1. Product Overview
The VIAIR Dual Stealth Black 444C Onboard Air System is a pre-packaged compressed air solution designed for various pneumatic applications. This system includes two 444C compressors, a 2.5-gallon air tank, an inline pressure regulator, and all necessary components for installation.
Key Features:
- 2.5-gallon 200 PSI VIAIR air tank
- (2) 444C VIAIR compressors with thermal overload protectors
- 30ft. Coil hose with quick connects
- Tire inflation gun with 200 psi gauge
- 0-220 PSI pressure regulator
Image 1.1: The VIAIR Dual Stealth Black 444C Onboard Air System, showcasing the dual compressors, air tank, and included accessories.
WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Handle with care and follow all safety guidelines.
2. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your VIAIR Onboard Air System. If you are not confident in performing the installation yourself, it is recommended to seek professional assistance.
2.1 Safety Precautions
- Always disconnect the vehicle's battery before beginning any electrical work.
- Wear appropriate personal protective equipment (PPE), including eye protection.
- Ensure the installation area is well-ventilated.
- Never exceed the maximum operating pressure of 200 PSI.
2.2 Mounting Components
Select a secure, dry, and well-ventilated location for mounting the air tank and compressors. Avoid areas exposed to excessive heat, moisture, or road debris. The compressors should be mounted in an upright position to ensure proper cooling and operation.
- Air Tank: Securely fasten the 2.5-gallon air tank using appropriate hardware. Ensure it is protected from potential impact.
- Compressors: Mount the two 444C compressors to a stable surface, minimizing vibration. Ensure adequate airflow around the compressors for cooling.
2.3 Electrical Wiring
Connect the compressors to the vehicle's electrical system. Use heavy-gauge wiring suitable for the 40 Amp draw of the system. Install an inline fuse or circuit breaker close to the battery for protection.
- Connect the positive (+) wire from the compressors to a fused 12V power source.
- Connect the negative (-) wire from the compressors to a good chassis ground.
- Wire the pressure switch to control the compressors, ensuring they turn on when tank pressure drops below a set point and off when it reaches the maximum.
2.4 Air Line Connections
Connect all air lines using appropriate fittings. Ensure all connections are tight and sealed to prevent air leaks.
- Connect the output of both compressors to the air tank.
- Install the pressure regulator on the output side of the air tank, if desired, to control output pressure.
- Connect the 30ft coil hose to a quick-connect fitting on the system.
- Apply thread sealant to all NPT fittings to ensure an airtight seal.
3. Operation Guide
This section outlines the basic steps for operating your VIAIR Dual Stealth Black 444C Onboard Air System for tire inflation and other pneumatic tasks.
3.1 Initial Start-Up
- After installation, reconnect the vehicle's battery.
- Turn on the system's power switch (if installed). The compressors should begin to fill the air tank until the pressure switch reaches its cut-off pressure (up to 200 PSI).
- Listen for any air leaks and check all connections.
3.2 Tire Inflation
- Connect the tire inflation gun to the coil hose.
- Attach the inflation gun's chuck to the tire valve stem.
- Monitor the pressure on the 200 PSI gauge integrated into the inflation gun.
- Inflate the tire to the desired pressure. Release the trigger to stop airflow.
- Disconnect the inflation gun from the tire valve and then from the coil hose.
3.3 Pressure Regulation
The included 0-220 PSI pressure regulator allows you to control the output air pressure for specific tools or applications. Adjust the regulator knob to set the desired working pressure.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your VIAIR Onboard Air System.
4.1 Draining Moisture from Air Tank
Moisture can accumulate inside the air tank, leading to corrosion and reduced performance. It is essential to drain the tank regularly, especially in humid environments.
- With the system depressurized, open the drain cock at the bottom of the air tank.
- Allow all accumulated moisture to drain completely.
- Close the drain cock securely.
4.2 Checking Connections and Fittings
Periodically inspect all air line connections, electrical wiring, and mounting hardware for tightness and signs of wear or damage.
- Check for air leaks using soapy water on all fittings and connections. Bubbles indicate a leak.
- Ensure all electrical connections are secure and free from corrosion.
- Verify that the compressors and air tank are still securely mounted.
4.3 Compressor Air Filters
Inspect and clean or replace the air filters on the compressors as needed. Clogged filters can reduce compressor efficiency and lifespan.
5. Troubleshooting
This section provides solutions to common issues you might encounter with your VIAIR Dual Stealth Black 444C Onboard Air System.
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressors do not turn on. | No power, blown fuse, faulty pressure switch, loose wiring. | Check battery connections, inspect inline fuse/circuit breaker, verify pressure switch wiring, ensure all electrical connections are secure. |
| Air leaks from fittings. | Loose connections, insufficient thread sealant, damaged O-rings/seals. | Tighten all fittings. Disassemble, apply appropriate thread sealant (e.g., PTFE tape or liquid sealant), and reassemble. Replace any damaged seals. |
| Low air pressure or slow inflation. | Air leaks, clogged air filter, low voltage, worn compressor components. | Check for air leaks (see above). Clean or replace air filters. Verify proper 12V power supply to compressors. If issues persist, contact support. |
| Compressor stops unexpectedly. | Thermal overload protection activated. | Allow the compressor to cool down for 20-30 minutes. Ensure adequate ventilation around the compressor. Reduce duty cycle if operating continuously for extended periods. |
6. Technical Specifications
Detailed specifications for the VIAIR Dual Stealth Black 444C Onboard Air System.
| Specification | Value |
|---|---|
| Brand | VIAIR |
| Model Name | Dual Stealth Black 444C Onboard Air System |
| Part Number | 20020 |
| Voltage | 12 Volts |
| Maximum Operating Pressure | 200 PSI |
| Air Flow Capacity (CFM) | 3.53 CFM |
| Maximum Power | 3.53 Horsepower |
| Tank Volume | 2.5 Gallons |
| Hose Length | 30 Feet |
| Noise Level | 69 Decibels |
| Item Weight | 53 Pounds |
| Product Dimensions | 27 x 23 x 11.5 inches |
| Power Source | Battery Powered |
| UPC | 818114002397 |
7. Warranty and Support
7.1 Product Warranty
The VIAIR Dual Stealth Black 444C Onboard Air System is covered by a 1 Year Manufacturer Defect Warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
7.2 Customer Support
For technical assistance, warranty claims, or replacement parts, please contact VIAIR customer support. Refer to the official VIAIR website or your purchase documentation for the most current contact information.
