Valmar ST8 Pneumatic Granular Applicator OPERATOR'S MANUAL
The Valmar ST8 Pneumatic is a granular applicator designed for efficient fertilizer application in row crop environments. It features a hydraulically driven fan, dual bins, and a variable-speed metering drive system for precise application rates.
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ST8 Pneumatic
Granular Applicator
OPERATOR'S
MANUAL
Valmar Airflo Inc.
Box 100
Elie, MB R0H 0H0
Phone (204) 353-2782
Issue Date: April 2010
FAX (204) 353-2864
Email: [email protected]
Box 100
Elie, MB
R0H 0H0
Phone (204) 353-2782
FAX (204) 353-2864
Email: [email protected]
Printed in Canada
Issue Date: April 2010 Part No. 20.13904
VALMAR ST8 Applicator
Table of Contents
Item Page
Serial Number Location 3
1 - Introduction 4
2 - Safety
3 - Safety Decals
4 - Operation
5 - Calibration
6 - Adjustments and Service
7 - Troubleshooting
8 – Assembly and Options
9 - Specifications
10- Parts
Printing Date: May 2010
28
31
33
11
17
21
26
5
7
Page 1
Serial Number Location
Your Valmar applicator has a model and serial number to clearly identify it. Always give your dealer the Model Number and Serial Number of your machine when ordering parts or requesting service information. Mark the model and serial numbers in the spaces provided for easy reference.
Applicator Serial Number
The Serial Number Plate is located on the lower hopper panel near the platform as shown in the photo below.
Model No. ___________________________
Serial No. ___________________________
VALMAR Introduction
1 - Introduction
Congratulations on your choice of a Valmar applicator for your farming operation. This equipment has been designed to meet the needs of a discerning agricultural industry for the pneumatic application of fertilizer and granular herbicide products.
Safe, efficient and trouble-free operation of your applicator requires that you and all who operate or maintain this machine read and understand all information contained in this Operator's Manual.
Safety Alert Symbol
This SAFETY ALERT SYMBOL indicates important safety messages in this manual. When you see this symbol be alert to the possibility of personal injury. CAREFULLY
READ THE MESSAGE THAT FOLLOWS.
Dealer Information
Your Valmar dealer is your source for parts and service for your applicator. If you need any assistance with the operation or maintenance of your machine, call your Valmar dealer. Write the dealer's name and phone number below for handy reference.
Dealer's Name:
Dealer Phone No.:
Operator Orientation
The directions left, right, front and rear as mentioned throughout the manual are as seen from the driver's seat and facing in the direction of travel.
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Valmar
2 – Safety
Read the Operator’s Manual
ALL OPERATORS must read and understand the Operator’s manual before working with the applicator. Review the
Operator’s manual and safety decals of this machine before each season of use.
The Safety Alert Symbol is on all safety decals. When you see the symbol, follow the instructions to avoid injury or death.
Signal Words
Note the use of the words DANGER,
WARNING and CAUTION on the safety
decals. Each signal word denotes a different type of hazard as shown:
DANGER
AN IMMEDIATE AND SPECIFIC HAZARD
WHICH WILL RESULT IN SEVERE
PERSONAL INJURY OR DEATH IF THE
PROPER PRECAUTIONS ARE NOT TAKEN
Safety
WARNING
A SPECIFIC HAZARD OR UNSAFE
PRACTICE WHICH COULD RESULT IN
SEVERE PERSONAL INJURY OR DEATH IF
PROPER PRECAUTIONS ARE NOT TAKEN
CAUTION
UNSAFE PRACTICES WHICH COULD
RESULT IN PERSONAL INJURY IF PROPER
PRECAUTIONS ARE NOT TAKEN, OR AS A
REMINDER OF GOOD SAFETY PRACTICES
Operator Safety
Applicator owners must give operation instructions to employees or operators before allowing them to operate the applicator, and at least annually thereafter according to OSHA (Occupational Safety and Health Administration) Regulation
1928.57.
Follow these safety guidelines:
Page 5
Safety
1.
2.
3.
Provide a first aid kit. Store it in a visible, accessible location and know how to use it.
Keep safety decals clean and legible at all times. Replace missing or damaged decals.
Before servicing, adjusting, repairing or unplugging the applicator, stop the
4. tractor, set the park brake and wait for all moving parts to come to a complete stop.
Ensure that all guards and shields are in place. Replace any that are damaged.
Do not allow riders on the applicator.
5.
Granular Chemical Safety
1.
2.
Read and strictly follow the manufacturer’s instructions found on the product container.
Wear chemically resistant clothing,
3.
4.
5.
2.
3. gloves and safety goggles.
Avoid contact with skin and eyes.
Wear a respirator as directed by the chemical manufacturer.
Wash thoroughly after working with chemicals, especially before eating.
6.
7.
Wash all clothing contaminated by chemicals.
Wash down the applicator prior to any maintenance. Dispose of wash water in accordance with local standards and laws.
8.
Know the poison control emergency telephone numbers in your area.
Hydraulic Safety
1.
Keep hydraulic components clean so that leaks can be easily identified.
Replace damaged hoses and fittings.
Use a piece of cardboard when trying to pinpoint leaks. Wear heavy gloves and a face shield.
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4.
5.
Have hydraulic components repaired by a qualified repair facility. Makeshift repairs may fail suddenly creating a hazardous condition.
If injured by a high pressure stream of hydraulic fluid, seek medical attention immediately. Serious infection can result.
Fan Safety
1.
2.
2.
Do not operate the fan unless all shields and guards are in place.
Stay well away from the fan during operation. Keep others away.
3.
Stop the tractor and wait for all moving parts to come completely to a stop before making any repairs to the fan or servicing its drive components.
Transport Safety
1.
Be sure that the SMV (Slow Moving
Vehicle) sign and all reflectors and lights required by local highway authorities are in place, clean and functional.
Disengage the metering drive. Failure to do so may result in the metering of chemicals and fertilizer onto roadways.
This may also cause the metering drive to operate at very high speeds and damage some of its components.
Storage Safety
1.
Store the applicator on a firm, level surface.
2.
Thoroughly clean the applicator before storing to avoid contaminating the surrounding area with pesticide and fertilizer residue. Dispose of the wash water in accordance with local standards and laws.
Valmar Safety Decals
3 – Safety Decals
Safety Decals
Keep safety decals clean and legible at all times. Replace decals that are missing or have become illegible. Safety decals are available from the Valmar Parts Department.
Safety Decal Installation
•
Be sure the installation area is clean and dry.
•
Decide on the exact position before removing the backing paper.
•
Remove the smallest portion of the backing paper.
•
Align the decal over the desired area and press the small portion of the decal into place.
•
Remove the remainder of the backing paper and press the entire decal in place.
•
Pierce any air pockets and smooth them out.
Familiarize yourself with the location and message of all safety decals on these pages.
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Safety Decals Valmar
Decal 1
Decal 2
Page 8
Decal 5
VALMAR
Decal 3
Decal 4
Safety
Page 9
Safety Decals Valmar
Page 10
Valmar Operation
4 – Operation
Your ST 8 applicator is designed to efficiently apply fertilizer products in a row crop environment.
As noted in the diagram below, the ST 8 uses a hydraulically driven fan to blow product through an air delivery system. Two sets of grooved metering rollers accurately meter product from a dual bin
hopper into a common set of venturis. The metering system may be configured to meter material from one bin into the upper metering roller, and material from the other bin into the lower metering roller. It can also be configured to meter the same material from both bins into only the lower metering rollers.
Air passing through the manifold and venturis draws the product into an airstream and delivers it to the seed boots. Product application rate is governed by an infinitely variable hydraulic metering drive.
FRONT
HOPPER:
40% (98 ft³)
REAR
HOPPER:
60% (147 ft³)
Figure 4-1
Fan
Rotation
Page 11
Operation
Pre-Operation Checklist
Before operating the applicator, inspect the following areas. If adjustments are necessary, see the Adjustments and Service chapter of this manual for specifications.
1. Inspect the hopper and metering system for debris. Clean if necessary. Inspect the delivery hoses for wear or restrictions.
Replace if necessary.
2. Make sure that all guards and shields are in place.
3. Ensure that the tractor hydraulic reservoir has sufficient oil for operation.
4. Ensure that all hydraulic lines are connected securely to the tractor remotes. Use a clean cloth to wipe any dirt from the couplers before connecting them to the tractor’s hydraulic system.
5. Check the fan and manifold for dirt and straw. Clean as required.
6. Check the metering rollers for caked on product. Clean as required.
7. Ensure that all bearings turn freely.
8. Check all chains, sprockets, belts and pulleys for proper adjustment and tension.
9. Check the hopper mounting hardware.
Tighten loose bolts and replace any broken fasteners.
Operation
Hydraulic Fan Drive
The ST-8 comes equipped with a hydraulically driven fan. Fan speed must be set using the tractor flow controller. Recommended fan speed is 32 inches of water column pressure, which is indicated by the gauge at the front of the hopper shown in Figure 4-2. This results in a fan speed of 4800 RPM for 8 outlets, 5500
RPM for 12 outlets, and 5900 RPM for 16 outlets.
Deviations from the recommended fan speed are permissible as long as product flows smoothly through the delivery system without plugging. This will depend upon application
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rate, product density, ground speed and hose routing.
The minimum hydraulic flow requirement is 20 gallons per minute.
Figure 4-2: Pressure Gauge
A check valve is installed on the hydraulic fan drive to allow the fan to freewheel to a stop when the hydraulic flow is cut off. The fan should not be operated without this check valve in place.
The fan drive motor is equipped with a case drain which must be plumbed to the tractor hydraulics for proper operation. The maximum case drain pressure is 43 psi.
See the Assembly and Options chapter of this manual for information on hooking up the fan drive to your tractor hydraulic system.
Valmar
Metering Bottoms
The ST-8 comes with two sets of independently driven metering rollers. The metering bottoms are protected from wind and debris by the clear shield as shown in Figure 4-3. The clear shield is large enough to protect both the upper and lower metering rollers. Always leave the clear shield in the down position when operating the applicator. Ensure that the lower edge of the shield engages the venturi cup lip.
The upper shut-off gate is indicated in Figure 4-
3. Push the gate all the way down to close off the flow to the upper metering roller. This is useful when the operate wishes to remove the metering roller with product in the hopper. Pull the gate all the way up for normal use.
Figure 4-4: Lower Shut-Off Gate
Operation
Clearshield
Shut-off Gate
Figure 4-3: Upper Shut-Off Gate
The lower shut-off gate is indicated in Figure 4-
4. Push the gate all the way in to close off the flow to the lower metering roller. Pull the gate all the way out for normal use.
For information on adjusting the metering roller gap and on servicing the metering bottoms, see the Adjustments and Service section.
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Operation
Flip Door
The ST8 is designed for Single Bin or Dual Bin application of material. In Dual Bin mode, material will flow from the front bin into the upper metering rollers, while different material from the rear bin is directed into the lower metering rollers.
In Single Bin mode, material from both bins will be directed to the lower metering roller only.
Flow to the upper metering roller will be completely blocked.
Single Bin or Dual Bin mode can be chosen by rotating the Flip Door Handle as shown below.
The hopper must be completely empty to flip the handle. Be sure to clean all material and debris from the flip door area to ensure an adequate seal.
Figure 4-5: Flip Door
The Flip Door handle is held in either position by a rubber strap. Photo 4-5 shows the Flip
Door handle in the Dual Bin position. To change to Single Bin, unhook the strap and rotate the handle in the direction shown by the arrow.
Hook the strap into the upper hook to secure the Flip Door for Single Bin application. It is recommended that the upper shut-off gate be closed when operating in Single Bin mode.
The Flip Door must be set for each metering bottom.
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The Flip Door cannot be configured to direct flow from both bins into the upper metering roller.
Hydraulic Metering Drive
The metering system on the ST-8 is driven hydraulically. Application rates are set by regulating the flow of oil to a hydraulic motor which drives the metering rollers. The end user must purchase a metering rate control system separately. Several systems are available from various manufacturers. These systems regulate oil flow by means of a flow controller, a metering control unit, a ground speed sensor and a shaft speed sensor.
A speed sensor may need to be attached to measure the speed of the shafts on the ST-8 bottoms. It is recommended that this sensor be attached to the hex shaft on the metering bottoms to allow for ready removal of the metering rollers. Consult with the manufacturer of the controller unit to determine what location would be suitable.
For accurate product application, material must meter from the bottom of the metering roller when the metering drive is engaged.
Certain parameters of the Valmar metering system may need to be entered into the metering rate controller for accurate application:
Each revolution of two metering rollers for each bin will apply a total of 157.8 cubic inches of
material.
The standard Char-Lynn hydraulic motor supplied by Valmar has a displacement of 11.3
cubic inches per revolution.
For every revolution of the hydraulic motor, the metering rollers will turn .228 turns.
For every revolution of the hex shaft, the metering rollers will turn .286 turns.
Valmar
For every revolution of the hydraulic motor, the metering rollers will expel a total of 36.3 cubic
inches of material.
Rawson Metering System
If you are using a Rawson metering system on the ST-8, program the system according to the instructions provided by Trimble. The following
Set-Up parameters will need to be entered for both Product A and Product B.
1. Dry Fertilizer Mode
2. Non GPS Mode
3. Com ‘B’ (or ‘A’)
4. Bit 7 Mode Off
5. Rate setting = 01.00 (factory default)
6. Material Density in pounds per cubic foot
7. Spread Width = the width of the tillage implement
8. Rate = your desired application rate in pounds per acre
9. Steps = a choice of 2%, 4% or 6 2/3%
10. Man Speed = 10 mph (factory default)
11. Man Speed Off (Turn Man Speed On if you wish to calibrate. Caution: your
metering system will run if the
hydraulic flow is engaged.)
12. Max Speed Off (Caution: turning Max
Speed On will cause the metering system to run if the hydraulic flow is
engaged.)
13. Del Rate = 157.8 (the product flow for the fertilizer metering rollers in cubic inches per revolution.)
14. Ratio = 12.92 (the sprocket ratio between the metering rollers and the
Rawson hydraulic drive unit)
Test Feet = the linear distance your ST-8 will travel over 1 acre or some fraction thereof. This is a function of the width of your tillage implement.
Operation
For information on calibrating the hydraulic metering system, see the Calibration chapter of this manual.
For information on hooking up the hydraulic metering drive to your tractor hydraulic system, see the Assembly and Options section of this manual.
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Operation Valmar
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5 – Calibration
Calibration determines the actual product flow rate of your applicator. Generally the metering rate of fertilizer is predictable as long as its properties are consistent. However, metering rate variations are possible and may be caused by:
•
Manufacturer’s quality control
•
Damaged or worn metering components
•
A change in product density due to settling during transport
For these reasons, calibration is essential for accurate application. The applicator should be calibrated the first time a new fertilizer blend is used and periodically thereafter.
Since the ST-8 metering system is driven hydraulically, a metering rate controller must be purchased separately to control the ST-8 metering mechanism. Calibration instructions
provided by the manufacturer of the rate controller should be followed in conjunction
with those provided by Valmar. Certain data must be entered into the metering rate controller for accurate application:
Each revolution of the two metering rollers for each bin will apply a total of 157.8 cubic
inches of material.
Calibration
Char-Lynn Hydraulic Motor
The standard Char-Lynn hydraulic motor has a displacement of 11.3 cubic inches per
revolution.
For every revolution of the Char-Lynn hydraulic motor, the metering rollers will turn .228 turns.
For every revolution of the Char-Lynn hydraulic motor, the metering rollers will expel a total of
36.3 cubic inches of material.
Rawson Metering System
If you are using a Rawson Metering System, the Del Rate for both product A and B will need to be set at 157.8. The Ratio will need to be set to 12.92. See the Operation section of this manual for more detailed set-up information.
Single Bin Calibration Set-up
1. Pour sufficient product into one side of the hopper for a calibration. Set the Flip Door to
Single Bin.
2.
Remove the venturi cover plate by unhooking the rubber latch indicated in
Figure 5-1.
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Calibration
Figure 5-1: Venturi Cover Plate
3. Place a container underneath the venturis to catch the product to be calibrated.
4. Open the lower shut-off gate fully.
5. Start the hydraulic metering so that it begins metering product into the calibration container. Stop when product is flowing evenly across the full width of the metering roller.
6. Empty the calibration container back into the hopper. Place the empty container underneath the venturis.
Single Bin Calibration
1. Follow the instructions provided by the manufacturer of your rate controller for calibration. Generally, the manufacturer will instruct you to manually input a tractor speed and then run the hydraulic metering for a sufficient time to meter out an acre’s worth of product or some fraction thereof.
2. Begin metering product into the calibration container. Weigh the calibration container.
Subtract the weight of the empty container.
Multiply the weight by 2 to arrive at an application rate for both metering bottoms.
3. Determine the actual application rate in pounds per acre.
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Dual Bin Calibration Set-up: Upper
Metering Roller
1. Close the shut-off gates for all metering rollers. Ensure that the Flip Door is set to
Dual Bin.
2. Pour product into the bin that feeds the upper metering roller on one side of the hopper. Ensure that there is sufficient product for a calibration.
3.
Remove the venturi cover plate on the side of the hopper with product by unhooking the rubber latch indicated in Figure 5-1.
4. Place a container underneath the venturis to catch the product to be calibrated.
5. Fully open the shut-off gate for the upper metering roller.
6. Start the hydraulic metering for the upper metering roller so that it begins metering product into the calibration container. Stop when product is flowing evenly across the full width of the metering roller.
7. Empty the calibration container back into the bin that feeds the upper metering roller.
Place the empty container underneath the venturis.
Dual Bin Calibration: Upper Metering
Roller
1. Follow the instructions provided by the manufacturer of your rate controller for calibration. Generally, the manufacturer will instruct you to manually input a tractor speed and then run the hydraulic metering for a sufficient time to meter out an acre’s worth of product or some fraction thereof.
2. Meter product from the upper metering roller into the calibration container. Weigh the calibration container. Subtract the weight of the empty container. Multiply the weight by
Valmar
2 to arrive at an application rate for both metering bottoms for the upper metering roller.
3. Determine the actual application rate in pounds per acre.
4. Close the shut-off gate for the upper metering roller.
Dual Bin Calibration Set-up: Lower
Metering Roller
1. Ensure that the Flip Door is set to Dual Bin.
2. Pour product into the bin that feeds the lower metering roller on one side of the hopper. Ensure that there is sufficient product for a calibration.
3.
Remove the venturi cover plate on the side of the hopper with product by unhooking the rubber latch indicated in Figure 5-1.
4. Place a container underneath the venturis to catch the product to be calibrated.
5. Fully open the shut-off gate for the lower metering roller.
6. Start the hydraulic metering for the lower metering roller so that it begins metering product into the calibration container. Stop when product is flowing evenly across the full width of the metering roller.
7. Empty the calibration container back into the bin that feeds the lower metering roller.
Place the empty container underneath the venturis.
Dual Bin Calibration: Lower Metering
Roller
1. Follow the instructions provided by the manufacturer of your rate controller for calibration. Generally, the manufacturer will instruct you to manually input a tractor speed and then run the hydraulic metering
Calibration
for a sufficient time to meter out an acre’s worth of product or some fraction thereof.
2. Meter product from the lower metering roller into the calibration container. Weigh the calibration container. Subtract the weight of the empty container. Multiply the weight by
2 to arrive at an application rate for both metering bottoms for the lower metering roller.
3. Determine the actual application rate in pounds per acre.
Calibration Results
Compare your calibration results with the target rate on your controller. A minor difference in flow rates is normal, but a difference that is outside the boundaries set by the manufacturer of your controller could indicate the following:
•
The flow rate characteristics or density of the product is different from what was expected. Measure the material density and input this value into the controller.
•
Data has been incorrectly entered into the controller.
•
The hydraulic controller is faulty.
•
Metering rollers are worn or damaged.
•
A sprocket in the metering drive system has been changed in the past. See
Figure 5-2 and 5-3 for the correct sprocket layout.
If a significant difference still exists after eliminating the above possible causes, contact the metering rate controller manufacturer.
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Calibration Valmar
Figure 5-2: Sprocket Layout for Char-Lynn Hydraulic motor
Figure 5-3: Sprocket Layout for Rawson Drive System
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Valmar Adjustments & Service
6 – Adjustments & Service
Servicing Precautions
leaks. A high-pressure stream of hydraulic fluid can pierce the skin, resulting in infection and toxic reaction.
WARNING
6. Never wear ill-fitting, frayed or baggy clothing when working around drive system components.
When servicing the ST-8 observe the following safety guidelines:
7. Replace all shields when service is complete.
1. Do not attempt any adjustments or maintenance while the implement is in motion.
2. Service the implement on a firm level surface. Support the hitch with the jack if not attached to a tractor.
3. Review the safety section of this operator’s manual.
4. Exercise extreme caution when working around or with hydraulic lines.
Depressurize the system when coupling or uncoupling lines.
This section provides information on daily and periodical maintenance of your applicator. A recommended service interval is listed with each item. Be sure to service all these components after any lengthy period of non-use as well. Follow these recommendations for safe and dependable operation.
5. Wear heavy gloves and a face shield when searching for suspected hydraulic
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Adjustments & Service
Metering System
Lubricate the metering drive chains daily with penetrating oil. Do not use heavy oil as this will cause dirt and dust to collect on the gears and chains. Check that all bearings on the metering system turn freely. Replace any that are binding or seized.
Chain Tension – Char-Lynn Motor (Fig. 6-1)
If your ST-8 is equipped with metering drives that use a Char-Lynn motor, adjust the chain tension between the hydraulic motor and the bottom shaft by loosening the bolts that hold the hydraulic motor in place. Rotate the motor until correct chain tension is achieved. Tighten the bolts. If the motor has to be moved to the extreme end of the tensioning slot shown below, replace the chain.
Figure 6-1: Char-Lynn Drive Chain Tension
Chain Tension – Rawson Drive (Fig. 6-2)
If your ST-8 is equipped with a Rawson metering drive system, adjust the drive chain tension by loosening the bolt that holds the
32/13 dual sprocket in place. Move the sprocket until both chains are tensioned correctly.
Tighten the bolt. If the sprocket has to be moved to the extreme end of its travel, replace the chains.
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Figure 6-2: Rawson Drive Chain Tension
Metering Rollers
The metering rollers should be removed, cleaned and inspected on a daily basis.
Grooving or flattening of the metering roller surface can drastically alter the metering rate.
Damaged rollers must be replaced.
Keeping the applicator free from moisture will help to prevent product from building up on the rollers.
Metering Roller Gap (Fig. 6-3)
The gap between the metering roller and the metering lip is preset at the factory. Should the gap need adjustment, do so as follows:
1. Loosen the bolts securing each metering roller bearing housing to the metering bottom.
2. Insert a ¼” spacer (i.e. drill bit) between the metering roller and the metering bottom lip as shown below.
3. Tighten the bearing housing bolts. Remove the spacer.
Valmar Adjustments & Service
Figure 6-3: Roller Gap
Metering Roller Cleanout (Fig. 6-9)
Clean the metering rollers on a daily basis as follows:
1. Open the clear shield and latch it in place.
2. Completely close the shut-off plates if the hopper is not empty.
3. Place a container under the venturis to hold any material.
4. Unhook the rubber latch that holds the venturi bottom cover in place as indicated in
Figure 6-4.
5. Flip up the bearing clips indicated in Figure
6-5 at both ends of the metering rollers and remove the rollers.
6. Clean the metering rollers and metering bottoms.
7. Reinstall the metering rollers and fully open the shut-off plates.
8. Lower the clear shield.
Figure 6-4: Venturi Bottom Cover Latch
Figure 6-5: Bearing Clip
Hopper Cleanout
Keep the hopper clean and free of debris to ensure trouble free operation. Do not leave fertilizer in the hopper overnight because condensation can cause the product to harden.
If the ST-8 is set to Single Bin mode, clean out the hopper as follows:
1. Open the clear shield and latch it in place.
2. Completely close the lower shut-off plates.
3. Place a container under the venturis sufficient to hold or transfer whatever material is left in the hopper.
4. Unhook the rubber latch that holds the venturi bottom cover in place as indicated in
Figure 6-4.
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Adjustments & Service
5. Flip up the bearing clips indicated in Figure
6-5 at both ends of the lower metering rollers and remove the rollers.
6. Fully open the lower shut-off gate and allow the hopper to empty.
7. Reinstall the metering rollers and venturi covers.
8. Lower the clear shield.
If the ST-8 is set to Dual Bin mode, clean out the hopper as follows:
1. Open the clear shield and latch it in place.
2. Completely close all shut-off plates.
3. Place a container under the venturis sufficient to hold or transfer whatever material is left in either bin.
4. Unhook the rubber latch that holds the venturi bottom cover in place as indicated in
Figure 6-4.
5. Flip up the bearing clips indicated in Figure
6-5 at both ends of the metering rollers and remove all the rollers.
6. Fully open the lower shut-off gate and allow the bin to empty.
7. Empty the container and place it back under the venturis.
8. Open the upper shut-off plates fully and allow the bin to empty.
9. Reinstall the metering rollers and venturi covers.
10. Lower the clear shield.
Manifold & Venturi Cleaning
Clean manifolds and venturis are essential to trouble-free product application. Debris in these areas, such as caked-on product or straw, may restrict air and product flow and cause plugging.
To inspect the manifold, remove the rubber plugs found on each end of the manifolds as indicated by the arrow in Figure 6-6.
Valmar
Figure 6-6: Manifold Plug
The venturis can be more easily cleaned by removing the venturi bottom covers as shown in
Figure 6-4. This will allow any caked-on product that is removed to fall through the venturis.
Air Delivery Hoses
Inspect the hoses that deliver product from the venturis to the drop tubes for wear and cakedon product. Hoses with holes should be replaced. Replace one hose at a time so that each one can be cut to the correct length and positioned correctly.
Post-Season Maintenance
Before storing the applicator after the season of use, check the following areas:
1. Remove the metering rollers and clean them.
2. Thoroughly clean the inside of the hopper.
3. Purge the delivery system of all material by running the fan at operating speed.
4. Lubricate all roller chains.
Pre-Season Maintenance
Before using the applicator for the season, check the following areas:
1. Inspect the hopper, venturis, manifolds and delivery hoses for debris. Clean if necessary.
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2. Run the fan at operating speed and check the airflow in each delivery hose.
3. Run the metering system. If any bearings are binding or dragging, replace them.
Adjustments & Service
Page 25
Troubleshooting VALMAR
7 – Troubleshooting
Should you encounter problems with your applicator, this chapter lists possible causes and solutions. If the problem persists even after taking the steps recommended here, call your Valmar dealer. Before you call, have this operator’s manual and the applicator serial number ready.
Problem Cause Solution
The rate of product being applied is lower that expected.
Product density has changed resulting in a discrepancy with the charts.
Calibrate your applicator.
Mathematical error made during calibration.
Mistake made while weighing calibration sample.
Actual acreage covered less than expected.
Recheck calculations.
Weigh sample again.
Recheck field size.
Tractor wheel slippage may be causing an incorrect odometer reading.
Replace damaged bearings.
The rate of product being applied is higher than expected.
Damaged bearings are causing the metering system to drag.
Metering rollers caking up with product.
Metering rollers are worn out.
Product density has increased while machine is moving.
Clean rollers.
Replace rollers.
Recheck product density and calibrate the applicator.
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Problem
Product shooting out of the venturis; venturis filling up and spilling over.
Cause
Obstruction in the venturis and delivery hoses.
Fan speed too low.
Troubleshooting
Solution
Remove the obstruction.
Increase hydraulic oil flow to fan motor.
Replace hose. Hose from fan to manifold torn.
Water in hopper and/or fan causing product to stick to venturis or delivery hoses.
Clean out and wash the hopper and manifold. Run the fan to blow-dry the delivery system.
Application rate is exceeding the capacity of the venturis at that particular ground speed.
Metering system will not operate. Hydraulic motor will not turn.
Choose slower ground speed.
Oil flow bypasses the hydraulic motor.
Check hydraulic couplers for proper connection. Check rate controller for proper programming.
Check metering drive components for obstructions or damage.
Page 27
Assembly & Options VALMAR
8 – Assembly & Options
Assembly
Your ST-8 applicator is mostly factoryassembled and needs very little further assembly except for the following areas. Read through these instructions before attempting any installation.
Left and right are determined from the position of the operator facing in the direction of travel
Hydraulic Hoses
Hydraulic hoses and couplers for coupling to the hydraulic fan drive and the hydraulic metering drive must be purchased separately. Ensure that all hoses and couplers are clean. Keep in mind the following when installing them:
1. Use ½” ID hoses up to 18 feet in length and
¾” ID hoses for lengths over 18 feet for pressure and return lines. This will minimize pressure losses. The case drain line should be 3/8” ID.
2. Ensure that the hoses have a minimum rating of 2500 psi continuous duty.
3. The minimum flow requirement for your tractor’s hydraulic system is 20 gpm (U.S.).
4. Avoid routing hydraulic hoses where they could snag or kink. Secure them to the implement with tie straps.
5. The ends of the hoses that attach to the pressure and return ports for the hydraulic fan drive will require 37° flare (JIC) female fittings, ½” nominal size (dash 8), 3/4-16
Page 28
threads. The end of the hose that attaches to the case drain requires a 37° flare (JIC) female fitting, 3/8” nominal size (dash 6)
9/16-18 threads. A hose must be attached
to the case drain for proper motor operation with a maximum pressure of
43 psi. See Figure 8-1 for correct attachment of the hydraulic lines to the fan motor.
6. After hookup, operate the hydraulic fan drive and the metering drive at low speed for 15 minutes to purge out any air and to break in the hydraulic motor. Failure to do so could result in hydraulic motor damage.
Figure 8-1: Fan Hydraulic Hose Hookup
VALMAR Assembly & Options
7. The ends of the hoses that attach to the ports of the Char-Lynn hydraulic metering drive motor (Kit # 18.13855) will require 37° flare (JIC) female fittings, ½” nominal size
(dash 8), 3/4-16 threads. See Figure 8-2 for correct attachment of the hydraulic lines to the motor. Be sure that product meters from the bottom of the metering roller when the metering drive is engaged. The motor for the hydraulic metering drive has a displacement of 11.3 cubic inches.
Figure 8-2: Char-Lynn Metering Drive Hose
Hookup
Rawson Drive System
Complete instructions for the assembly of a
Rawson metering drive system are contained within the kit itself (Kit # 18.13880). Although some hoses are contained in the kit, a pressure line, return line and case drain line will need to be purchased separately.
Diffuser Kits
Diffuser kits can be purchased which mount near the strip till seed boot. The diffuser allows air to escape from the delivery hose to avoid creating back pressure at the seed boot.
18.12917 8 Row Kit (use 2 for 16 rows)
18.12918 12 Row Kit
18.13881 6 Row Kit
Page 29
Assembly & Options VALMAR
Page 30
Valmar Specifications
9 – Specifications
304 Stainless steel welded Hopper
Capacity
Weight (empty)
Fan
Fan Drive
Metering System
Metering Drive
245 Cubic Feet (11,025 lbs @ 45 lbs/cubic foot)
Hopper can be split 60/40
1950 pounds
18 inch aluminum impellor
Hydraulically driven
Motor displacement: .73 cubic inches per revolution
Minimum oil flow requirement is 20 U.S. gallons per minute
Case drain hose required. Maximum case drain pressure: 43 psi.
4 stainless steel metering rollers
Shut-off gate for each metering roller
Optional 6, 8, 12 or 16 outlet stainless steel manifold and venturi sets
Hydraulically driven
Char-Lynn Motor displacement: 11.3 cubic inches per revolution
Requires a separately purchased metering rate controller for accurate product application.
Rawson Drive System
Comes with mounting hardware to install a Rawson metering drive system. Rawson components must be purchased separately.
Page 31
Specifications Valmar
Page 32
VALMAR Parts
10 - Parts
Page 33
Parts VALMAR
FAN ASSEMBLY
ITEM PART NO. DESCRIPTION QTY.
1
2
3
03.13621
19.260
02.13194
Fan Housing
Impellor – 18”
Fan Cover (comes with screen)
4 11.13615 Bushing – P1 X 25 mm (2009 & newer) 1
11.12684 Bushing – P1 X 25 mm 1
5 12.12803 Hose – Tigerflex 4” X 29” 2
6 17.391 Hose Clamp – HS 64 4
7 23.13616 Spacer (2009 & newer) 1
23.13123 Spacer 1
8 23.13617 Bolt M10 X 40 mm SS 1
23.12896 Bolt M6 X 35 SS 1
9
10
23.12897
03.755
Flatwasher SS ¼ ID x 1 ¼ OD
Screen – Fan Cover
1
1
1
1
1
Page 34
VALMAR Parts
7
8
9
3
4
5
6
ITEM
1
2
PART NO.
13.13614
13.11450
13.12401
13.13119
13.1832
13.245
13.1675
13.244
13.12687
HYDRAULIC FAN DRIVE
DESCRIPTION
Hydraulic Motor – Rexroth 12 cc
Fitting – 06 JIC X 06 ORB Elbow
Fitting – 08 JIC X 12 ORB
Hydraulic Hose – 08 JIC X 8”
Fitting – ½ NPT Tee
Fitting – 08 JIC X ½ NPT
Fitting – ½ NPT Nipple
Check Valve – ½”
Hydraulic Hose – 08 JIC X 30”
QTY.
2
4
2
1
1
1
1
2
1
Page 35
Parts VALMAR
Page 36
9
10
11
12
13
14
15
16
5
6
7
8
2
3
4
VALMAR Parts
BOTTOM & METERING ROLLER ASSEMBLY
PART NO. DESCRIPTION QTY ITEM
1 03.13554
17.299
11.1408
11.1566
Bottom Assembly
Rubber Latch
Bearing – Hex Bore
Gear – 16T
2
2
8
4
23.13676
15.1782
23.12701
03.4066
Shaft - Bottom
Bearing Housing - RH
Shut Off Plate
Metering Roller – 12 Groove
4
4
4
4
14.239
03.6118
09.964
02.13759
23.12280
17.1741
03.12706
15.1783
Bearing – 1”
Gear – 56 tooth
Spring - Compression
Clear Shield
Spring Pin 5/32 X 1 1/2
Latch – Bearing Retainer
Coupler
Bearing Housing – LH
8
4
4
2
16
8
2
4
Page 37
Parts VALMAR
Page 38
5
6
7
4
8
9
10
11
12
12
13
14
2
3
1
VALMAR Parts
MANIFOLD ASSEMBLY
PART NO. DESCRIPTION QTY ITEM
02.13882
02.12642
02.12643
02.12644
Kit – 6 Outlet *
Kit – 8 Outlet *
Kit – 12 Outlet *
Kit – 16 Outlet *
03.13886
03.12799
03.12696
03.12821
Venturi – 3 Outlet
Venturi – 4 Outlet
Venturi – 6 Outlet
Venturi – 8 Outlet
2
2
2
2
03.13890
03.13891
03.12810
03.12811
03.12720
03.12721
03.12827
03.12828
15.13896
15.12812
Manifold – 3 Outlet – RH **
Manifold – 3 Outlet – LH
Manifold – 4 Outlet – RH
Manifold – 4 Outlet – LH
Manifold – 6 Outlet – RH
Manifold – 6 Oultet – LH
Manifold – 8 Outlet – RH
Manifold – 8 Outlet – LH
Seal – Manifold/Venturi 3 Outlet
Seal – Manifold/Venturi 4 Outlet
1
1
1
1
1
1
1
1
2
2
15.12717
15.12830
15.7837
23.14010
23.12716
17.1802
02.11844
23.12813
23.12715
23.12829
12.12652
04.12833
12.10589
12.12835
13.13873
23.8824
Seal – Manifold/Venturi 6 Outlet
Seal – Manifold/Venturi 8 Outlet
Plug - Manifold
Bracket – Rubber Latch
Receiver – Cover Plate
Rubber Latch - Short
Lanyard - Cover
Cover Plate – 4 Outlet Venturi ***
Cover Plate – 6 Outlet Venturi
Cover Plate – 8 Outlet Venturi
Water Column Pressure Gauge
Plate – Gauge Mount
Connector - 90° ¼ Tube
Hose – ¼ X 114”
Reducer Bushing – Brass ¼ X 1/8
Fitting – ¼ NPT Plug SS
*Kits consist of complete Venturis and RH and LH Manifold assemblies.
**RH Manifolds shown
***4 Outlet Venturi cover plate is also used for 3 outlet venturi
2
2
2
2
2
4
2
2
2
2
1
1
1
1
1
2
Page 39
Parts VALMAR
Page 40
VALMAR Parts
HOPPER & LIDS
7
8
9
10
11
12
13
14
15
16
3
4
5
6
ITEM
1
2
PART NO.
03.13600
03.13717
23.5966
18.13856
23.9719
17.299
15.13746
03.13670
03.13934
03.13610
15.12736
17.12745
03.12744
03.13611
03.12743
23.10689
15.229
DESCRIPTION
Hopper
Screen - Hopper
Handle - Screen
Screen Kit
Bracket - Rubber Latch
Rubber Latch
Handle – Rubber
Handle – Lid LH
Handle – Lid RH
Lid
Roller - Lid
Push Nut – ½”
Rail - LH
Stabilizer – Lid
Rail – RH
Latch Handle
Sight Glass
QTY
2
2
2
1
1
1
2
2
2
2
2
2
2
4
2
4
4
Page 41
Parts VALMAR
Page 42
VALMAR Parts
PLATFORM & LADDER
3
4
5
6
7
8
ITEM
1
2
PART NO.
03.13863
04.13641
03.12751
03.13439
03.13719
03.13671
03.13642
05.13329
DESCRIPTION
Platform
Mount - Platform
Ladder - Lower
Ladder - Upper
Handrail
Handrail
Ladder - Inner
Step
QTY
1
2
1
1
1
1
1
5
Page 43
Parts VALMAR
3
4
5
6
ITEM
1
2
PART NO.
18.12898
03.12900
03.12899
03.12907
03.12908
03.12901
03.12785
ORTHMAN FRAME – STEEL HOPPER
DESCRIPTION QTY
Kit – Orthman Mount (contains items 1 thru 5)
Brace – Side RH
Leg - Rear
Brace – Rear RH
Brace – Rear LH
Brace – Side LH
Front Support
1
2
1
1
1
1
Page 44
VALMAR Parts
5
6
7
2
3
4
ITEM
1
CHAR LYNN HYDRAULIC METERING DRIVE
PART NO.
03.13276
03.12841
14.6065
03.13272
03.13867
13.11003
13.10322
DESCRIPTION
Mount – Hydraulic Motor
Sprocket – 40B24 1”
Sprocket – 40B30 – ¾ Hex Bore
Shield - Short
Shield – Long
Hydraulic Motor – 11.3 CID
Fitting – 10 ORB X 08 JIC
QTY
1
2
4
2
2
2
1
Page 45
Parts VALMAR
RAWSON METERING DRIVE MOUNT
5
6
7
8
9
10
ITEM
1
2
3
4
11
12
13
14
PART NO.
03.13215
05.13278
14.13209
14.6065
02.13925
02.13832
08.12009
03.12005
14.4540
17.12008
08.12010
17.12011
04.13193
13.13281
DESCRIPTION
Mount – Hydraulic Motor
Bracket - Filter
Sprocket – 40B20 c/w Keyway
Sprocket – 40B30 – ¾ Hex Bore
Shield – Long
Shield - Short
Spacer
Sprocket Assembly – 32/13T
Bearing – 6203 2RS C3 17 mm Bore
Snap Ring N5000-156
Spacer
Washer
Driver Box Mount
Hydraulic Hose – ¼ X 68” (case drain)*
15
16
17
13.13282
13.10660
13.10566
Hydraulic Hose – ½ X 98” (pressure line)*
Tee – 06JIC (case drain at fan motor)*
Hydraulic Hose – ½ X 70 ½” **
*Not shown
** Not shown. Connects both Rawson motors.
Parts for Rawson components are available from your Trimble dealer.
Page 46
QTY
2
4
2
1
1
1
2
1
2
2
2
2
2
2
1
2
1
VALMAR Parts
3
4
5
6
ITEM
1
2
PART NO.
22.13879
22.5840
22.3921
22.3917
22.6143
22.3915
DECALS
DESCRIPTION
Decal – ST-8
Decal – Pesticide Hazard
Decal – Hydraulic Hazard
Decal – Rotating Part Hazard
Decal – Warning
Decal – General Caution
QTY
4
1
1
1
2
1
Page 47
Parts VALMAR
Page 48
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Key features
Hydraulically driven fan
Dual bins
Variable-speed metering drive
Precise application rates
Durable steel construction
Frequently asked questions
Calibration is essential for accurate application rates. Consult the Calibration chapter in this manual for detailed instructions.
The hopper has a capacity of 245 cubic feet, which can be split 60/40 between the front and rear bins.
The metering rollers can be adjusted for proper gap and tension. Refer to the Adjustments and Service section in this manual for detailed instructions.
The minimum flow requirement for your tractor's hydraulic system is 20 gallons per minute.
