Installation Guide
Tools Needed:
- Foundation bolts and anchor kit
- Leveling shims
- Pipe wrenches (appropriate size)
- Torque wrench
- Electrical test equipment
- Air system pressure gauge
Step-by-Step Installation
- Site Preparation: Select a clean, dry, well-ventilated location with adequate space for maintenance access and proper airflow.
- Foundation Requirements: Prepare a solid, level concrete foundation capable of supporting the compressor's weight (approximately 2500 lbs).
- Positioning: Use lifting equipment to position the compressor on the foundation. Do not lift using piping or electrical connections.
- Leveling: Adjust leveling pads or shims to ensure the compressor is perfectly level in all directions.
- Electrical Connection: Connect to appropriate power supply (460V, 3-phase, 60Hz). All electrical work must comply with local codes and be performed by a qualified electrician.
- Air System Connection: Install proper air piping with adequate size and support. Include isolation valves, check valve, and aftercooler if required.
- Drain Connection: Connect condensate drain line to appropriate drainage system following environmental regulations.
- Initial Startup: Perform pre-startup checks, fill lubricant if required, and follow initial startup procedure in manual.
Specifications
| Model Number | R75N |
| Compressor Type | Rotary Screw Air Compressor |
| Motor Power | 75 HP (56 kW) |
| Air Delivery | 315 CFM at 100 PSI (8.9 m³/min at 7 bar) |
| Maximum Pressure | 125 PSI (8.6 bar) |
| Control Type | Microprocessor Control with LCD Display |
| Sound Level | 72 dBA at 1 meter |
| Power Requirements | 460V, 3-phase, 60Hz (other voltages available) |
| Full Load Amps | 90 A |
| Dimensions (LxWxH) | 85" x 42" x 65" (216 x 107 x 165 cm) |
| Weight | 2500 lbs (1134 kg) |
| Tank Size | 120 Gallon Vertical (Optional) |
| Oil Capacity | 6 Gallons (22.7 liters) |
Warranty Information
- Standard Warranty: 2 years parts and labor
- Air End Warranty: 5 years on rotary screw air end
- Extended Coverage: Optional extended warranty packages available
For warranty service, contact Ingersoll Rand Customer Service at 1-800-847-4041 or visit ingersollrand.com
Key Features
NEXT GENERATION ROTARY SCREW AIR END
Advanced asymmetric screw profile design delivers superior efficiency with reduced energy consumption and enhanced reliability.
INTELLISYS MICROPROCESSOR CONTROL
Advanced control system monitors and optimizes compressor performance, provides diagnostic information, and enables remote monitoring capabilities.
EFFICIENT COOLING SYSTEM
Large surface area cooler with optimized airflow design maintains proper operating temperatures even in high ambient conditions.
QUIET OPERATION
Acoustic enclosure and vibration isolation system reduces noise levels to 72 dBA for improved workplace environment.
ENERGY SAVING MODE
Automatic shutdown during no-load conditions and intelligent load/unload control reduces energy consumption by up to 30%.
EASY MAINTENANCE ACCESS
Large access panels and strategically placed service points simplify routine maintenance and reduce downtime.
Control System Features
PRESSURE CONTROL
Precise pressure regulation maintains consistent system pressure within ±2 PSI
DIAGNOSTIC DISPLAY
Real-time monitoring of operating parameters and fault conditions
PROTECTION SYSTEMS
Multiple safety shutdowns for high temperature, low oil, and electrical faults
DATA LOGGING
Stores operating history for maintenance scheduling and performance analysis
COMMUNICATION PORTS
RS-485 and Ethernet connectivity for remote monitoring and control
AUTOMATIC DRAIN
Programmable condensate drain removes moisture from air system
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, emergency stop activated, control fault | Check power supply, reset emergency stop, check control system |
| Low air pressure | Air leaks, clogged filter, system demand exceeds capacity | Check for leaks, replace air filter, verify system requirements |
| High operating temperature | Dirty cooler, low oil level, ambient temperature too high | Clean cooler fins, check oil level, improve ventilation |
| Excessive vibration | Foundation issues, loose mounting bolts, worn couplings | Check foundation and leveling, tighten bolts, inspect couplings |
| Oil in air system | Worn separator element, overfilled oil, high operating pressure | Replace separator, check oil level, verify operating pressure |
| Frequent cycling | Air leaks, improper pressure settings, small receiver tank | Locate and repair leaks, adjust pressure settings, check tank size |
Common Error Codes
- E01: High Temperature - Check cooling system and oil level
- E02: Low Oil Pressure - Check oil level and pressure switch
- E03: Motor Overload - Check electrical connections and load
- E04: Phase Loss/Imbalance - Check power supply and connections
- E05: High Pressure - Check pressure switch and relief valve
- E06: Sensor Fault - Check temperature and pressure sensors
- E07: Communication Error - Check control wiring and connections
Manual Downloads
R75N Series Manuals
R75N5
75HP Base Model Compressor
R75N7
75HP with Dryer Package
R75NV
75HP Vertical Tank Model
R75NS
75HP Sound Enclosure Model
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