9/15
The 3-pole service switch is designed for motors rated at 230/400 V [single-speed versions].
The 6-pole service switch is designed for single-speed motors rated at 400/690 V.
6. IDENTIFICATION MARKING________________________________________
Example of smoke exhaust fan identification:
mcr Pasat 50 / 4 - 1.5 / F400
7. INSTALLATION_____________________________________________
The mcr Pasat smoke exhaust fans are intended for rooftop installation outside of the fire zone it serves.
7.1. Pre-assembly inspection____________________________________________________
Each smoke exhaust fan is factory inspected by the manufacturer prior to packing and shipping. Upon
unpacking the delivered smoke exhaust fan, visually examine it for any damage in transport.
The motor shaft should rotate with the rotor without evident resistance or scraping.
7.2. Location and assembly_______________________________________________________
Locate the mcr Pasat smoke exhaust fan outdoor and beyond the fire zone. The equipment installation
orientation must be horizontal, i.e. with the motor axis in the vertical, at a minimum height of 250 mm
above the roof plane.
Prior to installation, verify the load bearing capacity of the roof structure on which the equipment is to be
located. Prepare and secure an opening in the roof slope at a diameter that fits the equipment. Set and
level a special roof fan base over and aligned with the opening, and suitable for the roof type. Once it
has been levelled, fasten the roof fan base to the slope with fixing anchors, seal off the base interface
Fire resistance class
Motor power [kW]
No. of pole pairs
Rotor nominal diameter [x10 mm]
Product commercial name
Diagram WS.01 - WS/3 service switch
Motor, 230/400V
3-pole service switch
Aux contact
Diagram WS.02 - WS/6 service switch
Motor
two-speed 400V
6-pole service switch
Aux contact
Speed switch, Y - YY
Diagram WS.03 - WS/6 service switch
Motor, 400/690V
6-pole service switch
Aux contact
Y /
statr
