1. Product Overview
The Metabo HPT 36V MultiVolt Cordless Forming Nailer (NR3675DD) is a battery-powered tool designed for driving duplex/double-headed fasteners in concrete forming and temporary wood structures. This tool offers the convenience of cordless operation combined with the performance characteristics of a pneumatic nailer, thanks to its Air Spring Drive System.
Key features include:
- Air Spring Drive System: Provides a consistent and powerful driving force similar to pneumatic tools.
- Selective Actuation: Allows users to switch between sequential and contact nailing modes.
- Dry-Fire Lockout: Prevents the tool from firing when the magazine is empty, protecting both the tool and the workpiece.
- Brushless Motor: Enhances runtime, increases power, and extends tool durability with minimal maintenance.
- Tool-less Depth Adjustment: Enables quick and easy adjustment of nail driving depth without additional tools.
- Duplex/Double Headed Fasteners: Specifically designed for 16D, 8D, and 6D duplex nails, facilitating easy removal of temporary structures.
Image 1.1: The Metabo HPT 36V MultiVolt Cordless Forming Nailer kit, including the nailer, a 2.5Ah MultiVolt battery, a charger, and a carrying bag.
2. Safety Information
Always read and understand 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.
General Power Tool Safety Warnings
- Wear eye protection and hearing protection.
- 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.
- Dress properly. Do not wear loose clothing or jewelry. Keep your hair and clothing away from moving parts.
- Always maintain proper footing and balance.
- Disconnect the battery pack from the tool before making any adjustments, changing accessories, or storing power tools.
Nailer Specific Safety Warnings
- Always assume the tool contains fasteners.
- Do not point the tool at yourself or anyone nearby.
- Do not actuate the tool unless the workpiece contact is firmly against the workpiece.
- Do not drive fasteners near the edge of a workpiece.
- Use only the specified fasteners for this tool.
3. Setup
3.1 Unpacking and Inspection
Carefully remove all components from the packaging. Inspect the tool and all accessories for any signs of damage. If any damage is found, do not operate the tool and contact Metabo HPT customer service.
3.2 Included Components
The NR3675DD kit typically includes:
- NR3675DD Cordless Forming Nailer
- 36V MultiVolt™ 2.5Ah battery (371751M / BSL36A18)
- 36V/18V Charger (UC18YFSL)
- Carrying Bag (372294M)
- 3mm Hex Wrench (943277)
- 4mm Hex Wrench (944458)
- Safety Glasses (875769)
Image 3.1: Visual representation of the components included in the NR3675DD kit.
3.3 Battery Installation and Charging
- Ensure the battery is fully charged before first use. Connect the 36V/18V Charger (UC18YFSL) to a power outlet and insert the 36V MultiVolt™ battery. The charger indicator light will show charging status.
- To install the battery, align the battery pack with the receptacle on the tool handle and slide it in until it clicks into place.
- To remove the battery, press the release button(s) on the battery pack and slide it out.
3.4 Loading Fasteners
The nailer uses 16D, 8D, or 6D duplex/double-headed fasteners. Refer to the tool's magazine for specific nail collation angle and size requirements.
- Ensure the battery is removed from the tool for safety.
- Pull back the pusher assembly until it locks into place.
- Insert a strip of collated nails into the magazine, ensuring the nail heads are properly seated.
- Release the pusher assembly, allowing it to push the nails forward until they are seated against the nose of the tool.
Image 3.2: Proper method for loading collated duplex nails into the nailer's magazine.
4. Operating Instructions
4.1 Adjusting Depth of Drive
The NR3675DD features tool-less depth adjustment:
- Locate the depth adjustment dial or lever near the nose of the tool.
- Rotate the dial or move the lever to increase or decrease the driving depth. Test on a scrap piece of material to achieve the desired depth.
Image 4.1: Detail of the tool-less depth adjustment feature.
4.2 Selecting Actuation Mode
The selective actuation switch allows you to choose between two firing modes:
- Sequential Firing: For precise fastener placement. The trigger must be pulled for each fastener after the nose is pressed against the workpiece.
- Contact Firing: For rapid fastening. Fasteners are driven when the nose is pressed against the workpiece while the trigger is held down.
4.3 Driving Fasteners
- Ensure the battery is installed and fasteners are loaded.
- Select the desired actuation mode.
- Place the nose of the tool firmly against the workpiece where the fastener is to be driven.
- Engage the trigger according to the selected actuation mode.
- The tool can drive up to 900 nails per charge with the included 2.5Ah MultiVolt battery.
Image 4.2: The nailer in operation, demonstrating its use in construction applications.
Image 4.3: Driving double-headed fasteners for temporary wood structures.
4.4 Using the Belt Hook
The integrated pivoting belt hook provides convenient storage and accessibility when working on a job site.
Image 4.4: Detail of the pivoting belt hook for convenient tool carrying.
5. Maintenance
5.1 General Cleaning
Keep the tool clean and free of debris. Use a dry cloth to wipe down the exterior. Do not use harsh chemicals or abrasive cleaners.
5.2 Brushless Motor
The brushless motor in the NR3675DD is designed for extended durability and requires essentially no maintenance. Regular inspection for any unusual noises or performance changes is recommended.
5.3 Battery and Charger Care
- Store batteries in a cool, dry place away from direct sunlight and extreme temperatures.
- Do not expose batteries or chargers to water or moisture.
- Only use the Metabo HPT UC18YFSL charger with Metabo HPT MultiVolt batteries.
6. Troubleshooting
This section addresses common issues you might encounter with your Metabo HPT NR3675DD nailer. For problems not listed here, or if solutions do not resolve the issue, contact Metabo HPT customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not fire | Battery not installed correctly or discharged | Ensure battery is fully seated. Charge battery if necessary. |
| Tool fires but no fastener is driven | Magazine is empty (Dry-Fire Lockout engaged) | Reload fasteners into the magazine. |
| Fasteners not driven to desired depth | Depth adjustment set too shallow | Adjust the tool-less depth adjustment to a deeper setting. |
| Tool jams frequently | Incorrect fastener size or type; damaged fasteners | Ensure correct fasteners are used. Inspect fasteners for damage before loading. |
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | NR3675DD |
| Brand | Metabo HPT |
| Power Source | Battery Powered |
| Voltage | 36 Volts |
| Battery Type | Lithium Ion (MultiVolt) |
| Fastener Type | Duplex/Double Headed Fasteners (16D / 8D / 6D) |
| Nails Per Charge (2.5Ah battery) | Up to 900 |
| Item Weight | 9 pounds |
| Package Dimensions | 19.2 x 14.6 x 7.8 inches |
| Manufacturer | Koki Holdings America, Ltd |
8. Warranty Information
Metabo HPT provides the following warranty for the NR3675DD Cordless Forming Nailer:
- Tool Body: Lifetime Lithium Ion Tool Body Warranty
- Battery: 2-Year Battery Warranty
- Charger: 1-Year Charger Warranty
Please retain your proof of purchase for warranty claims. For full terms and conditions, refer to the official Metabo HPT warranty documentation or visit their website.
Image 8.1: Summary of Metabo HPT product warranty.
9. Support and Contact
For technical assistance, service, or to inquire about replacement parts, please contact Metabo HPT customer support. Visit the official Metabo HPT website for the most current contact information and support resources.
Website: www.metabo-hpt.com