Induction System - Quincy Compressor QR-25 Series Instruction Manual

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Induction System

QR-25 Series
52201-105, May 2003
Check Valves
Check valves are designed to prevent back-flow of air pressure in the com-
pressed air system (air flows freely in one direction only). The check valve must
be properly sized for air flow and temperature. Do not rely upon a check
valve to isolate a compressor from a pressurized tank or compressed
air delivery system during maintenance procedures!
Manual Shutoff Valves
Manual shutoff valves block the flow of air pressure in either direction. This
type of valve can be used to isolate a compressor from a pressurized system,
provided the system is equipped with a pressure relief valve capable of being
manually released. The pressure relief valve should be installed between the
manual shutoff valve and the compressor (refer to Fig. 3-2, Typical Drop Leg
& Component Location).
Pressure Relief Valves
Pressure relief valves aid in preventing system failures by relieving system
pressure when compressed air reaches a determined level. They are available
in various pressure settings to accommodate a range of applications. Pressure
relief valves are preset by the manufacturer and under no circumstances
should the setting be changed by anyone other than the manufacturer.
Pressure relief valves must be provided to protect compressed air
systems in accordance with ASME B19 safety standards. Failure to
provide properly sized pressure relief valves may cause property
damage, severe personal injury or even death.
Air Intake
A clean, cool and dry air supply is essential to the satisfactory operation of your
Quincy air compressor. The standard air filter that the compressor is equipped
with when leaving the factory is of sufficient size and design to meet normal
conditions, when properly serviced, in accordance with the maintenance
section of this manual.
If, however, the compressor is to be installed in a location where consider-
able dust, dirt and other contaminants are prevalent, consult your local Quincy
Distributor for advice and optional filters. It is the user's responsibility to
provide adequate filtration for those conditions. Oil bath filters are not to be
used. Warranty will be void if a failure is determined to be caused by
inadequate filtration.
Remote Inlet Filters
Depending on the size of the compressor and the size and construction of the
room in which the unit operates, the air inlet may have to be located outside
of the room. If it is necessary to remotely install the air filter, make the inlet
piping as short and direct as possible. Remotely installed air filters can lead
to vibrations in the inlet piping. These vibrations can be minimized by adding
a pulsation dampener in the inlet piping between the remote inlet filter(s) and
the compressor.
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Quincy Compressor
3501 Wismann Lane, Quincy IL - 62305-3116