Dewalt DCD790 Cordless Brushless Drill Owner's Manual

The Dewalt DCD790 is a powerful cordless brushless drill designed for both professionals and DIY enthusiasts. It features a high-performance brushless motor that delivers up to 2000 RPM, providing efficient drilling and fastening capabilities. The drill is lightweight and compact, making it easy to handle in tight spaces. 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 Drill 8. Maintenance and Care 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Brushless motor, 2-speed transmission, LED work light, ergonomic handle, and keyless chuck.

Feature	Description
Brushless Motor	Provides longer runtime and increased efficiency.
2-Speed Transmission	Allows for high-speed drilling and high-torque applications.
LED Work Light	Illuminates dark work areas for better visibility.
Ergonomic Handle	Designed for comfort and reduced fatigue during extended use.
Keyless Chuck	Allows for quick and easy bit changes.

Installation

Unpack and inspect contents. Ensure all parts are included and in good condition.

Charge the battery: Use the provided charger to fully charge the battery before first use.
Attach the battery: Align the battery with the base of the drill and push until it clicks into place.
Insert the drill bit: Open the keyless chuck, insert the bit, and tighten securely.

WARNING! Always wear safety goggles when operating the drill.

First-Time Setup

Power on the drill; ensure the battery is properly installed.

Select the speed setting: Choose between low and high speed based on the task.
Adjust the torque: Set the torque control ring according to the material being drilled.
Test the drill: Perform a test drill on a scrap piece of material.

CAUTION! Ensure the drill is off when changing settings.

Specifications

Motor Type: Brushless.
Voltage: 20V MAX.
Speed: 0-600 / 0-2000 RPM.
Torque: 70 Nm.
Chuck Size: 1/2 inch.
Weight: 3.4 lbs (with battery).
Battery Type: Lithium-ion.
Charging Time: 60 minutes.

Controls and Settings

Access speed and torque settings via the control ring and switch located on the top of the drill.

LED Indicator: Indicates battery charge status and operational readiness.

Connecting Accessories

Compatible with a variety of drill bits and accessories.

Ensure the drill is off before changing bits.
Use the keyless chuck to securely attach bits.
Select the appropriate bit for the task at hand.

Tip: Keep a variety of bits on hand for different applications.

Operating the Drill

Follow these steps for effective operation:

Power on the drill by pressing the trigger.
Adjust speed and torque as needed for the material.
Maintain a firm grip and apply steady pressure while drilling.

WARNING! Do not exceed the drill's rated capacity.

Maintenance and Care

Regular maintenance ensures optimal performance.

Clean the drill after each use to remove dust and debris.
Inspect the battery and charger for damage.
Store in a dry place away from extreme temperatures.

Regulatory Information

This product complies with all applicable safety standards and regulations. For further information, visit the Dewalt website or contact customer support.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Drill won't start	Battery not charged	Charge the battery fully before use.
Bit slipping	Chuck not tightened	Tighten the chuck securely around the bit.
Overheating	Continuous use	Allow the drill to cool down before resuming use.
Battery not charging	Faulty charger	Check charger for damage; replace if necessary.

Service: For further assistance, contact Dewalt customer support.