Sullair LS-200S Operator's Manual And Parts List page 19

Figure 2-5B Control System Diagram- START
START MODE - 0 TO 50 PSIG (0 TO 3.5 BAR)
Refer to Figures 2-5A
pressor (START) pad is depressed, the sump
pressure will quickly rise from 0 to 50 psig (0 - 3.4
bar). During this period, both the pressure regulator
and the solenoid valve are closed, the inlet valve is
fully open and the compressor pumps at full rated
capacity. The rising compressor air pressure is iso-
and 2-5B. When the com-
DESCRIPTION
lated from the service line in this phase by the min-
imum pressure valve set at approximately 50 psig
(3.4 bar).
Closed Inlet Start- (Wye-delta or Solid-State start-
ing) applies dry-sump or service air pressure
through a solenoid valve to hold the inlet valve
closed allowing the compressor to start unloaded.
After a preset time (6-10 seconds) the controller will
discontinue applying pressure to the inlet valve, and
Section 2
13