AFA4000/2
Airflow Monitor / p.103
Figure 66: Red Power On LED
6.
Ensure that Switch 1 (
sw1
),
see Figure 54
, is set to the correct range:
Fume Hood Size
Sash Beam Range
sw1 Setting
0
to 10’ (up to 3000mm)
Short
Off
10’ to 16’ (3000 to
5000mm)
Long
On
7.
Ensure that Switch 2
(sw2)
(Figure 65) is set to
Off
(Operation Mode)
.
8.
Ensure that Switch 3 (
sw3
) is set to
On
(Normal Operation)
.
9.
Set Switch 4
(sw4)
to
On
. A buzzer will then sound when the beam is broken, this aids
the setting up of the beam.
The signal LED indicates beam status:
•
Green if the detection area is clear.
•
Red if the area is not clear.
10.
Turn the gain potentiometer anti-clockwise, to the minimum. The transmitter and
receiver can no longer sense each other.
11.
Slowly adjust the gain potentiometer (Figure 65) clockwise (to maximum) until the
transmitter and receiver can sense each other, for example, the receiver can detect
the beam sent from the transmitter.
12.
Set
sw3
to
Off
to store the settings.
13.
Turn the gain potentiometer approximately 5 degrees clockwise to ensure sufficient
gain.
14.
Use a glass object to test whether it breaks the beam. Do this across the entire open
face of the fume hood.
Summary of Contents for AFA4000/2
Page 1: ...AFA4000 2 Airflow monitor Installation and operating manual Issue 1 ...
Page 50: ...AFA4000 2 Airflow Monitor p 50 Figure 21 AFA4000 2 typical connection diagram ...
Page 51: ...AFA4000 2 Airflow Monitor p 51 Figure 22 AFA4000 2 AS typical connection diagram ...
Page 52: ...AFA4000 2 Airflow Monitor p 52 5 4 Dimensions Figure 23 AFA4000 2 and AFA4000 2 AS dimensions ...
Page 53: ...AFA4000 2 Airflow Monitor p 53 Figure 24 SM7 airflow sensor dimensions ...
Page 90: ...AFA4000 2 Airflow Monitor p 90 6 10 Auto Sash System Control Box general wiring diagram ...
Page 127: ...AFA4000 2 Airflow Monitor p 127 ...
Page 140: ...AFA4000 2 Airflow Monitor p 140 Figure 69 Typical connection diagram ...
Page 144: ...AFA4000 2 Airflow Monitor p 144 Figure 70 Connection diagram with RS232 485 converter ...
