Geovent LEF 250, Инструкция по эксплуатации

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7
J
E
A
L
G
C
F
H
B
K
øD
M
I
1 4
6 x M6
M8
5 x M8
ød
ø9
48
N
4.2 Table of dimensions
Table LEF/MEF 250 - 630 (LEX/MEX)
Type 250 315 355 400 450 500 560 630
A 410 510 570 648 715 758 907 989
B 500 700 700 800 800 800 800 800
C 500 600 680 756 850 871 1070 1175
øD 250 315 400 400 500 500 630 630
ød *** *** *** *** *** *** *** ***
E 215 260 284 308 340 345 425 446
F 230 290 329 370 408 421 523 563
G 210 240 272 304 340 362 440 467
H 460 660 660 760 760 760 760 760
I ** ** ** ** ** ** ** **
J 170 210 234 260 290 295 375 400
K 320 400 450 500 560 510 709 800
M 637 720 797 965 1045 1065 1340 1340
N 185 225 250 275 305 263 380 425
VÆGT 38* 43* 48* 56* 71* 81* 125* 135*
* The weight depends on which size motor
** Depending on the motor size
*** Depending on which size pressuretub
4.3 Pressure drop
RPM. & resulting frequency
Example: A pressure controlled fan with frequency inverter, is
connected to 4 extraction arms. If all arms are in use, is the
extracted air flow 4.200 m
3
/h at 1.200 Pa. If the air flew is reduced
to tow extraction arms at the same time, the air flow will regulate
to 2.000 m
3
/h & the power consumption will be reduced by 50%
150
500
Airflow [m³/h]
[Pa] Fan LEF / MEF-355
1000 1500 2000 2500 3000 3500 4000 4500 5000 5500
300
450
600
750
900
1050
1200
1350
1500
1800
2100
2400
n=3540
(2p - 62Hz)
82%
78%
46%
51%
68%
75%
n=2860
(2p - 50Hz)
3,0kW
1,5kW
0,75kW
n=1460
(4p - 50Hz)
(2p - 25Hz)
n=2240
(2p - 39Hz)
0,25kW
88d
B(A
)
79d
B(A
)
69d
B(A
)
n=2507
(2p - 44Hz)
1,1kW
82d
B(A
)
2,2kW
n=3277
(2p - 57Hz)
85d
B(A
)
89d
B(A
)
Efficiency
Sound level in
outlet without
duct
Pressure drop at
a specific air flow
Powe
consumption
►
Fan designation
►
►
►
►
125
200
Air Flow [m³/h]
[Pa] Fan LEF / MEF-250
400 600 800 1000 1200 1400 1600 1800 2000 2200
250
375
500
625
750
875
1000
1125
1250
1375
1500
1625 n=3995
(2p - 70 Hz )
83%
48%
64%
76%
69%
n=2860
(2p - 50 Hz )
n=1460
(4p - 50 Hz )
(2p - 25 Hz )
57d
B(A
)
n=2560
(2p - 45 Hz )
0,55kW
0,37kW
0,09kW
0,25kW
79
dB
(A
)
73B
(A)
70B
(A)
n=3480
(2p - 61 Hz )
0,18kW
76d
B(A
)