1. Introduction
This manual provides detailed instructions for the safe and efficient use, setup, operation, and maintenance of your Airgoo AG-326 Airbrush Compressor. Please read this manual thoroughly before operating the compressor to ensure proper function and longevity of the unit. This compressor is designed for various applications including airbrushing, model painting, hobby crafts, food decoration, tattoos, and graphics.
2. Safety Instructions
- Always ensure the compressor is placed on a stable, level surface.
- Do not operate the compressor in wet or damp conditions.
- Ensure the power supply matches the voltage requirements specified on the unit (220-240V / 50Hz).
- Keep children and pets away from the compressor during operation.
- Never attempt to modify the compressor or its components.
- Always disconnect the power cord before performing any maintenance or cleaning.
- Do not block the ventilation openings. The dual cooling fans require clear airflow for optimal performance.
- The compressor can become warm during extended use. Avoid touching hot surfaces.
- Regularly drain moisture from the air tank to prevent corrosion and ensure clean airflow.
3. Package Contents
Verify that all items are present in the package:
- 1x Airgoo AG-326 Airbrush Compressor with 3-liter Air Tank
- 1x Output Pressure Regulator with Filter and Manometer
- 1x Power Cable (1.9 m length)
- 1x Instruction Manual

Image 3.1: The Airgoo AG-326 compressor as received in its protective packaging.

Image 3.2: The retail packaging for the Airgoo AG-326 airbrush compressor, displaying key features and specifications.
4. Product Features
The Airgoo AG-326 Airbrush Compressor is engineered for reliable and consistent performance:
- Dual Cooling Fans: Equipped with two internal cooling fans to facilitate continuous operation over extended periods without overheating.
- 3-Liter Air Tank: A 3.0L pressure vessel ensures a more constant and pulsation-free airflow, allowing the compressor to cycle on and off, reducing wear and noise.
- High Pressure Output: Achieves a higher pressure range with automatic operation from 3.5 bar (42.5 PSI) and shut-off at 4.5 bar.
- Precision Manometer: Features a high-precision manometer with an accuracy of ± 0.2 bar - 0.10 bar for accurate pressure monitoring.
- Integrated Regulator and Moisture Trap: Includes an output pressure regulator for adjustable airflow and a water separator filter to ensure dry, clean air delivery to your airbrush.
- Quiet Operation: Operates at approximately 47 dB, making it suitable for home and hobby use, even at night.
- Thermal Protection: Built-in thermal protection and a safety/drain valve enhance operational safety.
- Compact and Portable: Lightweight design (6.00 Kgs) for easy portability.

Image 4.1: Detail of the power switch and motor housing, highlighting the robust construction.

Image 4.2: An internal diagram illustrating the dual fan cooling system, designed for extended continuous operation.
5. Setup
- Unpack the Compressor: Carefully remove all components from the packaging. Inspect for any shipping damage.
- Position the Compressor: Place the compressor on a firm, level, and dry surface. Ensure adequate ventilation around the unit.
- Attach the Regulator: Screw the output pressure regulator with the integrated filter and manometer onto the air outlet port of the compressor. Ensure it is hand-tightened securely to prevent air leaks.
- Connect Airbrush Hose: Connect your airbrush hose to the G 1/8 screw air connection on the regulator.
- Connect Power: Plug the power cable into a grounded electrical outlet (220-240V / 50Hz).

Image 5.1: The pressure regulator and manometer assembly, showing the adjustment knob and pressure gauge.
6. Operating Instructions
- Power On: Flip the power switch to the 'ON' position. The compressor will start to fill the 3-liter air tank. It will automatically shut off once the pressure reaches 4.5 bar.
- Adjust Pressure: The pressure regulator allows you to adjust the output air pressure. To adjust, pull up the knob, turn it clockwise to increase pressure or counter-clockwise to decrease pressure, then push the knob down to lock the setting. Monitor the manometer for the desired pressure.
- Begin Airbrushing: Once the desired pressure is set and the tank is full, you can begin your airbrushing task. The compressor will automatically restart when the tank pressure drops to 3.5 bar and shut off again at 4.5 bar, maintaining a consistent airflow.
- Power Off: After use, turn off the compressor by flipping the power switch to the 'OFF' position.
- Depressurize and Drain: Before storing, ensure the air tank is depressurized by briefly opening the airbrush trigger or using the drain valve. Always drain any accumulated moisture from the tank using the drain valve located at the bottom of the tank.
7. Maintenance
- Daily: After each use, drain the moisture from the air tank. This prevents rust and ensures clean air.
- Weekly/Monthly: Check the air filter on the regulator for any debris or discoloration. Clean or replace if necessary to maintain optimal airflow and prevent contamination.
- Regular Cleaning: Wipe down the exterior of the compressor with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the compressor in a dry, dust-free environment.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor does not turn on | No power supply; Power switch off; Thermal overload activated | Check power connection; Turn on power switch; Allow compressor to cool down |
| Low or inconsistent air pressure | Regulator not set correctly; Air leaks in connections; Clogged air filter | Adjust pressure regulator; Check all connections for tightness; Clean or replace air filter |
| Excessive moisture in air output | Moisture trap full; Tank not drained regularly | Drain moisture trap; Drain air tank after each use |
| Compressor runs continuously | Air leak in tank or connections; Pressure switch malfunction | Check for leaks; Contact customer support if issue persists |
| Unusual noise or vibration | Loose components; Compressor on uneven surface | Check for loose parts and tighten; Place on a stable, level surface |
9. Specifications
| Specification | Value |
|---|---|
| Model Number | AG-326 |
| Voltage | 220-240 V / 50 Hz |
| Power | 0.123 kW (1/6 HP) |
| Air Tank Capacity | 3 Liters |
| Max Pressure (OFF) | 4.5 Bar |
| Auto ON Pressure | 3.5 Bar (42.5 PSI) |
| Adjustable Pressure Range | 0 Bar to 4.50 Bar |
| Airflow Capacity | 20-23 Liters per minute (without load) |
| Noise Level | Approximately 47 dB (operating), 60 dB / 1m (rated) |
| Air Connection | G 1/8 screw |
| Speed | 1450/1700 r.p.m. |
| Weight | 6.00 Kgs |
| Cable Length | 1.9 m |
| Material | Metal |
| Recommended Use | Airbrushing |
10. Warranty and Support
Airgoo products are manufactured to high-quality standards. For warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official Airgoo website. Keep your purchase receipt as proof of purchase for any warranty claims.