APC PM3 User Manual download pdf (Page 11)

OPERATION and FEATURES

SPD’s do not require alot of operator intervention after installation.

NOTE: The PM Series has a green LED for each phase which extinguishes when the module is no longer providing

protection (fault condition).

All of the PM series of SPDs contain a diagnostic circuit which monitors the suppressors status continuously and

automatically. If a fault condition were to occur, the built-in front panel audible alarm will sound and a red "Service"

LED will light, indicating that the unit is in need of service by a qualified technician.

The audible alarm can be silenced by pressing the "Mute Alarm" button on the touchpad, until a qualified electrician

or service person is available to service the unit. The red "Service" LED will continue to be illuminated even though

the audible alarm has been silenced. This will continue until the fault condition has been cleared.

Use the troubleshooting section of this manual to locate and repair the fault.

Status Panel Controls, Indicators, and Alarms

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APC PM3 User Manual Page 11