General; Purpose Of Controls - Sullair 32 250L Series Operator's Manual

4.1 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

4.2 PURPOSE OF CONTROLS

CONTROL OR INDICATOR
START PUSHBUTTON
STOP PUSHBUTTON
HOURMETER
LINE PRESSURE GAUGE
SUMP PRESSURE GAUGE
DISCHARGE TEMPERATURE GAUGE
BEARING FILTER MAINTENANCE INDICATOR
SEPARATOR MAINTENANCE INDICATOR
COOLANT LEVEL SIGHT GLASS
SEPARATOR RETURN LINE SIGHT GLASS
FLOW CONTROL VALVE
DISCHARGE CHECK VALVE
THERMAL 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 purpose,
location and use.
PURPOSE
Depress to turn the compressor ON.
Depress to turn the compressor OFF.
Records cumulative hours of compressor operation;
useful for planning and logging service schedules.
Continually monitors service line air pressure. 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 180_F to
190_F to 205_F.
Indicates when a bearing filter element change is re-
quired. Shows red when pressure drop through the
filter is excessive.
Indicates when separator element change is re-
quired. Shows red when pressure drop through the
separator is excessive. The separator must be re-
placed. Do not clean the separator elements.
Monitors 24KT coolant level in the sump. Proper level
is to fall between the FULL and ADD marks located on
the side of the sight glass. Check the level when the
machine is shut down. DO NOT OVERFILL.
Used to indicate fluid flow in the return line. When the
compressor is running at full load, coolant flow should
be visible in this sight glass. There may be little or no
flow when the compressor is running unloaded, but a
sluggish flow from the primary return line at full load
indicates a need to clean the return line strainer. There
should be little or no flow through the secondary re-
turn line.
Cuts off flow of fluid to compressor unit at machine
shutdown and allows flow of fluid to the unit on start-
up.
Cuts off the reverse flow of air/fluid mixture through
compressor discharge system at compressor shut-
down.
Regulates flow of fluid to and around the cooler. De-
signed to maintain a minimum operating temperature
of 170_F; used for fast warm-up on start-up.
Section 4
OPERATION
13