Dewalt D55155 Manual

The Dewalt D55155 is a portable electric air compressor designed for heavy-duty applications. It features a powerful motor, a large tank capacity, and is ideal for powering pneumatic tools, inflating tires, and other tasks requiring compressed air. 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. Safety Information 10. Troubleshooting

Features at a Glance

Key components: 4.5-gallon tank, 1.6 HP motor, dual couplers, and a durable design for portability.

FeatureDescription
4.5-gallon tankProvides ample air supply for various tasks
1.6 HP motorDelivers high performance for demanding applications
Dual couplersAllows for two users to operate simultaneously
Portable designEasy to transport to job sites
Oil-free pumpRequires less maintenance and provides clean air

Installation

Unpack and inspect contents. Place on a stable surface.

  1. Connect the air hose: Ensure the hose is securely attached to the coupler.
  2. Plug into AC power: Use a grounded outlet to avoid electrical hazards.
  3. Check for leaks: Turn on the compressor and inspect connections.

WARNING! Ensure all connections are secure before operation.

First-Time Setup

Power on the compressor; follow the setup instructions.

  1. Set the pressure: Adjust the regulator to the desired PSI.
  2. Test the compressor: Run it briefly to ensure proper operation.

CAUTION! Ensure stable surface; avoid operating in wet conditions.

Specifications

Controls and Settings

Access controls on the front panel: Pressure regulator, on/off switch, and quick couplers.

Pressure Regulator: Adjusts the output pressure for different tools.

Connecting Devices

Connect pneumatic tools using the quick couplers.

  1. Turn off the compressor before connecting tools.
  2. Ensure the tool is compatible with the compressor's output pressure.

Tip: Always check for leaks after connecting devices.

Operating the Compressor

Follow these steps to operate the compressor safely.

  1. Turn on the compressor using the on/off switch.
  2. Monitor the pressure gauge during operation.
  3. Turn off the compressor when not in use.

WARNING! Do not exceed the maximum pressure rating.

Maintenance

Regular maintenance ensures optimal performance.

  1. Check the oil level regularly (if applicable).
  2. Drain the tank to remove moisture after each use.
  3. Inspect hoses and connections for wear.

Safety Information

Always follow safety guidelines when operating the compressor.

Troubleshooting

SymptomPossible CauseCorrective Action
Compressor won't startNo powerCheck power source and connections.
Low pressureLeak in hoseInspect and replace damaged hoses.
Noisy operationLoose partsTighten screws and inspect components.
OverheatingBlocked air intakeClear any obstructions around the compressor.

Reset: Refer to the manual for reset procedures if available.

Dewalt D55155 Manual © - All Rights Reserved 2026