Product Manual

Industrial / Air Master Series Quincy Compressor
50161-105, March 2008 19 3501 Wismann Lane, Quincy Ill. - 62305-3116
Induction System
Air Intake
A clean, cool and dry air supply is essential to the satisfactory operation of your
Quincy QT or PLT Series 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 considerable
dust, dirt and other contaminants are prevalent, consult your local Quincy
distributor for advice and optional filters. A condensate trap must be installed
as close as possible to the inlet filter if, as a result of installation or environmen-
tal conditions, there is any risk of moisture forming in the inlet piping. 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.
If the inlet is routed to outside atmosphere, the inlet piping should be
equipped with a hooded air filter and designed to prevent condensate, water or
snow from being injested into the compressor.
All inlet piping should be at least the same size (or larger) in diameter as the
inlet connection to the compressor. For every 10 feet of inlet piping or every 90°
bend, increase the inlet piping diameter by one pipe size. The inlet piping must
be thoroughly clean inside. Remove all weld slag, rust or dirt. Galvanized pipe
with threaded or flanged fittings is preferred.
Never locate the compressor air inlet system where toxic, volatile
or corrosive vapors, air temperatures exceeding 100°F, water, or
extremely dirty air could be ingested. These types of atmospheres
could adversely affect the performance of the compressor system.
Compressed Air Discharge System
The discharge piping should be of the same diameter as the compressor
discharge connection, or sized so that the pressure drop at any point in the
system does not exceed 10% of the air receiver pressure. Install auxiliary air
receivers near heavy loads or at the far end of a long system. This will insure
sufficient pressure if the use is intermittent, or sudden large demands are
placed on the system.
Discharge piping should slope to a drop leg (refer to Fig. 3-8, Typical Drop
Leg & Component Location) or moisture trap to provide a collection point
CAUTION !