Electrical System, Functional Description - Sullair 185Tier 3 Kubota User Manual

185 T3 Kubota User Manual
2.12 Electrical system, functional
description
The electrical system consists of the basic electrical ele-
ments required to operate the compressor and also has a
system feature that automatically shuts down the com-
pressor when a malfunction occurs. The system's com-
ponents include: an engine starter, battery, alternator/
voltage regulator, and a fuel solenoid. It also has a com-
pressor discharge temperature switch that will shut the
compressor down if the compressor temperature
exceeds 250°F (121°C). It has an engine water tempera-
ture switch set to shut down the compressor when the
coolant temperature reaches 230°F (110°C) and an oil
pressure switch that will shut down the compressor if the
engine oil pressure goes too low. An underspeed sensor
shuts down the compressor if the engine speed falls
below 1500 rpm.
2.13 Compressor shutdown & warning
system, functional description
The Shutdown System and Annunciator Module (SSAM)
continuously monitors the status of the compressor. In
02250223-054 R01
Subject to EAR, ECCN EAR99 and related export control restrictions.
the event of a shutdown condition, the SSAM will shut
down the compressor and display (flashing) the appropri-
ate code on the instrument panel annunciator light. The
display will continue flashing until the ignition switch is
turned OFF. The shutdown codes are:
• One flash: high compressor discharge temper-
ature
• Two flashes: high engine coolant temperature
• Three flashes: low engine oil pressure
• Four flashes: low engine speed
• Five flashes: low fuel level (optional)
The SSAM also provides startup logic for the compres-
sor. When the ignition switch is in the ON position, the
annunciator light will illuminate for 30 seconds. During
this 30 second period, pressing the ignition switch will
engage the engine starter. The low engine speed switch
is inactive during this startup time interval. By the end of
these 30 seconds, the annunciator light goes out and the
engine START cycle is disabled. At this time the system
runs all safety checks including low fuel level (if installed).
2: Description
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