Installation Guide
Tools Needed:
- Adjustable wrenches (set)
- Torque wrench
- Screwdrivers (flat and Phillips)
- Pipe thread sealant
- Level
- Air pressure gauge
- Electrical multimeter
Step-by-Step Installation
- Select Installation Location: Choose a clean, dry, well-ventilated area with sufficient clearance for maintenance access and proper airflow.
- Foundation Preparation: Install on a solid, level concrete foundation capable of supporting the compressor's weight and vibration.
- Uncrating and Positioning: Remove all shipping materials and position the compressor using appropriate lifting equipment.
- Electrical Connection: Connect to proper power supply according to nameplate specifications. Install disconnect switch within sight of compressor.
- Air System Piping: Install air discharge piping with proper slope for condensation drainage. Use pipe thread sealant on all connections.
- Intake Air System: Connect intake filter assembly and ensure clean, cool air supply free from contaminants.
- Lubrication System: Check oil level and fill with recommended compressor oil to proper level.
- Pressure Settings: Adjust pressure switch cut-in and cut-out settings according to application requirements.
- Initial Startup: Perform pre-startup checks, then run compressor through complete cycle to verify proper operation.
Specifications
| Model Series | QT & QSI Series |
| Type | Rotary Screw Air Compressor |
| Configuration | Stationary Industrial |
| Capacity Range | 5 HP to 350 HP |
| Pressure Range | 80 PSI to 200 PSI |
| Air Delivery (CFM) | 18 to 1500 CFM |
| Control Type | Microprocessor Control with LCD Display |
| Motor Type | TEFC Premium Efficiency |
| Power Requirements | 208-230/460V, 3 Phase, 60Hz |
| Sound Level | 70-75 dBA @ 1 Meter |
| Dimensions (Typical 50HP) | 72" x 36" x 55" |
| Weight (Typical 50HP) | 1800 lbs |
| Cooling System | Air Cooled / Water Cooled Options |
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 Quincy Compressor Customer Service at 1-800-874-0555 or visit QuincyCompressor.com
Key Features
Quincy QSI Rotary Screw Design
Advanced asymmetric screw profile provides maximum efficiency with reduced energy consumption and extended component life.
Smart Control System
Microprocessor-based control with intuitive interface provides precise pressure control, system monitoring, and diagnostic capabilities.
Energy Saving Technology
Variable speed drive options and efficient motor designs reduce energy consumption by up to 35% compared to conventional compressors.
Advanced Filtration System
Multi-stage filtration removes contaminants, oil, and moisture to deliver clean, dry compressed air for sensitive applications.
Quiet Operation
Sound-attenuated enclosures and vibration isolation reduce noise levels for improved workplace environment.
Remote Monitoring
Optional connectivity for remote monitoring, diagnostics, and maintenance scheduling via web or mobile applications.
Control System Features
Auto Dual Control
Automatically switches between load/unload and modulation control for optimal efficiency
Advanced Diagnostics
Real-time monitoring of system parameters with fault logging and predictive maintenance alerts
Multi-Compressor Control
Network capability for controlling multiple compressors as a system for maximum efficiency
Data Logging
Comprehensive data recording for energy analysis, maintenance planning, and performance tracking
Customizable Profiles
User-programmable operating parameters for specific application requirements
Safety Shutdowns
Multiple safety interlocks and automatic shutdowns for protection against abnormal conditions
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, pressure switch fault, thermal overload | Check power supply, verify pressure switch settings, reset overloads |
| Low air pressure output | Intake filter clogged, air leaks, worn components | Clean/replace intake filter, check for system leaks, inspect valves |
| Excessive noise/vibration | Foundation issues, loose components, bearing wear | Check foundation bolts, tighten mounting hardware, inspect bearings |
| High operating temperature | Cooling system blockage, low oil level, ambient temperature | Clean cooling surfaces, check oil level, improve ventilation |
| Excessive oil consumption | Oil separator failure, internal leaks, wrong oil type | Replace separator element, check for internal leaks, use correct oil |
| Frequent cycling | Air leaks, undersized receiver, incorrect pressure settings | Locate and repair leaks, check receiver size, adjust pressure switch |
Error Codes
- E01: High temperature shutdown - Check cooling system and oil level
- E02: High pressure shutdown - Verify pressure switch settings and relief valve
- E03: Motor overload - Check electrical connections and load conditions
- E04: Low oil pressure - Inspect oil pump and filter
- E05: Phase loss/sequence error - Verify three-phase power supply
- E06: Sensor fault - Check temperature and pressure sensors
- E07: Communication error - Inspect control wiring and connections
Manual Downloads
Current Model Manuals
QSI-50
50HP Rotary Screw Compressor
QSI-75
75HP Variable Speed Drive
QSI-100
100HP Water Cooled
QT-25
25HP Tank Mounted
Popular Previous Models
QR-25
25HP Reciprocating
QGS-30
30HP Gas Driven
QSI-40
40HP Previous Generation
QT-15
15HP Portable