Section 4
SUPERVISOR
10
4.1 INTRODUCTION
Your compressor is equipped with a Supervisor I
microprocessor c ontroller. This section explains
the functions and operation of the Supervisor con-
trol as well as how to program its features for your
particular application.
4.2 INSTRUMENTATION, FUNCTIONAL DE-
SCRIPTION
Refer toFigure4---1.TheSupervisorI control panel
consists of displays for pressure, temperature,
time (run hours), and a status message. Default
pressure is line pressure (P2) which is normally dis-
played with pad selections for sump pressure, fluid
pressure, separator differential and fluid filter differ-
ential. Default temperature is unit discharge tem-
perature (T1) which is normally displayed with a
pad selection for injection fluid temperature. An
LED map provides a graphic illustration of the
points being monitored. Operator controls consist
of EMERGENCY STOP, ON/OFF, monitor display
pads and programming pads. All compressor con-
trol, pressure and temperature displays are pro-
vided in the Supervisor I.
S The line (terminal) pressure transducer (P2) is
connected to the dry side of the receiver down-
stream from the check valve and continually moni-
tors the plant air pressure.
S The sump pressure transducer (P1) monitors
the sump/unit discharge pressure.
S Injection oil pressure (P3) monitors oil pressure
at the point of injection into the compressor down-
stream of the oil filter.
S Filter oil pressure (P4) monitors oil pressure
ahead of the oil filter and is used with P3 to calculate
oil filter differential; ∆ P2=P4---P3.
S The discharge temperature probe (T1) moni-
tors the temperature of the air leaving the compres-
sor unit. For both air---cooled and water---cooled
compressors the normal reading is approximately
180_F(82_C) based on 80_F(27_C) ambient tem-
perature.
S The injection temperature probe (T2) monitors
the temperature of the fluid just before it is injected
into the unit.
S The air filter maintenance switch monitors the
condition of the air intake filter . When the Supervi-
sor displays the message “AIR FILTER MAINT
RQD”, filter service is required.
S The ON/OFF pad turns the compressor on and
off.
S The hour display records cumulative hours of
operation for the compressor and is useful for plan-
ning and logging service operations. A selectable
Figure 4---1 Supervisor Control Panel
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