Section II - Description
Quincy Compressor
5
• Introduction
• Flow diagram
• Refrigerant dryer
Introduction
General
QOF-2, QOF-3, QOF-5, QOF-7.5 are stationary, single stage, oil-free compressors, driven by
an electric motor.
The compressors are controlled by a pressure switch.
The compressors are enclosed in a sound dampening enclosure and are air cooled.
Available versions:
•
The basic version (QOF) comprises the motor, the compressor element, an air cooled
aftercooler and the regulation and protection components.
• The QOF with dryer is a QOF, completed with an integrated refrigerant dryer.
The basic version (referred to as the floor mounted version (FM)) does not include an air
receiver. An air receiver is available as option.
Available options:
• Air receiver of 30 l (7.93 US gal), 270 l (71.3 US gal) or 500 l (132 US gal). The 30 l
receiver consists of a module with three 10 l (2.64 US gal) receivers. The 30 l receiver
option includes an electronic drain.
• Receiver mounted version (270 l and 500 l): electronic drain on the air receiver
• Floor mounted compressors without refrigerant dryer: water separator on the outlet
• Prefilter mats on the air inlet
• Phase sequence relay (on 3-phase units)
QOF
The control panel comprises a pressure gauge, an hour meter and a start button. The compressor
is controlled by a pressure switch (PS).
The electric components are located in the cubicle behind the front panel door.
A check valve (CV) prevents loss of compressed air when the compressor is stopped. A
temperature switch and a safety valve (SV) protect the compressor element against overheating
and too high pressure respectively. The compressed air is cooled by an air cooler (Ca).
Single phase units are equipped with a vent valve for easy starting.
