Bosch GBH 3-28 E Rotary Hammer Drill User Manual

Selelekela

The Bosch GBH 3-28 E is a powerful rotary hammer drill designed for demanding drilling and chiseling tasks. Featuring an SDS-plus tool holder, it delivers maximum power with minimal vibrations, ensuring high drilling progress and 20% more chiseling performance compared to other rotary hammers in its class. This manual provides essential information for safe and efficient operation, setup, maintenance, and troubleshooting.

Image of the Bosch GBH 3-28 E rotary hammer drill, showcasing its robust design and ergonomic handle. This tool is engineered for heavy-duty applications.

Likarolo tsa Bohlokoa:

• Maximum power output for demanding tasks.
• SDS-plus tool holder with dust protection.
• Reduced vibrations for comfortable operation.
• High drilling progress and superior chiseling performance.

Litaelo tsa Tšireletseho

Always observe the following safety precautions when operating the Bosch GBH 3-28 E rotary hammer drill to prevent electric shock, fire, and serious injury.

Litemoso tse Akaretsang tsa Polokeho ea Sesebelisoa sa Matla:

• Tšireletseho ea Sebaka sa Mosebetsi: Boloka sebaka seo u sebeletsang ho sona se hloekile ebile se khantšitse hantle. Libaka tse mahlahahlaha kapa tse lefifi li mema likotsi. Se ke oa sebelisa lisebelisoa tsa motlakase libakeng tse phatlohang, joalo ka moo ho nang le maro a tukang, likhase kapa lerōle.
• Tšireletseho ea Motlakase: 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. Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges, and refrigerators.
• Tšireletseho ea Botho: Always wear eye protection. Use hearing protection when operating for extended periods. Wear a dust mask if operations create dust. Dress properly; do not wear loose clothing or jewelry. Keep hair, clothing, and gloves away from moving parts.
• Tšebeliso le Tlhokomelo ea Lisebelisoa: U se ke ua qobella sesebelisoa sa matla. Sebelisa sesebelisoa sa motlakase se nepahetseng bakeng sa ts'ebeliso ea hau. Tlosa polaka mohloling oa matla le/kapa u tlose pakete ea betri sesebelisoa sa motlakase pele u etsa litokiso leha e le life, ho fetola lisebelisoa kapa ho boloka lisebelisoa tsa motlakase.
• Tšebeletso: Etsa hore sesebelisoa sa hau sa motlakase se sebeletsoe ke motho ea tšoanelehang oa ho lokisa ea sebelisang likarolo tse ling tse tšoanang feela. Sena se tla netefatsa hore polokeho ea sesebelisoa sa motlakase e bolokiloe.

Litaba tsa Sephutheloana

Ha u qeta ho pakela, ka kopo etsa bonnete ba hore lintho tsohle tse thathamisitsoeng ka tlase li teng ebile li maemong a matle:

• Bosch GBH 3-28 E Rotary Hammer Drill
• Thuso e Thusang
• Botebo Stop
• Nyeoe ea Lipalangoang
• Bukana ea mosebelisi (tokomane ena)

Tlhophiso

Before operating the rotary hammer drill, follow these steps for proper setup:

1. Ho Hokela Setshoaro sa Thuso:

1. Lokolla setshwaro sa tlatsetso ka ho se fetola ho ya ka nqa ya watjhe.
2. Theolela mohele hodima molaleng wa sesebediswa ho ya sebakeng seo o se batlang.
3. Tighten the handle by turning it clockwise until secure. Ensure it is firmly fixed for safe operation.

2. Inserting the Depth Stop:

1. Kenya sebaka sa ho emisa botebo ka hara lesoba le kgethilweng hodima mohele o thusang.
2. Adjust the depth stop to the required drilling depth.
3. Tiisa botebo ba ho emisa ka ho tiisa mohele o thusang.

3. Inserting SDS-plus Drill Bits/Chisels:

1. Clean the shank of the drill bit or chisel and apply a thin layer of grease.
2. Insert the tool into the SDS-plus tool holder with a slight twisting motion until it locks.
3. Pull on the tool to check if it is securely locked. A slight axial play is normal and necessary for the hammer mechanism.

Litaelo tsa Ts'ebetso

Familiarize yourself with the controls and functions before beginning work.

1. Mode Selector Switch:

The GBH 3-28 E features a mode selector switch to choose between different operating modes:

• Drilling (Rotation only): For drilling in wood, metal, ceramics, and plastics without hammer action.
• Hammer Drilling (Rotation with Hammer Action): Bakeng sa ho cheka ka konkreite, masonry le majoe.
• Chiseling (Hammer Action only): For light chiseling work, such as removing tiles or breaking small sections of concrete.

Hlokomela: Always switch modes only when the tool is switched off to prevent damage to the gearbox.

2. Ho Bulela/Ho Koala:

• To switch on, press the On/Off switch.
• Ho tima, lokolla switch ea On/Off.
• Bakeng sa ts'ebetso e tsoelang pele, tobetsa konopo ea On/Off ebe o tobetsa konopo ea ho notlela. Ho tima, tobetsa konopo ea On/Off hape.

3. Speed Preselection:

The rotary hammer drill features a speed preselection wheel. Adjust the speed according to the material and the size of the drill bit/chisel. Lower speeds are generally used for larger diameters and harder materials.

4. Working with the Tool:

• Ho cheka: Apply moderate pressure. Let the tool do the work. Excessive pressure will not speed up drilling but can damage the drill bit and the tool.
• Chiseling: Hold the tool firmly with both hands. Guide the chisel along the desired line.
• Tšireletso e feteletseng: The tool is equipped with an overload clutch. If the drill bit jams, the drive to the spindle is interrupted. Always hold the tool firmly with both hands to counteract the reaction forces.

Tlhokomelo

Regular maintenance ensures the longevity and optimal performance of your Bosch GBH 3-28 E rotary hammer drill.

1. Ho hloekisa:

• Always disconnect the plug from the power outlet before any cleaning or maintenance work.
• Keep the ventilation slots clean to prevent overheating.
• Clean the tool holder regularly. Remove dust and debris.
• Hlakola ntlo ea lisebelisoa ka bonolo, damp lesela. U se ke ua sebelisa lintho tse hloekisang ka thata kapa li-solvents.

2. Lubrication:

The SDS-plus tool holder requires periodic lubrication. Apply a thin layer of special grease to the shank of the drill bits and chisels before insertion to ensure smooth operation and reduce wear.

3. Carbon Brushes:

The carbon brushes are wear parts. If the motor sparks excessively or the tool loses power, the carbon brushes may need replacement. This should be performed by an authorized Bosch service center.

4. Polokelo:

Store the tool in a dry, secure place, out of reach of children. Use the transport case for protection.

Ho batle phoso

This section addresses common issues you might encounter with your Bosch GBH 3-28 E rotary hammer drill.

Litlhaloso

Detailed technical specifications for the Bosch GBH 3-28 E Rotary Hammer Drill:

• Lebitso: Bosch
• Nomoro ea Mohlala: GBH 3-28 E
• Nomoro ea Karolo ea Moetsi: 611239703
• Mohloli oa Matla: Motlakase oa Corded
• Moqtage: Li-volts tse 230
• Boholo ba Matla: 800 Watts
• Lebelo le sa Kenoeng: 900 RPM
• Boima ba Sehlahisoa: 3.5 lik'hilograma
• Boitsebiso: Tšepe
• Mmala: Ntsho
• Likarolo tse Khethehileng: Transmission, Long lifespan, Robust design
• Mofuta oa ho phunya: Mochini oa rotary Hammer Drill
• Sets'oants'o sa Lisebelisoa: SDS-plus
• Nomoro ea Ntho ea Khoebo ea Lefatše (GTIN): 03165140220255

Warranty le Tšehetso

Warranty information for the Bosch GBH 3-28 E rotary hammer drill is typically provided with the purchase documentation. Please refer to your sales receipt or the warranty card included in the product packaging for specific terms and conditions.

For technical support, service, or spare parts, please contact Bosch customer service or visit their official website. Ensure you have your model number (GBH 3-28 E) and serial number (if applicable) ready when contacting support.

Ofisiri ea Bosch Websebaka: www.bosch-professional.com