Dewalt DCD790 Manual

The Dewalt DCD790 is a powerful 20V MAX cordless drill/driver designed for both professional and DIY use. It features a compact and lightweight design, making it easy to handle in tight spaces. The drill offers two speed settings, a high-performance motor, and a 1/2-inch ratcheting chuck for secure bit retention. 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 Drill 8. Maintenance 9. Safety Information 10. Troubleshooting

Features at a Glance

Key components: 20V MAX lithium-ion battery, 2-speed transmission, LED work light, and ergonomic handle.

Feature	Description
20V MAX battery	Long-lasting power for extended use
2-speed transmission	High speed for drilling and low speed for driving
LED work light	Illuminates dark work areas
1/2-inch ratcheting chuck	Ensures secure bit retention
Ergonomic handle	Provides comfort during use

Installation

Unpack the drill and inspect contents. Ensure battery is charged before use.

Attach the battery: Align the battery with the base of the drill and push until it clicks.
Insert drill bit: Open the chuck, insert the bit, and tighten securely.
Adjust settings: Set the speed and torque according to your task.

WARNING! Always wear safety goggles when operating the drill.

First-Time Setup

Power on the drill by inserting the charged battery. Follow the instructions for adjusting speed and torque settings.

Set the drill to the desired speed: Use the gear selector for high or low speed.
Adjust torque settings: Turn the torque adjustment collar to select the appropriate setting.

CAUTION! Ensure the drill is off when changing bits.

Specifications

Voltage: 20V MAX.
Chuck Size: 1/2 inch.
Speed: 0-600/0-2000 RPM.
Torque: 0-70 Nm.
Weight: 3.4 lbs.
Battery Type: Lithium-ion.
LED Light: Yes.

Controls and Settings

Access speed and torque settings using the gear selector and torque adjustment collar. The LED light can be activated when the trigger is pressed.

Trigger: Variable speed control for precise operation.

Connecting Devices

Ensure the drill is powered off before connecting any accessories.

Attach drill bits: Open the chuck, insert the bit, and tighten securely.
Use appropriate accessories for specific tasks.

Tip: Always use the correct bit for the material you are working with.

Operating the Drill

To operate the drill, press the trigger to start. Adjust speed and torque as needed for your task.

Drilling: Position the drill at the desired angle and apply pressure.
Driving screws: Use the appropriate bit and adjust torque settings.
Stopping: Release the trigger to stop the drill.

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

Maintenance

Regularly clean the drill and check for wear on the chuck and bits. Store in a dry place.

CAUTION! Unplug and remove the battery before cleaning.

Safety Information

Always wear appropriate safety gear when operating the drill. Follow all safety instructions provided in the manual.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Drill won't start	Battery not charged	Charge the battery and try again.
Bit slipping	Chuck not tightened	Tighten the chuck securely.
Overheating	Continuous use	Allow the drill to cool down before continuing.
Low power	Battery issue	Check battery charge and connections.

Reset: If issues persist, refer to customer support.

Service: Contact Dewalt customer service for assistance.