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7. Allow compressor to pump up to blow off pressure.

NOTE: If any unusual noise or vibration is noticed, stop the compressor and refer to the troubleshooting section.

NOTE: The air compressor pump is capable of running continuously. To prolong the air compressor's life, it is recommended to run at high throttle 50-75% of the run time and idle for 25% of the run time

8. Attach hose and accessory.

WARNING: Risk of unsafe operation. Firmly grasp hose in hand when installing or disconnecting to prevent hose whip.

CAUTION: Risk of unsafe operation. Compressed air from the unit may contain water condensation and oil mist. Do not spray unfiltered air at an item that could be damaged by moisture. Some air operated tools or devices may require filtered air. Read the instructions for the air tool or device.

9.Adjust regulator (F) to desired setting. See Regulator under Features.

Shut-down

1.Stop engine, see engine's instruction manual for correct procedure.

NOTE: If finished using compressor, follow Steps 2–6.

2.Turn regulator knob (F) counterclockwise until fully closed. Ensure regulated pressure gauge reads 0 PSI (0 kPa).

3.Remove hose and accessory.

4.Drain the air tank. Ensure air tank pressure gauge reads 0 PSI (0 kPa).

WARNING: Risk of bursting. Drain air tank daily.Water will condense in air tank. If not drained, water will corrode and weaken the air tank causing a risk of air tank rupture.

5.Allow the compressor to cool down.

6.Wipe air compressor clean and store in a safe, non freezing area.

MAINTENANCE

The following procedures must be followed when maintenance or service is performed on the air compressor.

1.Ensure engine ON/OFF switch (C) is in the OFF Position.

2.Disconnect spark plug wire.

3.Drain air tank.

4.Allow air compressor to cool down before starting service NOTE: All compressed air systems contain maintenance parts (e.g. oil, filters, separators) that are periodically replaced. These used parts may contain substances that are regulated and must be disposed of in accordance with local, state, and federal laws and regulations. NOTE: Take note of the positions and locations of parts during disassembly to make reassembly easier.

NOTE: Any service operations not included in this section should be performed by a DEWALT factory service center or a DEWALT authorized service center.

Maintenance Chart

Procedure

Daily

Weekly

Monthly

1 year or

 

 

 

 

200 Hours

 

 

 

 

 

Check safety valve

X

 

 

 

Inspect air filter +

 

X

 

 

Drain air tank

X

 

 

 

 

 

 

 

 

Check pump oil level

X

 

 

 

 

 

 

 

 

Change pump oil**+

 

 

 

X

Oil leak inspection

X

 

 

 

Inspect drive belt

X

 

 

 

Check drive belt tension

 

 

X

 

14

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DeWalt D55273 instruction manual Shut-down, Maintenance Chart, Procedure Daily Weekly Monthly Year or
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D55273 specifications

The DeWalt D55273 is a robust and highly efficient pneumatic air compressor designed to meet the needs of both professionals and DIY enthusiasts. Renowned for its reliability and performance, this model is particularly popular among contractors involved in framing, roofing, and other heavy-duty applications.

One of the standout features of the D55273 is its high-efficiency compressor pump, which delivers an impressive air output while minimizing downtime. The unit boasts a powerful motor that operates at a substantial 4.5 CFM at 90 PSI, allowing it to quickly recharge the tank and maintain consistent pressure for various pneumatic tools. This ensures that users can work continuously without frequent interruptions for recharging.

The D55273 incorporates DeWalt's patented Quiet Technology, making it one of the quieter options in the industry. With a sound level of just 75 dBA, this compressor is ideal for indoor jobs or residential areas where noise levels are a concern. This feature not only enhances user comfort but also reduces the noise pollution that often accompanies pneumatic tools.

Durability is a key characteristic of the D55273. Constructed with high-quality materials, it features a rugged, oil-free pump that requires minimal maintenance and prolongs the life of the compressor. Additionally, the unit is designed with a sturdy frame, making it easy to transport and store without worrying about damage. The integrated handle and rubber grip make it convenient to maneuver on job sites.

Another notable technological advancement in the D55273 is its efficient cooling system. This air compressor is designed with an advanced airflow system that optimizes cooling during operation, reducing the risk of overheating. This capability ensures reliability during extended use, providing peace of mind to users working on demanding projects.

Furthermore, the unit comes equipped with dual quick couplers, allowing for simultaneous connections of two tools, increasing productivity on the job site. The pressure gauges provide accurate readouts, enabling users to easily monitor and adjust the pressure to suit various applications.

Overall, the DeWalt D55273 air compressor combines power, efficiency, and user-friendly features to provide a reliable solution for all pneumatic needs. Whether tackling a large construction project or a small home improvement task, this air compressor delivers the performance and durability professionals demand.
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