1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Ingersoll Rand RS18I-A115-TAS-460 Rotary Screw Air Compressor. Please read this manual thoroughly before operating the equipment and retain it for future reference. Proper adherence to these instructions will ensure optimal performance and longevity of your compressor.
The Ingersoll Rand RS18I-A115-TAS-460 is a 25 HP rotary screw air compressor designed for industrial applications, featuring a 120-gallon tank, integrated air dryer, and operating on 460V AC power.
2. Safety Information
WARNING: Failure to follow these safety instructions can result in serious injury or death. Always observe all local and national safety regulations.
- Ensure the compressor is installed and operated by qualified personnel only.
- Always disconnect power before performing any maintenance or service.
- Do not operate the compressor in explosive atmospheres or near flammable materials.
- Wear appropriate personal protective equipment (PPE), including eye protection and hearing protection.
- Never direct compressed air at yourself or others.
- Regularly inspect all hoses, fittings, and electrical connections for damage.
- Ensure adequate ventilation in the compressor operating area.
- The compressor operates at high temperatures; avoid contact with hot surfaces.
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
3. Components and Features
The Ingersoll Rand RS18I-A115-TAS-460 is a robust rotary screw air compressor system. Key components include:
- Rotary Screw Air End: Efficiently compresses air.
- Electric Motor: 25 HP, 460V AC, 3-phase power.
- Air Receiver Tank: 120-gallon capacity for compressed air storage.
- Integrated Air Dryer: Removes moisture from compressed air, improving air quality.
- Control Panel: For monitoring and operating the compressor.
- Emergency Stop Button: For immediate shutdown in critical situations.
- Air Outlet: 1-inch (F)NPT connection for compressed air delivery.

Figure 1: Front view of the Ingersoll Rand RS18I Rotary Screw Air Compressor with integrated air dryer and receiver tank. This image shows the main enclosure, control panel, and the underlying air tank.

Figure 2: Side view of the Ingersoll Rand RS18I Rotary Screw Air Compressor, highlighting the air outlet connection and ventilation grilles.
4. Setup and Installation
Proper installation is critical for the safe and efficient operation of your compressor. Consult a qualified electrician and technician for installation.
4.1 Site Selection
- Install the compressor on a level, solid foundation capable of supporting its weight (approximately 1791 lbs).
- Ensure adequate clearance around the unit for ventilation and maintenance access.
- Locate the compressor in a clean, dry, well-ventilated area, away from heat sources and corrosive vapors.
- Maintain an ambient temperature between 40°F (4°C) and 104°F (40°C).
4.2 Electrical Connection
- The compressor requires a 460V AC, 3-phase electrical supply.
- Ensure the electrical circuit is protected by a suitable circuit breaker (Full Load Amps: 43.0).
- All wiring must comply with local and national electrical codes.
- Verify correct phase rotation before starting the compressor.
4.3 Air Line Connection
- Connect the air outlet (1-inch FPT) to your facility's air distribution system using appropriate piping and fittings.
- Install a shut-off valve close to the compressor for isolation during maintenance.
- Ensure all connections are leak-free.
5. Operating Instructions
5.1 Pre-Start Checklist
- Verify all electrical connections are secure.
- Check the oil level in the compressor.
- Ensure all drain valves are closed.
- Confirm the air outlet valve is open or partially open to prevent deadheading.
- Inspect for any visible damage or loose components.
5.2 Starting the Compressor
- Turn on the main power supply to the compressor.
- Press the START button on the control panel.
- Monitor the control panel for normal operation indicators and pressure build-up.
5.3 Stopping the Compressor
- Press the STOP button on the control panel for a normal shutdown.
- In an emergency, press the red EMERGENCY STOP button. This will immediately cut power to the motor.
- After stopping, close the air outlet valve and drain any accumulated condensate from the tank.
6. Maintenance
Regular maintenance is essential for the longevity and reliable operation of your Ingersoll Rand compressor. Always disconnect power before performing any maintenance.
6.1 Daily Checks
- Check oil level and add if necessary.
- Drain condensate from the air receiver tank and air dryer.
- Inspect for any unusual noises, vibrations, or leaks.
- Clean exterior surfaces and air intake filters if visibly dirty.
6.2 Weekly Checks
- Inspect air filter elements and clean or replace as needed.
- Check drive belt tension and condition (if applicable).
- Verify proper operation of safety valves.
6.3 Scheduled Maintenance
Refer to the compressor's service schedule for detailed intervals on:
- Oil and oil filter replacement.
- Air/oil separator element replacement.
- Air intake filter replacement.
- Motor bearing lubrication.
- Air dryer desiccant replacement (if applicable).
7. Troubleshooting
This section provides solutions to common operational issues. For complex problems, contact authorized service personnel.
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor does not start | No power supply, emergency stop engaged, motor overload. | Check main power, reset emergency stop, check motor overload relay. |
| Low air pressure | Air leaks, clogged air filter, worn air end, pressure setting too low. | Inspect for leaks, clean/replace air filter, contact service, adjust pressure setting. |
| Excessive noise/vibration | Loose components, worn bearings, unbalanced motor/fan. | Tighten fasteners, contact service for inspection of bearings or motor. |
| High discharge temperature | Insufficient ventilation, low oil level, clogged oil cooler, faulty thermostatic valve. | Improve ventilation, check/add oil, clean oil cooler, contact service. |
8. Specifications
| Parameter | Value |
|---|---|
| Model Number | RS18I-A115-TAS-460 |
| Horsepower (HP) | 25.0 hp |
| Input Voltage | 460V AC |
| Phase | 3 |
| Free Air CFM @ Max. Pressure | 106 CFM |
| Maximum Pressure | 118 psi |
| Tank Size | 120 gallons |
| Air Dryer Included | Yes |
| (F)NPT Outlet | 1 inch |
| Full Load Amps | 43.0 A |
| Product Dimensions (L x W x H) | 78.6 x 75.4 x 31.5 inches |
| Item Weight | 1791 Pounds |
9. Warranty and Support
For detailed warranty information, please refer to the warranty card included with your product or visit the official Ingersoll Rand website. Keep your purchase receipt as proof of purchase.
For technical support, service, or genuine replacement parts, please contact your authorized Ingersoll Rand dealer or customer service. Provide your model number (RS18I-A115-TAS-460) and serial number when requesting assistance.
You can find more information and contact details on the Ingersoll Rand official website.