BOSCH GDS 250-LI Cordless Impact Wrench Instruction Manual

GDS 250-LI Cordless Impact Wrench
Instruction Manual

GDS 250-LI Cordless Impact Wrench

Safety instructions

General Power Tool Safety Warnings

WARNING

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 mainsoperated (corded) power tool or battery-operated (cordless) power tool.

Work area safety

• Kee 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 elec- tric 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 in- juries.
• 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 in- jury 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 de- signed.
• 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 ac- cessories, 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 Impact Wrenches

• Hold the power tool by insulated gripping surfaces, when performing an operation where the fastener may contact hidden wiring. Fasteners contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
• Use suitable detectors to determine if there are hid- den 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.
• Hold the power tool securely. When tightening and loosening screws be prepared for temporarily high torque reactions.
• 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 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 with products from the manufacturer. 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 machine is intended for driving in and loosening screws and bolts as well as for tightening and loosening nuts within the respective range of dimension.

Product features

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

1. Tool holder
2. Carrying strap
3. Battery A)
4. Battery release button A)
5. “Automatic shutdown (ABR)” button
6. “PowerLight” lamp
7. “Automatic shutdown (ABR)” LED
8. Rotational direction switch
9. On/off switch
10. Handle (insulated gripping surface)
11. Application tool (e.g. impact socket)

A) Accessories shown or described are not included with the product as standard. You can find the complete selection of accessories in our accessories range.

Technical Data

+50
Recommended rechargeable batteries| | GBA 18V… ProCORE18V…
Recommended chargers| | GAL 18…
GAX 18…
GAL 36…

A) Measured at 20−25°C with rechargeable battery GBA 18V 3.0Ah.

B) Depends on battery in use

C) Limited performance at temperatures <0°C

Noise/vibration information

Noise emission values determined according to EN62841-2-2.

Typically, the A-weighted noise level of the power tool is:

Sound pressure level 102dB(A); sound power level 113dB(A).
Uncertainty K=3dB.

Wear hearing protection!

Vibration total values ah

(triax vector sum) and uncertainty K

determined according to EN 62841-2-2:

Tightening screws and nuts of the maximum permitted size: ah <14.5 m/s 2 , K = 1.5 m/s 2

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 com- pare 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 application tools 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 application tools, keeping their hands warm, and organising workflows correctly.

Assembly

• Remove the battery from the power tool before carrying out work on the power tool (e.g. maintenance, changing tool, etc.). The battery should also be re- moved for transport and storage. There is risk of injury from unintentionally pressing the on/off switch.

Battery charging

Note: The battery is supplied partially charged. To ensure full battery capacity, fully charge the battery in the charger before using your power tool for the first time.

The lithium-ion battery can be charged at any time without reducing its service life. Interrupting the charging process does not damage the battery.

The lithium-ion battery is protected against deep discharge by the “Electronic Cell Protection (ECP)”. When the battery is discharged, the power tool is switched off by means of a protective circuit: The application tool no longer rotates.

• Do not continue to press the On/Off switch after the power tool has automatically switched off. The battery can be damaged.

Removing the Battery

The battery (3) is equipped with two locking levels to prevent the battery from falling out when pushing the battery release button (4) unintentionally. As long as the battery is inserted in the power tool, it is held in position by means of a spring.

To remove the battery (3), press the release button (4) and pull the battery out of the power tool. Do not use force to do this.

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.

Battery model GBA 18V…

LEDs ……………………………………………..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..

Changing the tool (see figure A)

• Remove the battery from the power tool before carrying out work on the power tool (e.g. maintenance, changing tool, etc.). The battery should also be re- moved for transport and storage. There is risk of injury from unintentionally pressing the on/off switch.
• When working with an application tool, pay attention that the application tool is connected securely to the tool holder. When the application tool is not securely connected with the tool holder, it can come off during ap- plication.

Slide the application tool (11) onto the square drive of the tool holder (1).

Due to the way the system operates, the application tool (11) will move around slightly in the tool holder (1); this has no influence on the function/safety.

Operation

Method of Operation

The tool holder (1) (with the application tool) is driven by an electric motor via a gear and impact mechanism.

The working procedure is divided into two phases:

Screwing in and tightening (impact mechanism in action).

The impact mechanism is activated as soon as the screwed connection runs tight and load is therefore put on the motor. The impact mechanism then converts the power of the motor to steady rotary impacts. When loosening screws or nuts, the process is reversed.

Automatic shutdown ABR (ABR = Auto Bolt Release) (see figure C)

The ABR function automatically shuts down the power tool when the bolt nut is released. The automatic shutdown prevents the bolt nut from falling down when released. You can use the “Automatic shutdown (ABR)” button (5) to activate and deactivate ABR. The LED for “Automatic shutdown (ABR)” (7) lights up when ABR is activated. The previous setting is retained when the battery is changed.

Starting Operation

Inserting the battery

Set the rotational direction switch (8) to the centre position to protect the power tool from being switched on accidentally.

Push the charged battery (3) into the base of the power tool until the battery is securely locked.

Set the rotational direction (see figureB)

The rotational direction switch (8) is used to change the rotational direction of the power tool. However, this is not possible while the on/off switch (9) is being pressed.

Right rotation: To drive in screws and tighten nuts, press the rotational direction switch (8) through to the left stop. Left Rotation: To loosen and unscrew screws and nuts, press the rotational direction switch (8) through to the right stop.

Switching on/off

To start the power tool, press and hold the on/off switch (9).

The lamp (6) lights up when the on/off switch (9) is lightly o  fully pressed, meaning that the work area is illuminated in poor lighting conditions.

To switch off the power tool, release the on/off switch (9).
Adjusting the Speed

You can adjust the speed of the power tool when it is on by pressing in the on/off switch (9) to varying extents.

A light pressure on the on/off switch (9) results in a low rotational speed. Increased pressure on the switch causes an increase in speed.

Practical advice

Only apply the power tool to the screw/nut when the tool is switched off. Rotating tool inserts can slip off.

The torque depends on the impact duration. The maximum achieved torque results from the sum of all individual torques achieved through impact. Maximum torque is achieved after an impact duration of 6–10 seconds.After this duration, the tightening torque increases only minimally. The impact duration is to be determined for each required tightening torque. The tightening torque actually achieved should always be checked with a torque wrench.

Screw applications with hard, spring-loaded or soft seats When the achieved torques in an impact series are measured during a test and transferred onto a diagram, the result is the curve of a torque characteristic. The height of the curve corresponds to the  maximum achievable torque, and the steepness indicates the duration in which this is achieved.

A torque characteristic depends on the following factors:

– Strength properties of the screws/nuts

– Type of backing (washer, disc spring, seal)

– Strength properties of the material being screwed/bolted together

– Lubrication conditions at the screw/bolt connection

Consequently, the following applies in each case:

– A hard seat is used for metal-to-metal screw applications that use washers. After a relatively short impact duration, the maximum torque is achieved (steep characteristic curve). An unnecessarily long impact duration only causes damage to the machine.

– A spring-loaded seat is used for metal-to-metal screw applications that use spring washers, disc springs, studs or screws/nuts with conical seats. It is also called a spring-loaded seat when extensions are used.

– A soft seat is used for screw applications of e.g. metal on wood or screw applications that use lead washers or fibre washers as backing.

For a spring-loaded seat, as well as for a soft seat, the maximum tightening torque is lower than for a hard seat. A much longer impact duration is also required.

Guide values for maximum screw tightening torques

Figures given in Nm; calculated from the tensional cross-section; utilisation of the yield point: 90% (with friction coefficient µ total = 0.12). As a control measure, always check the tightening torque with a torque wrench.

Property classes accord- ing to DIN 267| **Standard screws/bolts

| High-strength bolts
---|---|---
3.6| 4.6| ** 5.6| 5.8| 6.8| 8.8| 10.9| 12.9
M6| 2.71| 3.61| 4.52| 6.02| 7.22| 9.7| 13.6| 16.2
M8| 6.57| 8.7| 11| 14.6| 17.5| 23| 33| 39
M10| 13| 17.5| 22| 29| 35| 47| 65| 78
M12| 22.6| 30| 37.6| 50| 60| 80| 113| 135
M14| 36| 48| 60| 79| 95| 130| 180| 215
M16| 55| 73| 92| 122| 147| 196| 275| 330
M18| 81| 110| 135| 180| 215| 290| 405| 485
M20| 115| 155| 190| 255| 305| 410| 580| 690

Tips

Before screwing larger, longer screws into hard materials, it is advisable to pre-drill a pilot hole with the core diameter of the thread to approx. 2/3 of the screw length. Note: Ensure that no metal particles enter the power tool. After working at a low speed for an extended period, you should operate the power tool at the maximum speed for ap- proximately three minutes without load to cool it down. 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.

Maintenance and Service

Maintenance and Cleaning

• 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.

• Remove the battery from the power tool before carrying out work on the power tool (e.g. maintenance, changing tool, etc.). The battery should also be removed for transport and storage. 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

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.

Great Britain

Robert Bosch Ltd. (B.S.C.)

P.O. Box 98

Broadwater Park

North Orbital Road

Denham Uxbridge

UB 9 5HJ

At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.

Tel. Service: (0344) 7360109

E-Mail: boschservicecentre@bosch.com

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

Transpor
The contained lithium-ion batteries are subject to the Dangerous Goods Legislation requirements. The batteries are suitable for road-transport by the user without further restrictions.

When shipping by third parties (e.g.: by air transport or forwarding agency), special requirements on packaging and labelling must be observed. For preparation of the item being shipped, consulting an expert for hazardous material is required.

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

Disposal

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

Do not dispose of power tools and batteries/rechargeable batteries into household waste!

Only for EU countries:

According to the Directive 2012/19/EU, power tools that are no longer usable, and according to the Directive 2006/66/EC, defective or used battery packs/batteries, must be collected separately and disposed of in an environmentally correct manner.

Battery packs/batteries:
Li-ion:

Please observe the notes in the section on transport (see

“Transport”, page 16)

EU Declaration of Conformity

Cordless Impact Wrench……………………. Article number

We declare under our sole responsibility that the stated products comply with all applicable provisions of the directives and regulations listed below and are in conformity with the following standards.
Technical file at: *

Technical file at: *

GDS 250-LI| 3 601 JG6 1..|

2006/42/EC

2014/30/EU

2011/65/EU

|

EN 62841-1:2015

EN 62841-2-2:2014

EN 55014-1:2017+A11:2020

EN 55014-2:2015

EN IEC 63000:2018

---|---|---|---
| * Robert Bosch Power Tools GmbH
(PT/ECS)
70538 Stuttgart
GERMANY
Henk Becker
Executive Vice President
Engineering and Manufacturing
| Helmut Heinzelmann
Head of Product Certification

Robert Bosch Power Tools GmbH, 70538 Stuttgart, GERMANY Stuttgart, 09.11.2018

**Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
www.bosch-pt.com

**

References

• Invented for life | Bosch Global
• Početna strana | Bosch u Srbiji
• Skånevik Ølen Kraftlag AS
• Электроинструменты Bosch | Bosch Professional
• Location selection | Bosch Power Tools
• Електроинструменти на Bosch | Електроинструменти на Bosch
• Service worldwide
• Elektrické nářadí Bosch | Elektrické nářadí Bosch
• Bosch Elektrowerkzeuge und Zubehör | Bosch Elektrowerkzeuge
• Bosch el-værktøj | Bosch el-værktøj
• Bosch-sähkötyökalut | Bosch-sähkötyökalut
• Ηλεκτρικά εργαλεία Bosch | Ηλεκτρικά εργαλεία Bosch
• Bosch elektromos kéziszerszámok | Bosch elektromos kéziszerszámok
• Elektronarzędzia Bosch | Elektronarzędzia Bosch
• Scule electrice Bosch | Scule electrice Bosch
• Bosch električni alati | Bosch električni alati
• bosch-pt.ru
• Elektrické náradie Bosch | Elektrické náradie Bosch
• Invented for life | Bosch Global
• Ana Sayfa | Bosch Türkiye
• Početna | Bosch u Hrvatskoj
• Domov | Bosch v Sloveniji
• herramientasbosch.net

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