Introduction
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your Pretul Angle Grinder, Model 24035 / ESMA-4-1/2P2. Please read this manual thoroughly before using the tool and keep it for future reference.
Figure 1: Pretul Angle Grinder, Model 24035 / ESMA-4-1/2P2. This image shows the overall design of the angle grinder with its main body, auxiliary handle, and abrasive disc.
Safety Instructions
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury.
- Wear appropriate personal protective equipment (PPE) including safety glasses, hearing protection, and gloves.
- Ensure the work area is 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.
- Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
- Always disconnect the plug from the power source before making any adjustments, changing accessories, or storing power tools.
- Use the correct abrasive disc for the material being worked on.
- Secure the workpiece. Use clamps or a vise to hold the workpiece firmly.
- Maintain a firm grip on the tool with both hands during operation.
Components and Features
Figure 2: Key components of the Pretul Angle Grinder. This diagram highlights the auxiliary handle, spindle lock, switch and continuous use button, abrasive disc, and protective guard.
- Abrasive Disc: Used for grinding and cutting various materials.
- Auxiliary Handle: Provides additional grip and control during operation. Can be mounted on either side.
- Protective Guard: Shields the user from sparks and debris. Must always be in place.
- Spindle Lock: Button used to lock the spindle for easy disc changes.
- Switch and Continuous Use Button: Activates the tool and allows for continuous operation without holding the trigger.
Setup
Attaching the Auxiliary Handle
The auxiliary handle can be screwed into either of the two threaded holes on the gear housing, depending on user preference and application. Ensure it is tightened securely before use.
Installing the Abrasive Disc
- Ensure the tool is unplugged from the power source.
- Press and hold the spindle lock button.
- Place the inner flange onto the spindle.
- Position the abrasive disc onto the inner flange, ensuring it is centered.
- Screw the outer flange (nut) onto the spindle.
- Use the provided two-pin wrench to tighten the outer flange securely. Release the spindle lock.
Figure 3: Included components for the Pretul Angle Grinder. This image shows the abrasive disc, auxiliary handle, protective guard, two-pin wrench, and flanges.
Operating Instructions
Starting and Stopping the Tool
- To start: Push the switch forward.
- For continuous operation: Push the switch forward and then press the continuous use button.
- To stop: Release the switch. If in continuous operation, press the switch again to release the continuous use button.
Grinding and Cutting Techniques
The Pretul Angle Grinder is suitable for grinding and cutting various materials including steel, bricks, tiles, and stone.
Figure 4: The angle grinder is capable of grinding and cutting steel, bricks, tiles, and stone. Always use the appropriate disc for the material.
- Always allow the disc to reach full speed before contacting the workpiece.
- Apply light, even pressure. Do not force the tool, as this can lead to kickback or damage to the disc/tool.
- For grinding, hold the tool at a slight angle (15-30 degrees) to the workpiece.
- For cutting, hold the tool perpendicular to the workpiece and make straight, controlled cuts.
- Be aware of sparks and debris. Ensure no flammable materials are nearby.
Maintenance
Regular maintenance ensures optimal performance and extends the life of your angle grinder.
- Cleaning: After each use, clean the tool with a dry cloth. Do not use water or chemical cleaners. Ensure ventilation openings are clear of dust and debris.
- Carbon Brushes: The carbon brushes are wear parts. If the motor performance decreases or excessive sparking occurs, the brushes may need replacement. This should be done by a qualified service technician.
- Cord Inspection: Regularly inspect the power cord for damage. Do not use the tool if the cord is frayed or cut.
- Disc Inspection: Before each use, inspect the abrasive disc for cracks, chips, or excessive wear. Replace damaged discs immediately.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | No power supply; Damaged power cord; Faulty switch | Check power outlet and connections; Inspect power cord for damage; Contact service center if switch is faulty. |
| Excessive vibration | Improperly installed disc; Damaged disc; Loose auxiliary handle | Reinstall disc correctly; Replace damaged disc; Tighten auxiliary handle. |
| Reduced performance / Excessive sparking | Worn carbon brushes | Have carbon brushes inspected and replaced by a qualified technician. |
| Overheating | Blocked ventilation slots; Continuous heavy use | Clean ventilation slots; Allow tool to cool down during prolonged use. Observe duty cycle (20 min work / 10 min rest). |
Specifications
Figure 5: Dimensions and key characteristics of the Pretul Angle Grinder.
| Feature | Detail |
|---|---|
| Model | 24035 / ESMA-4-1/2P2 |
| Brand | Pretul |
| Power Source | Corded Electric |
| Voltage | 120 Volts |
| Wattage | 630 Watts (700W peak/max) |
| Maximum Rotational Speed | 12,000 RPM |
| Disc Diameter | 4-1/2 inches (115 mm) |
| Material | Metal |
| Item Weight | 4.94 pounds (approx. 2.24 kg) |
| Product Dimensions (L x H) | 27 cm x 10 cm |
| Duty Cycle | 20 minutes work / 10 minutes rest |
Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or contact Pretul customer service. Keep your proof of purchase for warranty claims.
Note: Specific warranty terms and conditions may vary by region.
