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INM MTL SUM5 Rev 7
DRAFT - 09 June 2021 DRAFT - 09 June 2021
30.7 ISA A-4 – Automatic Reset – Non Lock In
Sequence Features
1. Acknowledge, and test pushbuttons.
2. Alarm audible device
3. Non Lock In of momentary alarms
4. The audible device is silenced and the ashing stops when acknowledged.
5. Automatic reset of alarms when the process has returned to normal before or after
acknowledge (Non Lock In)
6. Operational test