Kewaunee Air Alert 300, Инструкция по установке и эксплуатации

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3.1 Alarm Configuration / Calibration
The alarm is supplied with a factory configuration.
The only part of the configuration that can be changed is the setting for the Visor Open repeat timer time delay --
if required this can be factory changed prior to ordering the monitor.
The alarm has two modes for the calibration of the airflow alarm point. These two modes are selectable via a
‘jumper connection’ on the back of the alarm PCB.
The jumper selection calibration modes are :-
a. With Jumper J2 connected - The airflow is reduced to the alarm point mechanically and this airflow is
‘captured’ by the alarm. The airflow is then restored to the normal operating value and the Low Air alarm will
activate if the airflow subsequently falls to the alarm point
b. With JumperJ2 not connected - This is a two point calibration method. The airflow is set to the normal
operating value and this value is ‘captured’ by the alarm and taken to be 100%. The airflow is then increased
to one and a half time the normal operating value and this value is ‘captured’ by the alarm and taken to be
150%. The Low Air alarm will then activate if the airflow subsequently falls to 80% of the normal operating
value.
See ‘Quick Start Installation’ below for details of the Calibration procedures
3.2 Start Up
When unit is powered up the following sequence of events occur :-
1.
The 12V DC power is applied to the airflow sensor and the alarm then performs a self-test on the functions ,
LEDs and audible alarm ( approx 2 sec ) and then initiates a delay timer of 30 secs to allow the airflow sensor
to stabilize.
2.
During the whole of the 30 sec period all alarms and relay outputs are inhibited and the Red & Green LEDs
will be permanently ON.
3.
At the end of the 30 sec delay the unit performs one of two options :-
a. If the alarm calibration has been previously completed – the unit goes to
normal operating mode ( Run )
b. If the unit has not been calibrated -- the Red & Green LEDs will flash on/off and
the audible alarm will be muted. It is then possible to press the Enter button for
5 secs and go into the calibration mode
– (See ‘Quick Start Installation’ below for
details of the Calibration procedures