FläktGroup GMEB, Installation And Maintenance Manual, Page: 10 / 12

8. FAULTS
If any faults occur during operation, they shall be repaired by
qualified maintenance personnel.
Some examples of incorrect use:
- foreign particles inside fan (AHU)
- corrosive media inside AHU
- too low or high temperatures
- too high vibrations
- incorrect maintenance
Possible problems generated:
- bearing damage
- corrosion damage
- vibration generated damage
- broken impeller
9. SPARE PARTS
The following spare parts are available: impeller, inlet cone (in-
cluding the front plate), motor and drive. Please contact Fläkt-
Group sales unit.
10. RECOMMENDED DISTANCE TO OTHER
COMPONENTS
To achieve the best possible operation of the fan inside of the Air
Handling Unit the following minimum distances shall be followed:
11. AIR FLOW MEASUREMENT DEVICE
The airflow sensor is used for measuring the airflow of the plug
fans. The method is based on differential pressure. The pressure
is measured at a specific point in the inlet cone and the reference
pressure is measured upstream of the inlet cone. The air flow
sensor is supplied factory mounted in the inlet cone. The air flow
is calculated as a function of the coefficient k and the differential
manometer reading
D
p
m
from the equation:
q
v
= air flow m
3
/s
k = k-factor of each fan
D p
m
= differential pressure reading (Pa)
FAULTS, SPARE PARTS, DISTANCES, AIR FLOW MEASUREMENT DEVICE, DISPOSAL
q
v
= 1
k
∆
p
m
x
GMEB-1-aaa
GMPM-1-aaa
k-factor
025 67.56
028 54.40
031 41.63
035 36.01
040 29.62
045 22.56
050 18.89
056 14.56
063 11.63
071 9.07
080 7.35
090 5.77
Size C Ø D E LD R
025 110 275 190 290 138
028 123 307 212 324 154
031 137 342 258 361 171
035 154 386 290 406 193
040 174 436 327 458 218
045 196 491 370 518 246
050 220 549 415 581 275
056 244 610 463 648 305
063 273 683 520 728 342
071 308 769 586 820 385
080 348 870 659 923 435
090 392 980 733 1038 490
LD
C
B
R
E
A
ØD
12.DISPOSAL OF THE PRODUCT
Used product shall be disposed or recycled according to the local
laws and regulations.
Centriflow 3D GMPM, GMEB - Installation and Maintenance 10
FläktGroup DC_9853GB_20180425_R0 Specifications are subject to alteration without notice