Congratulations with your Duun VM420 firewood processor. All Duun tractor operated machines has been engineered and tested in close cooperation with end users of our products. This in order to develop reliable and user friendly machines Please red instructions manual before you start using the machines..
List of content MACHINE IDENTIFICATION WARRANTY TERMS DELIVERY FORM FOR DUUN CM430 FIREWOOD PROCESSOR SPECIFICATIONS PREPARATIONS BEFORE USE RANSPORT AND HANDLING BEFORE USE REPARATION FOR MOVING WITH TRACTOR ECURING BEFORE MOVING YDRAULIC OIL QUALITY IL LEVEL CHECK IL TEMPERATURE CHECK...
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All operators, mechanics and the owner must be well acquainted with the instruction in this instruction manual before the machine is taken into use. You should always work with care when you employ agricultural machinery. Read and observe the safety instructions in this binder. Your safety is your responsibility! Be particularly aware of warning signs with this symbol it marks measures that must be carried out in order to avoid accidents.
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Clothing and the drive shaft Do not work in clothing that may be caught in the moving parts of the machine (for example scarf, wide coats). The tractor must be disconnected and the hand brake activated before the shaft is connected to the tractor’s power take-off.
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Rotating parts – risk of crushing The machine’s rotating parts may cause severe injuries. The same applies to risk of crushing during operation. All covers and protective equipment is to be fitted on the machine during use. The user is responsible if an accident occurs as a consequence of defective protection.
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Horizontal positioning and tidiness on the workplace Always place the machine as horizontally and steady as possible to secure stable working conditions. Keep the workplace as tidy as possible. This contributes to generally better safety against unwanted events. Area of application The machines are only intended for production of fire wood from “pure”...
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17. Safe cutting Avoid placing your hands close to the saw chain. This is obtained by consequently using the log holder A and the handle B to operate it. For cutting the last log of wood, it is important to retain a “suitable”...
Warranty terms Fire wood processor VM420 has a 12 month guarantee against defects in materials and workmanship. Parts that are not originally manufactured by Duun Industrier AS, for example shafts, bearings etc. are subject to these suppliers’ guarantees and terms.
Specifications Feature VM420 Net weight 875 kg Length feeding belt A 2200 mm Length output conveyor-transporter B 4000 mm Sideways transporter + total 25 degrees to each side Number of positions for transporter D 5 pcs Total width during transport 2.550 mm...
Preparations before use Transport and handling before use The VM420 body is equipped with a fork pocket (A) for handling with fork truck or pallet forks. Be aware that one individual wood machine weighs about 875 kg. Use lifting equipment designed for such total weight! Preparation for moving with tractor.
Hydraulic oil - quality. The machine’s performance will, to a high degree, depend on keeping the hydraulic oil intact. The greatest elements of risk for the quality of the oil are Excessively high temperature which entails poor lubrication performance and risk of faults and break-down of expensive components such as valves, pumps and motors.
Too short telescope length of the shaft entails a risk of overload of the tractor’s power take-off and the gearbox of the VM420. Please lubricate the PTO drive shaft before use.
Preparation of the transporter. The transporter is prepared for operation by 1. Releasing the strap fixing point and loosening the strap at the points outlined in the illustration. 2. The transporter is put in place by releasing the winch and the wire which holds it in place –...
Setting of splitting length from 60 to 40cm The adjustment of the splitting length from 60 to 40cm consists of three elements: 1. Make sure that the splitting piston is left in the outer extreme position; i.e. is not retracted. The first step in this operation is to start a splitting movement with the cutting handle C.
Height adjustment of the machine In order to be able to elevate the machine in intervals of 40mm up to 80mm, the supporting legs that are fitted in the corners may be set in the required height. Practical use Condition The machine may not be used before the operator has done the following: ...
Main functions – feeding – speed adjustment of the feeding conveyor The wood material that is to be cut is fed by means of the feeding conveyor. The main functions are A. To move the feeding conveyor forwards/backwards. B. Operate the cutting sword up and down. C.
Hydraulic knife lift The splitting knife H is adjusted up H and down I with the lever equipped for this purpose In order to change knife J, the lever is moved to the top position (H). In this position, the knife may be lifted out by pressing it forward and lifting it Cutting The lever for operating cutting and operation of...
Sideways adjustment of the transporter The transporter may be adjusted in 3 positions to each side; i.e. 7 positions in total. To release the locking, the handle A is activated. The transporter is released and may be moved sideways. The handle A will engage in the first fixing hole (sideways position) when the transporter is moved sideways.
Blunt chains and skewly sharpened chains entail great wear on the saw chain sword and risk of extra costs and complications. In order to avoid this, Duun VM420 is designed so that the saw chain always must be dismantled from the machine for any sharpening or replacement.
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To replace the chain, the screw A is released (first release the nuts B) as far so at to allow the chain to be removed in the back for maintenance or replacement. File dimension 5.5mm similar for older chain saws. The chain is now available for sharpening with a round file from both sides.
Chain tensioning and adjustment of the chain lubrication Chain tensioning Use gloves during work with the chain! The chain is tensioned by releasing the two nuts (B). Then screw (A) is tightened to tension the chain proper. Afterwards, the nuts (B) are tightened. If you prefer to replace the chain, this is done by releasing the screw A (first release the screws B) as far so at to allow the chain to be removed in the back for maintenance or replacement.
Service and maintenance Before opening any lids or covers always stop tractor or motor powering the processor in order to avoid injuries Please note: There are movable parts inside the machine which involve great power and risk of crushing. The machine should never be operated when the covers are removed. The processor has been test run and adjusted from factory and the hydraulic oil should have reached a workiong temperature of minimum 20 degrees C before any adjustments are made.
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Clean the mechanism for the log stop function. Check that indicAted lever can move completely to the lower position Inspect cutting chain and saw bar regularly. Sharpening ang tightening of the saw chain ensure effective cutting. Check that the vertical angle of the saw bar (90 degrees) so that the saw bar does not jam during cutting.
Check oil level and temperature of hydraulic oil regularly. Lubricate knife adjustment at grease nipple indicated Weekly maintenance Open lid covering oil tank and clean the area to avoid that the oil tank is covered by dust and chips. This in order to keep up a best possible cooling effect.
40cm splitting length Lubrication points VM420 has many bearing points, of which many are only subjected to easy loads and are therefore equipped with pre-lubricated ball-bearings. The other bearings are mainly flange bearings that require moderate lubrication. The main rule here is to avoid excessive lubrication and forcing of the oil seals in the bearings.
Monthly maintenance Drain a small amount of hydraulic oil to check the oil regularly. Grey oil is an indication of water in the oil. If this occurs, all hydraulic oil must be replaced. Yearly maintenance Check the oil level after each season by releasing level screw F as illustrated in the sketch (the oil to leak at sufficient level).
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