Installation Guide
Tools Needed:
- Adjustable wrench set
- Level
- Screwdrivers (flat and Phillips)
- Pipe wrench
- Tape measure
- Pressure gauge
Step-by-Step Installation
- Choose Installation Location: Select a clean, dry, well-ventilated area with sufficient clearance for maintenance access and proper airflow.
- Prepare Foundation: Ensure a solid, level concrete foundation that can support the compressor's weight and vibration.
- Uncrate and Position: Carefully remove all shipping materials and position the compressor on the prepared foundation.
- Electrical Connection: Connect to appropriate power supply (see specifications). All electrical work must comply with local codes.
- Air System Connection: Install proper air lines using recommended pipe size. Include shut-off valves and moisture traps.
- Check Oil Level: Verify proper oil level in the compressor crankcase before initial startup.
- Initial Startup: Perform initial startup following the break-in procedure outlined in the manual.
Specifications
| Model Number | QGV-50 |
| Type | Reciprocating Piston Air Compressor |
| Drive Type | Belt Drive |
| Horsepower | 5.0 HP |
| Air Delivery (CFM) | 18.5 CFM at 90 PSI |
| Maximum Pressure | 175 PSI |
| Tank Capacity | 60 Gallon Vertical |
| Power Requirements | 230V Single Phase, 60Hz, 24A |
| Noise Level | 78 dB(A) |
| Dimensions (HxWxD) | 65 x 30 x 30 inches |
| Weight | 420 lbs |
| Pump Speed | 900 RPM |
Warranty Information
- Full Warranty: 2 years parts and labor
- Pump Warranty: 5 years on Quincy QT pump
- Tank Warranty: Lifetime on ASME coded tank
- Additional Coverage: Optional extended warranty available
For warranty service, contact Quincy Compressor Customer Service at 1-800-861-3344 or visit QuincyCompressor.com
Key Features
Quincy QT Pump
The industry-leading QT pump features pressure lubrication, large cast iron construction, and low operating speed for extended life and reliable performance.
ASME Coded Tank
Heavy-duty 60-gallon ASME coded air tank with corrosion-resistant interior coating and safety valve for maximum durability and safety.
Pressure Lubrication System
Full pressure lubrication system ensures proper oil distribution to all critical components, reducing wear and extending compressor life.
Thermal Protection
Built-in thermal overload protection prevents motor damage from overheating during extended operation or high ambient temperatures.
Belt Drive System
Heavy-duty belt drive system allows for optimal pump speed and easy maintenance with standard V-belts.
Low RPM Operation
Operating at only 900 RPM reduces wear, heat generation, and maintenance requirements while increasing overall efficiency.
Control System Features
Pressure Switch
Automatic pressure switch with adjustable cut-in/cut-out settings for precise pressure control
Magnetic Starter
Heavy-duty magnetic starter with overload protection for reliable motor starting and protection
Check Valve
Automatic tank check valve prevents backflow and allows for easy pump startup
Pressure Gauge
Dual gauges display tank pressure and regulated output pressure for precise control
Safety Valve
ASME certified safety valve provides protection against over-pressurization
Drain Valve
Easy-access tank drain valve for regular moisture removal and maintenance
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Compressor won't start | Power issue, pressure switch setting, thermal overload | Check power supply, adjust pressure switch, reset thermal overload |
| Low air pressure output | Air leaks, worn valves, belt slippage | Check for leaks, inspect valves, adjust belt tension |
| Excessive noise/vibration | Loose components, worn bearings, improper mounting | Tighten all fasteners, check bearings, ensure proper foundation |
| Overheating | Dirty cooling fins, low oil, restricted airflow | Clean cooling surfaces, check oil level, ensure proper ventilation |
| Excessive moisture in air | Faulty drain, high humidity, inadequate aftercooling | Check automatic drain, install additional air drying, ensure proper operation |
| Frequent cycling | Air leaks, oversized tools, faulty check valve | Repair leaks, match tools to compressor capacity, replace check valve |
Error Indicators
- Motor hums but won't start: Check voltage, capacitor, or mechanical binding
- Oil in discharge air: Worn piston rings or overfilled oil
- Knocking sound: Loose connecting rods or worn bearings
- High amp draw: Tight pump, low voltage, or mechanical issues
- Pressure switch won't cut out: Faulty switch or leaking check valve
- Slow pressure buildup: Worn valves, leaking gaskets, or belt slippage
Manual Downloads
Current Model Manuals
QGV-50
5HP 60-Gallon Vertical
QGV-75
7.5HP 80-Gallon Vertical
QGS-50
5HP 60-Gallon Stationary
QGP-50
5HP Portable Compressor
Popular Previous Models
QGV-40
4HP 60-Gallon Vertical
QGS-30
3HP 30-Gallon Stationary
QGP-30
3HP Portable Compressor
QR-25
2.5HP Rotary Screw