1. Introduction
The Bosch GSR 14.4-2 Professional Cordless Drill/Driver is a compact and durable power tool designed for a wide range of drilling and screwdriving applications. It features a 2-speed gearbox, 25 torque settings plus a drill setting, and is powered by a 14.4V NiMH battery. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your device.
Figure 1: Bosch GSR 14.4-2 Professional Cordless Drill/Driver. This image displays the main unit of the drill/driver, highlighting its ergonomic design and key components such as the chuck, speed selector, and battery pack.
2. Safety Instructions
Always observe the following safety precautions when operating the Bosch GSR 14.4-2 Professional Cordless Drill/Driver:
- Work Area Safety: Keep your 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.
- Electrical Safety: 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.
- Personal Safety: Always wear eye protection. Use hearing protection when operating for extended periods. Wear a dust mask if drilling or driving in dusty conditions. Dress properly; avoid loose clothing or jewelry.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
- 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.
3. Package Contents
Verify that all items listed below are present in your package:
- Bosch GSR 14.4-2 Professional Cordless Drill/Driver
- Charger AL 2450 DV
- 2 x 2.6 Ah NiMH batteries
- Carrying case
4. Product Overview
The Bosch GSR 14.4-2 Professional is engineered for versatility and durability. Its compact design ensures excellent handling, making it suitable for overhead work and tight spaces. The tool features a robust "Dura Shield" housing for enhanced resilience.
Figure 2: The drill/driver held in hand, demonstrating its compact size and ergonomic grip for comfortable operation.
5. Setup
5.1. Charging the Battery
- Connect the Charger AL 2450 DV to a suitable power outlet.
- Insert the 14.4V NiMH battery pack into the charger.
- Allow approximately 60 minutes for a full charge. The charger's indicator light will signal when charging is complete.
5.2. Inserting the Battery Pack
- Ensure the drill/driver is switched off.
- Slide the charged battery pack into the base of the tool until it clicks securely into place.
5.3. Attaching Accessories (Drill Bits/Screwdriver Bits)
- Rotate the chuck counter-clockwise to open the jaws.
- Insert the desired drill bit or screwdriver bit into the chuck. The chuck clamping range is 1-10 mm.
- Rotate the chuck clockwise to tighten the jaws firmly around the bit. Ensure the bit is centered and secure.
6. Operating Instructions
6.1. Powering On/Off
To power on the tool, press the trigger switch. The tool will start operating. To power off, release the trigger switch.
6.2. Selecting Speed
The GSR 14.4-2 features a 2-speed gearbox:
- Gear 1 (0-400 RPM): For high torque applications, such as driving large screws or drilling large diameter holes.
- Gear 2 (0-1400 RPM): For high-speed drilling in smaller diameters or light screwdriving.
Use the speed selector switch located on top of the tool to choose between Gear 1 and Gear 2. Change speeds only when the tool is stationary.
6.3. Adjusting Torque Settings
The tool offers 20 torque settings plus a drill setting. Rotate the torque adjustment ring behind the chuck to select the desired setting. Lower settings are for smaller screws and softer materials, while higher settings are for larger screws and harder materials. The drill symbol bypasses the clutch for maximum power when drilling.
6.4. Forward/Reverse Operation
The forward/reverse switch, located above the trigger, controls the direction of rotation. Push it to the left for forward rotation (screwdriving in, drilling) and to the right for reverse rotation (screwdriving out). Position the switch in the center to lock the trigger and prevent accidental startup.
6.5. Drilling and Screwdriving
For drilling, select the drill symbol on the torque ring. For screwdriving, select an appropriate torque setting. Apply steady, even pressure. The maximum drilling capacity is 35 mm in wood and 13 mm in steel. The maximum screw diameter is 8 mm.
Figure 3: The drill/driver being used for overhead drilling, showcasing its capability in various working positions.
Figure 4: The drill/driver in action, driving screws into a wooden floor, demonstrating its application in screwdriving tasks.
7. Maintenance
7.1. Cleaning
Regularly clean the ventilation slots of the power tool to prevent overheating. Use a soft brush or compressed air to remove dust and debris. Do not use water or chemical cleaning agents.
7.2. Battery Care
To prolong the life of your NiMH batteries:
- Store batteries in a cool, dry place away from direct sunlight.
- Do not store fully discharged batteries for extended periods. Recharge them periodically.
- Avoid exposing batteries to extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery discharged; Battery not inserted correctly; Forward/reverse switch in center (locked) position | Charge battery; Reinsert battery securely; Move forward/reverse switch to forward or reverse position |
| Reduced power/performance | Battery low; Incorrect torque setting for task | Recharge battery; Adjust torque setting higher or switch to drill mode |
| Chuck not holding bit securely | Chuck not tightened enough; Bit shank dirty or damaged | Tighten chuck firmly; Clean or replace bit |
| Overheating | Ventilation slots blocked; Continuous heavy use | Clean ventilation slots; Allow tool to cool down during heavy use |
9. Specifications
| Feature | Specification |
|---|---|
| Model | GSR 14.4-2 Professional |
| Battery Voltage | 14.4 V |
| Battery Type | NiMH |
| Battery Capacity | 1.5 Ah (2 x 2.6 Ah NiMH batteries included) |
| No-load Speed (1st Gear) | 0 - 400 RPM |
| No-load Speed (2nd Gear) | 0 - 1400 RPM |
| Max. Torque (Hard) | 30 Nm |
| Max. Torque (Soft) | 11 Nm |
| Torque Settings | 20 + 1 (Drill) |
| Chuck Clamping Range | 1 - 10 mm |
| Max. Drilling Diameter (Wood) | 35 mm |
| Max. Drilling Diameter (Steel) | 13 mm |
| Max. Screw Diameter | 8 mm |
| Weight (incl. battery) | 1.7 kg |
| Charging Time (approx.) | 60 mins |
| Included Components | Charger AL 2450 DV, 2 x 2.6 Ah NiMH batteries, Carrying case |
10. Warranty and Support
For warranty information, service, or technical support, please refer to the official Bosch documentation included with your product or visit the official Bosch website. Contact details for customer service can typically be found on the product packaging or on the manufacturer's website.
