Alpha Technologies AlphaGen 5.0kW Auxiliary Power Unit - Manual (Page 23)

1. System Overview
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031-132-B0-001 Rev. A TM ©2000
The service reset push-button is also used to obtain information about
active alarms. The Major and Minor alarm LEDs are very general and a
technician will need more detailed information upon arrival to the site of an
alarming ECM. To retrieve details about an active alarm, the user presses and
releases the service-reset switch. An active alarm (Major or Minor) will be
indicated by the LEDs as indicated in Table 1-2.
NOTE: Depressing the service-reset switch for 5 seconds will cause
the service timer to clear, possibly disrupting the preventive
maintenance schedule.
When the service-reset button is pressed again, the LEDs will represent
the next active alarm. Pressing the button when there are no more active
alarms will reset the LEDs to their normal usage. Several quick flashes of all
five LEDs will indicate end of the alarm list before the LEDs return to normal
operation. If the service reset button is not depressed again when an alarm is
indicated, the LEDs will return to normal operation after 30 seconds have
elapsed. Resetting alarms via status monitoring or via the manual stop switch
will also clear the alarm pattern indicated by the LEDs.
1.6 Operator’s Interface Overview, continued
Run/Auto/Stop (RAS) switch
Fig. 1-8 Detail of Run-Auto-Stop (RAS) switch