AFA4000/E VAV Airflow Controller / p.83
Use a roller bearing or pulley where the cable runs over a metal surface.
Figure 48: Typical under sash sensor retro-installation
3. Fix the retro-reflective tape strip to the inside of the fume hood, on the opposite side to the
sensor.
Position the centre of the retro-reflective tape strip in line with the centre of the sensor. A
small offset between the sensor and retro-reflective tape strip is acceptable. The maximum
offset values are shown in Figure 49.
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