VM Operation Manual

VM Operation Manual
Owners Operation
Instruction Manual
VM160D/DS, VM225D/DS, & VM300D/DS
Manufacturer of Quality Power Sprayers
Table of Contents
General Specifications / Frame / Booms
Safety Data
Control Identification
Pre-System Maintenance Check / Spray Tank / Pump Check
System Dynamics
Getting Started
Ground Speed
System Pressure Adjustments
Boom Spray Tip Overlap Check
Spray Operation
Operational Checks During Extended Product Application
More Operational Checks
Between Tank Loads
Sprayer Clean Up
General Specifications - All Models
Tank / Agitation:
All SDI tanks are constructed from commercial grade
fiberglass, hand rolled for maximum density and
strength. The exterior is a high-gloss color gel coat
with UV inhibitor. Each tank is equipped with an offset 16" screw-in lid with spring-assisted bullet venting
and c-pillow perimeter ring gasket sealing system. Nylon mesh strainer basket with reinforcement ribs is included.
The low profile tank design has a custom anti-vortex
sump plate and venturi-jet agitation system. The external liquid level sight tube with calibration marks in gallons is located on the front corner of the tank. Custom
color-match gel coat is on the tank exterior.
Frame / Pump / Plumbing:
The frame is fabricated from high strength welded steel and epoxy
coated for durability. The pump is a positive displacement, 3cylinder piston-diaphragm design with integrated pulsation
damper. The pump is conveniently mounted on top of the tank at
the rear of the sprayer and is powered by the vehicle’s auxiliary
hydraulic system. Plumbing is reinforced nylon, brass, SST and
hoses are rubber or reinforced plastic/nylon/PVC blends.
“Economy” Manual Lift Booms:
Wet booms feature all steel support frames with variable adjustment mounting and height adjustment brackets. Equal-flow design includes equal length 304SST tubes with nylon end caps. Brass
and nylon feeder saddles with ¾” inlet and ¾” feed hoses. Nozzle bodies are polypropylene, 10
PSI, diaphragm check assembly, ¼ turn on/off locking cap with gasket and 50 mesh slotted nylon
tip strainer. Included spray tips are TeeJet TP11008VP. Other sizes, styles, etc. are available upon
request for additional charge. Bi-directional breakaway hinge with forward and reverse action,
fold-up for transportation and adjustable dampening spring are also standard.
OPTIMUM Turf Booms (Standard and Convertible):
The Optimum Turf Booms feature precision welded nozzle mounts. This error proof design keeps all
nozzles in perfect alignment versus other designs. The heavy duty bi-directional breakaway hinge
has swag style cable level anchor system and also has the ability to fold forward. Optional 12 volt
actuators are available for independent wing section raise and lower. Triple nozzle bodies are
standard with the included TP11008VP spray tips. The 15/21 foot convertible boom offers flip-out
wing extensions for increased area coverage.
Pump / Drives / Specs / Capacities – All Models:
Pump: Hydraulic driven, 3-cylinder positive-displacement piston-diaphragm.
Maximum Capacities/Pressure: Up to 30 GPM @ maximum vehicle hydraulic output capacity. Up to
200 PSI maximum system pressure developed at relief valve pressure gauge with the agitation gate
valve closed.
The pump hydraulic drive system reaches maximum performance when the vehicle’s engine speed
exceeds 3000 RPM’s. Vehicle operating RPM’s may change the hydraulic system output which affects pump speed/output. Factory settings allow sprayer to operate in the most common vehicle
engine RPM/gear settings for spraying (2-7 MPH). Other extreme spraying requirements may require minor component adjustment with tips from the factory for best results/performance.
Safety Data:
This symbol is a safety warning and appears next to information which may help
keep you and others from being injured.
and safe handling techniques).
D A N -
Recommended Safety Equipment:
Required to prevent accidental exposure or poisoning. (Consult chemical supplier for proper material compatibility.)
Spray Suit – Full coverage (arms and legs) – free of rips or
Shield – To prevent accidental facial contact with chemicals.
Goggles – To cover eyes (glasses for better protection).
PVC/Nylon Gloves – Protects hands and sleeve openings.
Mask/Respirator – Approved canister type with appropriate filter cartridges for
chemicals being used.
Work Area Safety Recommendations:
Chemical Storage – check local regulations – vary by region.
Sprayer Storage – check local regulations – vary by region.
Fill/Mix and Load Station – area should not be high traffic and should have run-off containment.
DO NOT allow non-spray personnel to enter mix area. All mixing should be performed with
proper safety gear in place.
Water Supply – if using public water system, recommend using anti-back flow protection on fill
hoses and water source outlets. Air gap filler (anti-siphon) is available as an option.
Fill Hose – should never be put into spray tank, you could contaminate hose (a habit that
should be avoided).
Overflow/Over Filling – recommend recovery or containment system. If not available, be certain
run off does not contaminate public sewers or natural wetland areas. See local regulations.
Moving Mechanical System Parts – keep hands away from rotating pump shaft and restrain
loose clothing. Use caution around system when in operation.
Broken or Worn Components – follow recommended safety and repair/maintenance schedules.
DO NOT operate without proper safety gear or operate if machine is not in proper working
order. Proper operation is not only safer but, it can save you money by properly applying the
desired chemicals at the correct rate.
Accidents/Problems – in case of injury, accident or unprotected exposure, notify your supervisor of incident and if necessary, contact poison control board, EPA, local fire department to
help with the situation.
Record Keeping – proper records showing chemical being used, batch size, time, date, areas
treated, weather conditions, unusual occurrences can protect you and others should any problem occur after a turf application has been made.
Local/State Regulations – request, read and follow all local and state regulations for your area.
These will vary by region. Be informed, not a victim!
Licensing – it is recommended that all spray technician operators secure proper CPA (Certified
Pesticide Applicators) license or equivalent. Check your local regulations.
Warning: SDI strongly recommends that you read and understand completely,
the Operator’s Manual for the specific truck you mount the sprayer to – be confident and sure of your skills before operating the truck with the sprayer attached.
The large liquid payload reacts differently during vehicle movement, than an
equal size dry load!
Please Use Caution!
Electronic Motorized Boom Control
A – Pressure Gauge
B – Pressure Adjustment Switch (Up/Down)
C – Master Boom On/Off Switch (Controls 1, 2, 3)
1 – Boom 1 (Left Boom)
2 – Boom 2 (Center Boom)
3 – Boom 3 (Right Boom)
EC-VMAFS -- All Function Control Box
Master On/Off Boom Switch
Pressure Adjustment Switch
Individual Boom Section On/Off Switches
Foam Marker Left/Right
Foam Marker Both Left & Right
Electric Lift Switches
Pressure Gauge
Control Box Power Switch
I -
Power Indicator Light
Raven SCS330 Boom Control with Motorized Valves
A – Master On/Off
B – Boom 1
C – Boom 2
D – Boom 3
E – System Select Power Switch
F – Rate Adjust/Override Switch (controls pressure/flow servo valve)
G – Rate/Data LCD Screen (shows flow rate and
active key pad function)
H – Data Input Key Pad
Complete system diagrams in Setup and Parts Manuals (consult for system layouts and component
**Please refer to The Raven Manuals for descriptions and features for that model.
Pre-System Maintenance Checks:
See your Vehicle’s Operation/Maintenance Manual for specific instructions.
Spray Tank Checks:
Frame hold down hardware – tight and unbroken.
Visually inspect fiberglass spray tank for leaks or cracks.
Visually inspect sprayer frame for cracks or broken welds.
Check all fasteners for tightness – replace worn items as needed.
Lid and Gasket (Lid Threads) inspect for leaks or warping, wipe off dirt from threads and gasket. Apply light lubricant to gasket, such as silicone spray. Check operation of spring-assisted
bullet vent in lid center. Replace pillow lid gasket if damage is present.
With lid open and basket removed, visually inspect the inside of the spray tank for flaking, residue buildup, check anti-vortex plate (black circle in sump area) and sump box for debris, i.e.
rags, instructions, etc. Remove as needed. Blocked suction can result in poor performance and
pump problems.
Periodically check ceramic orifice discs in venturi nozzles for cracks or blockages. These problems can lead to reduced agitation and possible products mixing problems. Replace or clean as
Pump and Power Checks:
Inspect hoses for rubs, cracks or any damage that could result in a leak of fluid – repair as
CAUTION: Normal vehicle engine RPM operating
range for sprayer use is 1500 to 3500 RPM’s and 1st, 2nd,
and 3rd gears in the low range. Consult the factory if
you need to operate the machinery at settings other than
those specified.
Inspect exterior of pump, drive motor, and hydraulic
supply hoses for damage or leaks that could cause problems later. Consult manuals for repair options.
With each fill of tank, inspect the pump’s see-thru oil
reservoir for evidence of diaphragm failure. Oil will appear milky or cloudy if a diaphragm has damage.
Inspect bowl and gasket – improper gasket seating can result in poor pump performance. Replace with correct size gasket only! During bowl replacement, only hand tighten! DO NOT
Remove black nylon suction strainer bowl and clean screen of any debris. A 20 mesh screen
is standard. Using 40 mesh or finer will require more frequent checks for debris in the screen.
A plugged screen can result in decreased fluid availability to the pump (starved-suction condition). The resulting effects can range from reduced output to torn diaphragms.
Check bottom load 3-way suction ball valve and turn handle to pump suction (arrow points
Check to see that agitation control valve is fully open. Turn knob to the left (counter clockwise)
to open. Due to the unique design of the tank bottom suction and anti-vortex area – turning
the agitation down or off when the tank is low is not necessary. The tank will pump down to
dry with the agitation fully on.
Spray Boom Checks:
Inspect mounting hardware and support frame for fastener tightness and worn or broken components. Repair as needed.
With vehicle tires properly inflated and tank full of water, check boom for level and proper
height. See Setup Manual for proper adjustments.
Grease boom hinges (breakaways), be sure and remove any debris (i.e. grass, sand, dirt, etc.)
from greased area on pivot plates.
Adjust return spring tension to stiffer or looser action. See Setup Manual for details.
With booms in the down (operational) position, check for level again.
Between sprays, check and clean all boom nozzle assemblies. Inspect check valve diaphragms
for tears or warping, check and clean tips with a soft nylon tip brush. Clean strainer screens
and tip gaskets also. Replace worn or defective items as needed. Proper tip maintenance will
result in optimum performance and pattern development.
Motorized Boom Control Checks:
Check battery connections – alligator clips – for proper pole (+/-) hook up. Check wire fastener screw on clips for tightness. Remove any corrosive terminal buildup.
Check control box mount and console wing nuts for tightness. Clean dirty console with a
damp cloth (mild soap). DO NOT USE solvents.
Check all toggle switches for excessive play and replace as needed. If switches are rubber booted, check boots for tears and replace worn ones.
Check control console pressure gauge bezel (clear plastic ring which holds gauge into console).
Raised tabs should be at 6 and 12 o’clock positions.
Check back side of console and make sure power and control cable assemblies are locked into
multi-pin connectors. Then replace protective rubber boots.
Check fuse and rubber boot.
Check plastic pressure gauge tube for kinks, breaks or blockages. To clean a blocked tube
(packed with dry powder), #1 – put some clean water in the spray tank (2-5 gallons), #2 – turn
sprayer on and set RPM’s to 3000 on truck, #3 – on back side of console, is a metal tube receiver
with 1/8" tube engaged. Push tube and top of metal coupler with your thumb and index finger, #4 – while holding metal ring in, pull tube out with your other hand, #5 – point disengaged tube away from box and face, and allow debris to clear from tube, #6 – if unsuccessful,
stop and shut sprayer off, #7 – disengage other end of tube from boom valve inlet, #8 - use
rubber tipped air nozzle to force high pressure air through tube, #9 – if unsuccessful, replace
with new tube and start flushing new tube after each spray application.
Move back to rear of sprayer – boom area.
Inspect motorized valve harness connector plugs – they should be tight against valve body –
screw tight – no prongs showing from valves.
Check valve mating joints (seams) for product leakage. If leakage is detected, tighten nuts on the
4 guide rod bolts and bring valves closer together. Not too tight – o-rings are in each joint area.
If leak persists, separate valve bodies and replace o-rings with new ones.
Check that all horseshoe clips on boom feed barbs and metered by pass valves are pushed in and
secure. Leakage can result if u-clips are not in place.
Move back to control console – LISTEN carefully as you perform the next checks.
Push up on pressure adjust toggle switch – servo motor on yellow striped valve should run. Reverse toggle position and verify motor works in both directions. Failure – See Troubleshooting
Push master power toggle to on position – now one switch at a time, try each boom, 1-2-3, in
both directions. Slowly verify the working in both directions of each motorized valve.
Raven Boom Control Checks:
Procedures are similar to Motorized Valves – refer to supplied RAVEN Manual for test procedures.
Inspect and wipe debris from console with a damp cloth.
Verify your preset calibration numbers – DO THEY MATCH YOUR RECORDS SHEET IN THE
RAVEN MANUAL? Modify any numbers that do not match.
Check all harness connectors on back of box.
Inspect speed sensor assembly, especially the magnets if that style is in use. Clean any debris
from the face of the magnet and check alignment/orientation to the center of the pick-up sensor.
If radar is in use, check orientation to ground and wipe sensor face of any debris. Consult Raven
Manual for additional information.
Place control box power switch to manual position.
Check motorized valve operation – same procedures as standard controls – exception (NO metered bypass).
If Raven system is equipped with RADAR speed sensor, see Raven Manual for check list and test
Electric Boom Lift (optional):
For setup and complete instructions, see Boom Lift Owners Manual.
Check both actuator mounting bolts for tightness and for wing down position parallel to ground
position, adjust level to ground with swag cable anchor eyebolt.
Periodically spray a penetrating lubricant onto pivot points and hinge bushing assemblies.
Check control harness fuse – 30 amp rating.
Check control console toggle switch for play and proper operation.
Check harness connectors at control box pigtail and each actuator pigtail hookup.
Foam Marker (optional):
For setup and complete instructions, see Foam Marker Owner’s Manual.
Inspect solution tank for leaks or cracks.
Check cap assembly for cracks or leaks.
Check fuse in control harness – 10 amp rating.
Activate power switch to left and then right positions and verify compressor will start up and
if container has fluid, liquid should flow to feed blue tube on corresponding foam generator
cone and foam should start or liquid will drip from outlet steadily.
Foamer uses two solenoids per side activation. One for air, one for solution – both are inside
of black turtle shell cover with a matching pair for the other side and the main compressor
unit. White hoses carry air to system, blue hoses carry solution. Hose connections are colored coded white or blue, so are fly nuts and hoses. Just match the colors and make sure to
get adequate hose on bib contact before tightening down on fly nut fastener. If system fails to
start, check 12 volt power supply first. System is run/tested at the factory prior to shipping to
your dealer for installation. A running system will not foam with water only – 160:1 ratio
(water: concentrate) or similar solution must be added to the solution tank’s water. SDI foam
concentrate is recommended for best machine performance.
Check supply hose fasteners on boom tubes for proper position, tightness, and routing.
Should not interfere with tips or nozzle check valves – Loom (black ribbed cover) should run
along the top of boom tube fastened with nylon zip ties.
Check foam generator cone position. Should be at boom wing end and clear spray pattern
distribution area. Keep the cones out of spray by tilting up (required for raindrop style tips).
Hose Reel (optional):
Check supply hose from pressure side of pump to swivel inlet on reel drums for cuts,
scrapes, kinks or leaks.
Lubricate reel swivel at grease zerk – if equipped.
Check reel to tank fastener hardware for tightness and evidence of leaks. Rubber well nuts
and fender washers should be used with SST bolts. See Hose Reel Mounting Instructions
and fastener use sequence.
If electric rewind, check battery and all power harness connections. 40 amp circuit breaker
should also be part of electrical hookup.
System Dynamics
How Your System Works – Why they call it a sprayer:
POWER – Utility vehicle’s auxiliary hydraulics provides fluid to sprayer’s pump
drive motor. On/off control lever is located on the center control console. Pull the
lever back to activate the auxiliary hydraulics.
TRANSPORTATION – Sprayer/truck mounting style makes the two systems act as one
complete machine.
Fluid path through sprayer – items 1 through 12:
1. Spray Tank – containment for fluid and product mix chamber – made of fiberglass and resin
compound. Unique bottom shape is attached to directional side gutters to effectively direct solution to the tanks rear sump. This design allows sprayer to maintain performance even at low
liquid levels. Design also works as damper (anti-slosh control) for operating with less than a
full tank.
2. Anti-Vortex Plate – located in sump (lowest part tank interior), facilitates complete liquid draining without causing pump suction loss or prime break. Attaches to suction flange.
3. Suction Flange – external hose barb assembly on tank sump area – connects tank to main suction
4. Suction/Off/Drain “Bottom Load Valve” – large 1½” 3-way ball valve (all-in-one design). Arrow
on handle points in direction of fluid flow – up (suction/pump) – side (off) – down (drain). Off
allows cleaning of suction’s strainer screen with loaded tank. Pump should only be running
when arrow points up (suction open) – pump diaphragm damage can occur when valve is off
or drain position while running (starved suction conditions).
5. Suction Strainer – filters out particulate matter and debris from supply tank. Extends pump life
and eliminates foreign objects which may disrupt normal boom or gun operations.
6. Diaphragm Pump – piston/diaphragm design uses desmophan diaphragm attached to a piston’s
top and supported by trapped oil from pumps main case.
7. Pressure Regulator – controls pressure to spray boom and accessories. T-handle turns clockwise
to raise system pressure and counter clockwise to lower system pressure. Once desired pressure is reached tighten lock nut on base of T-handle to fix the setting. Once system is charged
to set limit, an internal spring and seat releases the excess pressure and fluid for low pressure
recirculation back to the tank through the bypass hose.
8. Agitation Control Gate Valve – controls amount of tank agitation by amount of liquid through
Venturi nozzle multiplier orifice. Recommend you leave full open at all times. No need to
close with low tank liquid level.
9. Jet Agitation – located above the sump channel at the back of the tank. 6 venturi style nozzles
with ceramic metering orifice disc multiply the exiting fluid and disperse materials throughout
the solution tank – hydraulic mixing.
10. Hose Reel – hose holding spool which allows hookup of spray system to a spray handgun or
walking type spray boom. Holds and organizes supply/spray hose for repeated organized uses.
11. Boom Controls – supplies liquid to motorized valve assemblies for dispersal (through the spray
Notes on System Dynamics
Diaphragm Pump Lubrication – internal mechanical components operate in a flooded oil bath environment – the pump’s cylinder diaphragms keep contaminants/spray solution from entering the oil’s
environment. Diaphragms should be inspected yearly and replaced when wear or abnormalities are
discovered. Case mounted see-thru oil reservoir will cloud or be cloudy if spray has entered the
oil’s environment. Pump can handle all materials and run dry (no solution) without damage.
Venturi-Jet Agitator Nozzles – installed with ceramic metered orifice disc (long wearing vs. plastic).
Long lasting ceramic discs provide stable agitation flow rates for trouble-free fluid mixing.
Suction Strainer – provides liquid filtering of particulate matter in spray material. Screen mesh sizes
available: 40, 50, 80, and 20 (standard) in SST material. Should be cleaned daily or more often as the
need arises.
Non-Corrosive Plumbing – all spray plumbing is SST, nylon or PVC or polypropylene for all liquid
handling parts.
System Dynamics – Materials Compatibility
SDI’s diaphragm pump is capable of pumping almost any nonflammable liquid without trouble or damage to the pump. On extremely thick or gritty suspensions, it is advisable to operate the sprayer with the suction strainer screen removed. Clogging up the screen can starve
the pump and cause premature diaphragm damage. For materials with high residue, it is advisable to rinse pump and plumbing as soon as you return to the sprayer fill area.
Avoid heavy, thick dye markers and add dyes into a full mixing tank, not an empty filling tank.
See Troubleshooting Section for scrubbing suggestions.
Spray Liquid Viscosity – the addition of certain WP, WDG, EC’s etc. may cause the viscosity
(thickness) of the water to increase. This can sometimes affect the calibration of the spray
nozzle output at pre-calibration water numbers. Consult chemical supplier for recommended
modifications to your system.
Specific Gravity of Sprayed Suspension – water on average weights 8.34lbs./gallon – when you
add mix to the water, the weight will change. Sometimes the solution gets lighter less than
8.34lbs./gallon and sometimes it gets heavier than 8.34lbs./gallon. Weight of solution changes the affect output calibrations of nozzles. See Table and Formulas to make necessary adjustments to compensate. Especially critical when using computer controlled rate systems.
Getting Started:
Practice with water – after you have followed all recommendations, it is advisable
to familiarize yourself with the operation of the new truck and sprayer package.
Practicing with plain water before the addition of expensive and destructive chemical formulas (when miss-applied) can be smart and cost effective.
Practice and calibrate before you spray dollars away! Know your machine and its
Calibration – First Step to Spraying:
To spray and spray accurately, you must have a set of standards to spray by. They are:
Desired Application Rate (GPA or G/1000 FT²).
Nozzle spacing (W”) – Distance between spray tips.
Desired Ground Speed – recommend a fixed (governed) speed MPH to maintain accurate calibration. Tip style-type of pattern for particle distribution for applicable chemical to be applied, i.e. FL, XR, TT.
Tip Size – determines volume per nozzle and desired droplet (micron) size of spray carrier
When used in the following formulas, the application rate can be maintained by fixing the constants
for each category. See Technical Information Section.
The easiest method of calibration is to use as many fixed constants that can be controlled, and then modify the
tip size and output pressure to lock in your desired application rate.
Technical Information:
Useful formulas:
GPM (per Nozzle)
(in acres)
GPM (per Nozzle)
GAL/1000FT² x MPH x W
(in square feet)
5,940 x GPA (per nozzle)
136 x GPM (per nozzle)
GPM – Gallons per Minute
GPA – Gallons per Acre
GAL/1000FT² - Gallons per 1000 Square Feet
MPH – Miles per Hour
W – Nozzle Spacing (in inches)
A – Nozzle volume required to obtain desired GPA rate at desired
speed and spacing. See TeeJet Catalog for style and size of tip to
complete job.
B – Nozzle volume required to obtain desired GAL/1000FT² rate at
desired speed and spacing. See TeeJet Catalog for style and size of
tip to complete job.
Specific Gravity Adjustments (When You Spray More Than Water):
typical US gallon weighs 8.34lbs. Most manufacturers’ nozzle
charts show performance with water only. Example: target application rate – 50 GPA (water specific gravity 1.0), add 28% nitrogen
to the solution typical weight per gallon is 10.65lbs. (28% nitrogen
in water specific gravity is 1.28)
The Formula
GPA (solution) x conversion factor = GPA from table
50 x 1.13 = 56.5 GPA corrected
This new output could require a different spray tip.
*Specific gravity can be determined by weighing a measured
gallon of your solution once mixed. Then use the table to find
your conversion factor.
Ground Speed:
Turf Truckster® vehicle offers 5 speeds forward and one in reverse. Most
spraying will be done in 1st, 2nd and 3rd gears and RPM’s between 1500 and
The hydraulic drive pump will operate in this range but will have reduced
output at RPM’s below 2500 on the engine. High volume outputs should
be done at the 3500 RPM setting.
Use the “Measure Travel Speed” formula to gauge your exact speed for
calibration formulas and tip selection. See Tachometer/Speedometer picture.
Miscellaneous Conversion Factors:
One Acre = 43,560 square feet
= 43.56 1000FT² blocks
One Acre = 0.405 Hectares
One Hectare = 2.471 Acres
One Gallon per Acre = 2.9 Fluid Ounces per 1000FT²
= 9.35 Liters per hectare
One Gallon per 1000FT² = 43.56 Gallons per Acre
One Gallon = 128 Fluid Ounces
= 8 Pints
= 4 Quarts
= 3.79 Liters
= 0.83 Imperial Gallons
One Mile = 5,280 Feet
= 1,610 Meters
= 1.61 Kilometers
One Pound per Square Inch = 0.069 Bar
= 6.896 Kilopascal
GAL/1000FT² (1) x MPH (2.9) x W” (10) = .213
Based on the chart, a tip pressure of 45 PSI with
the yellow, or 20 PSI with the blue XR TeeJet
tips, will apply the proper amount based on
Speed/Spacing/Rate Constants.
The chart above is from the TeeJet Catalog. For
a complete listing of tip options and charts, call
SDI or your local dealer for a new TeeJet Tip
Catalog or visit www.teejet.com.
Suggested Minimum Spray Heights – Turf Nozzles:
TP11008VP polymer test tips supplied with every SDI boom. Order other sizes or styles from
SDI’s Parts Department.
Mixing and Loading Pesticides Product Active Ingredient Formulas or
How Much Pesticide Do I Add to My Spray Tank?
To determine the amount of pesticide to add to the spray tank, you need to know the recommended
application rate of pesticide, the capacity of the spray tank, and the calibrated output of the sprayer.
The recommended application rate of the pesticide is given on the label. The rate is usually indicated as pounds per acre for wettable powders, and pints, quarts, or gallons per acre for liquids.
Sometimes the recommendation is given as pounds of active ingredient (lb. per active ingredient)
per acre rather than the amount of product per acre. The active ingredient must be converted to actual product.
System Pressure Adjustment:
Pressure adjustment procedures vary by control style
Set Pump Output Pressure to Agitation - set speed limiter on vehicle’s throttle to an operating RPM that corresponds to desired MPH with selected gear and range of spraying. Open
suction valve on sprayer, then pull auxiliary hydraulics lever
on vehicle’s center console. Go to pump assembly and close
all outlet valves (agitation, boom supply, and hose reel). This
will give the system a closed loop for proper setting of the system pressure relief. Adjust relief valve by loosening lock nut
then turn T-handle to right to increase (raise) pressure or to
the left to decrease (lower) system pressure shown on the pressure gauge. Set pressure in closed loop to 90 – 100PSI. Once
system is set to fixed pressure you can open and set the tank agitation output. The gate valve will
allow a full range of setting by turning the knob left for more agitation or turn the knob right for
less. The maximum allowable flow is metered by ceramic orifice disc inside the venturi jet nozzles.
System pressure may drop but should remain above the maximum needed for boom spraying (15 60 PSI).
12 volt Motorized Boom Valves
Follow the same setup procedures on pump and relief valve adjustment to set system pressure to 90
– 100 PSI. The electronic controller has switches in lieu of levers to control boom functions. Turn all switches on console
box to off position and hold down on pressure adjust switch
until pressure will go no lower (motorized regulator in full
bypass/open setting). Again, turn all metered bypass knobs
on motorized valves to the right until closed. Push up on
pressure adjust switch until the console mounted gauge reads
40 PSI then stop. Push boom switches 1, 2, and 3 to up/on
position then activate the boom master switch to the up/on
position. All three boom sections should be spraying and console gauge will probably show less
than 40 PSI. Use the pressure adjust switch to raise the boom pressure to 40 PSI. With system at 40
PSI, turn boom switch #1 switch to off – pressure should rise
above 40 PSI. Move to motorized valve and open metered bypass knob on/off valve until pressure drops back off to 40 PSI.
Position yourself so you can see the electronic console’s gauge
or have someone help you by calling out when you have adjusted back to 40 PSI. Cycle the #1 boom switch on and off as
you watch the pressure gauge reading. Except for a short
bounce of the gauge’s needle, the final pressure should read 40
PSI. If it is ok, repeat steps for boom #2 and then for boom #3.
Your metered bypass is now ready for operation.
Raven Computerized Controls
Computer equipped sprayers can operate in the manual
mode and follow same guidelines as standard motorized adjustment (no metered bypass to adjust when Raven is used). Raven should be in manual mode to adjust pressure on the system. Note: the Raven System
works on flow, not pressure. You will not be able to
keep the rate exactly on because the machine will respond to every little system change. When the computer is in control, it makes corrective adjustments many
times faster than the operator could even think about.
So do not let it worry you.
Boom Spray Tip Overlap Checks:
To verify the boom is properly set up and tip/nozzle height is correct, a water only pass over a dry
concrete or asphalt parking area, can reveal much information about your system’s setup.
With only water in tank, operate machine and spray with boom full on and drive and apply a pattern to the dry driveway/parking area. After the first pass, watch the spray dry and look for uneven areas or extra wet of dry zones.
Uniform and even drying indicates the system applying a uniform pattern. Checks of each nozzle
with a calibration catch container can assist your data on the system. Uneven drying or wet stripes
can identify overlap problems.
Wet stripes between nozzle tips can mean the boom is too high – striped under the nozzles may indicate the boom is too low. Proper tip height and overlap are found in the Setup Section.
The supplied TP11008VP polymer test tips are a tapered flat-fan design and require a minimum of 30%
overlap when mounted on 20" spacing (this is a tip
to ground height of 18" minimum). Consult the
manufacturer’s recommendations for the style of tip
you plan to use. Patterns, overlaps, sizes, materials,
droplet size, and pressure range can change with the
tips selected. Test with water if you have no experience with new nozzles.
Spray Operation:
The sprayer was designed to operate at an engine speed of 1500 RPM’s to 3500 RPM’s. The hydraulic drive diaphragm pump reaches full volume at 3000 RPM’s on vehicles tachometer.
Park vehicle on level ground with parking brake on – truck in neutral and engine off.
Safety equipment should be used during all sprayer operations as a rule. Safety equipment
should be in good condition, with no rips, holes, or tears.
Sprayer mix and load area should not be a high traffic area or visited by workers who are not
properly protected with safety equipment.
If equipped with an anti-siphon device (air gap filler) for back flow protection, rotate and lock
gooseneck filler into position.
Attach water feed hose and slowly turn on water source and bring up to full stream (without
splashing out).
We recommend the strainer basket be left in place and used to strain all materials being put
into the fiberglass tank.
Suction strainer should be installed if not already in place. Also, open the bottom load valve
to the pump at this time.
Determine amount of spray mix to be used for your application. If required amount is less
than full tank capacity, fill to desired level.
Place truck in neutral with parking brake engaged.
Start engine according to procedures outlined in Truck Owner’s Manual.
Using throttle lock (manual or electric), set engine speed to 2500 RPM’s.
On vehicle’s center console – pull auxiliary hydraulics lever back and turn the pump drive
on. If not operating, review the Troubleshooting Section for ideas.
A quick look into the open lid assembly can verify the pump is working through the movement of the tanks contents (water). Agitation control valve is located with the pump and relief valve on the back section of the spray tank.
**NOTE** if system fails to work as described, shut auxiliary hydraulics to pump
off and check Troubleshooting Section for possible cures.
Once system is operational, a quick system test should be performed before adding product
to the mix tank.
Lower boom wings to the operational position. Be sure area is clear of non-authorized spray
Turn on Master Boom Control (switch or lever) and adjust pressure to desired rate.
Check boom assembly for leaks. Inspect hose fittings, nozzle assemblies, end caps and the
complete system. Repair and/or re-tape any leaking fittings. STOP all drips!
All nozzles should come on and develop a full pattern. Clean or repair all nonworking assemblies.
**NOTE** System Calibration and Product Active Ingredient formula calibration sections
should already be completed. If not, refer to the appropriate sections and
compute your application data before continuing.
With calibration formulas completed, tips sized, dry run calibration and nozzle pressure set, you may
now proceed.
Restart truck and engage the pump and agitation system.
Spoon feed (add slowly) the chemical to be applied to the agitating tank water. The addition of some
products, all-at-once, may cause damage by plugging the in-line suction strainer screen which can
cause a starved suction condition. Product labels (WP, EC, WDG, etc.) are abrasive in nature and
should include extra mix time in the tank. Prepackaged dissolvable bag types are also difficult to mix
rapidly. The slow dissolve of the wrapper may lead to clogged suction strainers under certain “hasty”
conditions. Liquid products can mix easier than most dry formulations, but can be difficult to mix in
cold water areas. Consult with your chemical supply rep for any precautions or mix-it-up suggestions
for any unfamiliar products.
Mix times may vary by chemical, load size, water temperature and operator skill (experience).
Normal mix times can be 20 to 30 minutes per tank! This allows enough time to provide complete
particle distribution throughout the complete mixable liquid in tank.
Just because the water is murky and clouded doesn’t mean all the chemical is mixed up. Give it some
Haste during critical mixing phase by spraying to soon, may cause severe damaging rate changes from
what your original rate was suppose to be. Example: 1st 1/3 of tank could apply more than the desired
rate when heavy products are not fully suspended in the carrier water. The 2 nd 1/3 could apply close to
the right rate while the final 1/3 would be light on active ingredients. This is only a possible scenario –
adequate mix times will eliminate these costly errors from happening!
At the completion of chemical mixing phase, you are now ready to apply the chemical mix to your fine
turf areas.
If machine is equipped with SDI’s Quick Foam Marking System, refer to Operation’s Manual for application techniques.
Foamer use should be restricted to fairway and rough area with longer turf grass heights. Use on
greens and tee area can cause browning under slow dissipating foam balls during high air temperatures.
Be sure to allow enough spray overlap on end nozzle to cover the foam ball with a dissipating spray.
This technique allows for proper pattern overlap and the water from the spray speeds up the foam
ball’s disappearing from the turf area.
**NOTE** Failure to hit the foam ball with the spray from the end nozzle will result in an area of turf that is not being treated with your spray.
Cannot get enough pressure:
Settings exceed pump capacity
Vehicle’s auxiliary hydraulics not working or switched on
Spray tips too large
Tank empty
Hydraulic fluid in system at low level
Bottom load valve on pump suction off or partially closed
Liquid foaming in tank
Suction vacuum leak/crack in hose
Suction strainer screen clogged
Operational Checks During Extended Product Applications:
Frequently check your control pressure gauge for any change from original calibration set. A
rise in the pressure should alert you to a clogged or partially clogged spray tip orifice output.
Routine nozzle screen cleanings and use of all factory standard strainer screens will greatly
reduce this from happening. Another possible cause for pressure rise could be the increase of
engine speed. We recommend the use of a truck governor or throttle lock set for accurate
speed (maintains power accurately under variable load conditions).
One last cause for a system pressure increase could be from the increase in hydraulic oil temperature. As the hydraulic oil’s temperature goes up, the viscosity gets thinner. Under ideal
conditions, the thinner oil can pass through the hydraulic motor easier which may increase
the number of RPM’s. This small increase can be managed through the use of the pressure
adjust feature on the sprayers boom controls.
Pressure loss can also occur during a spray application. Loss of engine speed, loss of a spray
tip or the excessive wear on all tips as compared to a noncurrent calibration check. Frequent
checks of system calibration results in better system performance.
The use of SDI’s Motorized Valves with metered bypass can also affect the system pressure if
not properly adjusted. Refer to Motorized Valve adjustment procedure for more help.
Another possible cause of pressure loss on the system could be the result of a clogged suction
strainer. Your system uses a self-priming diaphragm pump. If the suction strainer screen becomes clogged, it restricts the flow of water to the pump. Keep your strainer screen clean and
it will protect your diaphragms too!
Also, be sure the strainer bowl is properly tightened with the gasket in place. An improperly
tightened bowl can result in a suction leak which will result in loss of fluid to the pump.
More Operational Checks:
If equipped with a speedometer, verify speed occasionally. The use of the ground speed governor or throttle lock control can maintain ground speed to keep your application rate on target. Stable speed is one of your necessary sprayer constants.
Boom wing orientation (levelness to the ground) option can assist over uneven terrain.
During turnarounds, while stopped, visually check the tank liquid level sight tube for the
amount of spray left in the tank. DO NOT do this operation during forward movement. Keep
your eyes forward to avoid collision accidents.
If using a Raven computer controller, periodically check the data/rate screen for proper rate
output. If not holding the desired rate, consult Raven’s User’s Manual or contact your local
dealer or the factory.
Between Tank Loads (refills):
Check vehicle fuel level – fill as needed.
Check solution tank on Foam Marker – fill as needed.
If using wettable powders or equivalent, check suction strainer and nozzle tip strainers for
possible debris build up. Clean as needed. Avoid costly and messy “in-field” service of
plugged nozzle screens by checking and cleaning often.
Refer to your calibration charts and area measurements to verify your application coverage.
Make any necessary adjustments to obtain your correct rate. A 10% error in application rate
can cost you hundreds of dollars in lost time and chemicals, not to mention the possibility of
turf grass damage.
When the Job is Finished / Sprayer Clean-Up:
Sprayers are often neglected during the winter, at the cost of valuable time and money in the spring
to fix cracked or broken fittings, hoses, or pumps that have seized.
A sprayer is a long term investment. All sprayers’ components, from tank to tips, should be
checked. Items that need replacement should be listed. Replacement parts should be purchased
during the off-season.
Sprayers should be protected against the harmful effects of snow, rain, sun, and strong winds.
Moisture in the air, whether from snow, rain or soil, corrodes metal parts of unprotected equipment.
The sun helps reduce moisture in the air, but it also causes damage. Ultraviolet light softens and
weakens rubber materials such as hoses. The best protection from the environment is to store sprayers in a dry building. Storing sprayers provides an opportunity to work on them any time during
the off-season, regardless of weather conditions.
Clean Up:
Prior to storage, clean the sprayer thoroughly with a cleaning solution. Which solution to use will
depend on the pesticides used during the season. Always check the pesticide label for specific
cleaning instructions. During cleaning, follow these general tips:
Use a cleaning solution containing 2 pounds of detergent for each 30 – 40 gallons of water.
This should be sufficient for removing most pesticides.
First, flush the sprayer clean with clean water. Then add the cleaning solution to the tank.
Agitate thoroughly and allow the water/detergent solution to circulate through the system
for several minutes.
Remove nozzles and flush the system twice with clean water.
Clean nozzle tips and screen in a strong detergent solution or kerosene, using a soft brush,
such as an old toothbrush.
Some pesticide combinations (especially if oil is used) may produce a putty type paste in
the tank. Flushing out the residue of such chemicals after each load prevents an accumulation.
During the final cleaning, examine the hoses, clamps, connections, no-drip valve, nozzle tips and
screens for needed replacement.
After the final cleaning, follow these tips to get the most out of your sprayer’s life:
Remove no-drip valve, nozzle tips, and strainers and dry them thoroughly. Clean tips with
a toothbrush only. Store metal tips in a can of light oil, such as diesel fuel or kerosene.
Store tips constructed of plastic and nylon in a dry place.
Make a special effort in storing tips so that the orifices are not damaged by contacting each
other or other parts such as loose screws.
Drain water from all parts to prevent freezing. To insure the hoses are completely drained
of water, purge them with compressed air.
Tape or cover all openings, so that insects, dirt and other foreign material cannot get into
Check the sprayer frame for scratched areas. Touch up these areas with paint to eliminate
Store sprayer in a clean, dry location within a building. If storage in a building is not possible, provide some sort of cover.
Remove hoses, wipe them clean of oil, and store them inside a building. DO NOT hang
them over a nail or sharp object. This causes a permanent crease that reduces flow through
the hose. Coil hoses around a basket or other large round object to prevent sharp bends.
P.O. Box 3107
Visalia, CA 93278-3107
(559)SDI-5555 / Fax (559)SDI-5591
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