Purpose Of Controls - Sullair ES-8 Operator's Manual And Parts List

timer will start timing. When the timer expires the
machine will start.
SEQUENCING MODES
The following is a brief description of sequencing
modes. For details see the Supervisor II Sequenc-
ing & Protocol Manual (See Recommended Spare
Parts List).
S DISABLED --- Responds to status and
parameter change messages via the
RS485 network but will not respond to
start, stop, load or unload messages.
S REMOTE --- Responds to status and pa-
rameter change messages but will not re-
spond to start, stop, load or unload mes-
sages. The remote inputs and outputs are

7.5 PURPOSE OF CONTROLS

CONTROL OR INDICATOR
EMERGENCY STOP SWITCH
MINIMUM PRESSURE/CHECK VALVE
DISCHARGE TEMPERATURE PROBE
PRESSURE RELIEF VALVE
SOLENOID VALVE
PRESSURE REGULATOR
COMPRESSOR OPERATION
enabled (start/stop, load/unload, master/
local).
S SLAVE --- Will respond to all messages,
but will not start or load unless command-
ed to do so by a message. This mode is
used to control the machine from a master
computer.
S HOURS --- Sends status message about
once a second; starts, loads and unloads
machines based on sequencing hours.
S COM ID # --- Sends status message
about once a second; starts, loads and un-
loads machines based on machine Com
ID#.
PURPOSE
Pushing in this switch, found adjacent to the Supervi-
sor II, cuts all AC outputs from the latter and de---en-
ergizes the starter. A fault message (E STOP) is dis-
played by the Supervisor II until the button is pulled
out and the "O" pad is depressed.
Maintains a minimum of 60 psig (4.2 bar) in compres-
sor sump. Valve piston restricts receiver air discharge
from receiver/sump when pressure falls to 60 psig
(4.2 bar). Also incorporated in this valve is a terminal
check valve which prevents line pressure backflow
into the sump during unload conditions and after
shutdown.
Shuts the compressor down when the compressor
discharge temperature exceeds 235_F (113_C). Con-
tinually monitors discharge temperature of the com-
pressor.
Opens sump pressure to the atmosphere if pressure
inside the sump become too high.
Operation of this valve indicates that the pressure reg-
ulator is either faulty or out of adjustment and that the
Supervisor II Controller is not offloading due to im-
proper setting or malfunctioning transducers.
Closes the inlet valve and activates blowdown valve to
vent sump pressure to the atmosphere during unload
conditions and shutdowns.
Controls the intake valve position to control compres-
sor output. The regulator stays closed up to a preset
pressure and then opens to provide a rising control
pressure to the inlet control valve as output pressure
increases.
Section 7
27