General; Purpose Of Controls - Sullair 12 Series Operator's Manual

5.1 GENERAL

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

5.2 PURPOSE OF CONTROLS

CONTROL OR INDICATOR
START PUSHBUTTON
STOP PUSHBUTTON
HOURMETER
LINE PRESSURE GAUGE
SUMP PRESSURE GAUGE
DISCHARGE TEMPERATURE GAUGE
AIR FILTER RESTRICTION GAUGE
FLUID FILTER MAINTENANCE GAUGE
SEPARATOR MAINTENANCE GAUGE
"POWER ON" LIGHT (RED)
"RUNNING" LIGHT (GREEN)
FLUID LEVEL SIGHT GLASS
SEPARATOR RETURN LINE SIGHT GLASS
FLUID STOP VALVE
DISCHARGE CHECK VALVE
call for service or indicate the beginning of a mal-
function. Before starting your Sullair compressor,
read this section thoroughly and familiarize your-
self with the controls and indicators --- their pur-
pose, location and use.
PURPOSE
Depress to turn the compressor ON.
Depress to turn the compressor OFF.
Records accumulative hours of compressor opera-
tion; useful for planning and logging service sched-
ules.
Continually monitors service line air pressure. It is lo-
cated on dry side of receiver downstream from check
valve.
Continually monitors receiver/sump pressure at vari-
ous load and/or unloaded conditions.
Monitors temperature of the air leaving the compres-
sor unit. For both air and water---cooled compressors,
the normal reading should be approximately 190_F to
205_F (87_C to 96_C ).
Indicates when the air filter element change is re-
quired. The gauge shows the red zone when drop
through the filter is excessive.
Indicates when a fluid filter element change is re-
quired. It shows red when the pressure drop through
the filter is excessive.
Indicates when separator element change is required.
Shows red when the pressure drop through the filter is
excessive.
Indicates when the starter is receiving power.
Indicates when compressor is in operation.
Monitors fluid level in the sump. The fluid must be vis-
ible between the indicated portion of the glass. Check
the level when the compressor is shut done. DO NOT
OVERFILL.
Used to indicate fluid flow in the return line. When the
compressor is running at full load, fluid flow should be
visible in this sight glass. There may be little or no flow
when the compressor is running unloaded, but a slug-
gish flow at full load indicates a need to clean the re-
turn line strainer.
Cuts off flow of fluid to compressor unit at compressor
shutdown, and allows flow of fluid to unit on start---up.
Cuts off the reverse flow of air/fluid mixture through
compressor discharge system at compressor shut-
down.
Section 5
OPERATION
17