BOSCH PEX 300 AE (01) PDF MANUAL

Keep your work area clean and well lit. Cluttered or dark areas invite accidents.

Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.

Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.

Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.

Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.

Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.

When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.

If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.

Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.

Use personal protective equipment. Always wear eye protection. Protective equipment such as a dust mask, non-skid safety shoes, hard hat or hearing protection used for appropriate conditions will reduce personal injuries.

Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents.

Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.

Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.

Dress properly. Do not wear loose clothing or jewellery. Keep your hair and clothing away from moving parts. Loose clothes, jewellery or long hair can be caught in moving parts.

If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of dust collection can reduce dust-related hazards.

Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.

Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.

Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.

Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.

Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.

Maintain power tools and accessories. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.

Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.

Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.

Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.

Only use the power tool for dry sanding. Water entering a power tool will increase the risk of electric shock.

Ensure that no persons are at risk due to flying sparks. Remove combustible materials from the surrounding area. Flying sparks are created when sanding metals.

Warning: Danger of fire! Avoid overheating the workpiece and the sander. Always empty the dust collector before taking a break from work. Sanding dust in the dust bag, microfilter, paper bag (or in the filter bag or vacuum cleaner filter) can spontaneously combust under certain conditions, for example if flying sparks are created when sanding metals. This risk is increased if the sanding dust is mixed with paint or polyurethane residue or with other chemical substances and if the workpiece is hot as a result of prolonged work.

Clean the air vents on your power tool regularly. The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.

Always wait until the power tool has come to a complete stop before placing it down.

Secure the workpiece. A workpiece clamped with clamping devices or in a vice is held more secure than by hand.

The power tool is intended for dry sanding of wood, plastic, metal, filler and varnished surfaces. Power tools with electronic control are also suitable for polishing.

The main components are:

(1) Orbital stroke rate preselection thumbwheel

(2) On/off switch

(3) Dust box, complete (microfilter system)

(4) Sanding pad

(5) Handle (insulated gripping surface)

(8) Screws for sanding disc

(9) Sanding pad holder

(10) Extraction outlet

(11) Filter element (microfilter system)

Noise emission values determined according to EN 62841-2-4:

Typically, the A-weighted noise level of the power tool is: Sound pressure level 87 dB(A); sound power level 96 dB(A). Uncertainty K = 3 dB.

Wear hearing protection!

Vibration total values aₕ (triax vector sum) and uncertainty K determined according to EN 62841-2-4:

aₕ = 9 m/s², K = 1.5 m/s².

The vibration level and noise emission value given in these instructions have been measured in accordance with a standardised measuring procedure and may be used to compare power tools. They may also be used for a preliminary estimation of vibration and noise emissions.

The stated vibration level and noise emission value represent the main applications of the power tool. However, if the power tool is used for other applications, with different accessories or is poorly maintained, the vibration level and noise emission value may differ. This may significantly increase the vibration and noise emissions over the total working period.

To estimate vibration and noise emissions accurately, the times when the tool is switched off or when it is running but not actually being used should also be taken into account. This may significantly reduce vibration and noise emissions over the total working period.

Implement additional safety measures to protect the operator from the effects of vibration, such as servicing the power tool and accessories, keeping their hands warm, and organising workflows correctly.

Pull the plug out of the socket before carrying out any work on the power tool.

Select a sanding sheet with a grit suitable for how much material you want to remove. Bosch sanding sheets are suitable for paint, wood and metal.

To remove the sanding sheet (6), lift it from the side and pull it from the sanding pad (4).

Remove dirt and dust from the sanding pad (4), e.g. with a paintbrush, before attaching a new sanding sheet.

The surface of the sanding pad (4) is fitted with a hook-and-loop fastening, allowing sanding sheets with a hook-and-loop backing to be secured quickly and easily.

Press the sanding sheet (6) firmly onto the underside of the sanding pad (4).

To ensure optimum dust extraction, make sure that the punched holes in the sanding sheet (6) are aligned with the drilled holes in the sanding pad (4).

You can use the alignment aid (7) to precisely align the sanding sheet (6) on the sanding pad (4). Place the sanding sheet onto the alignment aid with the hook-and-loop fastening facing upwards. Press the cams of the alignment aid into the two holes in the sanding pad and unroll the sanding sheet from the alignment aid. Firmly press the sanding sheet into place.

The power tool can be fitted with sanding pads of various hardnesses, depending on the application:

Medium sanding pad (black): Suitable for all sanding work, universal application.

Soft sanding pad (grey, accessory): Suitable for intermediate and fine sanding even on curved surfaces.

Replace damaged sanding pads (4) immediately.

Remove the sanding sheet or polishing tool. Unscrew the four screws completely (8) and remove the sanding pad (4).

Clean the top of the new sanding pad (4). Lubricate the outer ring (shaded in grey in the figure) with a thin layer of synthetic grease.

Attach the new sanding pad (4) and retighten the four screws.

The dust from materials such as lead paint, some types of wood, minerals and metal can be harmful to human health. Touching or breathing in this dust can trigger allergic reactions and/or cause respiratory illnesses in the user or in people in the near vicinity.

Certain dusts, such as oak or beech dust, are classified as carcinogenic, especially in conjunction with wood treatment additives (chromate, wood preservative). Materials containing asbestos may only be machined by specialists.

Use a dust extraction system that is suitable for the material wherever possible.

Provide good ventilation at the workplace.

It is advisable to wear a P2 filter class breathing mask.

The regulations on the material being machined that apply in the country of use must be observed.

Avoid dust accumulation at the workplace. Dust can easily ignite.

Place the dust box (3) onto the extraction outlet (10) until it clicks into place.

You can easily check the filling level of the dust box (3) through the transparent container.

To empty the dust box (3), rotate and pull it downwards.

Before opening the dust box (3), knock the dust box against a firm surface as shown in the figure to loosen the dust from the filter element.

Holding the dust box (3) firmly, flap the filter element (11) upwards out of the way and empty the dust box. Use a soft brush to clean the flaps of the filter element (11).

In order to ensure optimum dust extraction, empty the dust box (3) in good time and clean the filter element (11) regularly.

When working on vertical surfaces, hold the power tool with the dust box (3) facing downwards.

Insert the dust extraction adapter (13) (accessory) into an extraction hose (12) (accessory) until you hear it click into place. Connect the dust extraction adapter (13) to the extraction outlet (10) on the power tool and the extraction hose (12) to a vacuum cleaner (accessory).

The dust extractor must be suitable for the material being worked.

When extracting dry dust that is especially detrimental to health or carcinogenic, use a special dust extractor.

When working on vertical surfaces, hold the power tool with the dust extraction hose facing downwards.

Pay attention to the mains voltage. The voltage of the power source must match the voltage specified on the rating plate of the power tool.

Make sure that you are able to press the On/Off switch without releasing the handle.

To switch on the power tool, slide the on/off switch (2) forward so that “1” appears on the switch.

To switch off the power tool, slide the on/off switch (2) backward so that “0” appears on the switch.

You can even preselect the orbital stroke rate during operation using the necessary orbital stroke rate preselection thumbwheel (1).

1-2: Low orbital stroke rate

3-4: Medium orbital stroke rate

5-6: High orbital stroke rate

The required orbital stroke rate is dependent on the material and the work conditions and can be determined using practical tests.

After working at a low orbital stoke rate for an extended period, you should operate the power tool at the maximum orbital stroke rate for approximately three minutes without load to cool it down.

Pull the plug out of the socket before carrying out any work on the power tool.

Always wait until the power tool has come to a complete stop before placing it down.

This power tool is not suitable for bench-mounted use. It must not be clamped into a vice or fastened to a workbench, for example.

Switch the power tool on, place the entire sanding surface against the surface of the workpiece and apply moderate pressure as you move the sander over the workpiece.

The material removal rate and sanding finish are primarily determined by the choice of sanding sheet, the preselected orbital stroke rate level and the contact pressure.

Only immaculate sanding sheets achieve good sanding performance and make the power tool last longer.

Be sure to apply consistent contact pressure in order to increase the lifetime of the sanding sheets.

Excessively increasing the contact pressure will not lead to increased sanding performance; rather, it will cause more severe wear of the power tool and premature failure of the sanding plate.

Do not use a sanding sheet for other materials after it has been used to work on metal.

Use only original Bosch-sanding accessories.

Attach a coarse grit sanding sheet.

Apply only light pressure to the power tool so that it runs at a higher orbital stroke rate and a higher material removal rate is achieved.

Attach a fine grit sanding sheet.

You can reduce the sanding plate orbital stroke rate by lightly varying the contact pressure or changing the orbital stroke rate level; the random orbit motion will be retained.

Move the power tool with moderate pressure flat on the workpiece in a circular motion or alternately along and across it. Do not tilt the power tool in order to avoid sanding through the workpiece, e.g. veneers.

Switch the power tool off after completing operation.

For polishing weathered lacquers and redressing scratches (e.g. acrylic glass), the power tool can be fitted with an appropriate polishing tool, e.g. lambswool bonnet, polishing felt or polishing sponge (accessory).

Select a low orbital stroke rate (level 1-2) when polishing in order to avoid heating up the surface excessively.

Apply the polish to an area slightly smaller than the area which you intend to polish. Using the appropriate polishing tool, work in the polish with either linear or circular movements and with moderate pressure.

Do not allow the polish to dry out on the surface; this may damage the surface. Do not expose the surface which you intend to polish to direct sunlight.

Clean the polishing tool regularly to ensure good polishing results. Wash the polishing tools with mild detergent and warm water; do not use thinning agents.

The figures in the table above are recommended values. The best method for determining the best combination while sanding or polishing is practical experimentation.

Pull the plug out of the socket before carrying out any work on the power tool.

To ensure safe and efficient operation, always keep the power tool and the ventilation slots clean.