Installation Guide
Tools Needed:
- Torque wrench set
- Level
- Screwdrivers (flat and Phillips)
- Pipe wrenches
- Electrical multimeter
- Hoist or forklift
Step-by-Step Installation
- Site Preparation: Select a location with proper ventilation, solid concrete foundation, and adequate clearance for maintenance access.
- Foundation Requirements: Ensure minimum 6-inch reinforced concrete foundation capable of supporting 4500 kg.
- Uncrating and Positioning: Remove all shipping materials and position compressor using appropriate lifting equipment.
- Electrical Connection: Connect to dedicated 480V, 3-phase, 60Hz power supply with proper circuit protection. All connections must be made by licensed electrician.
- Air System Connection: Install proper air piping with minimum 3-inch diameter, including aftercooler, moisture separator, and receiver tank.
- Cooling System Setup: Connect to adequate cooling water supply or install air-cooled system as specified.
- Ventilation Requirements: Ensure minimum 1000 CFM ventilation for proper heat dissipation.
- Initial Startup Procedure: Perform pre-start checks, lubricate as required, and follow initial run-in procedure.
Specifications
| Model Series | SULLAIR 375-200 |
| Type | Rotary Screw Air Compressor |
| Configuration | Stationary Industrial |
| Motor Power | 375 HP (280 kW) |
| Air Delivery | 2000 CFM at 100 PSIG |
| Operating Pressure | 100-175 PSIG (7-12 Bar) |
| Noise Level | 75 dB(A) at 1 meter |
| Control System | Microprocessor Control with Touch Display |
| Power Requirements | 480V, 3-phase, 60Hz, 400A |
| Dimensions (LxWxH) | 300 x 150 x 200 cm |
| Weight | 4500 kg |
| Oil Capacity | 120 Liters |
| Cooling Method | Water-cooled or Air-cooled options |
Warranty Information
- Full Warranty: 2 years parts and labor
- Air End Warranty: 5 years on rotary screw element
- Motor Warranty: 3 years on main drive motor
- Extended Coverage: Optional service agreements available
For warranty service, contact Sullair Customer Service at 1-800-827-2525 or visit Sullair.com
Key Features
DuraCore® Rotary Screw Element
Sullair's proprietary asymmetric screw profile delivers maximum efficiency with minimal wear, providing consistent air delivery over the compressor's lifetime.
Intellisys® Controller
Advanced microprocessor control system optimizes performance, monitors system health, and provides detailed diagnostics and maintenance scheduling.
Energy Efficient Design
Variable speed drive option reduces energy consumption by matching motor speed to air demand, achieving up to 35% energy savings.
Advanced Cooling System
Optimized cooling circuit maintains optimal operating temperatures, extending component life and ensuring consistent performance.
Sound Reduction Package
Acoustic enclosure and vibration isolation reduce noise levels to 75 dB(A), creating a safer and more comfortable working environment.
Remote Monitoring
Connectivity options allow for remote monitoring, control, and diagnostics via computer or mobile devices.
Operating Modes
Load/Unload
Traditional control mode for constant speed operation with automatic unloading during low demand
Variable Speed
Adjusts motor speed to match air demand precisely, maximizing energy efficiency
Dual Control
Combines load/unload and variable speed for optimal performance across varying demand patterns
Network Control
Multiple compressors work together in a coordinated system for large industrial applications
Standby Mode
Reduces energy consumption during periods of no demand while maintaining readiness
Maintenance Mode
Special operating mode for service procedures and system testing
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, safety interlock, controller fault | Check power supply, verify safety switches, reset controller |
| Low air pressure | Air leaks, clogged filters, worn elements | Check for leaks, replace filters, inspect screw elements |
| High operating temperature | Cooling system issue, dirty cooler, low oil | Check coolant flow, clean cooler, verify oil level |
| Excessive vibration | Misalignment, worn bearings, loose mounts | Check alignment, inspect bearings, tighten mounts |
| High energy consumption | Dirty filters, air leaks, incorrect pressure settings | Clean/replace filters, fix leaks, adjust pressure settings |
| Oil in air system | Worn separator, overfilled oil, failed check valve | Replace separator, adjust oil level, check valves |
| Controller alarms | Sensor faults, system faults, maintenance required | Check sensor readings, review fault log, perform maintenance |
Common Error Codes
- E01: High temperature shutdown - Check cooling system
- E02: High pressure shutdown - Verify pressure settings
- E03: Motor overload - Check electrical connections
- E04: Low oil pressure - Verify oil level and pump
- E05: Phase loss or imbalance - Check power supply
- E06: Sensor fault - Check temperature/pressure sensors
- E07: Communication error - Check controller connections
- E08: Maintenance required - Perform scheduled maintenance
Manual Downloads
375 Series Manuals
SULLAIR 375-200
375HP 2000CFM Standard
SULLAIR 375-200VSD
375HP Variable Speed Drive
SULLAIR 375-175
375HP 1750CFM High Pressure
SULLAIR 375-225
375HP 2250CFM High Flow
Related Models
SULLAIR 250-125
250HP 1250CFM Compressor
SULLAIR 500-250
500HP 2500CFM Compressor
SULLAIR 750-400
750HP 4000CFM Compressor
SULLAIR 1000-500
1000HP 5000CFM Compressor
Accessory Manuals
Dryer System
Refrigerated Air Dryer Manual
Filtration System
3-Stage Filtration Manual
Control System
Intellisys Controller Manual
Maintenance Kit
Service and Maintenance Guide