Dewalt DW400 Grinder Manual

The Dewalt DW400 is a powerful 4-1/2-inch angle grinder designed for heavy-duty applications. It features a high-performance motor, adjustable guard, and a durable design that ensures longevity and reliability. 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 Devices 7. Operating the Grinder 8. Safety Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 4-1/2 inch grinding wheel, adjustable guard, side handle, and a powerful motor for efficient grinding.

Feature	Description
Powerful Motor	Provides high performance for tough grinding tasks.
Adjustable Guard	Protects user from sparks and debris.
Side Handle	Offers better control and comfort during use.
Lock-On Switch	Allows for continuous operation without holding the trigger.
Durable Design	Built to withstand heavy-duty use.

Installation

Unpack and inspect contents. Ensure all parts are included and undamaged.

Attach the side handle: Screw it into the designated hole for better control.
Install the grinding wheel: Ensure it is securely fastened before use.
Connect to power: Plug into a suitable outlet.

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

First-Time Setup

Before operating the grinder, ensure all components are correctly installed.

Check the grinding wheel: Ensure it is the correct type for your application.
Adjust the guard: Position it to minimize exposure to sparks.
Test the power: Turn on the grinder to ensure it operates smoothly.

CAUTION! Ensure the area is clear of flammable materials before use.

Specifications

Motor Power: 7.0 Amps.
Wheel Diameter: 4-1/2 inches.
Weight: 4.5 lbs.
Speed: 10,000 RPM.
Voltage: 120V AC.
Dimensions: 12 x 4 x 4 inches.

Controls and Settings

Access the power switch and speed settings for optimal performance.

Controls: Power switch, lock-on feature, and adjustable guard.

Adjust settings according to the material being worked on for best results.

Connecting Devices

Ensure the grinder is unplugged before connecting any accessories.

Attach the grinding wheel securely.
Connect any additional attachments as needed.

Tip: Always check compatibility of accessories with the grinder.

Operating the Grinder

Follow these steps for safe and effective operation.

Power on the grinder: Use the power switch to start.
Hold securely: Use both hands for better control.
Apply pressure: Allow the grinder to do the work without forcing it.
Turn off: Switch off the grinder when finished.

WARNING! Never operate without proper safety gear.

Safety Features

The Dewalt DW400 is equipped with several safety features to protect the user.

Overload protection: Prevents motor damage.
Adjustable guard: Minimizes exposure to sparks.
Ergonomic design: Reduces fatigue during extended use.

Care & Cleaning

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

CAUTION! Do not use liquids or aerosols for cleaning.

Regulatory Information

This product complies with all relevant 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 outlet and power cord.
Excessive vibration	Improperly installed wheel	Check and secure the grinding wheel.
Overheating	Overuse or blockage	Allow to cool and check for debris.
Noisy operation	Worn bearings	Inspect and replace if necessary.

Service: For service inquiries, contact Dewalt customer support.