Micromot LHW 28547 - Grinder PROXXON - Free user manual and instructions

USER MANUAL Micromot LHW 28547 PROXXON

handling that does not comply with normal intended use,

• use for other purposes not mentioned in the manual,

• incorrectly executed repairs,

• ailure to heed safety instructions,

• external influences for which the manufacturer is not responsible We recommend using PROXXON original spare parts for all repair and maintenance work. Repairs should only be performed by qualified skilled personnel! Please note: All information contained in these operat- ing instructions - especially the technical data - corre- sponds to the status at the time of printing. We reserve the right to make further developments in the interest of technical progress. We wish you every success with the device. WARNING! Read all safety warnings and instructions. Failure to follow all safety warnings and in- structions listed below may result in electric shock, fire and/or serious injury.

KEEP ALL SAFETY WARNINGS AND INSTRUCTIONS

FOR THE FUTURE! Safety guidelines for all operations a) This power tool can be used as grinder, sander and abrasive cutting-off tool. Please observe all safety guidelines, instructions, illustrations and data provided with the device. Failure to follow in- structions listed below may result in electric shock, fire and/or serious injuries. b) This power tool is not suitable for working with wire brushes and polishing Uses for which the power tool is not intended can cause hazards and injuries. c) Do not use accessories which are not designed or recommended by the manufacturer specifically for this power tool. Just because the accessory can be attached to your power tool does not assure safe use. d) The rated speed of the bits and cutters must be at least equal to the maximum speed specified on the power tool. Accessories that turn faster than their rated speed can break and fly apart. e) The outside diameter and thickness of the bits and cutters must be within the capacity rating of your power tool. Incorrectly sized bits and cutters can- not be adequately guarded or controlled. f) The arbour size of discs, flanges, grinding discs or other accessories must properly fit the grinding spindle of your power tool. Bits and cutters that do not fit the grinding spindle of the power tool prop- erly will turn unevenly, vibrate very strongly and cause loss of control. g) Do not use damaged bits and cutters. Before each use, inspect bits and cutters such as sanding discs for chips and cracks, grinding discs for cracks, strong wear or tear, wire brushes for loose or broken wires. If the power tool or bits and cut- ters are dropped, check for damage or install un- damaged bits and cutters. After you have inspect- ed and installed the bits and cutters, keep your- self and any other persons in the vicinity away from the plane of the rotating bits and cutters and run the device at maximum rotational speed for one minute. Damaged bits and cutters usually break during this test time. h) Wear protective equipment. Depending on the ap- plication, use full face protection, eye protection or protective goggles. If appropriate, wear a dust mask, hearing protection, protective gloves or a special apron capable of stopping small abrasive and material particles. The eyes are to be protect- ed from flying debris generated during various op- erations. Dust masks or respirators must filter the- 11 -

ust generated during the operation. If you are ex- posed to loud noise for a long time, you may suffer hearing loss.

i) Keep other people at a safe distance away from

your work area. Anyone who enters the working area must wear personal protective equipment. Fragments of the work piece or broken bits and cut- ters can fly away and cause injuries even beyond the immediate area of work. j) Hold the device only by its insulated grip surfaces if you perform work where the bits and cutters could contact hidden power cables or your own mains cable. Contact with a live cable can energize metal device parts and cause electric shock. k) Keep the mains cable away from rotating bits and cutters. If you lose control of the device, the mains cable could be cut or snagged, and your hand or your arm could get pulled into the rotating bits and cutters. l) Never set down the power tool until the bits and cutters come to a complete stop. Turning bits and cutters grab the depositing surface and pull the power tool out of your control. m) Do not allow the power tool to run while you are carrying it. Your clothing could get snagged acci- dentally in the rotating bits and cutters, causing the power tool to pierce your body. n) Regularly clean the ventilation slits of your power tool. The motor fan sucks dust into the housing and a strong accumulation of metal dust can cause elec- trical hazards. o) Do not use the power tool in the vicinity of com- bustible materials. Sparks could ignite these ma- terials. p) Do not use bits and cutters that require liquid coolants. The use of water or other liquid coolants can cause electric shock. Additional safety guidelines on grinding and abrasive cutting. a) Special safety guidelines on grinding and abra- sive cutting: b) Use only the grinding tools approved for your power tool and the protective guard designed for these grinding tools. Grinding tools that are not designated for the power tool cannot be adequately guarded and are therefore unsafe.

The protective guard must be attached securely to the power tool and adjusted in such a way as to achieve maximum safety, i.e. the smallest possible part of the grinding tool is open to the operator. The

rotective guard is meant to protect the operator from fragments and accidental contact with the grinding tool. d) Grinding tools may only be used for the recom- mended applications. For example: Never grind with the lateral surface of a cutting disc. Cutting discs are intended for removing material with the edge of the disc. Lateral forces on these grinding tools can shatter them. e) Always use undamaged clamping flanges in the correct size and shape for your selected sanding disc. Suitable flanges support the sanding disc and reduce the danger of sanding disc breakage. Flanges for cutting discs can differ from other sand- ing disc flanges. f) Do not use worn sanding discs from larger power tools. Sanding discs for larger power tools are not designed for higher rotational speeds of smaller power tools and can shatter. Further special safety guidelines on abrasive cutting: a) Avoid jamming the cutting disc or applying too great contact pressure. Do not make excessively deep cuts. Overstressing the cutting disc increases its load and its susceptibility to twisting or jamming and thus the possibility of recoil or grinding tool breakage. b) Avoid the area in front of and behind the rotating cutting disc. If you move the cutting disc in the work piece away from you, recoil may catapult the power tool with the rotating disc directly towards you. c) If the cutting disc binds or if you interrupt work, switch off the device and hold it still until the disc has come to a complete stop. Never attempt to pull the running cutting disc out of the cut, other- wise recoil may occur. Determine and eliminate the cause for binding. d) Do not switch the power tool back on as long as it is in the work piece. Allow the cutting disc to reach its full rotational speed before carefully continuing the cut. Otherwise, the disc can get snagged, jump out of the work piece or cause recoil. e) Support sheets or large work pieces to minimize the risk of recoil caused by a jammed cutting disc. Large work pieces can sag under their own weight. The work piece must be supported on both sides of the disc; namely near the separating cut as well as at the edge. f) Be especially careful when making “pocket cuts” in existing walls or other blind areas. The dipping GB- 12 -

utting disc can cause recoil when cutting into gas or water lines, electric cables or other objects. Special safety guidelines on sanding: a) Do not use any overdimensioned sanding disc pa- pers, but comply with manufacturer’s specifica- tions on sanding paper size. Sanding papers that extend beyond the grinding disc can cause injuries as well as lead to binding, tearing of the sanding discs or recoil. For use in dry environments only Protection class II device Please do not dispose off the machine! Wear safety glasses! Description of the machine: The user who frequently uses his long-neck angle grinder in cramped spaces will appreciate the device. A slender shape, imposing power and a comprehensive range of accessories make the LHW the ideal tool for deburring, rough-machining, precision polishing, rounding off edges, colour removal, removing rust, sep- arating small parts and sharpening of tools. The LHW can easily machine many materials, such as for example steel, non-ferrous metals, glass, wood and ceramics. Ideally suited for model, tool and mould construction, but also, for example, in the motor vehicle sector or for repairs to vehicles. The deflection is achieved through the precise, double ball-bearing bevel gear. It is driven by a powerful special motor which is efficiently force-cooled against over- heating. A sanding disc of high-grade corundum (grit 60), a fan sander (grit 100) and a fabric-reinforced cut- ting disc are included. Key

4. Connection cable with mains plug

Technical Data Motor: Voltage 230 V, 50/60 Hz Output power 100 Watt Unit: Rotational speed 15000 rpm Disc diameter 50 mm Length 250 mm Weight approx. 700 g Generated noise ≤ 78 dB (A) Vibration at the handle ≤ 2.5 m/s

Noise/vibration information The information on vibration and noise emission has been determined in compliance with the prescribed standard- ised and normative measuring methods and can be used to compare electrical devices and tools with each other. These values also allow a preliminary evaluation of the loads caused by vibration and noise emissions. WARNING! Depending on the operating conditions while operating the device, the actually occurring emissions could differ from the values specified above! Please bear in mind that the vibration and noise emis- sion can deviate from the values given in these instruc- tions, depending on the conditions of use of the tool. Poorly maintained tools, inappropriate working meth- ods, different work pieces, too high a feed or unsuitable work pieces or materials or unsuitable bits and cutters (here: saw blade) can significantly increase the vibration load and noise emission across the entire work period. To more accurately estimate the actual vibration and noise load, also take the times into consideration where the device is switched off, or is running but is not actu- ally in use. This can clearly reduce the vibration and noise load across the entire work period.

• Ensure regular and proper maintenance of your tool

• Stop operation of the tool immediately if excessive vi- bration occurs!

• Unsuitable bits and cutters can cause excessive vibra- tion and noises. Only use suitable bits and cutters!- 13 -

Take breaks if necessary when working with the device! Commissioning and operation General handling of the device: CAUTION!

• Do not work with damaged or worn bits and cutters! Make sure the tools are in perfect condition. Damaged or worn tools can break and cause injuries!

• Never press the lock button if the bits and cutters and are still rotating.

• Please note: The utilised bits and cutters may not ex- ceed a maximum diameter of 50 mm!

• Make sure that the permissible maximum speed of the bits and cutters does not undershoot the speed of the device! The tool can break when the maximum per- missible speed is exceeded. Flying parts can cause damage and severe injuries!

• Never work without dust protection mask and safety glasses. Some dusts have a hazardous effect! Materi- als containing asbestos may not be machined!

• Do not work with damaged tools!

• Ensure the work piece is fixed securely! Loose work pieces should be clamped in a suitable fixture. This prevents the work pieces from flying about.

• A correct and uniform speed achieves a high grinding performance, not excessive contact pressure! Exces- sive pressure is to be avoided: it only stresses the de- vice and can even damage the bits and cutters!

• Hold the device without covering the ventilation slots. If it overheats, you absolutely must shut off the device and allow it to cool down.

• Do not use the cutting disc for rough-machining. Risk of fracture!

• Work only with a correctly adjusted protective guard!

• When storing the bits and cutters, make sure they are reliably protected from damage! Hold the device by the insulated gripping surfaces, as the grinding surface can hit its own connecting cable. Damage to a “live” wire can stress metal parts and cause an electric shock. Replacing the Grinding Disc Your LHW long-neck angle grinder is ready for opera- tion on delivery.

re-assembled with a fan sander with grain 100 and 50 mm diameter, ideal for grinding and smoothing mal- leable cast iron, grey cast iron, stainless steel, steel, non-ferrous metal, wood and plastic. The supplied high-grade corundum sanding disc is ideal for roughing, grinding, sharpening and removing rust from metal or non-ferrous metal, and the included corundum-bound cutting disc is perfect for abrasive cutting of steel, non-ferrous metal, plastic or wood. We also have a great number of additional problem solvers in our comprehensive range of accessories.

disc 3 and the grinding disc 2.

4. Fit a new grinding disc.

5. Press the locking button 1 and tighten the fasten-

ing screw 4. Adjust the protective guard. IMPORTANT! Disconnect the plug from the mains before the follow- ing.

1. Release fastening screw 1 (Fig. 3) and turn the

protective guard to the desired position.

2. Retighten the fastening screw.

NOTE! Do not press too hard when using the grinder. Good grinding performance can only be achieved using the correct and constant rotational speed. To achieve the best results when roughening, apply the grinding disc to the grinding surface at an angle of between 30° and 40° and move evenly back and forth over the workpiece. Do not bend the grinding disc into the cutting surface during cutting work.- 14 -

MPORTANT! Do not use the cutting disc for roughening work. Risk of fracture! IMPORTANT! If the unit overheats, switch it off and allow it to cool. Maintenance, cleaning and care ATTENTION! Disconnect the mains plug prior to every adjust- ment, maintenance measure or repair! NOTE! Every device is dirtied by dust when working. Cleaning is therefore essential. To ensure a long service life, how- ever, the machine should be cleaned with a soft cloth or brush after each use. Mild soap or other suitable cleaning agent may be used in this context. Solvents or cleaning agents containing alcohol (e.g. petrol, cleaning alcohols, etc.) should be avoided, since these can attack plastic casings. The apertures required for cooling the motor must al- ways be kept free of dust and dirt. Accessories For more detailed information on accessories, please request our device catalogue from the address specified on the last page in the warranty information. Please note in general: Proxxon bits and cutters have been designed to work with our machines, which makes them optimal for their use. We will not assume any liability whatsoever for the safe and proper function of our devices when using third- party bits and cutters! Service note Please note: The mains power input may only be re- placed by our Proxxon Service Department or a quali- fied specialist!