Dewalt Air Compressor D55146 Parts Manual

The Dewalt Air Compressor D55146 is a powerful and reliable tool designed for various applications. It features a 4.5-gallon tank, a high-efficiency motor, and a durable design suitable for both professional and DIY use. 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 Compressor 8. Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: 4.5-gallon tank, high-efficiency motor, quick recovery time, and durable construction.

Feature	Description
4.5-gallon tank	Provides ample air supply for various tools
High-efficiency motor	Delivers maximum performance and reliability
Quick recovery time	Reduces downtime between uses
Durable construction	Built to withstand tough job site conditions
Portable design	Easy to transport and store

Installation

Unpack and inspect contents. Place the compressor on a stable surface.

Connect the air hose: Ensure it is securely attached to the compressor outlet.
Plug into AC power: Use a grounded outlet to avoid electrical hazards.
Check for leaks: Use soapy water to test connections.

WARNING! Ensure all connections are secure before operating.

First-Time Setup

Power on the compressor; follow the setup instructions.

Set the desired pressure: Use the pressure regulator to adjust.
Check oil levels: Ensure the compressor is properly lubricated.
Test operation: Run the compressor briefly to ensure functionality.

CAUTION! Always follow safety guidelines during setup.

Specifications

Tank Size: 4.5 gallons.
Motor Type: High-efficiency electric motor.
Max Pressure: 200 PSI.
Weight: 70 lbs.
Dimensions: 30 x 15 x 15 inches.
Power Source: 120V AC.
Operating Temperature: 32°F to 104°F.

Controls and Settings

Access controls via the front panel: pressure gauge, regulator, and on/off switch.

Safety Features: Automatic shut-off, thermal overload protection.

Connecting Devices

Connect air tools using the appropriate fittings.

Turn off the compressor before connecting tools.
Match fittings to ensure a secure connection.
Check for leaks after connecting.

Tip: Always use the correct fittings for your tools.

Operating the Compressor

Follow these steps to operate the compressor safely.

Turn on the compressor using the power switch.
Adjust the pressure to the required level for your tool.
Monitor the pressure gauge during operation.
Turn off the compressor when finished.

WARNING! Do not exceed the maximum pressure rating.

Maintenance

Regular maintenance is essential for optimal performance.

Check oil levels regularly and change as needed.
Clean air filters to ensure proper airflow.
Inspect hoses and fittings for wear and tear.

CAUTION! Always unplug before performing maintenance.

Regulatory Information

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

Troubleshooting

Symptom	Possible Cause	Corrective Action
Compressor won't start	Power supply issue	Check outlet and power cord.
Low pressure	Leak in the system	Inspect hoses and fittings for leaks.
Excessive noise	Loose components	Tighten all screws and bolts.
Overheating	Blocked air intake	Clean air filters and ensure proper ventilation.

Reset: Follow the manufacturer's instructions for resetting the unit if necessary.

Service: 1-800-433-9258; www.dewalt.com