E900H User Manual 2: Description
02250203-986 R03
Subject to EAR, ECCN EAR99 and related export control restrictions. 19
2.4 Air inlet system, functional
description
Refer to Figure 2-2. The compressor inlet system con-
sists of one air filter, a compressor air inlet valve and
in
terconnecting piping to the compressor. Also, an air fil-
ter restriction indicator gauge is located next to the air fil-
ter housing.
The air filter is a 2-stage unit with a safety element dry
ele
ment-type filter. This filter is capable of cleaning
extremely dirty air. However, in such cases, frequent
checks of the air filter will be required. Referring to the air
filter restriction gauge will indicate when restriction of the
air passing through the filter becomes too high.
At this time, change the air filter element. Refer to Sec-
tion 6.9.5: Air filter maintenance on
page 46. This indica-
tor should be checked daily, after start-up under normal
conditions
.
The compressor air inlet valve controls the amount of air
in
take of the compressor in response to the air demand.
2.5 Compressor discharge system,
functional description
Refer to Figure 2-3. The Sullair compressor unit dis-
charges compressed air/fluid mixture into the receiver
ta
nk.
The receiver tank has three functions:
• It acts as a primary fluid separator.
•
Serves as the compressor fluid storage sump.
• Houses the final fluid separator.
The compressed air/fluid mixture enters the receiver tank
an
d 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 com-
pressed air collects on the surface
of the final separator
element as the compressed air flows through the separa-
tor. As more and more fluid collects on the element’s sur-
face, the fluid descends to the bottom of the separator. A
r
eturn line (or scavenge tube) leads from the bottom of
the separator element to the inlet region of the compres-
sor unit. Fluid collecting on the bottom of the separator
ele
ment 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/
chec
k valve, located downstream from the separator,
helps assure a minimum receiver pressure during all con-
ditions. This pressure is necessary for proper air/fluid
sep
aration and proper fluid circulation.
A minimum pressure/check valve at
the outlet of the
receiver is installed to prevent compressed air in the ser-
vice line from bleeding back into the receiver on shut-
down when the compressor is being run
in parallel with
other compressors tied to a large air system.
Fluid is added to the receiver t
ank via a capped fluid filler.
A fluid level gauge glass enables the operator to visually
monitor the receiver tank fluid level.
Figure 2-2: Air inlet system
1. Air filter 4. Compressor
2. Inlet valve 5. Restriction indicator
3. Inlet adapter 6. Air inlet elbow
WARNING
Do not remove caps, plugs and/or other compo-
nents when compressor is running or pressur-
ized.
Stop compressor and relieve all internal pres-
sure before doing so.
To Next Page
Loading...
