JAF jet axial fans are designed for general purpose ventilation of underground and semi-opened parkings, ventilation of tunnels, smoke extraction in case of fire as a part of smoke extract system. The fans generate a high-speed and high-pressure directed air jet.
JAF casing has a tubular shape and is made of polymer coated steel. There are two models available for order - with cylindrical or octagonal casing. The fan with octagonal casing has lower dimensions in height, a hinged hatch for electrical installation with captive bolts, and a removable middle part for technical service. The fan has a sound insulation of mineral wool. The casing includes inner brackets for motor fixation. These brackets act as directing vanes and distribute air flow uniformly, thus increasing aerodynamic performances of the fan.
A three-phase asynchronous motor with a short-circuit rotor is installed in the fan casing. The motor ingress protection rating is IP55. The motor design ensures operation of the fan in the smoke extract systems or/and in the general ventilation systems on unidirectional and reverse modes. The motors are rated for 400 V power mains voltage and 60 Hz frequency.
Dynamically balanced impeller made of cast aluminium alloy for smoke extraction fans and of reinforced fiberglass polyamide for general ventilation fans. The reversible fans are equipped with 100 % reversible two-directional impeller.
JAF fans are designed for horizontal ceiling mounting and fixation by means of the supplied fixing brackets attached to the fan casing.
The fans with octagonal casing can be ordered only in 315, 355, and 400 diameters.
