Quincy's QMA series of rotary screw compressors offers the reliability and durability you expect in a Quincy product, but at a price you wouldn't expect.

Built in one of the most technologically advanced compressor plants in the world, the QMA features the same direct-drive, large-diameter rotors that set Quincy's entire rotary screw line apart from the competition. This design advantage gives you smooth, efficient operation without the gear sets and drive belts that can eat up valuable input energy and cause maintenance concerns.

Since its airend is inside the receiver tank, the QMA requires fewer external piping connections and therefore less maintenance. Easy serviceability is assured with quick-change separators and convenient access to routine maintenance areas.

The QMA is also valuable in installations where space is precious and exhaust air ducting is a concern. Boasting a modular advantage and vertical draft coolers, the QMA is a compact, low-profile package that fits in virtually all industrial applications.

Add to all this the QMA's ability to cover a wide range of full load operating pressures, and you're looking at a typical example of why Quincy compressors are undeniably the world's finest.

Inside the QMA - Quality features perform quality functions

Standard features

• Large rotors for slow-speed, economical operation and maximum airend life
• Triple-lip shaft seal
• Cast iron construction
• Full voltage, across-the-line starter, mounted and wired (460 volt)
• Factory fill of Quin-Syn® lubricant
• Heavy-duty air inlet filter
• Air discharge check valve
• Air/oil reservoir safety valve
• Control line filter (with auto-dual control)
• High Air Temperature (HAT) shutdown protection
• Partial enclosure for cooling fan, fan motor, and main drive motor
• Auto dual with modulation and percent capacity gauge
• Built to UL, CSA, and NEC standards

Options

• 200/230/575 volt motors
• Reduced voltage starter
• Full cabinet for super low noise level
• NEMA 4 controls
• 50H model offers 150 psig full load

Quality Features Performing Quality Functions

• Easy-To-Read Instrument Panel - includes large, 2-1/2" analog gauges for air discharge pressure and temperature, oil injection temperature, hour meter, and differential pressure (separator and oil filter).
• Patented percent capacity gauge - indicates percent of full load capacity being used at any time. Partial enclosure: for cooling fan, fan motor, and main drive motor is designed to reduce noise, cool the motors, and extend service life.
• Oversized coolers - permit compressor to operate in ambient temperatures up to 110 degree's F.; vertical draft coolers allow easy installation of heat recovery systems.
• Low approach aftercooler - lowers temperature of saturated air; moisture separator and trap remove condensed water.
• Continuous run with modulation control - allows the compressor to match its output to system requirements by throttling the inlet valve.
• Combination of total closure inlet valve and reservoir blowdown - minimizes operation cost in the unloaded condition.
• Lubrication system - seals clearances, lubricates bearings and rotors, and absorbs heat.
• High temperature shutdown system - makes the QMA one of the safest rotary screw compressors on the market.
• Computer-driven automated test equipment - checks static and rotating parts before assembly, assuring close tolerances for maximum airend efficiency.

Are You comparing apples to oranges when it comes to separation systems?

Lubricant carryover can be measured in two ways. The first method is downstream carryover and is measured after the aftercooler and drain trap. The amount of carryover is normally stated in ppm(parts per million) and is typically in the 3 to 5 ppm range. While most compressor manufacturers publish this information, it is somewhat misleading in that it is not a true measure of how much lubricant is actually used or lost during compressor operation.

The second method, lubricant make-up, measures the actual amount of lubricant carried down-stream in the air piping and the amount lost in the drains and filters during operation (typically 3-4 times higher than the downstream carryover measure). This method provides a much more accurate account of lubricant loss.

Don't be misled. Quincy's QMA product line uses a unique, highly efficient separation system that keeps lubricant make-up under 3 ppm and, remarkably, lubricant carryover under 1 ppm.

So be sure you're comparing apples to apples. When we say low lubricant carryover, that's exactly what we mean-by anyones definition.