Compressor Discharge System, Functional Description - Sullair E900H User Manual

SECTION 2
2.5 COMPRESSOR DISCHARGE
SYSTEM, FUNCTIONAL
DESCRIPTION
Refer to Figure 2-3. The Sullair compressor unit
discharges compressed air/fluid mixture into the
receiver tank.
T
HE RECEIVER TANK HAS THREE FUNCTIONS
1. It acts as a primary fluid separator.
2. Serves as the compressor fluid storage sump.
3. Houses the final fluid separator.
The compressed air/fluid mixture enters the receiver
tank and is directed against the tank side wall. By
change of direction and reduction of velocity, large
droplets of fluid separate and fall to the bottom of the
receiver tank. The fractional percentage of fluid
remaining in the compressed air collects on the surface
of the final separator element as the compressed air
flows through the separator. As more and more fluid
collects on the element's surface, the fluid descends to
the bottom of the separator. A return line (or scavenge
tube) leads from the bottom of the separator element to
the inlet region of the compressor unit. Fluid collecting
on the bottom of the separator element is returned to
the compressor by the pressure difference between the
area surrounding the separator element and the
compressor inlet. An orifice (protected by a strainer) is
included in this return line to help assure proper flow.
The receiver tank is code rated. A minimum
pressure/ check valve, located downstream from the
separator, helps
pressure during all conditions. This pressure is
necessary for proper air/fluid separation and proper
fluid circulation.
A minimum pressure/check valve at the outlet of the
:
receiver is installed to prevent compressed air in the
service line from bleeding back into the receiver on
shutdown when the compressor is being run in
parallel with other compressors tied to a large air
system.
Fluid is added to the receiver tank via a capped fluid
filler. A fluid level gauge glass enables the operator
to visually monitor the receiver tank fluid level.
DO NOT remove caps, plugs and/or other
components when compressor is running
or pressurized.
Stop compressor and relieve all internal
pressure before doing so.
02250203-986 R01
E900H USER MANUAL
assure a minimum
WARNING
receiver
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