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The mcr Pasat roof smoke exhaust fan comprises an electrical motor with the insulation class F, a radial
rotor and an external housing assembly.
The insulated housing encloses the electric motor, on the shaft neck of which the steel rotor is installed.
The air intake to the rotor is guided by the inlet port.
The rotor is a single-sided suction rotor with swept-back blades. The rotor also features blades which
generate vacuum in the motor chamber. This sucks ambient air through the cooling duct.
The fan design facilitates draining of water out of the casing. The water to be drained may originate from
ingress of rain, melting snow or condensed water vapour from the sucked in air.
5.2. Function ______________________________________________________________________
The single-functional fans do not run in standby. When 3-phase voltage is present on the electric box
terminals, the fan is started and running.
The two-functional fans run at low speed (RPM) to handle general ventilation under normal conditions.
When the fan receives an alarm signal, it automatically starts running with the second speed, which is
higher than the first one.
5.3. Dimensions ___________________________________________________________________
mcr Pasat smoke exhaust fans - Table of dimensions
Fan - Type
A [mm] B [mm] H [mm] h [mm] C [mm] D1 [mm] D2 [mm] d1 [mm]
nxM
a [º]
mcr Pasat 31
650
560
650
40
460
315
356
14
8xM8
45
mcr Pasat 35
840
710
750
40
600
355
395
14
8xM8
45
mcr Pasat 40
880
710
850
40
600
400
438
14
12xM8
30
mcr Pasat 50
1000
1000
900
40
880
500
541
18
12xM8
30
mcr Pasat 63
1350
1000
1350
40
880
630
674
18
16xM10 22.5
mcr Pasat 71
1400
1160
1350
40
1040
710
751
18
16xM10 22.5
