Introduction; Purpose Of Controls Guide- Supervisor - Sullair LS-200 Operator's Manual And Parts List

7.1 INTRODUCTION

While Sullair has built into the 200 Series package
a comprehensive array of controls and indicators to
assure its proper operation, the user should recog-
nize and interpret readings which call for service or
indicate the onset of a malfunction. Before starting
the unit, the user should become familiar with the
controls and indicators-their purpose, location, and
7.2 PURPOSE OF CONTROLS GUIDE- SUPERVISOR CONTROLLER
CONTROL
EMERGENCY STOP SWITCH
THERMAL O/L RESET
MODULATING INLET VALVE
SPIRAL VALVE
PRESSURE REGULATOR
PRESSURE REGULATOR (WITH
SPIRAL VALVE)
SOLENOID VALVE
MINIMUM PRESSURE/ CHECK
VALVE
PRESSURE RELIEF VALVE
BLOWDOWN VALVE ASSEMBLY
OPERATION- SUPERVISOR CONTROLLER
PURPOSE
Pushing in this switch, found adjacent to the Supervisor, cuts all
AC outputs from the latter and de-energizes the starter. A fault
message (E STOP) is displayed by the Supervisor until the but-
ton is pulled out and the
Momentarily pushing this button, found on the starter's thermal
overload element housing, re-closes the latter's contacts after a
current overload takes place. Please be aware that the elements
must be allowed to cool sufficiently before resetting.
Regulates the amount of air allowed to enter the air compressor.
This regulation is determined by the amount of air being
used at the service line. Also acts as a check valve to prevent
reverse compressor rotation at shut down.
Internally bypasses and controls the air flow capacity of the com-
pressor, in order to match air supply to the demand. This device
is standard on VCC-200 models.
Allows a pressure signal to reach the air inlet valve to control
air delivery according to demand.
Opens a pressure signal to the spiral valve actuator allowing the
spiral valve to regulate air delivery according to air demand.
Bypasses the pressure regulator valve causing the inlet valve
to close when the compressor reaches maximum operating
pressure. Also activates blow-down valve.
Maintains minimum of 50 psig (3.5 bar) in the compressor
sump. Valve piston restricts receiver air discharge from receiver/
sump when pressure falls to 40 psig (2.8 bar). Also prevents
backflow into the sump during unload conditions and after shut-
down.
Vents the sump vessel to atmosphere if the compressed air
pressure exceeds 200 psig (13.8 bar). Its operation indicates
fault with the Supervisor operation or its programming.
Vents the sump vessel to atmosphere during unloading and
shutdown.
use.
Indicators and functions included in the package
are listed in the following guide. However, all
Supervisor Controller-related functions and indica-
tors are presented in the Supervisor Controller
Manual, so please refer to that document for addi-
tional information.
pad is depressed.
Section 7
Continued...
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