Air Inlet System, Functional Description; Instrument Panel Group , Functional Description - Sullair 10B Series Operator's Manual

Figure 2 ---6 Air Inlet System
Should the pressure begin to rise, the pressure
regulator will resume its normal function as previ-
ously described.
For a compressor with varied periods of time when
there are not any air requirements, a "Dual---Con-
trol" option is available. This option allows you to
set the compressor in an automatic position
whereby the compressor will shut down when no
compressed a ir requirement is present and restart
as compressed air is needed.
2.7 AIR INLET SYSTEM, FUNCTIONAL DESCRIP-
TION
Refer t o Figure 2 --- 6. The compressor inlet systems
consists of a dry---type air filter, a restriction gauge
and an air inlet valve.
The restriction gauge (located on the compressor
inlet pipe), indicates the condition of the air filter by
showing red when filter maintenance is required.
This indicator must be manually reset after the air
filter has been serviced.
The poppet ---type modulating air inlet valve directly
controls the amount of air intake to the compressor
in response to the operation of the pressure regula-
tor (see Modulating Mode, Section 2.6). The inlet
valve also acts as a check valve, thus preventing re-
verse rotation when the compressor is shut down.
2.8 INSTRUMENT PANEL GROUP , FUNCTIONAL
DESCRIPTION
Refer t o Figure 2 --- 7. The instrumentation for t he 25,
30 and 40HP air compressors consists of a panel
group which continually monitors the operating
condition of the compressor. The panel group has
the following gauges: a sump pressure gauge,
line pressure gauge, compressor fluid tempera-
ture gauge, hourmeter, air filter restriction indi-
cator, separator maintenance gauge and a fluid
filter maintenance gauge.
S The sump pressure gauge continually monitors
the sump pressure at the various load and/or un-
load conditions.
The line (terminal) pressure gauge is con-
S
nected to the dry side of the receiver downstream
from the check valve. It continually monitors the air
pressure.
S The fluid temperature gauge monitors the tem-
perature of the fluid in the sump. The normal read-
ing should be approximately 170_F (77_C) with
70_F (21_C) ambient.
S The hourmeter records the cumulative hours of
operation for the compressor. It is useful for plan-
ning and logging service operations. The hour-
meter is located in the door of the control box.
S The air filter restriction indicator monitors the
condition of the air filter and shows red when the
element restriction is excessive, which is manually
reset after the element has been changed.
The separator maintenance gauge monitors
S
the condition of the separator element. It indicates
when the element restriction is excessive.
The fluid filter maintenance gauge monitors
S
the condition of the fluid filter element. It indicates
Figure 2 ---7 Instrument Panel Group
Section 2
DESCRIPTION
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