Alpha Technologies AlphaGen PN-6x-T 7.5kW 48VDC - Technical Manual - Manual (Page 71)

042-288-B0-001, Rev. A 71
5.0 Turn-up and Test, continued
5.4 Generator System Sensor Verifi cation
The ECM has a built-in self-test feature. Each time the ECM’s RAS (Run-Auto-Stop) switch is
placed in the AUTO position, a one minute self-test is performed and any failures are reported
as major or minor alarms. Latched alarms can be reset after the fault has been cleared by
placing the RAS switch to the STOP position for three seconds and then back to the AUTO
position.
5.4.1 Enclosure Alarm Verifi cation
1. Place the RAS switch in the AUTO position. Verify the generator runs for one
minute and the only alarm reported by the ECM is a minor Tamper alarm.
2. Place the RAS switch in the STOP position for three seconds and then back to
Auto to start a generator self-test. During the one minute self-test, unscrew the
pad shear sensor from the enclosure, and slowly lift sensor away from magnet.
Verify the generator stops running and the ECM reports a major Pad Shear
alarm. Replace pad shear sensor.
3. Place the RAS switch in the STOP position for three seconds, and then back
in the AUTO position to start a generator self-test. During the one minute self-
test, trip the gas sensor by placing a cloth moistened with isopropyl alcohol over
the gas sensor for at least three seconds. The red LED on the gas sensor must
illuminate for three seconds before the ECM will recognize and report the alarm.
Verify the generator stops and the ECM reports a major Gas Hazard alarm.
Gas from an unlit butane lighter can also be used to trip the gas sensor.
4. Place the RAS switch in the STOP position for three seconds and then back to
the AUTO position to start a generator self-test. During the one minute self-test,
trip the Water Intrusion sensor by lifting the small plastic fl oat located behind the
Ignition Battery. Verify the generator stops running and the ECM reports a major
Water Intrusion alarm.
The Water Intrusion alarm is non-latching (self-clearing), and must be in the active state for the ECM to report
an alarm.
NOTE:
NOTE: