Exhaust Fans: EM 30
 EM30
is the ideal exhaust fan whenever high airflow capacity is
required. The unique propeller design is self-cleaning and
allows the highest efficiency to be reached.
The square fan housing and air conveyor (venturi) are made
of a strong galvanised sheet-steel. The 6-blade propeller
is statically and dynamic balanced for low noise and low vibration.
The propeller is available in stainless steel, galvanised
steel and pre-coated and galvanised steel.
To improve aerodynamic efficiency, the fan has been developed
in 1Vluntcrs euroemme's R&D lab. The
test chamber has been built according to ANSI / AMCA
210-85 Figure 15 specifications. Construction details and
airtightness have been verified by personnel of the BESS Lab
at the Agricultural Engineering Department, University of
Illinois - USA.
Propeller and shutter
 The
propeller is attached to a large v-belt pulley in which is
embedded a double ball bearing protected against water. The
belt transmission ensures low propeller rpm, which ensures
high efficiency and low energy consumption as well as low
noise. The shutter is made of galvanised steel for all models,
which is stronger than aluminium and plastic. The fan shutter
is tightly closed when the fan is not working preventing any
air leakage through the fan. The patented centrifugal system
hinders the shutter from being closed by air pressure, keeping
the efficiency of the fan at a peak at all times by keeping
the shutter fully and firmly opened. The shutter does not
have to be cleaned regularly as dust does not affect its opening
and closing movement. All the plastic parts are made of acetalic
plastic with UV protection.
Equipment
- Fan housing and venturi made of strong galvanised sheet-steel.
- Shutters are made of pressed galvanised steel in order
to ensure highest strength.
- Each motor is individually tested for 100% quality control.
- Central hub and v-belt pulley are made from die-cast aluminium.
- Propeller is statically and dynamically balanced.
- Shutter bearings are maintenance free.
- Patented centrifugal system permits a fully and firm opening
of the shutter.
- Shutter is opened by rotating weights placed over cen.
trifugal system arms.
- Shutter opening is not affected by the weight of dust
deposited on shutter blades.
- A powerful couple of springs keep the shutters firmly
closed when the fan is not operating.
- Every fan is individually checked for quality.
Order information
EM30-X-X-X e.g., EM30-b-2-wp-wm
- b : Code for electric motor according
to above table.
- 2 : Code for the type of propeller blades.
- Galvanised propeller blades.
- Precoated propeller blades.
- Stainless steel propeller blades.
- wp-wm : Options codes
- wp: Fan equipped with plastic CE
protection for belt and pulleys (on mesh side, standard
in Europe)
- np: Fan delivered without plastic
CE protection for belt and pulleys (on mesh side, standard
outside Europe)
- wm: Fan delivered with pyramidal
shape mesh for CE protection on shutter side.
- nm: Fan delivered without pyramidal
shape mesh for CE protection on shutter side (standard)
Motor Specifications
EM 30
Code |
Nominal power |
Type
phases |
Speed |
Frequency
[hz] |
Voltage
[V] |
Current
[A] |
rpm |
| [w] |
[hp] |
| a |
370 |
0.5 |
1 |
single |
50 |
230 |
3 |
1,380 |
| b |
370 |
0.5 |
1 |
single |
50 |
230 |
3 |
1,380 |
| c |
370 |
0.5 |
1 |
single |
60 |
220 - 240 |
3.3 |
1,700 |
| d |
370 |
0.5 |
3 |
single |
50 |
230 / 400 |
2.3 / 1.3 |
1,400 |
| e |
370 |
0.5 |
3 |
single |
60 |
230 / 400 |
2.3 / 1.3 |
1,700 |
| f |
370 |
0.5 |
3 |
multi* |
50 |
230 / 400 |
2.6 / 1.5 |
1,380 |
| g |
370 |
0.5 |
3 |
multi* |
60 |
230 / 400 |
2.6 / 1.5 |
1,650 |
| h |
550 |
0.75 |
1 |
single |
50 |
230 |
4 |
1,400 |
| i |
550 |
0.75 |
1 |
multi* |
50 |
230 |
4 |
1,400 |
| k |
550 |
0.75 |
1 |
single |
60 |
220 - 240 |
4.4 |
1,700 |
| l |
550 |
0.75 |
3 |
single |
50 |
230 / 400 |
2.8 / 1.6 |
1,400 |
| m |
550 |
0.75 |
3 |
single |
60 |
230 / 400 |
2.8 / 1.6 |
1,700 |
| n |
550 |
0.75 |
3 |
multi* |
50 |
230 / 400 |
3.2 / 1.8 |
1,380 |
| o |
550 |
0.75 |
3 |
multi* |
60 |
230 / 400 |
3.2 / 1.8 |
1,650 |
| * Multi speed motors
must be regulated with auto-transformer which is not supplied.
|
Technical Specifications
| |
05 hp |
0.75
hp |
| Weight of fully equipped fan1 |
[kg] |
55 |
56 |
| Nominal propeller speed |
[rmp] |
590 |
640 |
| Airflow at 0 Pa1 |
[m3/h] [cfm] |
13,500 [7,945] |
14,550 [8,565] |
| Airflow at 20 Pa1 |
[m3/h] [cfm] |
11,950 [7,030] |
13,410 [7,890] |
| Specific performance at 0 Pa1 |
[m3/wh] [cfm/w] |
20.2 [11.8] |
17.9 [10.5] |
| |
| Propeller diameter |
[mm] [inch] |
760 [30] |
| Number of blades |
|
6 |
| Number of shutter blades |
|
7 |
| Max. operating temperature |
[°C] [°F] |
50 [122] |
| IEC protective class of electric motor |
|
IP55 |
| Electric motor winding insulation grade |
|
F |
1 All values refer
to 3 phases 50 Hz single speed motor.
N.B Airflow data are measured at standard condition (20
°C, 1013 hPa). |
EM 30
is developed and produced by Munters euroemme S.p.A., Italy.
|
