024 Triangular Tang Strut Attachment 4AG-6037 1/8" x 1/4" SS Rivet (CCPQ-44) 2AG-6038 3/16" Aluminum Rivet (AAP-64) 5AG-6040 3/16" x 1/4" Alum Rivet (AAL-64) 2AG-5007 4" Tie Wrap 8AG-5008 8" Tie Wrap 12AG-5016 Black Wire Loom (4 Feet) 1AG-6028 3/16" ANS-5A Bolt 30AG-6029 3/16" Lock-Nut 30AG-6030 3/16" Washer 50AG-3013 1" SS Cushioned Clamp 8AG-6003 SS 1 1/4" Hose Clamp 5AG-6012 1/4" Clear Polyflow Tubing (12 Feet) 1AG-6013 Pressure Gauge Assembly 1AG-5005 12 Volt Battery 18 Amp 1AG-5006 Battery Bracket 1AG-5015 Battery Strap 1

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ASSEMBLY PROCEDURES ANDINSTALLATION

AIRCRAFT PREPARATIONNote 1: Throughout the assembly sequence, reference will be made to partnumbers, item numbers, pages and figures in the GT 500-912 assembly,maintenance and parts manual, Doc. #952-02.

Note 2: Removal of the following components will make room for theinstallation of the fumigation equipment.

1. Before starting the installation, it is recommended that both the frontand rear doors be removed.

2. Uninstall the rear seat by removing the item #5 illustrated bolts on page2-113 in the assembly manual (the bolts attach the seat to the seat tracksthat ride on oilite bearings). Save these bolts; they will be requiredwhen bolting the tank to the plane in a later sequence.

3. Remove the pedals used for controlling the rudder in the rear seat of theplane. Remove the bolts identified as item #3 on page 2-53. The pedalsand the push-rod assembly have to be removed at the same time byremoving the applicable hardware shown on page 2-25 of the assemblymanual. Both the left and right pedals, mounting channels and relatedhardware must be removed.

4. Remove the throttle lever and the throttle link tube illustrated on page2-187.

5. Remove the brake lever and the brake linkage tube illustrated on page2-189.

Tank Installation1. Install the tank, part #AG-3001, in the same place the seat was located

utilizing the hardware that was removed from the rear seat track. Thetank must be inserted into the airframe per the illustrations below.

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2. Mount the Pump Assembly, part #AG-2001, to the bulkhead using theholes in the bulkhead that were freed when the right foot pedalmounting channel was removed (see illustrations below). Use the samehardware removed from the foot pedal mounting channel. If necessary,refer to the drawing on page 2-53 of the assembly manual.

3. Install the battery support bracket, part #AG-5006, to the Bulkheadutilizing the holes that were freed when the left foot pedal mountingchannel was removed. Use the hardware removed from the foot pedalmounting channel. Install the battery, part #AG-5005, into the bracketattached to the left side of the bulkhead, using the battery strap, part#AG-5015, provided in the assembly kit (see illustration below). Addthe battery fluid provided with the battery prior to charging.

Note: Battery must be properly charged prior to operating the unit.Caution: Read and follow all warning placards and documents onthe battery and the packaging within which it arrives. Be extracautious when handling metal tools around a battery. If you drop a

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metal tool near a battery it might spark or create a short circuitbetween the battery terminals and some other metal part. Eitherevent may cause a dangerous electrical shock hazard, a fire, or evenan explosion. If the battery must be removed, to avoid an electricalarc (or spark), turn off or disconnect all of the accessories in theaircraft. Then always remove the cable that is connected togrounded terminal from the battery first. Handle battery with careto avoid risk of injury.

4. Securely fasten the aircraft shoulder harness and lap belt around thetank, ensuring that no hoses and/or hardware are restricted by theshoulder harness.

5. It is recommended that the fluid levels be externally marked on thetank using increments of 1 gallon or 5 liters. The aircraft should beresting on all three wheels and not on the tail skid when this operationis performed.

Fumigation Equipment Control Panel Installation1. Install the Fumigation Control Panel Assembly, part #AG-5001, 1/2" in

front of the Forward Throttle Mount Plate part #46542, to the PilotEnclosure. See assembly manual illustration on page 2-185. Measure1/2" in front of the forward edge of the forward throttle mount platealong the right upper surface or "lip" (flange) of the pilot enclosure andmark this location. Align the rear edge of the Fumigation Control PanelAssembly with this mark 1/4" from outer edge of the pilot enclosure.Carefully back-drill thru the existing 3/16" diameter holes in theFumigation Control Panel Assembly and thru the top of the Pilotenclosure and fuselage support tube. Secure with rivets #AG-6038, 3places. Carefully back-drill through the side of the pilot enclosure fromthe inside out using the two existing 3/16" holes in the FumigationEquipment Control panel as a guide. Secure with rivets #AG-6040, 2places.

2. Install Toggle Switch, part #AG-5004, to the Control Wheel as shownin the illustrations below. Drill two 1/8" holes in the control wheelusing the wheel switch bracket, part #AG-6034, as a guide. Rivet thewheel switch bracket to the control wheel using 2 rivets, part #AG-6037, and secure the toggle switch attached to the control panel to thebracket as shown. Secure the toggle switch wires using tie wraps asrequired.

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Hydraulic InstallationNote: Refer to the Hydraulic Schematic in Appendix 1 for lineconnections.

1. Attach Ball Valve Assembly, part #AG-3019, to the bulkhead usingtwo - 3/4" cushioned clamps (part #AG-3020) by drilling two 3/16"holes 3/8" away from the edge and 3 1/2" apart on the aft side of thebulkhead (see illustrations below). Attach using 2 bolts #AG-6028, 4Washers #AG-6030 and 2 nuts #AG-6029.

2. Attach the Center Tube Assembly, part #AG-6001 to the wing strutattachment plate (P/N 45403) located on the rear of the landing gearcarry-thru (P/N 45487), see assembly manual illustration on page 2-41.Remove bolt part #10240 per the illustrations below and attach bracket,part #AG-6023. Bracket #AG-6023 needs to be attached to both theright and left sides of the rear wing strut attachment plates. Bracketsmust be attached pointing towards the ground (vertical) as shown in theillustrations below. Attach the Center Tube, part #AG-6001, with thethreaded weldment pointing to the aft end of the plane and the ends of

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the bent offset pointed up above the weldment as shown in thefollowing illustrations.

3. Remove bolts (part #10063), Nuts (part #10521) and Washers (part#10560) that attach the Trailing Edge Lift Strut (part #45621) andLeading Edge Lift Strut (part #45620) Assemblies to the Trailing EdgeWing Strut Fittings (part #45722) and Leading Edge Wing StrutFittings (part #45721). Refer to the assembly manual illustration onpage 7-17. Attach Triangular Tang Strut Attachments, part #AG-6024,(4 places) to the Leading Edge and Trailing Edge Wing Strut Fittingswith the lower part of plate (with 2 holes) angled towards the pointbelow the wing where the spray boom will be located (4 places).Reattach Leading Edge and Trailing Edge Lift Strut Assemblies usingpreviously removed Bolts (part #10063), Nuts (part #10521) and only 1washer (part #10560), omitting 1 washer (part #10560) on the head sideof the bolt. Refer to the illustrations below.

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4. Position 4 cushioned clamps (part #AG-3013) to both the left and rightside sprayer tubes, part #AG-4001. The cushioned clamps should bepositioned at 7", 22 1/2", 74 1/2" and 86" from the outer end of thesprayer tube (end with drain valve). Note: The bolt attachment holesfor the 7" and 86" cushioned clamps should be pointed to theforward end of the plane and the bolt attachment holes for the 221/2" and 74 1/2" cushioned clamps should be pointed to the aft endof the plane on the sprayer tubes as shown in the illustrations below.

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5. Attach 1/2" sprayer tube support struts to the tang, part #AG6024, andthe cushioned clamp using bolt (part #AG-6028), nut (part #AG-6029)and 2 washers (part #AG-6030) in the following order:

? A 64" support tube from the 7" cushioned clamp to theoutboard hole on the leading edge tang.

? A 53" support tube from the 86" cushioned clamp to theinboard hole on the leading edge tang.

? A 53" support tube from the 22 1/2" cushioned clamp tothe outboard hole on the trailing edge tang.

? A 44" support tube from the 74 1/2" cushioned clamp tothe inboard hole on the trailing edge tang.

Note: Do not tighten bolts. Bolts will be tightened after sprayertubes are attached to the plane and nozzles have been properlyadjusted in a later sequence (see nozzle alignment, step #4).

6. Attach Sprayer tubes, both right and left sides, to the Center Tube, part#AG-6001 (installed previously) using 1" ID x 5" long ClearReinforced Hose, part #AG-6002, and four 1 1/4" diameter hoseclamps, part #AG-6003. See the following illustrations.

Note: Do not tighten hose clamp. Screws will be tightened aftersprayer tubes and nozzles have been properly adjusted (seenozzle alignment, step #4).

7. Attach 1 1/4" diameter x 14" long braided hose from the pump inlet tothe tank outlet using two 1 1/4" diameter hose clamps, part #AG-6003.See illustrations below.

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8. Connect the 36" long 1 1/4" diameter Clear Reinforced Hose from the90 degree PVC elbow attached to the "T" fitting to the 90 degree elbowattached to the Center tube and tighten the 1-1/4" hose clamps. SeeIllustrations below.

9. Attach the pressure gauge assembly to the Instrument Control Panel assuggested in the illustration below (location is a matter of customerpreference and instrument panels may vary & be customized). Drill 2holes .191 diameter in the pressure gauge bracket, offset from thelower edge. Use the bracket as a template and drill .191 diameterholes, 2 places, into the control panel to attach the pressure gaugebracket. Attach the pressure gauge bracket to the control panel usingthe 3/16" nuts and bolts provided with the assembly. See illustrationsbelow.

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10. Connect the brass fitting on the "T" valve to the pressure gaugeassembly attached to the instrument control panel using 1/4" clearpolyflow tubing, part #AG6012. Tighten the compression fittings.Note: Route the 1/4" clear polyflow tubing along the right side ofthe cockpit, to the instrument control panel and route along the topof the instrument control panel to the back of the pressure controlgauge. Do not kink, bend or crimp tubing during installation.

Final ConnectionsNote: Refer to the Electrical Schematic in Appendix 2 for wireconnections.

1. Connect the wire from the relay on the pump assembly to the 25-ampbreaker located on the aircraft throttle mount plate. The wire should beconnected to point 24A of the 25 amp breaker as illustrated in theassembly manual on page 2-237, “Main Wiring Harness ElectricalSchematic”.

2. Connect the wire from the 5 amp breaker on the fumigation controlpanel assembly to point 24A of the 25 amp breaker as illustrated in theassembly manual on page 2-237, “Main Wiring Harness ElectricalSchematic”.

3. Connect the battery by attaching the two wires connected to the relay tothe battery terminals. The cable connected to a power pole of the relaymust be attached to the positive terminal on the battery. The cableconnected to the relay ground (mounting foot) must be attached to thenegative terminal on the battery.

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4. Connect the wire from the pump switch on the Fumigation ControlPanel Assembly to the pole at the top of the relay.

5. Verify the pump is connected with the brown wire to the other powerpole of the relay and the blue wire to the relay ground (mounting foot).

Preliminary Hydraulic System Leak Check1. Fill the tank half way with water and close cover on tank.

2. Turn the Master Switch on the Fumigation Equipment Control Panel tothe ON position.

3. Adjust the pressure regulator valve to full open.

4. Turn the Pump Switch on the Fumigation Equipment Control Panel tothe ON position. System should now be discharging water through theopenings in the sprayer tubes on both the right and left sides.

5. Carefully check all connections in the hydraulic system to insure thatall connections are tight and no leakage is occurring. If any leakage isevident, check and tighten connections to correct the situation.

6. When the system check is completed, turn the Pump Switch and theMaster Switch to the Off Positions.

Caution: Take precautions to ensure that no fluid leaks on thebattery and/or electrical system.

Installation and alignment of Nozzle Assemblies and Sprayer Tubes1. Attach the Nozzle Assemblies, part #AG-1001, to the sprayer tubes by

inserting the Filter and Check valve into the Mounting Nozzle assembly(part #AG-4005) on the sprayer tube. Insert the Orifice Tapered Coneinto the Nozzle Assembly (see illustration for proper orientation) withthe Restriction Washer between the Orifice Tapered Cone and the Filterand Check Valve. Then screw the assemblies together tightly. Continueattaching the Nozzle Assemblies onto the tubes in each of six locationsper side. Note: Make sure that the filter and check valve are in placeon the sprayer tube side of the connection and that the RestrictionWasher and Orifice Tapered Cone are in place on the sprayer headside of the connection when attaching. See illustrations below.

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2. Turn the flow/pressure control valve to the off position. Repeathydraulic system leak check to test that the sprayer heads arefunctioning properly. Place an empty bucket under each head to capturespray and monitor that the heads are spraying water in equalproportions. If any heads are not spraying properly, check connectionsto insure that the flow is not being impeded.

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3. In order to align the sprayer tubes properly to their final position, theplane must positioned to where the root tube is horizontally level to theground.

4. Adjust the sprayer booms to a position which is 20-degrees downward,(loosen hose clamps prior to rotating sprayer booms) and the sprayertubes are fixed in their position below the center of the wings.Securely tighten all connections when the sprayer boom has beenproperly aligned and then recheck that the sprayer heads are pointing20-degrees downward and that the sprayer tubes are positioned underthe center of the wings.

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Final Hydraulic System Leak Check1. Fill the tank half way with water and close cover on tank.

2. Turn the Master Switch on the Fumigation Equipment Control Panel tothe ON position.

3. Adjust the pressure regulator valve to full open so that pressure is low.

4. Turn the Pump Switch on the Fumigation Equipment Control Panel tothe ON position. System should now be discharging water through theopenings in the sprayer tubes on both the right and left sides.

5. Carefully check all connections in the hydraulic system to insure thatall connections are tight and no leakage is occurring. If any leakage isevident, check and tighten connections to correct the situation.

6. When the system check is completed, turn the Pump Switch and theMaster Switch to the Off Positions.

7. Adjust the pressure regulator valve to full closed so that pressure ishigh.

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8. Repeat steps 4 through 6 to check system at maximum pressure.Caution: Take precautions to ensure that no fluid leaks on thebattery and/or electrical system.

Final System Check1. Ensure the security of the installed tank, pump, battery, hoses, control

panel and spray booms.

2. Verify that all control operations, such as elevator, rudder, flap, brakeand throttle function freely and that no hoses or AG system componentsinterfere with the operation of the aircraft.

Warning! Adjustments CANNOT be made during flight tocomponents installed in the aft seat position. Therefore it is imperativeto ensure that no components will shift or obstruct the controls duringflight which could cause a hazardous condition.

Note: The use of Aerial Application of Agricultural Chemicals is an areathat is very delicate and dangerous if not handled correctly. It is theexclusive responsibility of the operator of the equipment and not of themanufacturer of the equipment to install, maintain and operate the systemwhile insuring all safeguards are adhered to. Properly installed andoperated equipment will provide ample benefits to the owner of theequipment, the operator and the environment. The consequences ofimproperly operated equipment and/or improper use of chemicals aredetrimental to both the operator and the environment. This requires thatthe operator take all precautions to protect ones sight and avoidrespiratory and skin exposure and follow all recommendations of thechemical manufacturers Material Safety Data Sheets (MSDS).

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Flight and Application Procedures

1. In order to protect neighboring areas from contamination and/ordamage we recommend a minimum of meters of buffer zone betweenthe neighboring fields or areas.

2. Do not turn on pump until ready to spray to avoid the possibledischarge of chemicals. The flow/pressure control valve should also beleft in the open position until you are ready to begin sprayer applicationin order for the liquid to be continuously mixed.

3. The area to be sprayed should be properly mapped out beforehandutilizing either a moving flagman (who is properly protected), presetflags indicating the prescribed flight path or a GPS system.

General Maintenance

1. The sprayers will constantly rotate during flight and will determine thesize and dispersion of the droplets during application. The sprayersmust be properly lubricated before and after each tank of material isapplied. The type of fluid recommended is light oil such as transmissionfluid. The oil should be applied using an oil can with a tube attachedand the oil injected into the opening on the side of the sprayer headassembly as shown in illustration #XXX. The oil should be applieduntil you visually see the oil coming out of the front of the sprayer.Manually check by hand that the propellers are spinning freely andsmoothly.

2. When filling the tank with the chemical solution a manual or motorizedpump should be used to avoid spilling any liquid outside of the tank. Ifany spillage occurs, the spill must be thoroughly and properly cleaned.

Note: Some materials may be determined by the manufacturer to beflammable. Special precautions must be taken when using these typesof material to avoid any possibility of combustion.

3. It is important that after completion of an application that the plane andequipment be thoroughly rinsed with clean water. This should be done

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in a manner and location that allows for the collection of the runoff ofthe solution as this solution is considered contaminated and couldpotentially cause damage to the surrounding area and environment.

4. The tank and system also need to be thoroughly flushed to insure thatall residual material has been purged from the tank, system, tubes andsprayer heads. It is recommended that this purge be repeated a minimalof five times to insure that no residual material remains. Again, therinse solution must be captured and/or collected to insure that thecontaminated fluid does not cause damage to the surrounding area andenvironment.

5. Once the system has been thoroughly flushed with clean water, it needsto be flushed with a 40 to 1 mixture of water and _________________.

6. If the equipment is to be stored for any period of time, the sprayerheads should be removed and soaked in a diesel oil solution. If theequipment is not to be used for an extended period, the heads should beremoved from the diesel oil solution and wrapped in paper and storedin an airtight container.

7. The filter must also be properly cleaned by opening the filter cap andremoving the enclosed filter. The filter must be thoroughly rinsed priorto the filter assembly being reassembled.

Sprayer Head Assembly Maintenance

1. The sprayer heads are elements of extreme importance to the properfunctioning of the system. They contain a pair of ball bearings that needto rotate freely with lubricant to insure high RPM life and during theirusage they are exposed to the agrochemical solutions that seep throughthe dosificator. The aspersor cone is a very delicate component that cannot have any damage on the air grooves or teeth at the end of it. Thecondition of the cone is critical in order to control the size anddispersion of the droplets. The bearings, dosificator and aspersor conesshould be carefully cleaned and inspected for damage after eachapplication. Special care should be taken when reassembling to insurethat each item is defect free and assembled in their proper order forthem to function properly.

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Appendix 1

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Appendix 2