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4.0 Installation
Follow the instructions below for installing the unit. :-
1. Fit the alarm to the Fume Hood using the cut-out details provided with the
unit --- see page 16 to 17
2. Fit the airflow sensor to the Fume Hood using the cut out and installation
details provided --- see page 18
3. Connect the ‘telephone style’ airflow sensor plug-in cable to the sensor
and the back of the alarm unit --- see typical connection diagram on page
19 & 20
4.
Plug in the power adapter to a 120V AC power socket and connect the
power supply connector to the alarm unit --- see typical connection
diagram on page 19 & 20
5.0 Start up / Calibration
1. Power up the alarm and it then performs a self test on the display and all
indicators etc ( approx 5 sec ) , then wait at least 30 secs while the sensor
temperature stabilizes.
2.
If the alarm has not been calibrated it will display ‘ Requires setup ’ –
press ENTER to continue and in the Main Menu use the +/- buttons on the
alarm face to select ‘ SETUP ‘ and then press the ENTER button.
3.
To calibrate the alarm it is necessary to use a pre-calibrated anemometer
which can be used to give an accurate measurement of the actual face
velocity of the hood at two sample values. The lower value is taken with
the sash at the normal working height and is ‘captured’ by the alarm.
