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INM MTL SUM5 Rev 7
DRAFT - 09 June 2021 DRAFT - 09 June 2021
30.11 ISA M – Manual Reset – Lock In
Sequence Features
1. Acknowledge, reset and test pushbuttons.
2. Alarm audible device
3. Lock In of momentary alarms until acknowledged
4. The Audible device is silenced and the ashing visual alarm stops when acknowledged.
5. Manual reset of acknowledged alarms when the process has returned to normal
6. Operational test
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