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Micron Micromax Instruction Manual

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Instruction manual
Bromyard Industrial Estate, Bromyard,
Herefordshire, HR7 4HS, UK
Tel: + 44 (0) 1885 482397
Fax: + 44 (0) 1885 483043
E-mail: enquiries@micron.co.uk
URL: http://www.micron.co.uk

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Summary of Contents for Micron Micromax

  • Page 1 Instruction manual Bromyard Industrial Estate, Bromyard, Herefordshire, HR7 4HS, UK Tel: + 44 (0) 1885 482397 Fax: + 44 (0) 1885 483043 E-mail: enquiries@micron.co.uk URL: http://www.micron.co.uk...

  • Page 3: Table Of Contents

    This manual contains all the information required to ensure successful and safe application of agrochemicals using sprayers fitted with one or more MICROMAX atomisers. It should be treated as an integral part of the machine and made easily available to the spray operator for reference, as required, during the spraying operation.

  • Page 4: Description

    The MICROMAX is driven by a 12v DC electric motor, allowing it to be powered by the vehicle's electrical system. Disc rotational speed, and therefore droplet size, is selected using the three gear belt and pulley drive...

  • Page 5: Specification

    36W max Used LIQUID FEED BELT AND NOZZLES PULLEY DRIVE ATOMISER DISC Figure 1 – MICROMAX Spray Head Speed Setting Medium High Feed Rate 0.5 - 3 l/min 0.25 - 1 l/min 0.125 - 0.5 l/min 1 - 6.5 US pt/min 0.5 - 2 US pt/min...

  • Page 6: Ten Key Points For Users

    The following list is intended to be referred to prior to commencing each spraying operation, to remind users of the key points for the safe and efficient use of the MICROMAX atomiser. SAFETY: Always refer to the product label for specific recommendations for each product, and to Section 4 ‘Safety and...

  • Page 7: Safety And The Environment

    After using agrochemicals or handling equipment always wash your hands and clothes thoroughly. The minimum protective clothing required for spraying with the MICROMAX from an uncabbed vehicle, or of cleaning contaminated atomisers and sprayers is: rubber gloves boots/shoes & long trousers...

  • Page 8: Installation

    5 – INSTALLATION MICROMAX 5 – INSTALLATION The design of a sprayer incorporating one or more MICROMAX atomisers will vary according to the crop or target to be sprayed. This section gives general advice and design data but is not intended to provide specific instructions for building every type of sprayer.
  • Page 9 Brace bars, nylon support ropes and springs are common methods of reducing boom bounce. 5.1.3 Folding booms If mounting MICROMAX atomisers on a folding boom, it is essential to ensure that the atomisers are positioned such that they do not interfere with the folding mechanism.
  • Page 10 5 – INSTALLATION MICROMAX 5.1.4 Spray pattern clearance The MICROMAX produces a large hollow cone spray pattern, varying in diameter with different atomiser speeds/droplet sizes. Support arms or frameworks should be designed to allow a radial clearance of 1.2m (4 feet) to prevent spray pattern disruption.
  • Page 11 0.5m (20 inches) Figure 8 – Distance above target 5.1.6 Boom end supports If using a boom sprayer, it is advisable to fit boom tip wheels or skids to protect the end MICROMAX atomisers from contact with the ground.
  • Page 12 5 – INSTALLATION MICROMAX 5.1.7 Spacing of multiple atomisers The most ideal spacing between MICROMAX atomisers, for multi-purpose use, is 1m (40 inches). At the lowest atomiser speed a wider spacing is possible and has been successfully used. Overlap of spray pattern can be expected up to 2m (80 inches) under calm conditions e.g.
  • Page 13 5.2.2 Diaphragm Check Valves (DCVs) It is strongly recommended that a suitable Diaphragm Check Valve (DCV) be fitted in the spray liquid line to each MICROMAX, just before the flow restrictor (see Figure 11 ‘Typical spray liquid feed system’ on page 14).
  • Page 14 MICROMAX atomiser. A finer mesh 0.25 mm (100 mesh/inch) filter is recommended. The main purpose of filtration in a MICROMAX system is to protect the pump and valves, and to prevent partial or total blockage of the flow restrictors.
  • Page 15 5 – INSTALLATION 5.2.6 On/Off valve An on/off valve must be fitted in the main liquid feed to the MICROMAX atomiser/s (see Figure 11 ‘Typical spray liquid feed system’ on page 14). This may be mechanically or solenoid operated, but should be positioned so as to be easily and safely actuated by the sprayer operator whilst driving the sprayer.
  • Page 16 LOW PRESSURE DIAPHRAGM CHECK VALVE (DCV) ORIFICE PLATE HOLDER TYPE FIXED FLOW RESTRICTOR UNIT 6mm (0.25 INCH) BORE HOSE CONNECTION SPLIT USING 6mm (0.25 INCH) BARB ‘Y’ PIECE CONNECTED TO 2 FEED NOZZLES ON MICROMAX TOP PLATE Figure 11 – Typical spray liquid feed system...
  • Page 17 5.2.8 Flow indicators It may be desirable to fit flow indicators in the feed lines to each MICROMAX atomiser. The flow indicators should be positioned so as to be clearly visible to the spray operator whilst driving the sprayer, without the operator needing to take their eyes off the direction of travel for more than a few seconds.
  • Page 18 5 – INSTALLATION MICROMAX When retro-fitting multiple MICROMAX atomisers to a boom sprayer it is common to utilise most of the existing spray system. MICROMAXs are generally plumbed to every other existing nozzle holder, the holders in between being blanked off, if nozzles are spaced at 0.5m (10 inches).
  • Page 19 5.3.3 Switch Box A master on/off switch and ‘power on’ indicator should be fitted in order to be able to turn the MICROMAX atomiser/s on and off as required. The switch should be large and easily operated with a gloved hand, yet difficult to accidentally actuate (i.e.
  • Page 20 As a guide, allow 3A per MICROMAX then add 10%. A circuit breaker may be used, if preferred, instead of a fuse.
  • Page 21 5.3.8 MICROMAX connection The leads from the switch box to each MICROMAX should be oversized to minimise voltage drop. Guide sizes are given in Table C ‘Micromax feed cable sizes’ on Page 20.
  • Page 22 (10 AWG) Individual atomiser power cable as above Table C – MICROMAX feed cable sizes Connection to the MICROMAX’s motor leads should be made in such a way as to facilitate quick and easy replacement of the atomiser. Waterproof automotive...
  • Page 23 MICROMAX 5 – INSTALLATION SWITCH BOX (b) MICROMAX FUSE (e) FUSE (d) 12 VDC BATTERY (a) MULTIPLE HEADS IN PARALLEL (a) - (e) NOTES: HEAVY DUTY 12 VOLT DC BATTERY SWITCH BOX GIVING ON/OFF CONTROL USUALLY VEHICLE’S ALTERNATOR CIRCUIT SLOW BLOW AUTOMOTIVE TYPE (SEE SECTION 5.3.6) 5 AMP SLOW BLOW Figure 12 –...

  • Page 24: Basics Of Controlled Droplet Application (Cda)

    Micron's MICROMAX CDA technology. It is not intended to be a comprehensive spraying guide, or to offer detailed recommendations. Please contact Micron for application specific advice. 6.1 WHAT IS CDA? An agricultural sprayer may be used to treat many different targets, varying from the bare ground to an insect on top of foliage.
  • Page 25 Figure 14 – Uneven and even droplets Micron’s MICROMAX CDA atomisers use spinning discs, with precision formed grooves and teeth, to produce droplets. When the disc speed and spray liquid feed rate are correctly set, they produce relatively even droplets sized to suit the application.
  • Page 26 6 – BASICS OF CONTROLLED DROPLET APPLICATION (CDA) MICROMAX atomiser disc’s speed determines size droplets produced in each mode. The faster the disc spins, the smaller the droplets. Further increasing spray liquid feed rate will eventually ‘flood’ the grooves and teeth, causing ‘sheeting’.
  • Page 27 Figure 17 – Number of droplets from a fixed volume of spray liquid The ability of a MICROMAX CDA atomiser to produce relatively even sized small droplets allows the volume of spray liquid to be drastically reduced, whilst maintaining the density of coverage. This is referred to as 'Low Volume' CDA spraying.
  • Page 28 6 – BASICS OF CONTROLLED DROPLET APPLICATION (CDA) MICROMAX A Low Volume CDA sprayer should be calibrated to give the required coverage density. (US gpa) Volume application rate l/ha (0.5) (1.5) (2.5) (3.5) Droplet Number of droplets/cm of ground area (droplets /sq.
  • Page 29 MICROMAX 6 – BASICS OF CONTROLLED DROPLET APPLICATION (CDA) 6.4 DROPLET TRANSPORT AND DEPOSITION Most agricultural sprayers (excluding air-assisted and electrostatic) use various combinations of initial momentum, gravity, and controlled drift to transport the spray liquid droplets to, and deposit them on, the target.
  • Page 30 MICROMAX 6 – BASICS OF CONTROLLED DROPLET APPLICATION (CDA) 6.4.2 Gravity Gravity is the force which accelerates objects downwards, and is a function of an object's mass. Air resistance (drag) acts against gravity to slow the object. As gravity accelerates an object its downward velocity, and therefore momentum, increases.
  • Page 31 Please contact Micron for the latest information (i.e. recommendations, trials reports, expert contacts) relating to specific areas of application. 6.4.5 Spray concentration effect Experience with CDA has shown that results are often far better if an additive such as an adjuvant oil or wetter is included in the chemical mix.
  • Page 32 6 – BASICS OF CONTROLLED DROPLET APPLICATION (CDA) MICROMAX The effect of the additive is to reduce the surface tension of the droplet. This significantly increases the area covered by the droplet, reducing the risk of scorch and increasing absorption.
  • Page 33 Tiny droplets that cause drift and oversize droplets that cause run-off can be dramatically reduced. Please call on Micron’s extensive experience and library of trials data for further information on particular applications and current recommendations.

  • Page 34: Calibration And Adjustment

    7.1.2 Atomiser Speed Setting The chosen speed is set by moving the MICROMAX’s drive belt, by hand, to one of the three available positions, see Figure 22 ‘Atomiser Speed Setting’ on page 33. Ensure that the belt is tight and level, and that the...
  • Page 35 MICROMAX MICROMAX 7 – CALIBRATION AND ADJUSTMENT 7 – CALIBRATION AND ADJUSTMENT Application Speed Setting Nominal Disc Droplet Size Speed Range Herbicides, 2000 rpm 200 – 500 μm Foliar Fertilisers, Soil Applications, and Drift Minimisation Fungicides and Medium 3500 rpm 100 –...
  • Page 36 (see Table A ‘Typical performance data’ on page 3). IMPORTANT SAFETY RECOMMENDATIONS Be aware that when a MICROMAX atomiser is running it rotates at high speed, which and can present an entanglement hazard and risk of injury by cutting by the discs’ teeth.
  • Page 37 MICROMAX 7 – CALIBRATION AND ADJUSTMENT GUIDELINES FOR THE APPLICATION OF PESTICIDES WITH CDA - REDUCED VOLUME SPRAYING. Chemicals are categorised into three groups when applying through CDA equipment. 1. Chemicals whose labels give specific CDA instructions: For chemicals available as CDA formulations or with label instructions on use with CDA equipment the label instructions should be followed.
  • Page 38 2.4m + [Atomiser spacing (m) x [Number of atomisers - 1] ] EXAMPLE: For a 12m boom sprayer with 12 MICROMAX heads spaced at 1m the swath width would be calculated as: 2.4m + [ 1m x [12 – 1] ] = 2.4m + [1m x 11]...
  • Page 39 MICROMAX 7 – CALIBRATION AND ADJUSTMENT If the sprayer or tractor is not fitted with a forward speed indicator, use markers to determine the forward speed. Start the vehicle and adjust the throttle to achieve the required constant forward speed, drop the first marker, time 30 seconds then drop the second marker.
  • Page 40 7.2.4 Determining the output per atomiser per minute Using the total spray liquid output rate in litres per minute calculated in 7.2.3 above, and the known number of MICROMAX atomisers used, the output (litres per minute) per atomiser is calculated as below.
  • Page 41 SECTION 7.2.3 SECTION 7.2.4 l/min Output per MICROMAX l/min Number of atomisers Figure 24 – Calculating flow rate (l/min) per MICROMAX NOTE: MORE COPIES OF THIS CALCULATION GRID MAY BE FOUND IN SECTION 14 – ’USER NOTES’.
  • Page 42 Insecticides Table H – Flow rate parameters If the required flow rate per MICROMAX atomiser (see section 7.2.4) does not fall within the permissible range, for the speed setting for the application, action must be taken to compensate and bring the flow rate into the range.
  • Page 43 7.2.6 Setting the required flow rate The flow rate to each atomiser is usually set to be the same. Flow is regulated by the MICROMAX’s coloured nozzles and/or a flow restrictor fitted into the line before each MICROMAX head (see Section 5.2.1) and the spray line pressure.
  • Page 44 7 – CALIBRATION AND ADJUSTMENT MICROMAX If a variable restrictor unit or orifice plate holder unit is to be used to control flow, simply fit the two Red nozzles and plumb spray line to both. These will then have no effect on the flow rate until it reaches over 1.3 l/ min at 1 bar, when they will begin to act as a pair of orifice plate size 48 restrictors as described above.
  • Page 45 MICROMAX 7 – CALIBRATION AND ADJUSTMENT ORIFICE PLATE SIZE Nearest Size Required Flow Rate PRESSURE (bar) Figure 25 – Graph of flow rate vs. pressure for common orifice plate sizes.
  • Page 46 8 ‘Operation’ for guidance on mixing and filling before calibration. CALIBRATION PROCEDURE: Place a pail under each MICROMAX head on the sprayer, making sure that the sides of the pail extend above the disc’s teeth. Start the MICROMAX atomiser/s rotating.
  • Page 47 MICROMAX 7 – CALIBRATION AND ADJUSTMENT 7.2.8 Verifying application rate During use the amount of spray fluid used and area covered should be monitored to check that the correct application rate (l/ha) is being achieved. The simplest method to do this is to calculate the area sprayed per tank load.

  • Page 48: Operation

    8 – OPERATION MICROMAX 8 – OPERATION IMPORTANT SAFETY RECOMMENDATIONS Using agrochemicals is a hazardous process. Operators should take the recommended safety precautions, wear the necessary personal protective clothing and equipment, and be familiar and comply with all relevant legislation and/or regulations.
  • Page 49 CDA spraying should only be carried out on days suitable for conventional spraying. When using the MICROMAX at its medium or high speed wind movement is beneficial as it imparts lateral movement to the spray aiding penetration and coverage of denser canopies, 8 to 16 kph is recommended.
  • Page 50 8 – OPERATION MICROMAX Only the quantity of spray liquid needed for the spray operation should be mixed, eliminating the need to store or dispose of any excess. Mixed chemical solution should not be left in the spray tank overnight.
  • Page 51 MICROMAX 8 – OPERATION 8.3.2 Adding chemicals In general for CDA spraying a chemical product, a wetting agent and an anti-evaporant are added to the mix. The quantities required of each spray mix constituent are calculated as below. Quantity of...
  • Page 52 The actual method used for the spraying operation will depend on the type of machine, the crop or target and the application type. For further advice on specific operations consult a qualified and experienced agronomist, Micron can also offer advice on many aspects.
  • Page 53 MICROMAX 8 – OPERATION The following points should, however, be noted for all types of application and spraying methods. NOTES FOR SPRAY OPERATION: Always turn the atomisers on before the spray liquid. Always use the spray liquid controls to turn chemical flow on and off (i.e.
  • Page 54 8.6 STORAGE If the sprayer is to be stored for an extended period of time before next use, after cleaning the sprayer oil the MICROMAX atomisers (see section 9 – ‘Maintenance’ and turn the disc several full rotations by hand. The atomiser discs, pulleys and belt should be cleaned thoroughly (see section 9 –...

  • Page 55: Maintenance

    MICROMAX 9 – MAINTENANCE 9 – MAINTENANCE 9.1 REGULAR MAINTENANCE To ensure a long life and trouble free operation, the MICROMAX atomiser requires some regular maintenance. Refer also to the base sprayer or spray vehicle manufacturer’s guidelines their recommended maintenance schedule.
  • Page 56 Figure 27 – Changing the drive belt 9.1.1.3 Cleaning The MICROMAX atomiser should be cleaned at the end of each spraying day using a pressure washer or similar. Avoid directing the water jet upwards into the nose of the motor.
  • Page 57 9.2 OTHER MAINTENANCE AND REPAIRS The MICROMAX is designed to be easily dismantled, repaired, and re- assembled by any experienced technician using common workshop tools. A full parts diagram and list, including part numbers, is given in section 11 –...
  • Page 58 9 – MAINTENANCE MICROMAX REMOVE THE SHAFT RETAINING NUT AND WASHER. DROP THE DISC ASSEMBLY AS FAR AS IS POSSIBLE TO ALLOW ACCESS BETWEEN THE ATOMISER DISC AND THE FIXED INNER CUP. USING A SMALL STIFF BRUSH (I.E. A TOOTH BRUSH)

  • Page 59: Trouble Shooting

    MICROMAX 10 – TROUBLE SHOOTING 10 – TROUBLE SHOOTING POSSIBLE SUGGESTED PROBLEM CAUSE SOLUTION Blown fuse Replace blown fuse Break in wiring Repair break Motor doesn’t run Failed switch or relay Replace as required Failed motor Replace motor Slipping or broken...

  • Page 60: Parts List And Diagram

    11 – PARTS LIST AND DIAGRAM MICROMAX 11 – PARTS LIST AND DIAGRAM PART NUMBER QUANTITY DESCRIPTION 3282 Nut, 5/16” BSCY, Hex 3405 2 in 4655A Feed Nozzle, Yellow 4337 2 in 4655A Feed Nozzle, Red 4338 2 in 4655A...
  • Page 61 MICROMAX 11– PARTS LIST AND DIAGRAM Figure 29 – Parts Diagram...

  • Page 62: Notes On Units And Useful Conversions

    SI Units are used throughout this manual except where the use of other units increases clarity. The ‘micron’ 1 micron = 1 μm = 0.001 mm (one thousandth of a millimetre) 12.2 USEFUL CONVERSIONS LENGTH / DISTANCE SI UNIT - Metre m Inch 0.0254...

  • Page 63: Ec Declaration Of Incorporation

    HR7 4HS Description of Product: Electrically (12V DC) powered agricultural atomiser. Name and model number of machine: MICROMAX 3 SPEED UK Place of Issue: Bromyard, England Name of authorised representative: G. S. Povey Position of authorised Representative: Joint Managing Director...

  • Page 64: User Notes

    SECTION 7.2.3 SECTION 7.2.4 l/min Output per MICROMAX l/min Number of atomisers Settings: Speed Setting: Low / Medium / High Nozzles: Red / Blue / Yellow 1 / 2 VRU Setting / Orifice Plate Number:...
  • Page 65 SECTION 7.2.3 SECTION 7.2.4 l/min Output per MICROMAX l/min Number of atomisers Settings: Speed Setting: Low / Medium / High Nozzles: Red / Blue / Yellow 1 / 2 VRU Setting / Orifice Plate Number:...
  • Page 66 14 – USER NOTES MICROMAX NOTES:...
  • Page 67 14 – USER NOTES MICROMAX NOTES:...
  • Page 68 14 – USER NOTES MICROMAX NOTES:...
  • Page 70 Part of: Manufactured by: Goizper S COOP. Micron Sprayers Antigua 4, 20577 Antzuola Bromyard Industrial Estate, Gipuzkoa SPAIN Bromyard, Herefordshire, HR7 4HS, U.K. PO Box 211, 20570 Bergara, Gipuzkoa SPAIN T +44 (0)1885 482397 T +34 943 786 000 F +44 (0)1885 483043 F +34 943 766 008 / 943 787 095 E enquiries@micron.co.uk...

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