Operating conditions
Operation only permitted, if following conditions are met:
- Permanently installed electrical installation.
- Connection cable permitted for explosion risk areas and load.
- Mains disconnect device with a contact opening of at least 3 mm per pole.
- Permitted voltage and frequency rating plate.
- Explosion protection terminal box provided.
- Protective-conductor terminal, at mains end in terminal box. There is a terminal on the outside of the fan for earthing a duct system.
- Operating in intended air power range.
- Permitted operating point. The current and power stated on the rating plate are measured with free suction and free blow-out. They may be higher or lower depending on the operating point.
A PTC thermistor triggering system is essential for thermal fusing. Only undertake speed control with transformer matched to type, e.g. with MAICO TR... Exception: DZ.. 35/2 B Ex e / t not speed adjustable.
DZD .. Ex e / t: Fit repair switch on roof directly at installation location.