GEX 12V-32 Professional - Sander BOSCH - Free user manual and instructions

USER MANUAL GEX 12V-32 Professional BOSCH

Three identical industrial robotic arms with labeled ports, shown from different angles (no text or symbols on the arms themselves)

en Original instructions

fr Notice originale

pt Manual original

es Manual original

The image is too blurry to recognize any text content.

3D rendered image of a handheld device with labeled parts (7), no readable text or symbols beyond annotations

(4) (3) (5) (6) (8) (1) 2.5 (2)

3D rendering of a mechanical device with labeled parts (7), no readable text or symbols beyond annotations

GEX 12V-77

6

A (9) (2) GSS 12V-32 GEX 12V-32

B (9) (2) GEX 12V-77

C (2) ② ① GSS 12V-32 GEX 12V-32

D (2) ② ① GSS 12V-32 GEX 12V-32

E

(10) (2)

GEX 12V-77

F

(10) (11) ③ ② ① (2)

GEX 12V-77

English

Safety Instructions

General Power Tool Safety Warnings

WARNING Read all safety warnings, instructions, illustrations and specifica-

tions provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

Work area safety

▶ Keep 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.

Electrical safety

▶ 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.

Personal safety

▶ 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 inatten-

tion 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.

Power tool use and care

▶ 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.

Battery tool use and care

▶ Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
▶ Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
When battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
▶ Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
▶ Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
▶ Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130°C may cause explosion.
▶ Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

Service

▶ Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.

▶ Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

Safety Warnings for Sander

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

▶ Always wait until the power tool has come to a complete stop before placing it down. The application tool can jam and cause you to lose control of the power tool.
In case of damage and improper use of the battery, vapours may be emitted. The battery can set alight or explode. Ensure the area is well ventilated and seek medical attention should you experience any adverse effects. The vapours may irritate the respiratory system.
▶ Do not modify or open the battery. There is a risk of short-circuiting.
The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally. An internal short circuit may occur, causing the battery to burn, smoke, explode or overheat.
▶ Only use the battery in the manufacturer's products. This is the only way in which you can protect the battery against dangerous overload.

Protect the battery against heat, e.g. against continuous intense sunlight, fire, dirt, water and moisture. There is a risk of explosion and short-circuiting.

Product Description and Specifications

Read all the safety and general instructions. Failure to observe the safety and general instructions may result in electric shock, fire and/or serious injury.

Please observe the illustrations at the beginning of this operating manual.

Intended Use

The power tool is intended for sanding of coated surfaces, plastic, filler and wood, as well as for use with dry and wet sanding materials.

Product Features

The numbering of the product features refers to the diagram of the power tool on the graphics page.

(1) On/off switch
(2) Sanding pad
(3) Buttons for speed preselection
(4) LED indicator for speed preselection (white) and state of charge of battery (green)
(5) Rechargeable battery ^a)
(6) Battery release button ^a)
(7) Handle (insulated gripping surface)
(8) On/off switch locking mechanism (GEX 12V-77)

(9) Sanding sheet

(10) Open-ended spanner

(11) Spanner flat

a) This accessory is not part of the standard scope of delivery.

10 | English

Technical Data

Orbital sander GSS 12V-32
Random orbit sander GEX 12V-32 GEX 12V-77
Article number		3 601 JL1 0.. 3 601 JL2 0.. 3 601 JL2 1..
Rated voltage V 12 12 12	=
Speed preselection ● ● ●
No-load speed n_o^A)	min^-1	3000-8000 3000-8000 3000-8000
No-load orbital stroke rate ^A)	min^-1	6000-16000 6000-16000 6000-16000
Orbit diameter mm 3 5 2.5
Sanding pad diameter mm 32 32 77
Weight ^B)	kg 0.62-0.82 0.62-0.82 0.71-0.91
Recommended ambient temperature during charging	°C	0 to +35	0 to +35
Permitted ambient temperature during operation ^C) and during storage	°C	-15 to +50	-15 to +50
Recommended rechargeable batteries		GBA 12V...	GBA 12V...
Recommended battery chargers		GAL 12...	GAL 12...
		GAX 18...	GAX 18...

A) Measured at 20–25 °C with rechargeable battery GBA 12V 3.0Ah
B) Depending on battery in use
C) Limited performance at temperatures < 0 °C
Values can vary depending on the product, scope of application and environmental conditions. To find out more, visit www.bosch-professional.com/wac.

Speed Preselection

You can preselect the required speed using the two buttons for speed preselection (3), even during operation. The required speed depends on the material and the working conditions; it can be ascertained through practical tests.

LEDs	[min ^-1 ]
1 x continuous white light	3000

LEDs	[min-1]
2 x continuous white light	4250
3 x continuous white light	5500
4 x continuous white light	6750
5 x continuous white light	8000

After working at a low speed for an extended period, you should operate the power tool at the maximum speed for approximately 3 minutes without load to cool it down.

Noise/Vibration Information

		GSS 12V-32	GEX 12V-32	GEX 12V-77
Noise emission values determined according to EN 62841-2-4.
Typically, the A-weighted noise level of the power tool is
Sound pressure level	dB(A)	60	59	56
Sound power level	dB(A)	68	67	64
Uncertainty K	dB	3	3	3
Wear hearing protection!

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

To mirror the normal working conditions of the power tool, the operating conditions deviate from the standard method as follows:

a_h (measured with clamping force of 10 N)	m/s2	2.7	2.5	1.6
a_h (measured with clamping force of 15 N)	m/s2	3.9	3.7	2.8
K		1.5	1.5	1.5

GSS 12V-32 GEX 12V-32 GEX 12V-77

Measured with grain size

2500 2500 3000

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.

Rechargeable battery

Bosch sells some cordless power tools without a rechargeable battery. You can tell whether a rechargeable battery is included with the power tool by looking at the packaging.

Charging the battery

▶ Use only the chargers listed in the technical data. Only these chargers are matched to the lithium-ion battery of your power tool.

Note: Lithium-ion rechargeable batteries are supplied partially charged according to international transport regulations. To ensure full rechargeable battery capacity, fully charge the rechargeable battery before using your tool for the first time.

Inserting the Battery

Push the charged battery into the battery holder until it clicks into place.

Removing the Battery

To remove the rechargeable battery, press the battery release buttons and pull the battery out. Do not use force to do this.

Battery charge indicator

The 5 LEDs of the LED display will indicate the state of charge of the battery. The LED indicator lights up for 5 seconds after start-up.

LED Capacity

5 × continuous green light 80–100 %

4 × continuous green light 60–80 %

3 × continuous green light 40–60 %

2 × continuous green light 20–40 %

1 × continuous yellow light 1–20 %

1 × continuous red light 0–1 %

Temperature-dependent overload protection

In normal conditions of use, the power tool cannot be overloaded. If the power tool is overloaded or not kept within the permitted battery temperature range, the speed is reduced or the power tool switches off. At reduced speed, the power tool will run again at full speed once the permitted battery temperature is reached or the load is reduced. If it automatically shuts down, switch the power tool off, allow the battery to cool down, then switch the power tool back on.

Recommendations for Optimal Handling of the Battery

Protect the battery against moisture and water.

Only store the battery within a temperature range of -20 to 50°C. Do not leave the battery in your car in the summer, for example.

A significantly reduced operating time after charging indicates that the battery has deteriorated and must be replaced. Follow the instructions on correct disposal.

Assembly

Before carrying out any work on the power tool (e.g. maintenance, tool change etc.), remove the battery from the power tool. There is risk of injury from unintentionally pressing the on/off switch.

Changing the Sanding Sheet (see figures A–B)

To remove the sanding sheet (9), lift it from the side and pull it from the sanding pad (2).

Remove dirt and dust from the sanding pad (2), e.g. with a paintbrush, before attaching a new sanding sheet.

The surface of the sanding pad (2) is fitted with a hook-and-loop fastening, allowing sanding sheets with a hook-and-loop backing to be secured quickly and easily.

A sanding pad with a smooth surface can also be attached in order to use adhesive sanding paper.

Press the sanding sheet (9) firmly onto the underside of the sanding pad (2).

12 | English

Selection of the Sanding Plate

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

• Soft sanding disc: Suitable for sensitive sanding even on curved surfaces
  – Medium-hard sanding disc: Suitable for all sanding work, universal application
• Hard sanding disc: Suitable for heavy sanding on flat surfaces

GSS 12V-32, GEX 12V-32: Changing the Sanding Pad (see figures C-D)

Before carrying out any work on the power tool (e.g. maintenance, tool change etc.), remove the battery from the power tool. There is risk of injury from unintentionally pressing the on/off switch.

Note: Replace damaged sanding pads (2) immediately.

Pull off the sanding sheet.

Disassembly: Turn the sanding pad (2) counterclockwise to remove it (see figure C).

Clean all the parts to be fitted.

Assembly: Tighten the new sanding pad (2) clockwise (see figure D).

Note: When attaching the sanding pad, make sure that the teeth of the catch mate with the recesses in the sanding pad.

GEX 12V-77: Changing the Sanding Pad (see figures E-F)

Before carrying out any work on the power tool (e.g. maintenance, tool change etc.), remove the battery from the power tool. There is risk of injury from unintentionally pressing the on/off switch.

Note: Replace damaged sanding pads (2) immediately. Pull off the sanding sheet.

Disassembly: Hold the spanner flat (11) on the power tool with the open-ended spanner (10) and turn the sanding pad (2) counterclockwise to remove it (see figure E).

Clean all the parts to be fitted.

Assembly: Hold the spanner flat (11) on the power tool in place with an open-ended spanner (10). Tighten the new sanding pad (2) clockwise (see figure F).

Note: When attaching the sanding pad, make sure that the teeth of the catch mate with the recesses in the sanding pad.

Dust

The dust from materials such as lead paint, certain types of wood and minerals 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.

- 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.

Operation

Starting Operation

Switching on/off

To start the power tool, press the on/off switch (1).

GEX 12V-77: Press the locking mechanism (8) to lock the pressed on/off switch (1) in this position.

To switch off the power tool, release the on/off switch (1); or, if the switch is locked (as with GEX 12V-77), briefly press the on/off switch (1) and then release it.

LED Displays

The following table explains the possible LED displays (4).

Colour State Meaning/cause Solution

White Continuous light(1 x to 5 x)	Speed preselection (see "Speed Preselection", page 10)
Green Continuous light(2 x to 5 x)	Battery charged (see "Battery charge indicator", page 11)
Yellow Continuous light(1 x)	Battery almost empty (see "Battery charge indicator", page 11)	Replace or charge battery soon
Flashing light(5 x)	Critical temperature has been reached(motor, electronics, battery)	Run the power tool at no load and allow it to cool down
Red Continuous light(1 x)	Battery empty (see "Battery charge indicator", page 11)	Replace or charge battery
Flashing light(5 x)	Power tool is overheated and will switch off	Leave the power tool to cool down and switch it on again

Colour State Meaning/cause Solution
Power tool is jammed and will switch off Rectify the blockage and switch the power tool on again

The spindle lock is activated and the power tool will switch off

Deactivate the spindle lock and switch the power tool on again

Working Advice

▶ Before carrying out any work on the power tool (e.g. maintenance, tool change etc.), remove the battery from the power tool. There is risk of injury from unintentionally pressing the on/off switch.
▶ 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.

Select the speed with which you intend to sand the workpiece.

Sanding Surfaces

Place the power tool with the entire sanding surface against the surface of the workpiece, then turn it on and apply moderate pressure as you move the sander over the workpiece. Observe the notes of the sanding material (dry or wet sanding).

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.

Rough Sanding

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.

Fine Sanding

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. Applying moderate pressure, move the power tool over the surface of the workpiece, either in a circular motion or alternating between crossways and lengthways. To avoid sanding through the workpiece, e.g. lacquers, do not tilt the power tool.

Switch the power tool off after completing operation.

Maintenance and Service

Maintenance and Cleaning

Before carrying out any work on the power tool (e.g. maintenance, tool change etc.), remove the battery from the power tool. There is risk of injury from unintentionally pressing the on/off switch.
▶ To ensure safe and efficient operation, always keep the power tool and the ventilation slots clean.

After-Sales Service and Application Service

Malaysia

Tel.: [phone]

You can find our service addresses and links to the repair service and spare parts ordering at www.bosch-pt.com/serviceaddresses

In all correspondence and spare parts orders, please always include the 10-digit article number given on the nameplate of the product.

Disposal

Power tools, rechargeable batteries, accessories and packaging should be sorted for environmental-friendly recycling.

Do not dispose of power tools and batteries/re-chargeable batteries into household waste!

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1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

• Warranty Disclaimer

This product contains Open Source Software components which underly Open Source Software Licenses. Please note that Open Source Licenses contain disclaimer clauses. The text of the Open Source Licenses that apply are included in this manual under "Legal Information and Licenses".

Components under SLA

Name: STM32-CLASSB-SPL

Version: v2.2.0 License: STMicro Liberty License v2

Copyright notices: Copyright (c) 2017 STMicroelectronics. License Text: available in

http://www.st.com/software_license_agreement_liberty_v2