Dewalt D28402 Grinder Manual

The Dewalt D28402 is a powerful 4-1/2-inch angle grinder designed for heavy-duty applications. It features a 10-amp motor that delivers 12,000 RPM for fast material removal. The grinder is equipped with a durable aluminum gear case for increased durability and a two-position side handle for added comfort and control. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Accessories 7. Operating the Grinder 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 10-amp motor, 12,000 RPM, aluminum gear case, two-position side handle, and spindle lock for easy wheel changes.

Feature	Description
10-amp motor	Provides high power for demanding applications
12,000 RPM	Fast material removal for efficiency
Aluminum gear case	Durable construction for longevity
Two-position side handle	Improves control and comfort during use
Spindle lock	Allows for easy and quick wheel changes

Installation

Unpack and inspect the grinder. Ensure all components are included and undamaged.

Attach the guard: Align the guard with the grinder and secure it with the provided screws.
Install the grinding wheel: Use the spindle lock to secure the wheel in place.
Connect to power: Ensure the power source matches the grinder's requirements.

WARNING! Always wear appropriate safety gear when operating the grinder.

First-Time Setup

Before using the grinder, familiarize yourself with its components and controls.

Check the power supply: Ensure it is compatible with the grinder.
Inspect the grinding wheel: Ensure it is properly installed and free of damage.
Test the grinder: Plug it in and run it briefly to ensure proper operation.

CAUTION! Keep hands and body clear of the grinding wheel during operation.

Specifications

Motor Power: 10 amps.
Wheel Size: 4-1/2 inches.
RPM: 12,000.
Weight: 5.5 lbs.
Dimensions: 12 x 5 x 5 inches.
Power Source: 120V AC.
Safety Features: Overload protection, safety guard.

Controls and Settings

The grinder features a power switch, adjustable guard, and a spindle lock for easy wheel changes.

Power Switch: Located on the handle for easy access.

Guard Adjustment: Can be rotated to suit the application.

Connecting Accessories

Ensure the grinder is unplugged before connecting any accessories.

Choose the appropriate grinding wheel for your task.
Use the spindle lock to secure the wheel in place.
Adjust the guard to the correct position for safety.

Tip: Always use accessories that are rated for the grinder's RPM.

Operating the Grinder

Follow these steps to operate the grinder safely and effectively.

Plug in the grinder and ensure the power switch is off.
Hold the grinder firmly with both hands.
Turn on the power switch and allow the wheel to reach full speed before making contact with the material.
Move the grinder smoothly across the surface for even results.
Turn off the grinder when finished and unplug it.

WARNING! Do not force the grinder; let the tool do the work.

Safety Features

The Dewalt D28402 grinder includes several safety features to protect the user.

Overload protection to prevent motor damage.
Safety guard to protect against debris.
Ergonomic design for better grip and control.

Care & Cleaning

Unplug the grinder before cleaning. Use a dry cloth to wipe down the exterior.

CAUTION! Do not use liquids or solvents to clean the grinder.

Regulatory Information

This grinder complies with all applicable safety standards and regulations. For support, visit www.dewalt.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Grinder won't start	Power supply issue	Check power cord and outlet.
Excessive vibration	Unbalanced wheel	Inspect and replace wheel if necessary.
Overheating	Overload or blockage	Allow to cool; check for debris.
Noisy operation	Worn bearings	Inspect and replace if needed.

Service: For further assistance, contact Dewalt customer service.