When the supervisory power is restored, the
SUP’V’Y. POW. TROUBLE lamp goes out and the
Sonalert sounds (“ring-back”).
To iilence the Sonalert, place the NORMAL/SI-
ALARMCIRCUITTROUB~
Similar to “Operating Power Failure” except
that the NORMAL POWER lamp remains illumina-
ted.
LENCE switch (2) in the NORMAL position.
6