Reliable, Efficient Oil-Free Air

Throughout the textile, food processing, electronics, chemical, medical, and plastics industries, the need for oil-free air is essential. This is why air quality was our top priority in designing the new Quincy QSD Airend. Our state-of-the-art profile in conjunction with an FDA-approved Teflon®-based composite coating ensures the highest quality of compressed air, and the elimination of oil in the Airend.

The Quincy QSD features a redundant shaft seal system to prevent oil migration into the compression chamber. This system includes a primary set of seals on the dry side, a sinuous path seal with oil dam, and an atmospheric oil drain on the bearing side - all of which prevents any oil from entering the compression chamber.

Innovative Efficiencies

The Quincy QSD incorporates a two-stage design that maximizes operation efficiency throughout a full range of pressures. by dividing the work of compression equally between the two stages, the Quincy QSD produces more CFM per horsepower. In addition to being highly efficient, the compressed air produced by the Quincy QSD is cooled after each stage.

In designing the Quincy QSD we eliminated the need for inlet valves. Instead, our patented Quincy lift valve technology does the job by opening the compression chamber as demand drops. This means that during unloaded operation, the Quincy QSD consumes only the power it needs to turn the rotors and gears - because no compression can take place with the lift valve open.

The result is unloaded horsepower as low as 10% of full load power, without sacrificing full load efficiency.

True Blue Reliability

Quincy's patented Triplex bearings add increased efficiencies and reliability. The Quincy QSD uses a Triplex bearing on the thrust side of each Airend, in addition to a single row of roller bearings on both the suction and discharge to support radial loads. While the bearings on most oil-free rotary screw compressors last between 30,000 and 40,000 hours, Quincy's Triplex bearing technology delivers a life expectancy of over 100,000 hours. This is equal to even the most durable fluid-flooded compressor.

At Quincy, this rugged dependability translates into True Blue Reliability again and again.

Solid Performance

Completing the Quincy QSD package, the Quincy Power$ync II controller is one of the most advanced and reliable electronic controllers available. The Power$ync II monitors the compressor and adjusts accordingly to system demands - maintaining peak efficiency around the clock.

Uniquely designed to control the two-stage Quincy QSD, the Power$ync II constantly and efficiently monitors first and second stage discharge pressure and temperature, package discharge pressure and temperature, and bearing lube pressure. Plus, Load/No-Load with Auto Dual works during periods of low or no demand by automatically turning the compressor off - restarting only when demand returns.

The Quincy Power$ync II unloading system provides the lowest unloaded power consumption available. When air system demand is satisfied, the Power$ync II removes the machine's ability to compress air via the patented Quincy lift valves. This dramatically reduces the power required to turn the rotors and results in up to 90% reduction in utilized horsepower.

And, of course, the Power$ync II is easy to use. All display messages are in English with no cryptic codes to reference. And as an added measure of reliability, a fully redundant electro-mechanical control system is included for manual control.

Standard Quality Features Deliver Valuable Benefits

• Asymmetric rotor profile
• Triplex discharge bearings; 100,000 hours of operation
• Redundant shaft sealing system with exclusive buffing air system
• Patented lift valve technology reduces unloaded horsepower to as low as 10% for full load power
• Integrated drive fluid pump
• Standard drive motors with NEMA C-flange for permanent alignment of drive coupling
• 50,75,100 HP packages
• 100 or 125 PSIG operation pressure
• 460 or 575 volts @60hz main motor voltage
• 380/415 volts @50hz main motor voltage
• Full voltage starter, mounted and wired
• Heavy duty steel-base frame
• Heavy duty inlet filter
• Full flow, 3 micron fluid filter
• Quincy Power$ync II controller with manual control backup
• Water-cooled intercooler and aftercooler with moisture separators and traps
• Air discharge check valve
• Pre-piped chemical cleaning ports
• NEMA 4 control enclosure

Options

• Wye-Delta reduced voltage starter for soft starting and reduced current inrush during startup
• TEFC and Premium Efficiency motors for special applications
• NEMA 4 wiring and controls for wet and/or dusty applications
• TEMA-C coolers