Section 5
COMPRESSOR OPERATION
17
5.1 GENERAL INTRODUCTION- STANDARD ELEC-
TRO/MECHANICAL
Ref er t o F igur e 5 -- 1. T he ins t r um ent at ion f or t he
ES--11 Series air compressors consists of a panel
group which continually monitors the operating
condition of the compressor. The standard panel
group has the following gauges: A
discharge tem-
perature gauge
,a
line pressure gauge
and an
hourmeter
. The optional panel includes the stan-
dard gauges plus a
fluid filter gauge
,a
separator
maintenance gauge
, and an
air filter restriction
indicator gauge
.
S
The
line(terminal) pressure gauge
is con-
nected to the package discharge port,
downstream from the moisture separator/
trap. It continually monitors the air pres-
sure.
S
The
discharge temperature gauge
moni-
tors the temperature of the air/fluid mixture
discharged from the compressor unit. The
normal reading should be approximately
185
_
F(85
_
C) with 70
_
F(21
_
C) ambient.
S
The
hourmeter
records the cumulative
hours of operation for the compressor. It is
useful for planning and logging service op-
erations. The hourmeter is located in the
door of the control box.
S
The
air filter restriction indicator
moni-
tors the condition of the air filter and shows
red when the element restriction is exces-
sive, which is manually reset after the ele-
ment has been changed.
S
The
separator maintenance gauge
moni-
tors the condition of the separator element.
It indicates when the element restriction is
excessive.
S
The
fluid filter maintenance gauge
moni-
tors the condtion of the fluid filter element. It
indicates when the element should be
Figure 5-1 Instrument Panel Group (OPTIONAL)
changed.
S
The
sump pressure gauge
is used to de-
termine at start--up whether proper electri-
cal connections were made for motor rota-
tion. An immediate pressure reading indi-
cates proper rotation of the compressor
unit. Itcanalsobeusedtoverifyapressure
drop in the system.
While Sullair has built into this compressor a com-
prehensive array of controls and indicators to as-
sure you that it is operating properly, you will want to
recognize and interpret the reading which will call for
service or indicate the beginning of a malfunction.
Before starting your Sullair compressor, read this
section thoroughly and familiarize yourself with the
controls and indicators -- their purpose, location and
use.
5.2 PURPOSE OF CONTROLS -- STANDARD
CONTROL OR INDICATOR PURPOSE
START/RUN/STOP START/RUN -- T u rn switch momentarily to
“I” START
position to start the compressor, upon release the switch
will return to the RUN position.
STOP -- Turn switch to
“O” STOP
position to stop com-
pressor.
HOURMETER Records cumulative hours of compressor operation;
useful for planning and logging service schedules.
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