USER MANUAL IN ORIGINAL ADJUSTABLE
Contents
1. 8 3 6 CONSUMABLE SUPPLIES 2 020 in Son a ihe den eed eesti en eines 8 3 7 MAINTENANCE eu ar On ethene Ban Rn 8 3 8 HANDLING OF USER MANUAL cccccccescessesscscescessesscsecseesecsscescssecsscsecsscesecsecseceseesscseeeeease 8 ASSEMBLY DISASSEMBLY 9 4 1 DISASSEMBLY OR SCRAPPING OF THE 9 4 2 REPARATION AND SPARE PARTS scccessscessecesseceeseccessecessecesecesecensuccessecessecensesensecesseeenseees 9 4 3 CYLINDER PUMP COUPLING cccccssccesssccsseccessecessecesseceseccseceessecessecesecenseeenseecesesensesens 10 4 4 REFILLING OF INDIVIDUAL CYLINDERS ccccccccsssccessccessecessecessecceseecessecensecenseecsseesetsesens 11 4 5 TROUBLESHOOTING CHART HYDRAULIC 13 PRODUCT SPECIFICATION ccsssssssssssssssssssecsssssessssecsssesssessessesscsssecsseesessssecsssesesseresseseeee LO EC DECLARATION aa a a KR HE etc ie 18 1 General Information You have in your possession a hydraulic adjustable height workbench used mainly to adjust work surfaces to ergonomically suitable heights 1 1 Function of the System Ljunggren amp daughters hydraulic workbench works on the principle of two communicating vessels One of the vessels is in the pump 4 u2. Ergofokus Ergonomics in focus since 2001 USER MANUAL IN ORIGINAL ADJUSTABLE HEIGHT WORKBENCH _ L amp Do Ljunggren amp daughters AB Tel 46 243 153 50 Backes vag 3 Fax 46 243 153 59 784 54 Borlange E mail info ergofokus se SWEDEN Web www ergofokus se CONTENTS 1 5 6 GENERAL INFORMATION is sss sssossossossssn nsssessopessocn sossess nssnessperssensinssersspssosssiesses nsssnssesssssedd 1 1 FUNCTION OF THE SYSTEM osere eeraa eE EEA ANE TEE AAE SEENE Oa 3 1 2 PRODUCT VV RRA NTY Kasse ne eis ask Ras 3 PROHIBITIONS WARNINGS REQUIREMENTS eessesnsnesssossesnsnennsnennsnesesnsnennsnenneneseennD 2 1 GENERAL INFORMATION cccsccssscesseesscescceseeeseesseceseceseceseceseceseceseceseesseeeseeeseesaeeeeeeneeeeeenes 5 2 2 HAZARD NOTIGESH u 5 2 9 USE OF MACHINE donee eine 6 2 4 MAINTENANCE AND REPAIR c cccesseeessceescceesseeeeseeceseecnscecececsneeeaaeecsaeecsseeeseeeeeaeeseeeenaeees 6 3 1 FUNCTION OF THE SYSTEM six dost ie covtsuleter tees devise erg rd bes tr 7 3 2 OPERATION sosfscs 8er Sc nen He os ds 7 3 3 SARE Liisi nis dt lends de ele as le de tale debts OUT OET A 7 3 4 STARTING AND STOPPING a cic dues 2 be fees ies fobs 2 ig Ate Ale a a An tobe ete 7 3 5 PROBLEMS DURING STARTING OPERATION OR
3. Hose connection loose Order instructions for Description of Refilling Individual Cylindersoand replace the parts in the coupling Pump broken Order instructions on fReplacement of Pumpo e Hose breakage Cause Measure Hose damaged Order instructions on fReplacement of Hosed N B When making repairs the hydraulic system workbench must always be unloaded and the motor unit not powered 14 5 Product Specification Product Ljunggren amp daughter hydraulic adjustable height workbench Model L amp D Bench with MF44150 pump AB2300 cylinder MOMF motor MDS230 ECU MBOX9 control unit and TUBM hose Functional Principle of the System Single acting hydraulic system with manual crank operation or electric motor operation Operating Conditions The workbench is not made to be continuously raised and lowered 6 a maximum of 2 minutes operation should be followed by at least 8 minutes of idle time The hydraulic system can be sensitive to corrosive environments Prior to using it in such environments kindly contact Ljunggren amp daughters AB Maximum Load on Various System Combinations These loads must not be exceeded Pump with 18 mm diameter in the pressure element Cylinder diameter 1 leg System 2 leg System 3 6 leg Systems 14 mm 115 kg 230 kg 350 kg 16 mm 150 kg 300 kg 450 kg 18 mm 200 kg 400 kg 600 kg Pump with 20 mm diameter in the pressure element Cylinder d
4. PA12 Nylon Hose min curvature radius 30 mm Hose other The hose must be shielded from mechanical thermal chemical and other damage If necessary the entire hose must be built into a protective casing Hydraulic oil Castrol Hyspin AWS 15 Oil volume 4 leg system stroke 300 mm 0 25 litre Oil volume 6 leg system stroke 300 mm 0 35 litre Oil flashpoint closed Above 140 degrees C In case of oil leakage Wipe up the spilled oil immediately and clean with an oil solubilising cleaning agent e g dish detergent or car washer fluid to prevent the risk of slipping Discard spilled oil and other contaminated objects at a suitable collection point or similar facility for proper handling Oil must NOT be poured down the drain First Aid Procedure Concerning Oil Eyes Rinse immediately with large amounts of water for several minutes Skin Wash thoroughly with soap and water or with some other suitable skin cleanser as quickly as possible Inhalation Move away from the exposure to fumes Ingestion Seek medical aid and indicate the product code Do NOT induce vomiting Suitable Fire Fighting Carbon dioxide extinguishers powder foam extinguishers or water mist Do not use water streams 16 Cleaning Only mild cleaning agents may be used for example car washer fluid The motor unit and control panel must not be subjected to water flushing They can be wiped off with wet rags as needed Powerful cleanin
5. and as long as it has not be disassembled or subjected to any kind of tampering The bench is raised by the oil being forced out from the pump through the hose and into the cylinder The bench is lowered but this time this cylinder is compressed and thus the oil is returned to the pump by the weight on the bench and thereby on the cylinder 2 Prohibitions Warnings Requirements 2 1 General Information The workbench must not be continuously raised and lowered 6 a maximum of 2 minutes of operation should be followed by at least 8 minutes of idle time This operating manual must always be available for reference at the workbench The transformer must only be connected to outlets of the same voltage as indicated on its rating plate The workbench may only be moved when it is not bearing a load In the meantime any wheels must be in locked mode Make sure that the control unit is always kept in its holder so that no accidental motion occurs as a result of someone touching the panel When the workbench is to be attached to a wall using a wall bracket the wall must be reinforced with a batten measuring 100 x 50 mm to which the retaining screws can be anchored Hexagon head wood screws measuring at least L 100 diam 10 mm must be used as retaining screws 2 2 Hazard Notices The hose must not be against sharp edges non chamfered holes moving parts or the like Electrical cables connecting cables that are not correctl
6. turn or until you see that there is oil in the open connection holes on the pump 12 First thread on the pressure nut and then the compression ring onto the hose from the cylinder connect it the same way to the pump as to the cylinder and tighten to 10 Nm 13 Repeat step 12 with the remaining cylinders 14 Crank run the system halfway and check to see that the cylinders start to move simultaneously and that they extend equally as much outward and with a smooth motion Also make sure that the cylinders do not seem to be fspongyOwhen under pressure If one or more of the cylinders seems fspongyd follow Refilling of Individual Cylindersoand try again according to the above instructions 15 Put the cylinder and pump in place Secure any loosely hanging hoses The system is now ready for use N B 10 Make sure that the cylinder is completely emptied of oil before being connected to the pump or else the hydraulic system will be destroyed Make sure that the connections are tightened to 10 Nm or else there is a risk of oil leaking 4 4 Refilling of Individual Cylinders Start by removing the load from the system workbench by jacking it up or placing the workbench to the side 11 1 Crank run the system WITHOUT A LOAD until the defective cylinder has moved 30 40 mm outward 2 If possible remove the pump from the bench and place it vertically with the hose connections upward if this is not possible make sure th
7. at the end of the pump with the hose is placed higher than the oppose end M B Be careful not to damage the hoses min curvature radius 30 mm 3 Unscrew the affected cylinder hose connection on the pump 4 Keep the end of the hose below the level of the oil in the oil bottle we sent to you and slowly extract the piston The oil is sucked in by means of the vacuum created Keep the piston in the extracted position for 1 1 min 5 Hold the cylinder vertically with the hose collection upward if necessary unscrew the cylinder from the bench and push the piston in until air free oil comes out of the hose Tip This is best seen if the end of the hose is kept below the level of the oil in the bottle 6 Repeat steps 4 and 5 until the piston in this cylinder sticks out approximately 50 mm farther than those in the fworking cylinders 7 Crank run the system approximately turn or until oil comes out of the open connection hole on the pump 8 Connect the hose to the pump 9 Crank run the pump back to the bottom position while at the same time you push the piston in on the refilled cylinder Then push the pistons in on the other cylinders 10 With the pump at the bottom position the piston in the refilled cylinder will stick out farther than the pistons in the other cylinders 11 Unscrew the hose connection from the pump again and press out the excess oil into the oil bottle by pushing the piston in to the bottom for a crank op
8. er cable out from the motor unit Then refer to the Troubleshooting section further on in this user manual 3 6 Consumable Supplies In the event of an oil leak or spill wipe up the spilled oil immediately and clean with an oil solubilising cleaning agent e g dish detergent or car washer fluid to prevent the risk of slipping Discard spilled oil and other contaminated objects at a suitable collection point or similar facility for proper handling The oil must NOT be discharged into the sewer or be disposed with other refuse First Aid Procedure Concerning Oil Eyes Rinse immediately with large amounts of water for several minutes Skin Wash thoroughly with soap and water or with some other suitable skin cleanser as quickly as possible Inhalation Move away from the exposure to fumes Ingestion Seek medical aid and indicate the name of the product Do NOT induce vomiting 3 7 Maintenance The hydraulic system is maintenance free given ordinary use and thus needs no servicing Normal cleaning of the hydraulic system shall be done using a mild oil solubilising cleaning agent e g dish detergent or car washer fluid The motor unit and control panel must not be subjected to water flushing They can be wiped off with wet rags as needed Powerful cleaning agents containing for example acids ammonia or lye must not be used 3 8 Handling of User Manual It is important that all those assembling and using the workbenc
9. erated system and by pressing the piston in until the protruding section is as long as those in the other cylinders for a motor operated system 770 For a motor operated system set the piston as shown in the diagram when you press the oil out Reconnect the hose in the pump and tighten it to 10 Nm 12 Crank run the system halfway and check to see that the cylinders start to move simultaneously and that they extend equally as much outward and with a smooth motion Also make sure that the refilled cylinder does not seem fspongyOwhen under pressure Repeat the above steps as needed until the hydraulic system is working properly again 13 Put the cylinder and pump back in place The workbench with the hydraulic system is now ready to be used again 12 4 5 Troubleshooting Chart Hydraulic System e The motor can be heard and the coupling rotates but the workbench is not moving Cause Measure The shearing pin has broken Order instructions on fReplacement of Shearing Pin on the Motor Unit Pump broken Order instructions on Replacement of Pump 0 e The motor can be heard and the coupling does not rotate The worm gear motor is broken Order instructions on fReplacement of Electric Motord e The motor cannot be heard no current to the circuit board Cause Measure Transformer overloaded Unplug the transformer cord from the wall outlet and plug it bac
10. g agents containing for example acids ammonia or lye must not be used Environmental Considerations As mentioned above hydraulic oil must be disposed of at a suitable destruction or processing location in the event of leakage or when the workbench is scrapped The rest of the workbench consists of fully recyclable and thereby environmentally friendly parts Warranty Ljunggren amp daughters workbench is covered by a warranty against manufacturing defects for a period of 12 months following the date of manufacture Ljunggren amp daughters warranties will only be honoured provided that the workbench has been used in the manner intended and as long as it has not be disassembled or subjected to any kind of tampering 17 EC Declaration of Conformity for Machinery Ljunggren and Daughters AB Backes vag 3 784 54 Borlange Sweden Declares under its sole liability that the workbench designated as L amp D Workbench Serial number Satisfies the Essential Health and Safety Requirements on the Design and Manufacture of Machinery and Safety Componentso according to the European Parliament amp and Council Directive 2006 42 EC Borlange on Sara Ljunggren Ergofokus Ergonomics in focus since 2001 L amp D WORKBENCH In various designs Ljunggren amp daughters AB Tel 46 243 153 50 Backes vag 3 Fax 46 243 153 59 784 54 Borlange E Mail info ergofokus se SWEDEN Web www ergofokus se 19
11. h read through and have access to this user manual It must be kept in close proximity to the workbench the system 4 Assembly Disassembly Reparation All work done to the hydraulic system be it assembly disassembly repairs or any other work must be done while the bench is not under pressure not loaded and is disconnected from any electrical power source Other points that pertain to all the work on the system include the following The hose must not be against sharp edges non chamfered holes moving parts or the like The minimum curvature radius is 30 mm Wherever there is a risk of the hose in anyway being at risk of damage it must be built in or shielded The workplace must be arranged so that no risk of tipping or falling occurs 4 1 Disassembly or Scrapping of the System Hydraulic oil must be disposed of at a suitable destruction or processing facility in the event of leakage or when the workbench is scrapped The rest of the workbench consists of fully recyclable and thereby environmentally friendly parts 4 2 Reparation and Spare Parts The hydraulic system must always be free of any load and the motor unit must be without electric current when any work is being done on them The following parts on the motor device can be replaced Electric motor e Circuit board e Fuse circuit board e Transformer e Control unit e Limit switch The only repair measure available for the cylinder or pump is sim
12. iameter 1 leg System 2 leg System 3 6 leg Systems 14 mm 115 kg 230 kg 285 kg 16 mm 150 kg 300 kg 350 kg 18 mm 200 kg 400 kg 450 kg These values only apply when one cylinder is used in each leg of the bench When other solutions are used e g two cylinders per bench leg other maximum loads apply Contact Ljunggren amp daughters AB or their representatives for more information Physical Dimensions See the enclosed technical drawings of the hydraulic system and the workbench Temperature Ranges Operation 0 to 45 degrees C Transport 20 to 60 degrees C After being transported at temperatures below 0 degrees C the workbench must rest within the premises at operating temperature for at least three hours prior to being used 15 Electrical Supply Frequency 50 60 Hz Primary voltage 230 V AC also available in 110 115 V AC Secondary voltage 29 V AC Secondary current at maximum load 12 A Maximum power consumption 350 W Fuse 1 in transformer Thermal fuse 152 degrees C Destructive not replaceable Fuse 2 in transformer PTC thermal fuse Reset when plug is pulled EMC Requirements Sources of interference with emissions of electromagnetic or electrical fields for example high current cables that are stronger than what is allowed according to the applicable EMC directives must not be located in the vicinity motor pump unit Hydraulic System Hose exterior diameter 4 5 mm Hose material
13. ight of work locations The workbench must not be used as A means of transport either for goods or for persons A jack or for lifting things or persons A safety device A clamping device A counterstay A pressing machine It is expressly forbidden to use the system in environments that exceed the limits indicated in this operating manual 2 4 Maintenance and Repair The workbench shall be placed in such a manner that cleaning is facilitated that bacteria do not accumulate and that dirt traps are not formed The motor unit and control panel must not be subjected to water flushing They can be wiped off with wet rags as needed The hydraulic system must always be free of any load and the motor unit must be without electrical current when any work is being done on them Residual oil resulting from assembly or repair of the hydraulic system shall be treated as environmentally hazardous waste even if it has been deemed not to entail a risk of injury or damage during normal handling Ljunggren amp daughters product liability only extends to products that were defective coming from the factory Ljunggren amp daughters product liability will be disclaimed in part or in whole if the user does not follow the care instructions or uses spare parts that are not original For each repair there is a written set of instructions available in order to minimise the risk of error request such instructions when you orde
14. ight regardless of whether one bench leg bears a greater load than the others do The motion in the system is created when the screw 1 that goes through the plastic nut is turned either by means of a manual crank or with the help of an electric motor device The system is not intended for continuous operation 3 2 Operation The height is adjusted either by using a manual crank or with the aid of an electric motor The crank is tiltable can be readily folded in and hidden under the benchtop when not in use The electric motor device is operated by means of a control unit consisting of two buttons One for upward adjustment and one for downward adjustment of the bench One of the buttons must be kept depressed in order to the system to move Thus the system does not feature any automatic operation 3 3 Safety The transformer must only be connected to outlets of the same voltage as indicated on its rating plate The workbench and hydraulic system must never be uncoupled or repaired while under hydraulic pressure or when connected to the electrical mains 3 4 Starting and Stopping The workbench and the hydraulic system have no particular starting and stopping instructions as operation is merely a matter of an on off function 3 5 Problems during Starting Operation or Stopping If a problem occurs during any of the phases immediately release the button on the control unit then pull the plug out of the wall or pull the transform
15. k in the fuse is thereby reset Transformer broken Replace transformer e The motor cannot be heard but the relay can be heard clicking no current to the motor Cause Measure The circuit board is broken Order instructions on Replacement of Circuit Boardo e The motor cannot be heard but the relay can be heard clicking current to the motor Cause Measure The motor is broken Order instructions on fReplacement of Electric Motoro Limit switch broken Order instructions for fReplacement of Limit Switch e The motor cannot be heard and no relay can be heard clicking no current to the motor Cause Measure The circuit board is broken Order instructions on fReplacement of Circuit Boardo 13 Short circuit in the circuit board Order instructions on fReplacement Circuit Board Fuseo e The workbench can only be run in one direction Cause Measure The circuit board is broken Order instructions on fReplacement of Circuit Boardo Limit switch broken Order instructions for fReplacement of Limit Switch e The workbench moves downward too which the motor speeds Cause Measure Electrical resistor broken Replace electrical resistor e Cylinder leakage Cause Measure Hose connection loose Order instructions for Description of Refilling Individual Cylindersoand replace the parts in the coupling The cylinder is broken Order instructions on fReplacement of Cylinderd e Pump leakage Cause Measure
16. ling 1 Cut the hoses to the desired lengths use a utility knife to obtain a clean and square cut 2 Unscrew the pressure nut on the first cylinder and remove the sealing ball with the help of a magnet 3 Thread on the pressure nut and then the compression ring on the hose if you have a C01 cylinder thread on the black plastic cap frst 4 Push the hose down into the connection hole on the cylinder bring the compression ring down and tighten the pressure nut to 10 Nm Be careful to keep the hose in fplacedwhile you tighten the pressure nut N B The cylinder must not be fastened in the tube or piston during tightening 5 If you have a C01 cylinder push the black plastic cap down on the cylinder 6 Hold the cylinder vertically with the connection upward keep the end of the hose down in an oil bottle and push the cylinder piston in all the way On the C01 cylinder the piston runs evenly with the housing however on the C02 C04 cylinders the piston sticks out 12 mm when the cylinder is fully compressed 7 Do not allow the end of the hose to hang down or lie against anything for an extended amount of time If you do you run the risk of introducing air into the system 8 Repeat steps 2 7 with the rest of the cylinders 9 Place the pump vertically with the hose connections upright 10 Unscrew the pressure nuts in the pump and use a magnet to remove the sealing balls located in the connection holes 11 Crank run the system
17. nder the bench while the other cylinder is in one of the bench legs 6 the vessels are connected by a plastic hose 5 When the bench is to be raised the necessary amount of oil is quite simply pumped out of the vessel in the pump 4 through the hose 5 to the cylinder in the bench leg 6 and the bench is thereby pushed upward When the bench is to be lowered an underpressure is generated in the pump 4 by means of its piston 3 being pulled back The oil in the cylinder is then forced back through the hose into the pump by means of the overpressure generated by the weight of the bench The vessels inside the pump are mechanically connected to each other by a plastic nut 2 so that all bench legs are at the same height and that they remain at the same height regardless of whether one bench leg bears a greater load than the others do The motion in the system is created when the screw 1 that goes through the plastic nut is turned either by means of a manual crank or with the help of an electric motor device By varying the pump and cylinder diameters different lift forces and speeds are obtained See Product Specification page 14 1 2 Product Warranty Ljunggren amp daughters workbench is covered by a warranty against manufacturing defects for a period of 24 months following the date of manufacture Ljunggren amp daughters warranties will only be honoured provided that the workbench has been used in the manner intended
18. ply to replace the entire unit they must not be taken apart This is to prevent the risk of malfunction All these parts are supplied as spare parts from Ljunggren amp daughters AB or its representative For each repair there is a written set of instructions available in order to minimise the risk of error request such instructions when you order the spare parts and read them thoroughly before you begin effecting repairs Kindly state the designation from the product6 rating plate when ordering In order for a product warranty to be valid following a repair the following conditions apply e Only original parts may be used when making any repairs modifications may be made to products such as the pump cylinder motor transformer or circuit board e Any repairs shall be made according to the enclosed instructions e The workbench must continue to be used only in accordance with the specified data Residual oil resulting from assembly and repairs to the hydraulic system shall be treated as environmentally hazardous waste even if it has been deemed not to entail a risk of injury or damage during normal handling Ljunggren amp daughters product liability is extends only to products that were defective coming from the factory Ljunggren amp daughters product liability will be disclaimed in part or in whole if the user does not follow the care instructions or uses spare parts that are not original 4 3 Cylinder Pump Coup
19. r the spare parts and read them thoroughly before you begin effecting repairs In order for a product warranty to be valid following a repair the following conditions apply Only original parts may be used when making any repairs modifications may be made to products such as the pump cylinder motor transformer or circuit board Any repairs shall be made according to the enclosed instructions The workbench must continue to be used only in accordance with the specified data 3 Operator s Manual 3 1 Function of the System Ljunggren amp daughters hydraulic workbench works on the principle of two communicating vessels One of the vessels is in the pump 4 under the bench while the other cylinder is in one of the bench legs 6 the vessels are connected by a plastic hose 5 When the bench is to be raised the necessary amount of oil is quite simply pumped out of the vessel in the pump 4 through the hose 5 to the cylinder in the bench leg 6 and the bench is thereby pushed upward When the bench is to be lowered an underpressure is generated in the pump 4 by means of its piston 3 being pulled back The oil in the cylinder is then pushed back through the hose into the pump by means of the overpressure generated by the weight of the bench The vessels inside the pump are mechanically connected to each other by a plastic nut 2 so that all bench legs are at the same height and that they remain at the same he
20. y laid in upon installation may be pinched and conduct electricity to the bench There is also a risk that electrical cables connecting cables may contact sources of heat in the kitchen The workplace must be arranged so that no risk of tipping or falling occurs Nearby counters benches or the like shall have smooth walls that minimise the risk of crush injuries when raising the bench The bench must stand on a flat horizontal surface Keep hands and other body parts away from the bench when it is being raised or lowered There is a risk of being crushed between the benchtop and other nearby edges The maximum load on the workbench must not be exceeded statically or dynamically The workbench must not be subjected to the effects of any mechanical thermal chemical electromagnetic or electrical fields for example high power cables beyond the limits indicated in this user manual If the workbench is used in a location where there is a risk of damage to property or injury to persons by a movement caused by the system it is then incumbent upon the occupant to ensure that the appropriate safety devices are used in order to prevent such damages and injuries from occurring In the event of an oil leak or spill wipe up the spilled oil immediately and clean with an oil solubilising cleaning agent e g dish detergent or washer fluid to prevent the risk of slipping 2 3 Use of the Machine This system is intended to be used in adjusting the he
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