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Limpar WKB 750

01.07.2019

Page 21 of 35

3.3 Mounting the back panel



Position the back panel on the chassis as shown in Fig. 5.



Fix the back panel in place as shown in Fig. 5.



Firmly tighten the threaded union.



Check that the back panel is firmly attached to the

chassis.

Commissioning

Fig. 5: Mounting the back panel

Back panel

Screw
M8x20

Stop nut
M8

Washer
Ø 8.5

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Summary of Contents for WKB 750

Page 1: ...age of the original operating manual German Keep on hand for further use 4F Maschinentechnik GmbH Am Gasspeicher 6 49453 Rehden Germany Tel 49 5446 9970 40 Fax 49 5446 9970 42 Email info 4 f de Internet www 4 f de 4F Maschinentechnik GmbH ...

Page 2: ...ead this operating manual carefully prior to assembly and operation of the weed burner Always comply with the instructions and information contained herein particularly the safety instructions If the operating manual is lost or in poor condition request a new copy from the manufacturer the same applies for parts of the operating manual This operating manual only applies for the weed burner specifi...

Page 3: ... the liability for the ensuing consequences Contact your specialist dealer to order spare parts or accessories In addition comply the instructions of the gas supplier regarding the use storage transport and filling of gas cylinders 4F Maschinentechnik GmbH accepts no liability for the content of the instructions of the gas supplier Explanation of symbols signs and direction indications For better ...

Page 4: ...tion for efficient and trouble free operation refers to important information in other sections and documents 2 Many texts serve a particular purpose These texts are marked as follows Listings Instructing text e g a sequence of activities 3 In the text sides of the Limpar WKB 750 weed burner are cited left right front back Left or right refers to the side that the operator of the machine sees view...

Page 5: ...Safety switch 11 1 7 2 Hose break safeguard 11 1 8 Safety regulations and accident prevention regulations 12 1 9 Disposal 14 1 10 Safety sign on the weed burner 15 2 Description 16 2 1 Type plate 16 2 2 Overview 17 2 3 Technical data 18 3 Commissioning 19 3 1 Unpacking 19 3 2 Mounting the handlebar 19 3 3 Mounting the back panel 21 4 Operation 22 4 1 Preparatory activities 24 4 1 1 Connecting the ...

Page 6: ...9 5 1 Safety guidelines for maintenance and repair 29 5 2 Regular maintenance tasks 30 5 2 1 Maintenance schedule 30 5 2 2 Maintenance records 31 5 2 3 Checking the Bowden cables for ease of movement 31 5 2 4 Replacing the battery 31 5 2 5 Checking the ignition electrode 32 5 2 6 Cleaning the weed burner 32 5 3 Maintenance and repair verifications 33 6 Decommissioning and preservation 34 7 Faults ...

Page 7: ...ory regulations particularly the safety and accident prevention regulations must also be complied with 1 1 Intended use The weed burner may only be used to heat weed growth on paved concrete gravel and or asphalt surfaces outside enclosed spaces The weed burner may only be operated with propane gas The instructions of your gas supplier must be complied with Compliance with all the information in t...

Page 8: ...perated without the protective covers fitted as standard equipment it is used by unsuitable personnel the flame is ignited with a match lighter or burning piece of paper it is operated with non approved gas e g LPG or butane it is used in the preparation of foodstuffs it is used to ignite bushes or other flammable objects 1 3 Product observation Notify us without delay if faults or problems occur ...

Page 9: ...the area in which the safety or the health of persons is jeopardised Consequently no one should be in this area when the weed burner is in operation WARNING There is a risk of injury to persons in the danger zone due to burns on hot surfaces or the flame Consequently Only operate the weed burner if no one is in the danger zone Observe the danger zone carefully and switch off the weed burner when p...

Page 10: ...Page 10 of 35 01 07 2019 Limpar WKB 750 NOTE When the weed burner is pivoted to the left this change in direction also applies to the danger zone Safety Fig 1 Danger zone ...

Page 11: ...cluded that burning or hot foreign objects may be present at the operator workplace protective equipment must be worn long sturdy trousers safety footwear and protective gloves 1 7 Safety devices and protective devices 1 7 1 Safety switch The switch bracket for gas flow of the flame unit is designed as a dead man switch The valve of the flame unit is opened and the gas flows into the combustion ch...

Page 12: ... its intended use otherwise dangerous situations can occur with serious or fatal injuries as the result intended use see section 1 1 page 7 Due to poor lighting conditions during operation a number of dangers can occur Only operate the weed burner if there is adequate lighting Ensure that the weed burner is switched off and that the gas cylinder is closed when you leave the machine The housing of ...

Page 13: ...ffixed on the weed burner Safety stickers must not be removed If they have become unrecognisable or have been lost they must be replaced for the meaning of the stickers see section 1 10 page 15 Contact your specialist dealer to order new stickers Wear tight fitting clothing Long hair must be tied back Do not operate the machine in a faulty condition as this may result in considerable risk of injur...

Page 14: ... by the manufacturer The use of other parts voids the liability for the ensuing consequences Execution of the specified maintenance and repair tasks is part of intended use of the weed burner intended use particularly includes compliance with the maintenance intervals If you do not execute these tasks faultless function cannot be ensured Dangers for personnel and objects can occur We recommend tha...

Page 15: ... not remove any warning stickers Replace warning stickers that come off of the machine or that have already been lost Stickers Meaning Before using the weed burner the operating manual must be read All information contained in the operating manual must always be complied with Position On the handlebar in the operator s field of vision Warning general dangers Position On the rear of the machine in ...

Page 16: ...to a flame unit The gas is ignited in the combustion chamber by an ignition electrode The combustion chamber is permanently mounted to the chassis The weed burner has a handlebar with which it is guided by a pedestrian and from which all operating elements can be reached 2 1 Rating plate A rating plate is attached on the machine it contains the basic data for the machine see Fig 2 The type plate i...

Page 17: ... Description Switch bracket Combustion chamber Ignition button Lashing strap Chassis Fire extinguisher Valve of the propane gas cylinder Pushbutton hose break safety device 11 kg Propane gas cylinder Not included in the Pressure Skid Spark plug connector ...

Page 18: ...k width 75 cm Weight without gas cylinder 35 kg Gas type Propane Gas supply not included in the scope of delivery One 11 kg gas cylinder Gas pressure 0 5 4 bar Gas consumption per hour 4 8 kg h Power 60 kW Average Temperature approx 1000 C Ignition Electronic Battery Size AA 1 5 V Description ...

Page 19: ...3 2 and roll the weed burner off the packaging Before putting the weed burner into operation remove the protective film completely from the combustion chamber see Fig 3 page 17 Dispose of the packaging in accordance with the waste disposal regulations issued by your municipal administration 3 2 Mounting the handlebar See Fig 3 page 17 for instructions on mounting the handlebar Height adjustment is...

Page 20: ...in Fig 4 Do not tighten the screw connection firmly yet Repeat the procedure on the other side Firmly tighten the threaded unions of handlebar Fig 4 Sectional view of handlebar threaded union Stop nut M10 Chassis Handlebar Washer Ø 10 5 Truss head screw M10x40 Washer Ø17 Handlebar Direction of movement Commissioning Handlebar core Here flush with the end of the handlebar Here flush with the end of...

Page 21: ...the back panel on the chassis as shown in Fig 5 Fix the back panel in place as shown in Fig 5 Firmly tighten the threaded union Check that the back panel is firmly attached to the chassis Commissioning Fig 5 Mounting the back panel Back panel Screw M8x20 Stop nut M8 Washer Ø 8 5 ...

Page 22: ...nd switch off the weed burner if persons enter the danger area during operation The user is responsible relative to third persons who are in the work area entire area that will be processed DANGER Life threatening danger due to movements of the weed burner When operating the weed burner on slopes the weed burner can start moving without control due to gravity Therefore For tasks on sloping terrain...

Page 23: ...herefore Do not touch the combustion chamber during operation Let the weed burner cool down after work CAUTION Danger of injury and danger of material damage if the weed burner is operated in faulty condition Therefore Perform a visual inspection prior to each start of the machine Before each start check the gas connections of the weed burner Use leakage spray Prior to each start check the operati...

Page 24: ...ylinder Use a 11 kg standard gas cylinder filled with propane For the withdrawal of gas the cylinder must be positioned upright and it must be stable Thread the lashing strap through the cut outs of the back pack panel The strap must be placed lengthwise on the outside of the back panel see Fig 3 page 17 Place the gas cylinder upright on the chassis Tighten the tension strap around the gas cylinde...

Page 25: ...f delivery onto the coupling If there are no bubbles the gas clutch has been mounted correctly If there are bubbles check whether the gas coupling has been correctly mounted see section 4 1 1 page 23 Repeat this procedure If bubbles still form the weed burner must not be used Initiate the repair by the specialist dealer or by expert personnel 4 1 3 Checking the ignition Press the ignition button o...

Page 26: ...tly poorer than in dry and calm weather Wind can have a negative influence on burner performance Push the weed burner in the same direction as the wind To prevent damage to or burning the ground you must push forward immediately after igniting the weed burner The speed depends on the density and type of weeds The weeds should not be burned but heated up to approx 70 C The cells burst open and the ...

Page 27: ...The young plants are very sensitive and are easier to kill In autumn the resistance of the plants is limited and a final treatment would be very effective 4 2 1 Igniting the weed burner Open the valve of the gas cylinder Press the push button on the hose break safety device to pressurize the gas hose Check the gas connection of the cylinder for leaks see section 4 1 2 page 24 Set the pressure regu...

Page 28: ... exclusively to protect the combustion chamber from damage 4 2 4 Parking off the weed burner for a longer period of time Release the switch bracket The gas flow is stopped and the flame goes out Close the gas valve of the gas cylinder Pull the switch bracket onto the handlebar tube The remaining gas in the hose line can escape Let the weed burner cool down before transporting it or parking it in a...

Page 29: ...emove the gas cylinder from the chassis WARNING Danger of injury due to dismounted protective devices and safety devices If protective devices and safety devices are dismounted they no longer fulfil their function Therefore Always remount protective devices and safety devices after they have been dismounted for example for service and maintenance purposes WARNING The weed burner poses significant ...

Page 30: ...he gas coupling of the gas cylinder for leaks 4 1 2 Visually inspect the weed burner for damage in particular protective covers and gas hose Annual maintenanc e tasks performed by the specialist workshop Clean all burner nozzles Remove soot and other contamination Check the gas lines and couplings for leaks Check that all burners are working correctly Check the ignition electrode and electrical co...

Page 31: ...ce Contact your specialist dealer and have the weed burner repaired Bowden cables for flame unit Pull the switch bracket for the flame unit against the handlebar tube It must be possible to move the switch bracket up all the way to the handlebar tube with slight resistance Release the switch bracket for the flame unit The switch bracket must return to its initial position If the switch bracket doe...

Page 32: ...ntact with the housing If the ignition electrode is damaged contact your specialist workshop for repair 5 2 6 Cleaning the weed burner ATTENTION Cleaning the weed burner with a high pressure cleaner or water hose can damage the seals and bearings of the machine In addition the insulation of the combustion chamber can soak up water Therefore Do not clean the weed burner with a high pressure cleaner...

Page 33: ...Limpar WKB 750 01 07 2019 Page 33 of 35 5 3 Maintenance and repair verifications Maintenance tasks performed Date Signature Comments executed tasks Maintenance and repair ...

Page 34: ... your specialist dealer Fault Possible cause Measures Burners do not ignite Gas valve closed Open the gas valve Gas cylinder is empty Replace the gas cylinder Hose line not under pressure Press the push button of the hose break safety device Battery is dead Replace battery Spark plug connector is pulled off Fit on the spark plug connector Not all burners are ignited or they are burning irregularly...

Page 35: ...declaration loses its validity Designation Weed Burner WKB 750 Types FGB A1 75 cm working width Manufacturer Company 4F Maschinentechnik GmbH Address Am Gasspeicher 6 49453 Rehden Agreement is declared with the following additional directives that apply for the machine Electromagnetic Compatibility 2004 30 EC Low Voltage Directive 2014 35 EU Harmonised standards applied DIN EN ISO 12100 Other nati...

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