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: valmar@valmar.com

Box 100 Elie, MB R0H 0H0 Phone (204) 353-2782 FAX (204) 353-2864 Email: valmar@valmar.com

Printed in Canada

Issue Date: April 2010 Part No. 20.13904

Page 1

VALMAR ST8 Applicator

Table of Contents

Item Page

Serial Number Location 3

1 - Introduction 4

2 - Safety 5

3 - Safety Decals 7

4 - Operation 11

5 - Calibration 17

6 - Adjustments and Service 21

7 - Troubleshooting 26

8 – Assembly and Options 28

9 - Specifications 31

10- Parts 33

Printing Date: May 2010

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

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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.

Valmar Safety

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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

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:

Safety Valmar

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1. Provide a first aid kit. Store it in a visible, accessible location and know how to use it.

2. Keep safety decals clean and legible at all times. Replace missing or damaged decals.

3. Before servicing, adjusting, repairing or unplugging the applicator, stop the tractor, set the park brake and wait for all moving parts to come to a complete stop.

4. Ensure that all guards and shields are in place. Replace any that are damaged.

5. Do not allow riders on the applicator. Granular Chemical Safety 1. Read and strictly follow the

manufacturer’s instructions found on the product container.

2. Wear chemically resistant clothing, gloves and safety goggles.

3. Avoid contact with skin and eyes. 4. Wear a respirator as directed by the

chemical manufacturer. 5. Wash thoroughly after working with

chemicals, especially before eating. 6. Wash all clothing contaminated by

chemicals. 7. 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. 2. Replace damaged hoses and fittings. 3. Use a piece of cardboard when trying to

pinpoint leaks. Wear heavy gloves and a face shield.

4. Have hydraulic components repaired by a qualified repair facility. Makeshift repairs may fail suddenly creating a hazardous condition.

5. If injured by a high pressure stream of hydraulic fluid, seek medical attention immediately. Serious infection can result.

Fan Safety 1. Do not operate the fan unless all shields

and guards are in place. 2. 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.

2. 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

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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.

Safety Decals Valmar

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Decal 1

Decal 2

Decal 5

VALMAR Safety

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Decal 3

Decal 4

Safety Decals Valmar

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Valmar Operation

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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.

Figure 4-1

Fan Rotation

FRONT HOPPER:

40% (98 ft³)

REAR HOPPER:

60% (147 ft³)

Operation Valmar

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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

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 Operation

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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 4-3: 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.

Figure 4-4: Lower Shut-Off Gate

Clearshield

Shut-off Gate

Operation Valmar

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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.

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 Operation

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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.

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.

Operation Valmar

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Valmar Calibration

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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.

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.

Calibration Valmar

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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.

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 Calibration

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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

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.

Calibration Valmar

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Figure 5-2: Sprocket Layout for Char-Lynn Hydraulic motor

Figure 5-3: Sprocket Layout for Rawson Drive System

Valmar Adjustments & Service

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6 – Adjustments & Service Servicing Precautions

WARNING

When servicing the ST-8 observe the following safety guidelines:

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.

5. Wear heavy gloves and a face shield when searching for suspected hydraulic

leaks. A high-pressure stream of hydraulic fluid can pierce the skin, resulting in infection and toxic reaction.

6. Never wear ill-fitting, frayed or baggy clothing when working around drive system components.

7. Replace all shields when service is complete.

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.

Adjustments & Service Valmar

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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.

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

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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.

Adjustments & Service Valmar

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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.

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 caked-on 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.

Valmar Adjustments & Service

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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.

Troubleshooting VALMAR

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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.

Recheck calculations.

Mistake made while weighing calibration sample.

Weigh sample again.

Actual acreage covered less than expected.

Recheck field size. Tractor wheel slippage may be causing an incorrect odometer reading.

Damaged bearings are causing the metering system to drag.

Replace damaged bearings.

Metering rollers caking up with product.

Clean rollers.

Metering rollers are worn out.

Replace rollers.

The rate of product being applied is higher than expected.

Product density has increased while machine is moving.

Recheck product density and calibrate the applicator.

VALMAR Troubleshooting

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Problem Cause Solution Product shooting out of the venturis; venturis filling up and spilling over.

Obstruction in the venturis and delivery hoses.

Remove the obstruction.

Fan speed too low. Increase hydraulic oil flow to fan motor.

Hose from fan to manifold torn.

Replace hose.

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.

Choose slower ground speed.

Metering system will not operate. Hydraulic motor will not turn. Check hydraulic couplers for proper connection. Check rate controller for proper programming.

Oil flow bypasses the hydraulic motor.

Check metering drive components for obstructions or damage.

Assembly & Options VALMAR

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8 – Assembly & Options

Assembly Your ST-8 applicator is mostly factory-assembled 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

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

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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

Assembly & Options VALMAR

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Valmar Specifications

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9 – Specifications Hopper 304 Stainless steel welded Capacity 245 Cubic Feet (11,025 lbs @ 45 lbs/cubic foot) Hopper can be split 60/40 Weight (empty) 1950 pounds Fan 18 inch aluminum impellor Fan Drive 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. Metering System 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

Metering Drive 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.

Specifications Valmar

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VALMAR Parts

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10 - Parts

Parts VALMAR

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FAN ASSEMBLY

ITEM PART NO. DESCRIPTION QTY.

1 03.13621 Fan Housing 1

2 19.260 Impellor – 18” 1

3 02.13194 Fan Cover (comes with screen) 1

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 23.12897 Flatwasher SS ¼ ID x 1 ¼ OD 1

10 03.755 Screen – Fan Cover 1

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HYDRAULIC FAN DRIVE

ITEM PART NO. DESCRIPTION QTY. 1 13.13614 Hydraulic Motor – Rexroth 12 cc 1 2 13.11450 Fitting – 06 JIC X 06 ORB Elbow 1 3 13.12401 Fitting – 08 JIC X 12 ORB 2 4 13.13119 Hydraulic Hose – 08 JIC X 8” 1 5 13.1832 Fitting – ½ NPT Tee 2 6 13.245 Fitting – 08 JIC X ½ NPT 4 7 13.1675 Fitting – ½ NPT Nipple 2 8 13.244 Check Valve – ½” 1 9 13.12687 Hydraulic Hose – 08 JIC X 30” 1

Parts VALMAR

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VALMAR Parts

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BOTTOM & METERING ROLLER ASSEMBLY ITEM PART NO. DESCRIPTION QTY

1 03.13554 Bottom Assembly 2 2 17.299 Rubber Latch 2 3 11.1408 Bearing – Hex Bore 8 4 11.1566 Gear – 16T 4 5 23.13676 Shaft - Bottom 4 6 15.1782 Bearing Housing - RH 4 7 23.12701 Shut Off Plate 4 8 03.4066 Metering Roller – 12 Groove 4 9 14.239 Bearing – 1” 8 10 03.6118 Gear – 56 tooth 4 11 09.964 Spring - Compression 4 12 02.13759 Clear Shield 2 13 23.12280 Spring Pin 5/32 X 1 1/2 16 14 17.1741 Latch – Bearing Retainer 8 15 03.12706 Coupler 2 16 15.1783 Bearing Housing – LH 4

Parts VALMAR

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VALMAR Parts

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MANIFOLD ASSEMBLY ITEM PART NO. DESCRIPTION QTY

02.13882 Kit – 6 Outlet * 02.12642 Kit – 8 Outlet * 02.12643 Kit – 12 Outlet * 02.12644 Kit – 16 Outlet * 1 03.13886 Venturi – 3 Outlet 2 03.12799 Venturi – 4 Outlet 2 03.12696 Venturi – 6 Outlet 2 03.12821 Venturi – 8 Outlet 2 2 03.13890 Manifold – 3 Outlet – RH ** 1 03.13891 Manifold – 3 Outlet – LH 1 03.12810 Manifold – 4 Outlet – RH 1 03.12811 Manifold – 4 Outlet – LH 1 03.12720 Manifold – 6 Outlet – RH 1 03.12721 Manifold – 6 Oultet – LH 1 03.12827 Manifold – 8 Outlet – RH 1 03.12828 Manifold – 8 Outlet – LH 1 3 15.13896 Seal – Manifold/Venturi 3 Outlet 2 15.12812 Seal – Manifold/Venturi 4 Outlet 2 15.12717 Seal – Manifold/Venturi 6 Outlet 2 15.12830 Seal – Manifold/Venturi 8 Outlet 2 4 15.7837 Plug - Manifold 4 5 23.14010 Bracket – Rubber Latch 2 6 23.12716 Receiver – Cover Plate 2 7 17.1802 Rubber Latch - Short 2 8 02.11844 Lanyard - Cover 2 9 23.12813 Cover Plate – 4 Outlet Venturi *** 2 23.12715 Cover Plate – 6 Outlet Venturi 2 23.12829 Cover Plate – 8 Outlet Venturi 2 10 12.12652 Water Column Pressure Gauge 1 11 04.12833 Plate – Gauge Mount 1 12 12.10589 Connector - 90° ¼ Tube 2 12 12.12835 Hose – ¼ X 114” 1 13 13.13873 Reducer Bushing – Brass ¼ X 1/8 1 14 23.8824 Fitting – ¼ NPT Plug SS 1 *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

Parts VALMAR

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VALMAR Parts

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HOPPER & LIDS ITEM PART NO. DESCRIPTION QTY 1 03.13600 Hopper 1 2 03.13717 Screen - Hopper 2 3 23.5966 Handle - Screen 2 4 18.13856 Screen Kit 2 5 23.9719 Bracket - Rubber Latch 2 6 17.299 Rubber Latch 2 7 15.13746 Handle – Rubber 2 8 03.13670 Handle – Lid LH 1 03.13934 Handle – Lid RH 1 9 03.13610 Lid 2 10 15.12736 Roller - Lid 4 11 17.12745 Push Nut – ½” 4 12 03.12744 Rail - LH 2 13 03.13611 Stabilizer – Lid 2 14 03.12743 Rail – RH 2 15 23.10689 Latch Handle 2 16 15.229 Sight Glass 4

Parts VALMAR

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VALMAR Parts

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PLATFORM & LADDER ITEM PART NO. DESCRIPTION QTY 1 03.13863 Platform 1 2 04.13641 Mount - Platform 2 3 03.12751 Ladder - Lower 1 4 03.13439 Ladder - Upper 1 5 03.13719 Handrail 1 6 03.13671 Handrail 1 7 03.13642 Ladder - Inner 1 8 05.13329 Step 5

Parts VALMAR

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ORTHMAN FRAME – STEEL HOPPER

ITEM PART NO. DESCRIPTION QTY 18.12898 Kit – Orthman Mount (contains items 1 thru 5) 1 03.12900 Brace – Side RH 1 2 03.12899 Leg - Rear 2 3 03.12907 Brace – Rear RH 1 4 03.12908 Brace – Rear LH 1 5 03.12901 Brace – Side LH 1 6 03.12785 Front Support 1

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CHAR LYNN HYDRAULIC METERING DRIVE

ITEM PART NO. DESCRIPTION QTY 1 03.13276 Mount – Hydraulic Motor 2 2 03.12841 Sprocket – 40B24 1” 2 3 14.6065 Sprocket – 40B30 – ¾ Hex Bore 2 4 03.13272 Shield - Short 1 5 03.13867 Shield – Long 1 6 13.11003 Hydraulic Motor – 11.3 CID 2 7 13.10322 Fitting – 10 ORB X 08 JIC 4

Parts VALMAR

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RAWSON METERING DRIVE MOUNT

ITEM PART NO. DESCRIPTION QTY 1 03.13215 Mount – Hydraulic Motor 2 2 05.13278 Bracket - Filter 1 3 14.13209 Sprocket – 40B20 c/w Keyway 2 4 14.6065 Sprocket – 40B30 – ¾ Hex Bore 2 5 02.13925 Shield – Long 1 6 02.13832 Shield - Short 1 7 08.12009 Spacer 1 8 03.12005 Sprocket Assembly – 32/13T 2 9 14.4540 Bearing – 6203 2RS C3 17 mm Bore 4 10 17.12008 Snap Ring N5000-156 2 11 08.12010 Spacer 2 12 17.12011 Washer 2 13 04.13193 Driver Box Mount 2 14 13.13281 Hydraulic Hose – ¼ X 68” (case drain)* 2 15 13.13282 Hydraulic Hose – ½ X 98” (pressure line)* 1 16 13.10660 Tee – 06JIC (case drain at fan motor)* 2 17 13.10566 Hydraulic Hose – ½ X 70 ½” ** 1 *Not shown ** Not shown. Connects both Rawson motors. Parts for Rawson components are available from your Trimble dealer.

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DECALS

ITEM PART NO. DESCRIPTION QTY 1 22.13879 Decal – ST-8 4 2 22.5840 Decal – Pesticide Hazard 1 3 22.3921 Decal – Hydraulic Hazard 1 4 22.3917 Decal – Rotating Part Hazard 1 5 22.6143 Decal – Warning 2 6 22.3915 Decal – General Caution 1

Parts VALMAR

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