Bosch GSH 18V-5 Professional Manual

Safety instructions

General Power Tool Safety Warnings

Read all safety warnings, instructions, illustrations and specifications 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 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.

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.

Hammer Safety Warnings

Safety instructions for all operations

• Wear ear protectors. Exposure to noise can cause hearing loss.
• Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
• Hold the power tool by insulated gripping surfaces, when performing an operation where the cutting accessory may contact hidden wiring. Cutting accessory contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.

Additional Safety Instructions

• Use suitable detectors to determine if there are hidden supply lines or contact the local utility company for assistance. Contact with electric cables can cause fire and electric shock. Damaging gas lines can lead to explosion. Breaking water pipes causes property damage.
• 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.
• Secure the workpiece. A workpiece clamped with clamping devices or in a vice is held more secure than by hand.
• Do not touch any application tools or adjacent housing components shortly after operation. These can become very hot during operation and cause burns.
• Take care when carrying out demolition work using the chisel. Falling fragments of the demolition material could injure you or any bystanders.
• 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 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.
• Hold the power tool firmly with both hands and make sure you have a stable footing. The power tool can be more securely guided with both hands.

Symbols

The following symbols may be important for the operation of your power tool. Please take note of these symbols and their meaning. Correctly interpreting the symbols will help you to operate the power tool more effectively and safely.

Symbols and their meaning

To change the application tool, pull back the locking sleeve.

To change the chiselling position, push the chisel adjustment ring forwards and turn it.

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 chiselling work in concrete, brick, stone and asphalt, as well as for driving in and compressing with the appropriate accessories.

Product Features

1. Dust protection cap
2. Locking sleeve
3. Chisel adjustment ring (Vario Lock)
4. Vibration damping
5. Lock button for on/off switch
6. Handle (insulated gripping surface)
7. On/off switch
8. Rechargeable battery^a)
9. Auxiliary handle (insulated gripping surface)
10. Worklight
11. Rechargeable battery release button^a)
12. User interface
13. Power tool status indicator (user interface)
14. Temperature indicator (user interface)
15. Indicator for 100% working mode (user interface)
16. Button to select the working mode (user interface)
17. Indicator for 70% working mode (user interface)
18. Rechargeable battery charge indicator (user interface)
19. Knurled nut for auxiliary handle

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

Technical Data

Cordless demolition hammer		GSH 18V-5
Article number		3 611 J18 2..
Rated voltage	V=	18
Impact rateA)	min-1	3050
Tool holder		SDS max
WeightB)	kg	5.6−6.6
Recommended ambient temperature during charging	°C	0...+35
Permitted ambient temperature during operationC) and during storage	°C	–20...+50
Compatible rechargeable batteries		GBA 18V... ProCORE18V...
Recommended re-chargeable batteries for maximum performance		ProCORE18V... ≥5.5 Ah
Recommended battery chargers		GAL 18... GAX 18... GAL 36...

^A) Measured at 20–25°C with rechargeable battery ProCORE18V 12.0Ah
^B) Depends 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.

Noise/Vibration Information

Noise emission values determined according to EN IEC 62841-2-6.

Typically, the A-weighted noise level of the power tool is: Sound pressure level 89 dB(A); sound power level 97 dB(A). Uncertainty K=3 dB.

Wear hearing protection
Vibration total values a_h (triax vector sum) and uncertainty K determined according to EN IEC 62841-2-6:
Chiselling: a_h = 13.8 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.

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 button and pull the battery out. Do not use force to do this.

The rechargeable battery has two locking levels to prevent the battery from falling out if the battery release button is pressed unintentionally. The rechargeable battery is held in place by a spring when fitted in the power tool.

Battery charge indicator

Note: Not all battery types have a battery charge indicator.

The green LEDs on the battery charge indicator indicate the state of charge of the battery. For safety reasons, it is only possible to check the state of charge when the power tool is not in operation.

Press the button for the battery charge indicator or to show the state of charge. This is also possible when the battery is removed.

If no LED lights up after pressing the button for the battery charge indicator, then the battery is defective and must be replaced.

The state of charge of the battery is also displayed on the user interface (see "User Interface").

Battery model GBA 18V...

LED	Capacity
3× continuous green light	60–100%
2× continuous green light	30–60%
1× continuous green light	5–30%
1× flashing green light	0–5%

Battery model ProCORE18V...

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 green light	5–20%
1 × flashing green light	0–5%

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.

Occasionally clean the ventilation slots on the battery using a soft brush that is clean and dry.

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.

Auxiliary handle

(see figure A)

• Do not operate your power tool without the auxiliary handle (9).

You can swivel and/or move the auxiliary handle (9) to any angle for a safe work posture that minimises fatigue.

• Loosen the knurled nut (19), rotate and/or move the auxiliary handle (9) around the axis of the tool to the required position and retighten the knurled nut (19).

Changing the Tool

With the SDS max tool holder, you can change the application tool simply and easily without additional aids.

The dust protection cap (1) largely prevents the penetration of dust into the tool holder during operation. When inserting the tool, make sure that the dust protection cap (1) does not become damaged.

• Replace a damaged dust protection cap immediately. It is recommended that you have use an after-sales service for this.

Inserting the application tool

(see figure B)

• Clean and lightly grease the shank of the application tool.
• Push the locking sleeve(2) back and insert the application tool by turning it into the tool holder. Release the locking sleeve (2) to lock the application tool.
• Check the latching by pulling the tool.

Removing the application tool

(see figure C)

• Push the locking sleeve (2) back and remove the application tool.

Operation

• 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.

Starting Operation

Switching On and Off

• To start the power tool, press and hold the on/off switch (7).
• Press the lock button(5) to lock the on/off switch (7) in this position.
• To switch off the power tool, release the on/off switch (7); or, if the switch is locked with the lock button (5), briefly press the on/off switch (7) and then release it.

At low temperatures, the power tool will take a certain amount of time to reach its full impact performance.

Lock-off function

• The power tool is equipped with a lock-off function to prevent an unintended start-up.

Activating the lock-off function:

• Press the lock button (5) whilst the power tool is switched off.
  This locks the on/off switch (7) so that the power tool is secured against being switched on unintentionally.

Deactivating the lock-off function:

• Press the locked lock button (5).

This unlocks the on/off switch (7) so that the power tool can be started up.

Worklight
The worklight (10) lights up when the on/off switch (7) is lightly or fully pressed, allowing the work area to be illuminated in poor lighting conditions.

Setting the impact rate
You can adjust the impact rate of the power tool when it is on by pressing in the on/off switch (7) to varying extents.
Slight pressure on the on/off switch (7) results in a low impact rate. Increased pressure on the switch causes an increase in impact rate.

Changing the chiselling position (Vario-Lock)

(see figure D)

You can lock the chisel in 12 different positions, allowing you to select the optimum working position for each task.

• Insert the chisel into the tool holder.
• Push the chisel adjustment ring (3) forwards and turn the chisel to the required position with the chisel adjustment ring (3).
• Release the chisel adjustment ring (3) and turn the chisel until it audibly clicks into place.

User Interface

The user interface (12) is used to select the working mode and to indicate the status of the power tool.

Status indications

Power tool status indicator (13)	Meaning	Solution
–	Power tool switched off	–
Green	Power tool switched on and ready to use	–
Yellow	Critical temperature has been reached or rechargeable battery is almost empty	Run the power tool at no load and allow it to cool down, or replace or charge the battery soon
Red	Power tool has overheated or rechargeable battery is empty	Allow the power tool to cool down, or replace or charge the battery
	Battery is too weak	Charge the battery or use the recommended battery type
	General error	Switch the power tool off and on again, or remove the battery and reinsert it If the error persists: Send the power tool to the after-sales service
Battery charge indicator (user interface) (18)	Meaning/cause	Solution
Green (2 to 5 bars)	Battery charged	–
Yellow (1 bar)	Battery almost empty	Replace or charge battery soon
Red (1 bar)	Battery empty	Replace or charge battery
Temperature indicator (14)	Meaning/cause	Solution
Yellow	Operating temperature of the battery or the power tool has significantly increased, performance is reduced	Leave the power tool to cool down or replace overheated battery
Red	Operating temperature of the battery or the power tool has been exceeded, power tool switches itself off as a precautionary measure	Leave the power tool to cool down or replace overheated battery

Selecting the working mode

Press the (16) button for selecting the working mode repeatedly until the working mode you require lights up.

	Functions
Indicator for 100% working mode (15)	100 % working mode (Adaptive Speed Control soft start): Controlled start up to maximum power; shorter battery runtime
Indicator for 70% working mode (17)	70 % Working mode (Adaptive Speed Control soft start): Controlled start up to reduced power for working on delicate materials; longer battery runtime

Working Advice

Sharpening Chisels
Only sharp chiselling tools will produce good results, therefore sharpen your chiselling tools in good time before use. This will ensure a long service life for the tools and good work results.

Re-sharpening
Grind chiselling tools against sanding discs, e.g. aluminium oxide, under a steady stream of water. Make sure that the cutting edges show no annealing colours; this will impair the hardness of the chiselling tools.

To forge a chisel, heat it to 850–1050°C (pale red to yellow).

To harden a chisel, heat it to approx. 900°C and quench in oil. Then, leave it in an oven for approx. one hour at 320°C (annealing colour: pale blue).

Adaptive Speed Control

For better control and precise positioning, the power tool starts at a low speed and then increases to the set speed.
Adaptive Speed Control is started automatically when the chisel is engaged with the work
area during the chiseling application.
When the tool is removed from the chiseling application, the speed is reduced after a time delay.

Vibration damping

The integrated vibration damping function reduces the generated vibration.

• Do not continue to use the power tool if the damping element is damaged.

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.
• Replace a damaged dust protection cap immediately. It is recommended that you have use an after-sales service for this.

Lubrication
The power tool is lubricated with grease and is ready for immediate use.
The lubricating grease should only be changed during maintenance or commissioning carried out by an after-sales service centre authorised to work with Bosch power tools. It is crucial that only lubricating grease provided by Bosch is used.

After-Sales Service and Application Service

Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. You can find explosion drawings and information on spare parts at: www.bosch-pt.com

The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.

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

You can find further service addresses at: www.bosch-pt.com/serviceaddresses

Transport

The recommended lithium-ion batteries are subject to legislation on the transport of dangerous goods. The user can transport the batteries by road without further requirements.

When the batteries are shipped by third parties (e.g. air transport or forwarding agency), special requirements on packaging and labelling (e.g. ADR regulations) must be met. A dangerous goods expert must be consulted when preparing the items for shipping.

Dispatch battery packs only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging. Please also observe the possibility of more detailed national regulations.

Bosch Power Tools

Documents / Resources

References

• http://www.bosch-professional.com/wac
• Home | Bosch Power Tools
• Service worldwide

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