FAQ's

General

Do Goldacres make a range of spray equipment?

Yes, Goldacres make the largest range of spray equipment available in Australia such as: 12 volt, 3 Point Linkage, Traymounts, Small, Medium and Large Trailing Sprayers and Self Propelled.

What is the warranty period?

The standard warranty period is 12 months / 1000 hours. Self Propelled’s have 2 years / 2000 hours on some components - for further information please contact Goldacres.

How fast can I spray?

For optimum spray results, the speed at which you spray should be matched to the ground and weather conditions and the product being applied. Nozzle manufacturers recommend speeds for optimum performance which are much slower than normally adopted in Australia.

Are Goldacres sprayers Australian made?

Yes, all Goldacres spraying equipment is Australian made. Goldacres has alliances with many international spraying component manufacturers which assists in the production of world class equipment.

Can I visit the factory to see the sprayers being built?

Yes, we encourage visits to our factory to allow a good understanding of what goes into your sprayer and how it is built. It allows us to answer any questions that you have and advise you on what spraying technology may be suited your operation.

What is GAS (Goldacres Accredited Service)?

GAS guarantees a consistent level of services and support to customers via the Dealer network. Accredited service technicians ensure the customer is familiar and comfortable with all aspects of their sprayer and will support the customer with any service or maintenance requirements.

Who is a GAS technician?

This is a technician who has completed the Goldacres training course at the Goldacres factory and has qualified as a fully trained Goldacres Service Technician.

Are Goldacres sprayers safe to use?

Goldacres engineers design our sprayers to the highest safety standards. Each model is assessed for safety using the Worksafe Victoria guidelines for plant and equipment. A copy of this assessment is available upon request from Goldacres.

What corrosion protection does Goldacres have?

Goldacres paint is an epoxy modified, acrylic melamine based topcoat containing pigments of high opacity and colour retention. It features excellent gloss, excellent mar resistance (the resistance of material to abrasive action), tough and flexible and excellent resistance to chemicals. Goldacres have taken steps to ensure sprayers are well protected against corrosive substances. The Goldacres paint process includes shot blast surface preparation, followed by primer, two specially formulated acrylic liquid top coats and then oven baking at 130ºc. This ensures an exceptionally good finish and excellent chemical resistance. Where possible stainless steel bolts are used and all bolts are sprayed with a high quality, G15 brand, rust preventative. In highly exposed areas covers are fitted to ensure even more protection. It remains important that the sprayer is washed down thoroughly following the use of corrosive substances, such as liquid nitrogen, and then recoated with G15 as an extra safety measure. Goldacres have the most comprehensive paint process used in the sprayer industry to provide you with the most durable and chemical resistant paint finish available.

Goldacres paint process has a high degree of mar and is subjected to the following tests:

  1. Scratch test. A scratching tool is used to cut lines through the paint surface. The paint must not chip but cut into surface lines
  2. Flexibility test. The paint surface is twisted to ensure good adhesion.
  3. Chemical resistance. Goldacres paint has been tested in chemicals including UAN to ensure maximum chemical resistance.
  4. Regular tests are done to ensure consistent paint thickness.

What is G15?

Originally developed for industry, G15 is a soft film long term rust preventative that’s designed to be used on all types of metal to create an almost impenetrable moisture barrier. This makes it the perfect product to keep your machinery rust free and resistant to agricultural chemicals. It has been proven to withstand exposure to sunlight as well as salt spray. G15 is not an oil, but a thixotropic gel, it sprays as a liquid and then solidifies as a film. It’s also non-staining and won’t dry out and can be used inside machinery as well as on metal surfaces. G15 is a water displacing, lubricant and rust preventative suitable for all metals. It is a contact inhibitor which when applied to the metal surface forms highly polar microscopic platelets, a “fish scale” like structure which provides a soft but virtually impenetrable moisture barrier.

  • G15 provides long term corrosion protection
  • Is thermally stable -40ºc to + 260ºc without cracking, chipping, peeling or sagging
  • Is thixotropic and therefore will not sag or run off. G15 holds onto sharp edges
  • Is UV resistant and has been tested for exterior exposure under adverse conditions and has passed such tests without failure
  • Has good water displacing properties
  • Can be used as a general purpose lubricant
  • Does not stain metal surfaces
  • The application of G15 on metal surfaces will not impair welding arc or oxyacetylene or affect weld strength

Can I use the sprayer to apply fertilisers such as liquid nitrogen?

Yes, Goldacres sprayers, when used with the correct nozzles and care, can be used to apply liquid fertilisers. All chemicals have corrosive properties to some degree. Prevent damage to the machine by always consulting the chemical MSDS or the chemical supplier for advice concerning the corrosive properties of the chemical. It is the responsibility of the operator to carry out preventative and ongoing maintenance to the machine, particularly while applying chemicals with highly corrosive properties, such as liquid nitrogen. Machine components should be coated with G15 prior to use. Once washed down, G15 should be re-applied.

Weight of liquid nitrogen?

Liquid Nitrogen weighs 1.28 times that of water and this needs to be allowed for when calculating gross vehicle weight.

Crop Cruiser

Why do Goldacres fit mechanical drive?

There are many reasons why mechanical drive is more suited to broadacre agricultural sprayers. We fit mechanical drive because it is a simple, low maintenance, flexible drive system that’s been proven over hundreds of thousands of operational hours across Australia. Our mechanical drive has an extremely narrow leg profile and can provide an “on the go” track width adjustment system which can be in metric measurements made to suit Australian farming requirements.

Fuel economy - The fuel economy reports on Crop Cruisers are extraordinary. Operators consistently record usage as low as 11 litres per hour in good conditions - and below 30 litres per hour in extreme conditions. Compare the fuel consumption of the big engine hydraulic drive machines and you will realise the fuel savings. The efficiencies of the mechanical drive is one reason for this fuel economy. Mechanical drive allows the engine to run at much lower revs than hydraulic drive systems which need HIGH engine revs resulting in increased fuel consumption.

Gross weight - A low gross weight pays dividends. The Crop Cruiser is up to 30 per cent lighter than other machines in the class and this combined with an efficient drive system and lower engine rev requirement delivers an extremely fuel efficient sprayer.

Engine - An efficient drive system and low gross weight allows us to use a smaller engine - anyone with any doubt about the power of the Cummins engine only needs to drive a Crop Cruiser to be reassured. We believe we have the highest power to weight ratio in their class with all models.

Maintenance & resale - There are two other important areas of saving in a mechanical drive. Firstly, the drive does not require maintenance to the same levels as a hydro. Frequent changes of expensive oil and filter systems, and adjustments are not required. Secondly, and most importantly, the resale value of Crop Cruisers remains high as potential buyers understand that they are not going to be faced with reconditioning costs of hydrostatic drives.

What are the advantages of hydrostatic drive?

It is easier to design a sprayer with a hydraulic motor drives. A hydraulic drive motor makes it easier to build a track adjustable axle, and the dropleg can be made as long or short as required. Also a hydrostatic drive allows the machine to operate at higher engine revs, and a very slow forward speed - which is required in some horticultural applications. A hydrostatic driven machine can also travel quickly backwards without changing gear - again sometimes a horticultural requirement. The assembly time and cost of a building a hydraulic drive system is also less than mechanical drive. These features remain a benefit to manufacturers, and some specialist users, but not to broadacre sprayer users.

Can I adjust the track width?

Most models are available with the option of either 2m to 3m adjustment or 3m to 4m.Track adjustment can be either manual or hydraulic.

What drive options are available?

Two and four wheel drive models.

Fuel consumption is not an issue for me

Perhaps. You will consume fuel no matter which machine you choose - however we have received reports that different models will consume significantly more fuel than the Crop Cruiser. The Goldacres Crop Cruiser will consume up to 3000 litres less fuel every 100 hours you spray. If you have a fuel price of $1.50 per litre, you could save up to $3750 every 100 hours you spray is likely to make fuel consumption an issue for you, and your customers. Another way of calculating fuel consumption savings is to assess the possible term of ownership of the sprayer. If an operator kept his machine for three years and operated for 1000 hours per year, saving 30 lt/hour could amount to approximately 90,000 litres of fuel during the period of ownership.

Future considerations - It is also worth considering the importance of fuel consumption at the end of the period of ownership when the trade-in value is paramount - moreso when the fuel price trend is upward. This makes fuel consumption an even more important consideration in the future. A further consideration is the time saved on less fuel transfer operation - as much as 30,000 litres per 1000 hours.

Mechanical drive vs hydrostatic drive power transmission

There are big differences between mechanical and hydraulic drive systems. With a four wheel drive vehicle, or tractor, the drive is mechanical to the four wheels. In a four wheel drive hydrostatic sprayer the drive is available to the four wheels, but in a bogging situation the oil is directed to the wheel motor with the least resistance.

Is a Crop Cruiser going to hold its resale value?

Demand for secondhand Goldacres sprayers is very high, so resale value is very good. Goldacres reduced maintenance requirements, mechanical drive and advanced spraying technology make them highly sought after used machines.

How is machine weight going to be a problem for me?

A heavy machine can have numerous impacts on your spray application and efficiency. Issues such as compaction, “rutting” of tramtracks, bogging and excessive fuel consumption can often be a result of a machine which is heavy.

Why does the fixed track Goldacres self propelled turn so cleanly?

Goldacres fixed track Crop Cruisers have a mechanical steering link (tie rod) which can be adjusted for correct wheel alignment and optimal tyre life. This mechanical link also allows proper steering Ackerman angle for clean headland turning. When track adjustment is fitted to a sprayer a hydraulic link replaces the tie rod. This does not allow the accurate alignment of a tie rod and requires frequent re-phasing. Also because the Ackerman angle is not the same over different track settings, correct turning angles are compromised.

Ackerman Steering Principal - The alignment of the king pin to the steering arm connection must follow to the centre line of the rear axle. This alignment will change with different wheel tracks.

Do Goldacres sprayers have sufficient power?

Yes, we provide you with the perfect combination of power and economy which results in the Crop Cruisers having the highest power to weight ratio in their class. Machines that are hydrostatically driven are often excessively heavy - they require higher horsepower, larger fuel and oil tanks which contribute to the additional weight. A hydrostatic drive system takes up a large amount of the engine’s capacity immediately - combine this with heavier gross weight and it is obvious why these machines require more horsepower. The Crop Cruiser is lighter and has a highly efficient mechanical drive resulting in a lower horsepower requirement and lower fuel consumption.

Will I be trained in the use of the machine?

A dealer trained Goldacres Accredited Service (GAS) technician will train you in the use of the machine to ensure you are completely comfortable with the operation, maintenance and servicing of the equipment. Prior to delivery of the machine, all operators are welcomed to the Goldacres factory to see their machine in the final stages of production. It is of utmost importance that you are completely familiar with the sprayers operation after taking delivery. A comprehensive operator manual is also included for future reference.

What level of backup support will I get with my purchase?

Goldacres want to ensure that all customers have a complete understanding of our products and receive the highest levels of support, for this reason we have introduced the industry leading Goldacres Accredited Service (GAS) program. Goldacres service technicians complete comprehensive training to become a GAS technician - giving them the necessary skills to support your equipment. This training will ensure your get accurate service and parts support. GAS technicians and the Goldacres Customer Care program are in place to ensure that you get all the support you need.

Are the brakes on the Crop Cruiser adequate?

Yes, Crop Cruisers are fitted with massive four wheel disc brakes operating through two independent circuits which have excellent stopping power. The lighter gross weight Crop Cruiser G3 is fitted standard with rear disc brakes while four wheel disc brakes are an option. When evaluating a self propelled sprayer check the braking system to ensure that it will meet all your safety requirements.

Will I get parts when I need them?

Goldacres spraying equipment is manufactured in Australia. This ensures that all common parts should be available locally through your dealer, or for any less common parts, available from Goldacres manufacturing plants which ensures you will not have lengthy delays waiting for parts to come in from overseas. Major driveline components are supplied by well known brands such as Cummins, Rexroth and Allison who also have Australia wide service and support.

Can Goldacres build a machine to my requirements?

Being an Australian designed and manufactured machine, Goldacres will provide you with the greatest range of options available. The Goldacres factory is always open for factory tours and specialist support from Goldacres and dealer sales representatives will ensure you get all the advice you need to make an informed decision.

Safety?

All G5 and larger Crop Cruisers are fitted with ROPS approved cabins.

Wheel rims and tyre carrying capacity?

Goldacres has paid particular attention to having rims, axles and tyres which are correctly specified for the loads and speeds they are supporting. A self propelled sprayer by its nature, carrying a large load with a high centre of gravity, puts extreme loads on tyres and rims and ideally they should be overrated for a fully loaded sprayer.

Could Goldacres fit a windrower on a front mount linkage?

No. This sounds like a good idea until some further investigation. Trying to turn a sprayer into a windrower creates many issues. A self propelled windrower pivots with the rear wheels, while a sprayer steers with the front. Obviously this pulls the cutter bar sideways which cannot be rectified. A self propelled windrower has wide, small diameter, load carrying tyres to support the substantial weight of a windrower. A sprayer has large, narrow diameter, tyres designed for minimum crop damage, not load carrying.

Hydraulics - A windrower has unique hydraulic requirements, which can require a substantial modification of a hydraulic system designed to operate a sprayer. Driving the cutter bar, driving the reel with speed adjustment, raising and lowering the cutter bar and the reel, compensating for side movement etc.

Attachment - The attachment between the vehicle and the windrower is complex, which permits the windrower to ‘float’ over undulating ground and allow a degree of ‘roll’. The attachment also has to provide a degree of suspension, between the vehicle and the windrower. All these issues need to be addressed to produce a multi purpose vehicle, and we believe some of the important ones cannot be covered, so we have made the decision not to go down this path.

Do Goldacres fit front mounted booms on self propelled sprayers?

No, a front mount boom has only one advantage over rear mount, in that it is easier for the operator to see the boom.

GPS guidance - Now most sprayers are fitted with some form of GPS guidance, eliminating the need to be constantly monitoring the boom position. The negative effects of a front mount boom are many. The machine is traveling continuously in a spray cloud depositing chemical on the underside of the machine, filter bowls, taps, ladder, hoses etc and putting additional load on the chemical filter for the air-conditioner. Spray material drifting back can also contribute to excessive corrosion of machine electrics. This can be an issue on a machine with a rear mount boom, but is amplified and much more serious with front mounting. A front mount boom also creates visibility issues when in the transport position.

TriTech & Delta Booms

Why is boom ride and stability so important?

A boom which bounces, sways or yaws deposits chemical unevenly on the target. This can result in weed escapes and may even contribute to resistant weeds. Goldacres booms have been consistently rated the most stable boom in the Australian market by independent testing authorities.

What is the difference between contour following and self leveling booms?

Goldacres booms are contour following which means that the boom follows on the same plane as the sprayer axle - as the sprayer travels over contours the boom follows. A self leveling boom uses gravity to remain level - therefore as a sprayer travels over contours, with a self leveling boom, the boom would require adjustment by the operator to prevent ground strike.

What size boom is the most suitable?

This is something that is unique to your property and application. You should not simply choose the biggest boom size available - you need to consider how practical the boom will be across your terrain and how it matches up with other equipment on your property. The effect of directional changes obviously increases with bigger booms. Wider booms are more prone to application rate variability on the outer sections, and the yaw effect increases exponentially as weight and length increase. When selecting the most suitable boom for the job the objective should be to choose the one which will provide the best chemical placement, resulting in the best chemical performance, not necessarily the boom which will cover the most amount of area in a day.

How is Goldacres boom ride different?

Boom ride varies greatly between different manufactures machines. Goldacres TriTech and Delta booms have 3 way suspension which actively works to reduce yaw (forward and backward), pitch (up and down) and roll movement of the boom when spraying. Booms that move excessively when in operation apply inaccurately - affecting the quality of the spray job, and long term life of the boom, as well as contributing to potential chemical resistance. Goldacres booms have been tested in different conditions and applications throughout Australia - operators and independent testing has continually resulted in the Goldacres boom having the best boom ride measured.

What is TriTech suspension?

The Goldacres TriTech suspension system has been developed to provide you with the best boom ride possible and assist in an accurate application. The boom features three way suspension that works to reduce boom pitch, roll and yaw - the three enemies of accurate application. A combination of springs and shock absorbers, as well hydraulic cylinders and accumulators all work together to provide the best boom ride possible. The TriTech suspension system has contributed to Goldacres consistently having the best boom ride when measured against competitor machines. (as reported in Farming Ahead magazine. Kondinin Group - data available from Goldacres upon request).

What is the difference with the TriTech and Delta booms?

The suspension and construction of the booms are different. The sizes available are also a difference - the Delta is available in sizes from 12 - 24m and the TriTech is available from 24 - 42m in width. Goldacres suggest the Delta boom for medium size applications. For heavy duty and high use applications Goldacres suggest the TriTech boom.

Why do Goldacres use a cable fold mechanism on many booms instead of hydraulic cylinders?

Goldacres cable fold system is an efficient way to fold the outer boom out and in, and also acts as a secondary breakaway system which allows the outer wing to move backward when an obstruction is hit. This greatly reduces damage to the boom compared with a completely rigid fold.

Sprayer stability is affected by yaw movement of the boom

Large booms when yawing backwards and forwards can influence chassis stability. This can affect GPS steering causing an overreaction to corrections. Goldacres unique boom yaw suspension separates boom movement from the tanker so boom movement does not impact on directional stability.

Can Weedseeking sensors be fitted to Goldacres booms?

Yes, Weedseeking systems such as Weedseeker and Weed-it, can be factory fitted on Goldacres TriTech booms. Goldacres can fit a height control system to assist in maintaining the accurate height required for weedseeker operation. In addition dual product system which is also needed for Weedseeker can be fitted.

What options are available to limit boom damage from ground strikes?

Occasional ground strikes are hard to stop with large booms, Goldacres offer boom end protectors that provide protection to the front and bottom of the boom at the tips. Ultrasonic boom height leveling is also available on selected models - with this system a series of sensors, mounted on the boom, electronically control the height of the boom above the ground. This reduces the work required by the operator to maintain boom height.

Is the three dimensional breakaway available on all Goldacres booms?

The three dimensional breakaway is standard on TriTech booms between 24 and 42m and an option on the 24m Delta boom. Goldacres three dimensional breakaway protects the boom by breaking up, backward and forwards when an obstruction is hit.

Why don’t Goldacres fit touchdown wheels as standard?

The Goldacres boom has been designed to provide the best possible boom ride without the use of touchdown wheels as standard. Goldacres offer touchdown wheels as an option if required. Touchdown wheels are set about 150mm above the ground and only touchdown occasionally. They are not set to continually run on the ground.

Why are Goldacres outer boom sections constructed from aluminium?

Aluminium is lightweight which reduces the overall boom weight and stress on all components as well as improving the boom ride and stability when in operation. The lighter weight reduces the inertial forces on the boom centre section, making it easier to control yaw movement of the boom, reducing over and under application, a major contributor to poor chemical performance. Aluminium also offers an extremely high level of chemical resistance which assists in achieving a long boom life.

How long have aluminium booms been available?

Aluminium booms have now been a major feature on the larger Goldacres booms since 1995. The result being an exceptionally well suspended boom with superior boom ride and long service life. The repair, and replacement, cost of aluminium is not expensive. Aluminium booms are no more expensive than steel and do not require painting.

Why isn’t the entire boom made of aluminium?

Goldacres engineers have found that the lightweight aluminium outers and high strength steel centre section and inners is the ultimate blend of weight and strength.

Is individual wing tilt available?

Hydraulic wing tilt is available as an option on all models. Wing tilt will allow the operator to tilt the boom to follow contours or miss obstructions as required. Each side can be independently tilted with simple control from the cabin. (Wing tilt is required if Ultraglide is fitted.)

Can I spray with one wing open and one wing closed?

This is only an option on some booms up to 16 metres width. With larger booms the weight inbalance is too great. Goldacres offer bi-fold as an alternative for situations where a semi folded boom may be required. The bi-fold option ensures that boom stability is maintained and that stresses placed on the boom are kept to a minimum.

Can I spray with the boom at half width?

The bi-fold option will allow you to hydraulically fold the boom into a narrower width and cover areas where the wider boom becomes impractical.

Why don’t Goldacres use cable suspension?

Goldacres manufactured a cable suspended boom from 1983 - 1985. These booms were 60ft (18 metres) wide. Their performance was considered satisfactory although the yaw movement generated was somewhat excessive. When the requirement for larger booms eventuated we realised the yaw movement of this suspension system would prohibit further development of this design. At this point the Goldacres developed a controllable yaw dampening system which has now evolved to the current TriTech suspension. The importance of yaw dampening cannot be overstated. A spray boom which is yawing backwards and forwards is over and under applying, defeating the attempts of controlled chemical application. Vertical movement of a spray boom also requires dampening but the consequences on effective spray application are potentially not as great as excessive yaw. A cable suspended boom relies on yaw movement for suspension and when it yaws backward and forward the boom goes up, changing the height of the boom above the target.

Boom Plumbing

What is the standard nozzle spacing?

The standard nozzle spacing is 500mm. The first nozzle is 250mm from the centre of the boom.

Can I get nozzle spacing set to my requirements?

Booms can be plumbed to your requirements if it is compatible with the boom design and does not require major reconfiguration.

Why is polypropylene used for the boom lines?

Polypropylene is highly chemical resistant, lightweight and can be easily adapted to different nozzle spacings or section configurations. Polypropylene is flexible and crack resistant and is not affected by corrosion. Other hoses used on Goldacres sprayers feature a nitrile lining to provide the highest chemical resistance and long service life.

Why are Goldacres boom lines 3/4” diameter?

3/4” boom lines are the most suitable for the flow rates required in broadacre spraying applications. Larger boom lines are typically fitted on imported machinery which has been primarily designed for the application of products that require very high application rates per hectare. Larger boom lines increase the time, and quantity of water, required to flush the system as well as increasing the time to build up and dispose of pressure in the lines.

Are the nozzle brackets height adjustable?

Yes, nozzle brackets can be adjusted up/down to suit different nozzle types. Goldacres nozzle brackets are made from an injection molded UV stabilised plastic which are lightweight and highly chemical resistant.

How does the RapidFire system work?

The RapidFire system provides instantaneous, individual, nozzle shutoff that is controlled by air operated solenoids at each nozzle - this system replaces the boom valves, and standard check valves, that shutoff the boom sections and nozzles. This provides greater flexibility in changing boom section widths and faster shutoff at the nozzle. Air operated solenoids are inexpensive and low maintenance. The RapidFire system reduces the amount of plumbing on the sprayer and allows for the fitting of a boom recirculation system. The ability to have more boom sections also works perfectly in conjunction with autoboom shutoff systems. The RapidFire system can also be an economical alternative to traditional booms with multiple boom section control valves.

Do Goldacres offer boom recirculation?

Boom recirculation can be optioned on TriTech booms. This system is used in combination with Rapidfire and allows chemical to be purged through the system prior to spraying meaning that you can start off with pre-charged boom lines.

Can I spray different chemicals at the same time from separate boom lines?

Yes, Goldacres have options of dual boom lines, three tier system (3TS) and dual product systems which will allow you to apply chemicals from different boom lines and/or different chemical mixes at the same time.

How do I flush the boom completely

Goldacres fits taps at the end of each boom section when boom section valve are fitted so that if a complete boom flush is required these can be opened up and water thoroughly flushed through the system. The optional Goldacres boom recirculation system RapidFlow is also an efficient method of flushing the boom when cleaning agents are in the main tank and being flushed through the system.

I use Air Induction nozzles, do I need 3TS on my new sprayer?

Air Induction nozzles do allow a larger range of pressures to be used, giving more flexibility of speed changes within one nozzle size. However 3TS is an inexpensive system which still can be very beneficial. The capacity to vary application rates, and speeds, by switching nozzles on and off with 3TS make this a very worthwhile investment. The 3TS system uses 2 x sets of nozzles (either inline or staggered) with an additional control box to operate the 2 tiers. This makes switching from one nozzle type to another very easy.

RapidFire - The introduction of RapidFire air operated nozzle switching has simplified dual lines - we can now offer 3TS on one boom line and also eliminate the need for boom valves.

What are the benefits of Goldacres 3TS?

  • 3TS is like a 3 speed gearbox on your car. It adds a great degree of flexibility to your sprayer at a very small cost.
  • 3TS allows you to make very large rate or speed changes within the optimal pressure range of the nozzles.
  • 3TS is suitable for all nozzle types including air induction.
3TS can operate as 3 tiers, giving a flow rate from nozzle 1 changing to nozzle 2 then changing to 1 and 2

Boom Height Controls

How does Boom Height Control work?

Boom Height Control uses boom mounted ultrasonic sensors which measure the height of the boom above the ground and maintain the boom at a pre-set level.

Can I override Boom Height Control and raise the boom manually?

Yes, the operator can manually tilt, raise or lower the boom and override Boom Height Control.

Is Boom Height Control available on all models?

Boom Height Control is an option on the Prairie Pro and Crop Cruiser models. (EOH spool valves are required.)

Do I need to fit another controller?

The Raven 4400 controllers have built in capability to control the Boom Height Control system so, it is not necessary to fit another controller. ISOBus versions are also available.

Are alternative systems available for different terrain?

Yes, configurations available are: 3 sensor (standard): one centre sensor, and two outer sensors on the boom wings.

XT

3 sensor: one centre sensor, two outer boom wing sensors, plus hydraulic control of the centre section.

If I fit touchdown wheels, then why fit Boom Height Control?

The touchdown wheels provide an instant feedback to the Boom Height Control hydraulics and provide a quicker reaction time than the sensors alone. This is particularly useful for contour banks or paddocks with rapid changes in terrain and used with Weedseeker.

Operation & Controls

What controller will suit me?

The controller required for your sprayer will be determined by.

  • The number of boom sections.
  • Control of features such as DCI or Ultraglide.
  • Compatibility with an existing GPS unit.
  • Control of dual lines, 3TS or spot spray.
Choose the controller that will not only suit your needs now, but those in the future. For further information, the Goldacres broadacre catalogue outlines the features of each controller.

What is ISOBus?

This is an international standard (ISO11783) to provide standardized data transfer from various implements and displays. Ideally this means the same display (virtual terminal) will be available for a range of attachments regardless of manufacturer.

Advantages for your trailed sprayer - your ISOBus tractor can use the same display for sprayer, seeder, spreader bailer etc.

Advantages for your self propelled sprayer - single display for steering, spraying, section control and other precision features.

What is an alternative to ISOBus?

Dedicated displays for guidance, spraying and section control.

Will my sprayer be compatible with other control systems?

Yes Goldacres sprayers are compatible with Trimble, John Deere, Topcon, Agleader, Raven guidance and sprayer controllers.

What controller will suit me?

Controlling the functions on a sprayer can be broken into 2 main areas:

  • Sprayer functions - These can include speed, pressure, application rate, DCI, ultraglide, tank level, boom sections, boom recirculation, dual lines, batching, weedseeker etc.
  • GPS - This can include guidance, mapping, area covered, rates, speed etc
The Raven SCS controllers are compatible with most customer supplied guidance systems. Check with your local dealer.

How does an automatic rate controller work?

An automatic rate controller measures ground speed, normally from a wheel sensor, and maintains a constant application rate by electric pressure adjustment responding to speed changes. An inline flow meter registers the flow rates and the controller then provides an area application rate.

Raven

Raven is one of the most trusted brands of spray controllers in the world. Goldacres have been using Raven controllers for over 20 years and can provide technical support and parts for all Raven controllers fitted. Goldacres introduced Raven to Australia and have worked together to implement many unique features. A key feature of all Raven controllers is that they are simple to use.

Will my GPS and spray monitor record the same area when a paddock is sprayed?

Not necessarily. Because GPS may not measure issues such as paddock undulation, overlap, misses, headlands etc. The accuracy of the GPS system can also vary with individual systems.

Can I still use the controller manually?

Yes, all Goldacres automatic rate controllers feature a manual mode where the pressure can be manually increased or decreased and boom sections switched on/off. Manual mode is very useful for troubleshooting and sprayer testing.

How do I calibrate the controller?

All calibration settings are accessible from the main screen - making it simple to check/alter settings if required. A laptop connection is not required.

What is the maximum number of boom sections that I can control?

The Raven 440 is capable of controlling three boom sections, the Raven 450 can control five boom sections and the Raven 4400 can control up to 7 sections.

How do I switch the boom sections on/off (Raven)?

Boom sections can be switched off manually on your automatic rate controller simply by using the toggle switch.

Is it possible to switch boom sections on/off automatically?

Yes, autoboom shutoff systems use GPS signals to identify areas that have already been sprayed and will automatically switch boom sections on/off as you pass over these areas.

Can I control DCI with my Raven controller?

Yes, the Goldacres Direct Chemical Injection (DCI) system uses compatible Raven components. The SCS440 & 450 controllers require a “sidekick” controller to be fitted and the SCS4400 controller features the ability to control up to 4 different products in addition to the main spray tank. Goldacres DCI is designed to be an integrated part of the sprayer.

Are the fenceline jets controlled by the Raven controller?

Fence line jets (if fitted) are controlled from a switch box supplied with the sprayer which is fitted in the cabin. If the controller has unused boom sections available, these can be used to control fence line jets.

How do I control the hydraulic functions on a trailed sprayer?

The hydraulic functions can be controlled via a switch box (electric over hydraulic systems) or simply via the tractors hydraulic control levers in the cabin.

How many remote outlets do I require on my tractor?

This depends on the number of hydraulic functions being controlled. Prairie models can be optioned with electric over hydraulic (EOH) valves which includes a hydraulic valve block fitted at the rear of the sprayer that can control up to 6 hydraulic functions with one set of remotes. If a hydraulic pump is fitted you will require an additional set. Control of hydraulic functions is then via switches in the cabin. Prairie Special and Prairie Pro models not fitted with EOH valves require a minimum two sets of hydraulic outlets (One set for lift & one set for fold) - any other hydraulically controlled functions such as wing tilt or hydraulic pump drive will require additional sets. Control of the hydraulic functions will be via the tractors hydraulic control levers in the cabin. Wing tilt features two independently operated hydraulic cylinders, therefore two sets of remotes are required. In summary you may require up to 7 sets for the following functions: Lift, fold, tilt L, tilt R, bi-fold, fill pump and spray pump.

What if my tractor doesn’t have enough remote outlets?

Goldacres offer simple to operate electric over hydraulic (EOH) valves as an option on Prairie models. This system allows you to control up to 6 hydraulic functions with one set of remote outlets from your tractor. The functions are simply controlled from switches in the cabin.

Pumps

Why do Goldacres use diaphragm pumps and not centrifugal pumps?

Diaphragm pumps are constant displacement pumps providing a consistent flow, largely unaffected by changes to operating pressure. Diaphragm pumps have good suction capacity and can easily self prime, they can also run dry without damage. On Goldacres sprayers we supply the operator with the pump RPM and therefore the operator can be confident of the flow rate of the pump and confident the agitation to sprayer tank is consistent, even when quite large changes to operating pressures are made.

Centrifugal pumps - It is not possible to be certain of the pump flow by monitoring pump speed and the limited suction capacity of a centrifugal pump adds a further area of uncertainty to pump output. Centrifugal pumps flow rate varies considerably with pressure changes.

Maintenance - It is sometimes claimed centrifugal sprayer pumps require less maintenance than diaphragm pumps. At Goldacres we have not found this to be the case. Cast iron pumps are subject to chemical erosion. Centrifugal pumps which are run dry even for short periods can be severely damaged.

What are some examples of flow vs pressure from a diaphragm pump?

The flow output by diaphragm pumps are largely unaffected by changes to operating pressure. For example:
UDOR 250 l/min pump @ 500rpm
0 Bar = 225.7 l/min output
10 Bar = 223.1 l/min output

If I have a 250 l/min pump, what is the maximum achievable flow to the boom?

Goldacres design sprayers so that the flow to the boom should be approximately half the stated maximum flow of the pump - this is due to the pump also needing to supply agitation to the main tank. For example a 250 l/min pump should realistically achieve a maximum flow of approximately 125 l/min to the boom.

Can I hydraulically drive the diaphragm pump?

Goldacres Crop Cruisers are fitted with hydraulic drive diaphragm pumps.

Trailed Sprayers - Hydraulically driven pumps are becoming more common as tractors come out with more hydraulic outlets. Fitting a hydraulic drive to the pump eliminates any maintenance or safety issues that are often associated with PTO shaft drives. The UDOR diaphragm pumps fitted to Goldacres sprayers do not require a coupling between the hydraulic motor and pump. The MI pump is fitted with a flange which will accept this motor shaft. A hydraulic drive is required for tractors fitted with 1000rpm PTO drives. Standard diaphragm pump RPM is 540

.

Can you measure pump RPM with a hydraulic drive fitted?

Yes, an RPM sensor fitted on the shaft of the pump will provide you with a readout that will be shown on your controller.

How often will my pump require servicing?

There are many factors that can change how often a pump needs to be serviced - however it is common for pumps to be serviced annually as preventative maintenance which will ensure reliability when the sprayer is in operation.

What type of oil should I run in my pump?

A quality multigrade engine oil should be used in the pump.

Can I have a centrifugal pump fitted?

Centrifugal pumps can be fitted if specifically required.

Tank & Filling

Tanks

It is important however to ensure that the tank size you are considering is the most suitable for your tractor, and application. As tank size increases more agitation is required to ensure a sufficient tank mix. As tank size increases the need for DCI becomes even more apparent. To give more capacity and flexibility, a Front Mount module or DCI can be used to significantly speed up application. There comes a point with a trailing sprayer where tank sizes and carrying capacity of the trailer exceeds the practicality of a two wheeled trailer. Bigger water tanks make the use of DCI more important and the larger this water capacity the more chemical storage room is required.

Are the tanks baffled?

No, Goldacres tanks do not have, or require, baffles due to the design and rotomoulded construction. This ensures that there are no “blind” areas when decontaminating the tank with tank rinse nozzles.

Is polyethylene chemical resistant?

Yes, Goldacres tanks are rotomoulded from food grade, UV rated, polyethylene which has a high chemical resistance. All Goldacres tank designs have been carefully engineered to ensure easy decontamination with simple shapes and minimal cavities which can make decontamination an issue.

Will Goldacres tanks deteriorate from sun damage?

All Goldacres tanks are molded with a UV protected polyethylene blend which will provide protection from sun damage and deterioration.

Can you fit stainless steel tanks?

No, Goldacres only fit polyethylene tanks to our sprayers. Stainless steel tanks are prone to fatigue and cracking, and they can be difficult to decontaminate, with chemical remaining in welded areas. Corrosion can form in the welded areas and remain virtually invisible within the tank.

Can I have separate tanks with different chemical mixes?

Yes, Goldacres are the market leaders in dual product and DCI technology. Having multiple tanks and DCI modules, can allow you to apply up to 5 different products, at different rates, in 2 droplet sizes, in one pass. Depending on your chemical mix this can be a big benefit to ensure you are applying accurately and efficiently.

How do I know how much liquid is in the tank?

Goldacres offer dry and wet sight tube options which are fitted to the front of each main tank and a decal is fitted to provide a visual indication of how much water is in the tank. It is important to be aware that the sight tube is a guide only, and the sprayer must be on level ground.

How do I flush out the main tank?

The main tank can be flushed out thoroughly by filling it with fresh water (and a cleaning agent if required) and then disposing of the water through the boom or main tank drains in a suitable area. Tank rinsing nozzles can be fitted to assist in cleaning. The tank rinsing nozzles operate under high pressure from the main pump and can be easily removed from the top of the tank for cleaning and inspection.

What kind of agitator is fitted to Goldacres sprayers?

This supermix agitator amplifies bypass flow dramatically. A supermix venturi agitator is fitted to all Goldacres sprayers. The supermix agitator provides agitation while spraying and is serviceable from outside of the tank for efficient cleaning and inspection. The 8500 litre model is fitted with two agitators to assist with the greater quantity of water that is to be mixed.

Can I fit a fill pump?

Yes, a hydraulically driven fill pump can be fitted onto selected models. The onboard fill pump takes away the need for a petrol powered fire fighting pump or auxiliary pumping system and gives you the convenience of being able to draw from any suitable water source.

Do I fill the tank through the main tank lid?

No, all Goldacres sprayers feature a quick fill (top mount bottom fill) point. This enables the connection of a fill hose with a cam lock fitting directly to the fill point - water is then transferred directly into the bottom of the tank. The top mount bottom fill prevents the contents of the tank flowing back out of the main tank when a fill pump is switched off.

Is a fill filter fitted?

A 2” fill filter standard on Prairie models.

Liquid fertiliser

Liquid fertiliser can be transfered to the tank via a cam lock fitting on the sump. Some additional fittings may be required. A further optional 3” top bottom fill maybe fitted.

Can I fill other tanks at the same time as the main tank?

Yes, you can direct water to other tanks such as the foam marker or flush water tank from the one location. The Goldacres EZ control clearly identifies the filling functions and makes the operation easy.

Do Goldacres tanks have sumps for tank draining?

Yes, all Goldacres tanks feature a large sump and large drain to ensure the complete drainage of the tank contents. The drain can be opened and closed remotely to ensure operator safety.

Can I easily measure the amount of chemical going to the main tank?

Yes, Goldacres have several options available. The SuperFlow induction hopper has internal markings to provide a guide of the amount of chemical being transferred. The Transcal allows chemical to be measured into the Transcal tank and then transferred to the main tank for mixing. Another option is a chemical pump which can be used to provide you with a digital readout of the amount of chemical transferred.

Can polyethylene tanks be repaired?

Yes, with the appropriate equipment and skill polyethylene tanks can be plastic welded if necessary.

Can I draw chemical directly from a drum to the main tank?

Yes, every Goldacres sprayer comes standard with a chemical probe, which when inserted into liquid, uses the venturi to draw liquid directly from the source to the main tank. Up to 30 litres of water per minute can be transferred via the chemical probe.

How do I transfer chemical from an envirodrum or shuttle to the main tank?

Chemical can be transferred from larger chemical drums to the main tank with the use of the optional micromatic couplings, Goldacres Transcal or chemical pumps - chemical can also be transferred using the probe.

What is the Transcal?

The transcal is a closed volumetric measuring device which allows you to safely draw liquid chemical via venturi from a drum to the transcal tank, the Transcal tank allows you to measure out the amount required, and then transfer via venturi to the main tank. The Transcal will allow you to safely and conveniently transfer up to 30 litres of liquid per minute.

Do I require Transcal if I fit an induction hopper?

This depends on your circumstances. The Transcal is particularly useful for measuring more precise quantities of liquid chemical and it is also compatible with envirodrums - your need for both on your sprayer will come down to your needs when transferring chemical into the main tank

How fast will the SuperFlow induction hopper transfer chemical to the main tank?

Different chemicals have different viscosities which makes a difference to the rate of transfer, however you can expect to transfer up to 50 litres of water per minute from the induction hopper to the main tank.

What is a venturi?

A venturi is a non mechanical device used by Goldacres to induct chemical into the system or to increase liquid flows. A venturi works by using a liquid flow which accelerates through an orifice in the throat of the venturi. The pressure drop over this orifice creates a vacuum in the chemical probe or suction line, drawing chemical into the system.

Where is the venturi located?

There are several venturis located on the sprayer - each with different functions. The main tank venturi is the orange coloured fitting located at the top of the tank. The hopper venturi is located in the bottom “throat” of the hopper. The Supermix agitator also has a venturi and is integral to the design of the agitator.

Can I measure water or chemical mix going into the tank more accurately?

Goldacres offer a digital fill flowmeter with optional shutoff valve this flowmeter is mounted permanently on the sprayer and also provides a digital readout of the quantity of water pumped, it can be programed to shutoff automatically when it has reached a pre-set quantity.

Batchmate

A further option for filling sprayers is the Goldacres Batchmate which is a bulk mixing and transfer station of 800L capacity.

Direct Chemical Injection

How does DCI work?

Neat liquid chemical is stored in tanks mounted on the sprayer. A 12 volt positive displacement pump distributes chemical as required to the mixing chamber mounted before the boom valves. After exiting the mixing chamber chemical is then distributed to the boom sections. DCI eliminates the need to mix chemical in the main tank and reduces downtime in decontaminating the system.

How will I benefit from DCI?

DCI benefits will depend on your application. In general the benefits are:

  • You can change chemicals at the push of a button.
  • The ability to increase the chemical rate without affecting the water rate.
  • Flexibility to stop spraying at any time without the worry of chemical degradation in the main tank.
  • Reduced downtime mixing chemical when filling.
  • Improved chemical performance due to less time mixed with water prior to application.
  • Reduced downtime when decontaminating.
  • Reduced chemical and water wastage associated with decontamination.
  • Reduced need for agitation.
  • Consistent chemical rate from start to finish.
  • Especially important on large tanks where it is difficult to achieve uniform chemical mixtures.

How is DCI different to other systems?

The Goldacres DCI systems use the proven Raven positive displacement pump and control system as the basis of the DCI system - however Goldacres have custom designed tanks with increased capacity, fill and spray functions that are clearly labeled and easy to use as well as making it more convenient and safe to induct chemical and decontaminate the tanks. Goldacres also offer a 600 litre bulk DCI tank. Goldacres DCI is not available on any other brand of sprayer.

Is the DCI system reliable?

Yes, the Goldacres DCI system is using technology that has been available for over 20 years - a series of sensors and a positive displacement pump ensure reliability. Goldacres have fitted over 350 DCI systems to sprayers operating in a wide variety of applications throughout Australia and can give you the sales and service support to ensure you are comfortable with the DCI system. Goldacres are the market leaders of DCI in Australia and have many years experience with DCI.

What is the lowest chemical rate I can spray at?

High and low volume pump options are available to suit the rates you want to spray at. The high volume pump has a range of 135-5400ml/min and the low volume pump has a range of 40-1000ml/min. The pump capacity needs to be carefully considered in systems that use auto boom shutoff.

How is the DCI system controlled?

The DCI system is controlled by the Raven automatic rate controller fitted in the cabin. The calibration information is entered into the console and then you simply operate with the rate controller as normal. Products in the DCI tanks can be switched on/off as required and rates can be increased/decreased while in operation.

Can I adjust the chemical rate easily while spraying?

Yes, with DCI chemical rates can easily be increased or decreased from the cabin via the controller. This gives the flexibility to change the chemical mix on the go without the need to add chemical to the main tank as would normally be required. The chemical rate can be adjusted independently of the water rate.

Is the DCI system accurate?

Yes the constant metering pump ensures the rate is unchanged from start to finish of the tank. This compares to tank mixing which requires high and constant agitation or large changes in concentration can occur.

Can I use granules and powders?

No, the DCI system is compatible with liquids only. Granules and powders, will need to be mixed in the main tank. Wetters and other adjuvants are normally also added to the main tank.

Is it possible to spot spray in specific areas?

Yes, the twin line spot spray option, exclusive to Goldacres, uses the Goldacres DCI system and a pre-charged second boom line, which is separate from the first boom line, and an extra switch mounted on the console to allow instant spot spraying of specific areas of a paddock.

How do I get chemical into the tanks?

With Goldacres DCI chemical can be inducted safely via a closed transfer system into the tanks via the venturi probe or from an envirodrum using the micromatic coupling. It can also be pumped in with a transfer pump.

Is it possible to drain chemical out of the tanks and back into drums?

Yes, the DCI system will keep waste to a minimum - leftover chemical can be easily transferred back into an appropriate container.

Can I flush out the tanks easily?

Yes, that is a unique feature of the Goldacres DCI system - an integrated tank rinsing nozzle in each tank makes flushing when changing chemicals convenient. The pump, filter and boom lines can be flushed with fresh water independently of the chemical tank.

SmartSteer

How does SmartSteer work?

SmartSteer uses a tractor mounted sensor to allow the sprayer to follow in the same wheel track as the tractor. This reduces crop damage and promotes good control of yaw movement in the boom. SmartSteer operates by steering the wheels and not by articulating the chassis.

Is SmartSteer available on all models?

No, SmartSteer is only available on the Prairie Pro models. SmartSteer is especially suited to GPS steering as changes in direction do not translate into boom yaw, common with articulated chassis steering systems.