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ACCESSORIES - CUT-OFF SWITCH
The installation of a cut-off switch is of great importance in order to safeguard those who perform
safety/maintenance interventions in ventilation equipment and is obligatory to comply with the Machine Directive
2006/42/CE.
Thus, ARFIT air handling units can be supplied with mounted cut-off switches. In the images presented below is
illustrated the connection diagram of the cut-off switch for single-phase (Image 17) and three-phase (Image 18)
fans;
- Single-phase Cut-off switch
-Three-phase Cut-off switch
ACCESSORIES - PRESSURE SWITCH
The differential air pressure switch allows the differential pressure to be monitored between two different points.
It is applied to the equipment to collect information about the condition of the filters and also the condition of the
fans of the equipment.
The regulation of the desired pressure differential is carried out directly in the pressure switch as shown by the
image 19 with its electrical connections expressed in the image 20;
Image 17
Image 18
Image 20
Image 19
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