UNITY DAU User Guide & Log Book
Priorities
The Unity DAU has six fixed priorities for the inputs as follows:-
1.
Fire Microphone, this is the highest priority input on the system, designed to be used by
the controlling officer.
2.
Message Generator, this has three messages, all messages latch until reset from either
the front panel recessed button, or from the cancel button on the fire microphone or by the
RESET input from the Fire alarm input. Messages are prioritised in the following order:
a. EVAC- Triggered from the fire alarm interface or from the fireman’s microphone, top
priority message.
b. ALERT- Triggered from the fire alarm interface or from the fireman’s microphone,
second priority message.
c. TEST- Triggered from the front panel or from the fireman’s microphone, this is the
lowest priority message.
3.
Page Input, this is the fifth priority input, designed for non-emergency functions such as
reception paging.
4.
Music Input, this is the lowest priority input and automatically selected when no other input
is exerting a priority, if not used turn the level control on the front panel fully anticlockwise.
Operation
The Unity DAU is fully automatic in operation; the only user controls available once the unit has been
commissioned are the front panel Reset and Test buttons. Pressing the test button will broadcast the
test message to the speaker circuits and latch until the Reset button is pressed.
The Unity DAU has fully compliant fault monitoring when correctly installed and commissioned, if any
status indicators are illuminated YELLOW (except the Message ACCESS Led) call service to investigate
the cause of the fault, this should be indicating a Sounder or Voice alarm fault on the Fire Alarm Panel.
Maintenance.
It is a requirement of BS5839pt8 that a maintenance agreement be in place for Voice Alarm systems,
the maintenance schedule should be as follows.
Weekly:
Broadcast the test message to all zones, and check speaker operation, microphones
should be checked for operation if fitted, record results in the site log.
Monthly:
Trigger the fire alarm system when the building is empty and check the Evacuate
message broadcasts, record results in the site log.
Quarterly:
Engineer Call to check system operation.
Yearly:
Engineer Call to check system operation and check Battery Health.
5 Yearly:
Engineer Call to check system operation and replace the batteries.
Document DCC UND 7002-01 Rev 1 June 2005
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