BOSCH 1 609 92A 8ZX GRW 140 Professional Mechanism Instruction Manual

: June 1, 2024
: Bosch

Table of Contents

Safety instructions
Product Description and Specifications
Assembly
Operation
Maintenance and Service
CUSTOMER SUPPORT
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

BOSCH 1 609 92A 8ZX GRW 140 Professional Mechanism

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 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 energizing 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.

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.

Mixer safety instructions

Hold the tool with both hands at the intended handles.
Loss of control can cause personal injury.
Ensure sufficient ventilation when mixing flammable materials to avoid a hazardous atmosphere. Developing vapour may be inhaled or be ignited by the sparks the power tool produces.
Do not mix food. Power tools and their accessories are not designed for processing food.
Keep the cord away from the working area. The cord may be entangled by the mixer basket.
Ensure that the mixing container is placed in a firm and secure position. A container that is not properly secured may move unexpectedly.
Ensure that no liquid splashes against the housing of the power tool. Liquid that has penetrated the power tool can cause damage and lead to electric shock.
Follow the instructions and warnings for the material to be mixed. Material to be mixed may be harmful.
If the power tool falls into the material to be mixed, unplug the tool immediately and have the power tool checked by a qualified repair person. Reaching into the bucket with the tool still plugged in can lead to electric shock.
Do not reach into the mixing container with your hands or insert any other objects into it while mixing. Contact with the mixer basket may lead to serious personal injury.
Start up and run down the tool in the mixing container only. The mixer basket may bend or spin in an uncontrolled manner.
Do not use on explosive materials (e.g highly flammable solvents). Power tools produce sparks which can ignite fumes.
Follow the instructions and warnings in the safety data sheets (SDS) of the mixing material. The mixing material may be harmful.
Do not use the power tool when it is connected to a stand. Bench-mounted operation of the power tool is not permitted.

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 suitable for mixing construction materials in powder form, such as mortar, plaster, adhesives, and paints and varnishes which do not contain solvents, as well as similar substances.

Product features

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

On/off switch
Speed preselection thumbwheel
Gear selector switch
Drive spindle
Lock on button for on/off switch
Mixer basketa)
Handle (insulated gripping surface)
Open-ended spanner (2 x Ø 22 mm)
Indicator for changing the carbon brush

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

Mixer		GRW 140
Article number		3 601 AC4 0..
Rated power input	W	1400
Power output	W	500
Mechanical gear selection		●
Soft start		●
Speed preselection		●
Constant electronic contro		●
Restart protection		●

No-load speed
– First gear| min–1| 200–480
– Second gear| min–1| 300–750
Rated torque
– First gear| Nm| 10.2
– Second gear| Nm| 6.7
Tool holder| | M14
Maximum mixer basket dia| mm| 140
Weight according to EPTA-Procedure 01:2014| kg| 4.2
Protection class| |

The specifications apply to a rated voltage [U] of 230 V. These specifications may vary at different voltages and in country-specific models.
Values can vary depending upon the product and are subject to application and environmental conditions. For further information
www.bosch-professional.com/wac.

Noise/vibration information
Noise emission values determined according to EN 62841-2-10.
Typically, the A-weighted noise level of the power tool is:
Sound pressure level 96 dB(A); sound power level 104 dB(A). Uncertainty K = 3 dB.
Wear hearing protection!
Vibration total values ah (triax vector sum) and uncertainty K determined according to EN 62841-2-10: ah < 2.5 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.

Assembly

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

Changing the Tool

Mixer basket with M14 male thread

Screw the mixer basket (6) into the drive spindle (4). To do this, hold the drive spindle (4) with an open-ended spanner (width across flats 22 mm), and tighten the mixer basket (6) with a second open-ended spanner (width across flats 22 mm).
The mixer basket is disassembled in reverse order.
Changing the Tool

Operation

Starting Operation

Products that are only sold in AUS and NZ: Use a residual current device (RCD) with a nominal residual current of 30 mA or less.
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.
Dusts, e. g. mineral dusts, can be harmful to 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.
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.

Mechanical gear selection

Operate the gear selector switch only when the power tool is not in use.
Turn the gear selector switch (3) to the required gear (I or II).
You can preselect two speed ranges with the gear selector switch (3).

Gear I:
Low speed range

Gear II:
High speed range

Switching on/off
To start the power tool, press the on/off switch (1). To lock the on/off switch (1), press the lock on button (5) and release the on/off switch (1).
To switch off the power tool, press briefly on the on/off switch (1) and then release it.

Adjusting the Speed
The required speed can be preselected with the speed preselection thumbwheel (2) (even during operation).
The speed needed depends on the mixing material that is to be mixed and the work conditions.

Soft start
The electronic soft start slowly increases the speed if the on/ off switch (1) is pressed. This prevents the mixing material that is to be mixed from splashing.

Constant Electronic control
The constant electronic control keeps a constant speed when at no load and under certain load conditions. This guarantees a uniform performance.

Indicator for changing the carbon brush
The indicator for changing the carbon brush (9) blinks red when the carbon brushes are worn. The carbon brushes must be replaced. To do this, send the power tool to an authorised after-sales service centre for Bosch power tools (see “After-Sales Service and Application Service”, page 7).

Restart protection
The restart protection feature prevents the power tool from uncontrolled starting after the power supply to it has been interrupted.
To restart the tool, set the on/off switch (1) to the “off” position and then switch the power tool on again.

Work instructions for mixing

Avoid splashing the material. Otherwise you could slip and lose control of the power tool.
Avoid continuously operating the power tool at reduced speed. Otherwise the motor of the power tool could overheat.
Selection of the mixer basket is dependent on the mixing material that is to be mixed.
For mixing materials with low viscosity, e.g. emulsion paint, varnishes, adhesive, grouting compound or cement slurry, use a mixer basket with a left- hand spiral. The material is moved from the top downwards in a mixer basket with a left-hand spiral. The mixer basket is pushed upwards. Mixing materials with low viscosity are mixed in a way which minimizes splattering.
For mixing materials with high viscosity, e.g. ready-mixed plaster, concrete, cement, screed, filler or epoxy resin, use a mixer basket with right-hand spiral. The material is moved from the bottom upwards in a mixer basket with a right-hand spiral. The mixer basket works its way into the mixture. Mixing materials with high viscosity are mixed thoroughly. Move the power tool up and down when working. Clean the mixer basket after use.
Store the power tool in a safe place. Ensure that it cannot fall over. The power tool may become damaged if this happens.

Maintenance and Service

Maintenance and Cleaning

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.
In order to avoid safety hazards, if the power supply cord needs to be replaced, this must be done by Bosch or by an after-sales service centre that is authorised to repair Bosch power tools.

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.

CUSTOMER SUPPORT

Malaysia
Robert Bosch Sdn. Bhd.(220975-V) PT/SMY
No. 8A, Jalan 13/6
46200 Petaling Jaya
Selangor
Tel.: (03) 79663194
Toll-Free: 1800 880188
Fax: (03) 79583838
E-Mail: kiathoe.chong@my.bosch.com
www.bosch-pt.com.my
You can find further service addresses at:
www.bosch-pt.com/serviceaddresses
Disposal
The power tool, accessories and packaging should be recycled in an environmentally friendly manner.
Do not dispose of power tools along with household waste.
Thomas Donato
Chairman of the
Management Board
Helmut Heinzelmann
Head of Product Certification
Signature Robert Bosch Power Tools GmbH, 70538 Stuttgart, GERMANY Stuttgart, 31.10.2023
Robert Bosch Power Tools GmbH
70538 Stuttgart
GERMANY
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