TEL AFA4000/2, Installation And Operating Manual

Page: 57 / 177

AFA4000/2 Airflow Monitor / p.57
Figure 27: Auto Sash Control Unit Connectors, Single and Dual Fume Hoods
Once the Auto Sash Control Unit has been positioned, mark its position using the fixing
holes in the rear of the housing as a template. Then, attach the Auto Sash Control Unit
using screws.
6.1.2 Wiring in the Auto Sash Control Unit
For fume hoods with an inner and outer sidewall, route all cables through the sidewall
and into the service void.
For fume hoods with a single wall, route all cables up the outside of the sidewall, using
suitable trunking or fixing pads and ties.
When wiring in the Auto Sash Control Unit, observe the following:
•
Keep cables clear of moving parts.
•
Use grommets wherever cables pass through sidewalls to prevent abrasion of the
cable insulation and / or sidewall. Where a cable is supplied with a DIN connector, the
grommet should have a minimum internal diameter of 17mm (0.67").
•
Do not overstress cables by bending, for example when passing at 90° through a
sidewall.