1. Introduction
Thank you for choosing the OMMO 21V MAX Cordless Impact Drill. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new power tool. Please read this manual thoroughly before first use and retain it for future reference.
1.1 Product Overview
The OMMO 21V MAX Cordless Impact Drill is a versatile tool designed for various drilling and screwing tasks in wood, metal, and masonry. It features a powerful 21V motor, 25+3 torque settings for precise control, and two variable speed ranges to adapt to different applications. The integrated impact function enhances its capability for drilling into harder materials like concrete and brick.
1.2 Package Contents
Upon unpacking, please verify that all items listed below are present and undamaged:
- OMMO 21V Cordless Impact Drill (1 unit)
- 21V Li-ion Battery (1 unit)
- Fast Charger (1 unit)
- 24-piece Drilling Bit Set (includes wood, metal, impact bits, extended shaft, socket set, screw bits, connector)
- Tool Case (1 unit)
- User Manual (1 unit)
Image 1.1: The OMMO 21V MAX Cordless Impact Drill with its included battery, charger, and 24-piece accessory kit, all stored within the provided tool case.
2. Safety Instructions
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury when using power tools.
2.1 General Power Tool Safety
- 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. Do not expose power tools to rain or wet conditions.
- Personal Safety: Always wear eye protection. Use hearing protection when operating for extended periods. Dress properly; avoid loose clothing or jewelry. Secure long hair.
- Tool Use and Care: Do not force the power tool. Use the correct power tool for your application. Disconnect the plug from the power source and/or remove 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. Use power tools only with specifically designated battery packs.
2.2 Specific Drill Safety
- Hold the power tool by insulated gripping surfaces when performing an operation where the cutting accessory may contact hidden wiring or its own cord.
- Always ensure the workpiece is securely clamped or held before drilling.
- Be aware of the drill's torque reaction, especially at higher settings, and maintain a firm grip.
3. Setup
3.1 Battery Charging
- Connect the fast charger to a standard power outlet.
- Slide the 21V Li-ion battery onto the charger until it clicks into place.
- The charger indicator light will show the charging status. Allow approximately 40 minutes for a full charge.
- Once fully charged, remove the battery from the charger. Do not overcharge.
Image 3.1: The 21V Li-ion battery features multiple protection mechanisms for safe and efficient charging and operation.
3.2 Battery Installation and Removal
- Installation: Align the battery with the base of the drill handle and slide it in until it locks securely.
- Removal: Press the release buttons on the sides of the battery pack and slide the battery out.
3.3 Bit Installation and Removal (Keyless Chuck)
- Ensure the drill is switched off and the forward/reverse switch is in the center (locked) position.
- Rotate the chuck counter-clockwise to open the jaws.
- Insert the desired drill bit or screwdriver bit into the chuck, ensuring it is centered.
- Rotate the chuck clockwise to tighten the jaws firmly around the bit. A secure grip prevents slippage during operation.
- To remove, rotate the chuck counter-clockwise to loosen the jaws and pull the bit out.
4. Operating Instructions
4.1 Torque Setting Adjustment
The drill features a 25+3 clutch setting, allowing you to adjust the torque for various applications. Rotate the torque adjustment ring (located behind the chuck) to select the desired setting:
- Settings 1-25: For screwing tasks. Lower numbers are for smaller screws and softer materials, higher numbers for larger screws and harder materials.
- Drill Symbol (⚒): For general drilling in wood and metal. The clutch will not engage, providing maximum torque.
- Impact Drill Symbol (⚒ with hammer): For impact drilling into masonry, brick, or concrete.
Image 4.1: The torque adjustment ring offers 25 settings for screwing, plus dedicated modes for drilling and impact drilling.
Image 4.2: Detailed view of the mode selector for wall drilling (impact), wood/metal drilling, and screw adjustment.
4.2 Speed Selection
The drill features two variable speed ranges, selected via the gear switch on top of the drill:
- Gear 1 (0-500 RPM): Low speed, high torque. Ideal for driving screws, larger drilling diameters, and applications requiring more control.
- Gear 2 (0-1500 RPM): High speed, lower torque. Suitable for fast drilling in wood and metal, and smaller drilling diameters.
The trigger switch provides infinitely variable speed within the selected gear range. Press the trigger gently for slower speeds and harder for faster speeds.
Image 4.3: The two-speed gearbox allows selection between low-speed, high-torque (0-500 RPM) and high-speed, lower-torque (0-1500 RPM) operations.
4.3 Forward/Reverse Control and LED Light
- Forward/Reverse Switch: Located above the trigger, this switch controls the direction of rotation. Push it to the left for forward (clockwise) rotation and to the right for reverse (counter-clockwise) rotation. The center position locks the trigger for safety and bit changes.
- LED Work Light: An integrated LED light illuminates the work area when the trigger is pressed, providing better visibility in dimly lit spaces.
4.4 Drilling Operations
- Wood/Metal Drilling: Select the appropriate drill bit and set the torque ring to the drill symbol (⚒). Choose speed gear 1 for larger holes or gear 2 for smaller, faster holes. Apply steady, even pressure.
- Impact Drilling (Wall/Brick): Select a masonry drill bit and set the torque ring to the impact drill symbol (⚒ with hammer). Use speed gear 2 for optimal impact action. Apply firm, consistent pressure.
- Screwing: Select the correct screwdriver bit and set the torque ring to a numerical setting (1-25) appropriate for the screw size and material. Start with a lower setting and increase if the screw is not driving fully. Use speed gear 1 for better control.
Image 4.4: The impact function allows for powerful drilling into hard surfaces like concrete walls.
Image 4.5: The drill demonstrating its versatility across different applications: impact drilling, wood drilling, and precise screw driving.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your OMMO drill.
- Cleaning: After each use, wipe the tool with a clean, damp cloth. Do not use harsh chemicals or abrasive cleaners. Keep ventilation openings clear of dust and debris.
- Storage: Store the drill, battery, and charger in the provided tool case in a dry, secure location, away from direct sunlight and extreme temperatures. Ensure the battery is partially charged (not fully depleted or fully charged for long-term storage).
- Battery Care: Do not store batteries in a discharged state. Recharge them periodically if not used for extended periods. Avoid exposing batteries to water or extreme heat.
- Chuck Maintenance: Periodically clean the chuck jaws to ensure proper gripping of bits.
6. Troubleshooting
If you encounter issues with your drill, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Drill does not start | Battery is not charged or not properly installed. Forward/reverse switch is in the center (locked) position. | Charge the battery and ensure it is securely installed. Move the forward/reverse switch to the left or right. |
| Loss of power during operation | Battery is low. Overload protection activated. | Recharge the battery. Reduce pressure on the drill or use a lower speed/higher torque setting. |
| Bit slips in chuck | Chuck not tightened sufficiently. Bit shank is dirty or damaged. | Ensure the chuck is tightened firmly. Clean or replace the bit. |
| Drill overheats | Continuous heavy use. Blocked ventilation. | Allow the drill to cool down. Clear any debris from the ventilation slots. |
If the problem persists after attempting these solutions, please contact customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | OMMO |
| Model Number | OM049-3-36S |
| Power Source | Battery Powered |
| Voltage | 21 Volts |
| Battery Capacity | 2000mAh Li-ion |
| Torque Settings | 25+3 (Drill, Impact Drill) |
| Maximum Torque | 320 Inch Pounds |
| No-Load Speed (Gear 1) | 0-500 RPM |
| No-Load Speed (Gear 2) | 0-1500 RPM |
| Chuck Size | 3/8 Inch Keyless |
| Special Features | Variable Speed, LED Work Light, Forward/Reverse Control |
| Item Weight | 20000 Grams (20 kg) |
| Product Dimensions | 28.8 x 25.1 x 8.71 cm |
8. Warranty and Support
8.1 Warranty Information
OMMO products are manufactured to high-quality standards. For specific warranty details regarding your OMMO 21V MAX Cordless Impact Drill, please refer to the warranty card included in your package or visit the official OMMO website. Keep your purchase receipt as proof of purchase for any warranty claims.
8.2 Customer Support
Should you have any questions, require technical assistance, or need to report a problem with your product, please contact OMMO customer support. Contact information can typically be found on the product packaging, the official OMMO website, or through your retailer.
