LFB

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Designations

1 L2 F3 B- 4 2- 5 200/ 6 74- 7 1508 T
 

  1. Low-pressure centrifugal fan
  2. Type of rotor
    F - rotor with backward curved blades
  3. Housing tin
  4. Number of motor poles (rotation speed)
  5. Diameter of rotor
  6. Width of rotor
  7. Power
    150 - 150 x 10 = 1500W
  8. Electric motor
    S Single-phase motor
    T Three-phase motor
The LFB fans is designed for use in various mechanical ventilation systems. They are designed for ventilation of rooms where the level of dust is low.
 

Application

The LFB fans is designed for use in various mechanical ventilation systems. They are designed for ventilation of rooms where the level of dust is low. Exemplary applications comprise pressure and exhaust ventilation in individual ventilation and air conditioning systems.

They are commonly used in cooling and drying systems, local exhaust facilities, ventilation of shops in various industries, etc. They perform well in air filtration systems, e.g. in exhaust systems in paint shops, spray booths, etc.

Construction

A radial, low-pressure, directly driven fan. The welded rotor, provided with forward-tilted blades is made of galvanized steel sheet. The rotors are dynamically balanced according to the standard ISO 1940. Housing is made of welded steel sheet, reinforced with steel angle bars and connected to the base of the electric motor.

The whole set is painted with powder paint. The fans are designed for transporting non-aggressive and non-explosive, dust-free gases. As a standard, the LFB fans are manufactured in a LG configuration with a protective mesh at the inlet.

On request, we can supply the equipment in any RD configuration and in any color from the RAL palette (RAL 5010 - blue is the standard color).

Electric motor

Asynchronous, three-phase 230/400V or 400V, 50Hz, or single-phase 230V, 50Hz, with a capacitor. The motors are manufactured in accordance with IEC 60072 and IEC 60034 standards, and have been awarded with a CE mark. Insulation class F, degree of protection IP 55.

On request, we can deliver motors driven by another voltage or frequency, adapted for voltage control or for a frequency converter, provided with an independent cooling system and/or with sensors (either bimetallic or posistor).
Name Nominal
voltage [V]
Speed
[r.p.m.]
P max
[W]
I max
[A]
Q max
[m3/h]
P
static [Pa]
Weight
[kg]
Temp.
min.
[oC]
Temp.
max.
[oC]
LFB-2-200/74-150T 400 2880 1500 3 2100 1200 27 -20 80
LFB-2-200/74-150S 230 2740 1500 9.1 2100 1200 28 -20 80
LFB-2-224/104-300T 400 2870 3000 6.3 3400 1400 25 -20 80
LFB-2-250/114-550T 400 2890 5500 9.8 4800 1980 54 -20 80
LFB-2-280/102-750T 400 2885 7500 14 5560 2400 59 -20 80
LFB-4-280/102-075T 400 1450 750 2.2 2800 620 24 -20 80
LFB-4-280/102-075S 230 1340 750 5.6 2850 600 26 -20 80
LFB-2-315/103-1100T 400 2900 11000 19.1 6700 2990 94 -20 80
LFB-4-315/143-220T 400 1450 2200 4.6 5100 850 51 -20 80
LFB-4-355/144-400T 400 1450 4000 8.4 6800 1240 55 -20 80
LFB-6-355/144-220T 400 960 2200 9.3 4490 520 55 -20 80
LFB-4-400/183-750T 400 1450 7500 14.6 10350 1300 88 -20 80
LFB-6-400/183-220T 400 950 2200 5.5 6830 660 62 -20 80

Performance curves