Industrial Series
Quincy Compressor
50263-106, October 2004
10
3501 Wisman Lane, Quincy IL - 62305-3116
tinue to run until manually shut off). The pilot
unloader valve allows the compressor to run in an
"unloaded" or "loaded" mode. In the "loaded" mode
the compressor delivers compressed air to the tank
for storage until needed. In the "unloaded" mode the
compressor continues to run but the compressed air
is immediately vented to atmosphere instead of going
to the tank. Pilot unloader valves are preset at the
factory and should only be modified by a qualified
technician.
When starting an engine powered unit, flip the
toggle on top of the pilot valve to the upright position.
This will unload the compressor and allow the engine
to start easier. When the engine has run for a few
minutes, flip the toggle back to its original position.
Air Intake
A clean, cool, dry, non-pressurized air supply is
essential to the satisfactory operation of your Quincy
compressor. A condensate trap must be installed as
close as possible to the inlet filter if, as a result of
installation or environmental conditions, there is
any risk of moisture forming in the inlet piping.
WARNING !
Never locate the compressor where toxic, volatile or
corrosive vapors, air temperatures exceeding 104°F,
water, or extremely dirty air could be ingested. The
compressor could be damaged by these atmo-
spheres and result in injury or death.
When using the compressor for spray painting,
isolate the compressor as far away from the work
area as practical, employing extra air hose rather
than an extension cord.
Warranty will be void if a failure is determined to
be caused by dust, dirt or other contaminants.
Compressed Air Discharge System
All parts of the discharge piping should fit so as not
to create any stress between the piping and connec-
tions.
WARNING !
Discharge piping can exceed 350°F when compres-
sor is operating. Do not use plastic pipe or lead tin
soldered joints for a discharge line.
Pressure Vessels
Air receiver tanks and other pressure containing
vessels must be equipped with a properly sized pres-
sure relief valve, pressure gauge, and a tank drain.
WARNING!
Oil and moisture residue must be drained d from the
air receiver daily or after each use. Accumulations
of oil residue in the receiver can be ignited by
embers of carbon created by the heat of compres-
sion, causing an explosion, damage to property and
injury to personnel.
WARNING !
Follow ASME code for air receiver tanks and other
pressure containing vessels. Pressure vessels must
not be modified, welded on, or repaired. Such ac-
tions may cause property damage, severe injury, or
even death.
Manual Tank Drain Valve Operation
The manual tank drain valve on portable compres-
sors and some stationary compressors is located on
the underside of the air tank. Portable compressors
can be tilted in the direction of the drain to allow
removal of tank moisture.
Some tanks use an internal drain tube
(see Fig. 10)
to drain the moisture. Tank pressure is required to
force moisture out of the tank through the drain tube.
Safe removal of tank moisture from either type of
tank is dependent upon an internal tank pressure of
20 to 30 PSIG. Higher tank pressures are dangerous
and could cause serious injury!
WARNING!
Do not open a manual tank drain valve on any air
tank containing more than 30 PSIG of air pressure!
WARNING!
Never attempt to relieve an air tank by removing a
pipe plug or any other system component!
Pix 1224
Fig. 10 Internal Drain Tube
30 PSIG
Summary of Contents for QTS Series
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