Geovent LSFG-146 User manual

Version 2.1 08.03.17
FAN
LSFG/MSFG 146 - 250
INSTRUCTION MANUAL
www.geovent.com

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Contents
1.0 General safety precautions...................3
1.1 Danger .................................3
1.2 Field of application . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Technical data ...........................3
1.4 Construction .............................4
1.5 Dimensions...............................5
1.6 Soundbox ................................5
1.7 Tabel....................................6
2.0 Installation ...............................6
2.1 Connection of fan to the mains ...............7
2.2 Connection of fan to the mains (freq. inv.) . . . . . . . 7
2.3 Optional equipment ........................7
2.4 Trial run – exact adjustment .................8
3.0 User instruction – application ................8
4.0 Maintenance..............................8
4.1 Trouble shooting ..........................8
5.0 Liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.0 Declaration of conformity ...................11
1.0 General safety precautions
IMPORTANT - Please study all the instructions before
mounting and commissioning.
This instruction manual is valid for MEF(I)/LEF(I) fans.
MEFI/LEFI is with integrated frequency inverter, while
the LEF/MEF is standard motor where an external fre-
quency inverter can be connected. More specific data
regarding frequency inverters can be found in the speci-
fic manual for the inverter.
Please keep these instructions in a safe place and in-
struct all users in the function and operation of the pro-
duct.
Do not dismantle any factory-mounted parts, as it
impedes the commissioning of the equipment.
All electrical installations must be carried out by an
authorised electrician
1.1 Danger
Explosive media – The Fan is not suitable for the extra-
ction of aluminium dust, flour, textile dust nor for saw-
dust or other media, which are connected with danger of
explosion, without specific approval from Geovent A/S.
Removing the protection net on the fan whilst in operati-
on involves a risk of mutilation.
Always switch off the current when mounting something
on the Fan or when servicing it.
1.2 Field of application
The GEOVENT fan LSFG is typically used for general
ventilation as well as for smaller process extraction jobs,
where a high pressure is not required. The Fan MSFG is
applied for process extraction within the industry for the
extraction of welding smoke, exhaust gasses, grinding
dust and vapours.
The Fan is neither suitable for the extraction of alumi-
nium dust, flour, textile dust nor for sawdust or other
media, which are connected with danger of explosion,
without prior, written approval from Geovent A/S.
1.3 Technical data
If the temperature of the extracted air exceeds 80°C,
special bearings must be used.
Please contact your dealer.
The sound level depends on various factors under vari-
ous circumstances. For instance, where in the room the
Fan has been installed, the size of the room, the tem-
perature in the room, the sound of the room and also
the connection (hose><pipe) of the Fan influences the
sound level of the Fan.
As a main rule, a sound box will reduce the actual sound
level to only half the level without a sound box.
The actual ampere consumption and the kW of the mo-
tor are shown on the metal sign on the Fan
Fans 1.400 min-1, noise emission to surroundings
Type Lp, dB(A) Lp, 1m
LSFG-146 51 45
LSFG-180 56 50
LSFG-200 61 55
LSFG-225 63 57
LSFG-250 67 61
Fans 2.800 min-1, noise emission to surroundings
Type Lp, dB(A) Lp, 1m
MSFG-146 69 63
MSFG-180 74 68
MSFG-200 78 72
MSFG-225 81 75
MSFG-250 84 78
Temperature extracted air Max 80°C
Temperature surroundings Max 40°C
MSFG-180-3
Description
No. of phases
Wheel diameter mm
Gavalnized
Flange motor
Scirocco wheel
Motor speed.
M=2800 L=1400 Rpm

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Noise
Fans 1.400 rpm, noise emission to the surroun-
dings
Type Lp, dB(A) Lp, 1m
LSFG-146 51 45
LSFG-180 56 50
LSFG-200 61 55
LSFG-225 63 57
LSFG-250 67 61
Fans 2.800 rpm, noise emission to the surroun-
dings
Type Lp, dB(A) Lp, 1m
MSFG-146 69 63
MSFG-180 74 68
MSFG-200 78 72
MSFG-225 81 75
MSFG-250 84 78
The sound level depends on various factors under vari-
ous circumstances. For instance, where in the room the
Fan has been installed, the size of the room, the tem-
perature in the room, the sound of the room and also
the connection (hose><pipe) of the Fan influences the
sound level of the Fan.
For more sound measurements – see www.geovent,-
com (data sheet for LSFG/MSFG-146 – 250).
Where emitted noise can cause a nuisance, the fan must
be shielded, for example. by placing it in a sound box.
Pressure drop for fans LSFG/MSFG
1.4 Construction
Fan housing: 100% galvanized steel for optimal corrosi-
on resistance. Brackets are standard on all fans as well
as inlet nozzle with safety net.
Impeller: Fan wheel: Forward curved sirocco-fan wheel
(F-wheel) in hot-galvanized sheet metal.
Motor: B5 flange motor, directly driven in protection
class IP 54.
Console:
5.5kW motors and above or heavy custom motors
come with a supporting console to carry the weight of
the fan.
Flange motor B5
Inlet with
mesh
Fan housing Feet with
vibration
dampers
Scirocco wheel

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1.5 Dimensions
Table of dimensions LSFG/MSFG 146 - 250
NB: This data is present for standard fan LSFG/MSFG
146-250. If there is eny change please look at your in-
voice.
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
Type 146 180 200 225 250
A 245 300 350 370 410
B 400 400 400 500 500
C 295 350 400 450 500
D 160 160 200 250 250
E 145 168 180 195 215
F 134 165 205 210 230
G 113 135 165 190 210
H 360 360 360 460 460
I 178 178 205 219 300
J 95 120 130 145 170
K 185 225 250 280 320
L 27 27 27 27 27
M 402 527 577 597 637
N 118 138 150 165 185
Weight 12 kg 14 kg 18 kg 24 kg 38 kg
1.6 Soundbox
Soundbox - optional
Sound box is optional and ordered together with the fan.
A sound box can general reduce the noise level. 8–12
Db(A)
Besides soundproffing, the sound box will also protect
the fan against wind and weather.
The Soundbox is made of galvanised plate and supplied
with 50 mm thick insulating materials (glass wool). In-
side the box is lined with a galvanised and perforated
steel plate.
Furthermore, a sound absorber is saved on the suction
side, since this sound absorber is built-in by means of
the front suction chamber. The box is supplied with an
ø80 mm air inlet on the suction side for the cooling of
the motor.
Example

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1.7 Table
Table soundbox 146 - 250
Type 146/180 200 225 250
B 470 510 560 620
H 405 455 475 510
L 720 820 910 1015
øD 160 200 250 250
E 205 230 240 260
P 230 355 285 330
M 362 410 465 510
J 230 255 280 325
C 190 200 215 245
I 105 100 105 105
Vægt 29 kg 35 kg 43 kg 49 kg
OBS: Use gloves when you are handling the soundbox.
1.6 Rain cover
Rain cover is optional and ordered together with the fan.
If the fan is placed outdoors, exposed to heavy rain, it is
recommended to protect the motor with a rain cover
2.0 Installation
The Fan is supplied assembled and ready for connecti-
on to piping and to the mains.
Before mounting the Fan, please make sure that the
optimum installation area is selected.
Is there space enough for carrying out satisfactory in-
stallation/service of the fan? What about optimum con-
nection possibilities for piping and automatics?
If at all possible, please avoid bends just before the inta-
ke and after the outlet, since since this may reduce the
effectivity of the fan.
For outdoor mounting, any noise nuisances for neigh-
bours should be taken into account and also ensure that
the motor is kept out of heavy showers.
Drill holes in motor housing and remove drain plugs from
the motor..
The following installation should only be carried out by
a trained fitter.
Procedure:
1. The Fan is solidly fixed to the roof/floor or to a ceiling
bracket or wall bracket (see above). The Fan is fixed
by attaching the vibration dampers with 4 off M8
bolts. The fan is to be mounted in one of the shown
ways. Do not install the Fan with the intake in vertical
direction.
2. The piping is connected to the fan. On the inlet side,
the pipe may be fastened by means of self cutting
screws. Remember to seal the connection with filler!
E
I
H
øD
Stuts

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3. On the outlet side, the pressure connecting piece
(optional equipment) is attached to the Fan by me-
ans of the supplied clamps. Remember to seal the
connection with filler!
4. The pressure connecting piece is then attached to
the piping on the outlet side by means of self-cutting
screws. Remember to seal the connection!
2.1 Connection of the Fan to the mains:
5. The Fan should only be connected to the mains by
a certified electrician and a motor protection switch
should always be used.
6. Our 3-phase motors may be configured to both 3x230V
and 3x400V. From the factory, the motor has not been
configured and the enclosed metal cover plates are
to be mounted in such a way in the terminal box that
they fit the voltage.
NB: The coupling diagram below is guiding.
7. Circuit diagram 1-phase motor1x230V 50Hz (nonad-
justable)
8. Circuit diagram 4 KW motor MSFG-250-3
230V...280V 50/60 Hz
400...480V 50/60 Hz
Always double check the metal sign on the motor
and the inside of the cover for current configura-
tions (diagram).
2.3 Installation of optional equipment
Mounting of sound box
From the factory, the Fan will be installed in the sound
box (optional equipment). The box must be mounted on
horizontal surfaces and may only be mounted with ver-
tical outlet.
Mounting of frequency converter
Our standard 3-phase motors are particularly suitable
for frequency converter operation
Suggested application – frequency inverter
Installation of frequency inverter
Our standard 3-phased LEF/MEF fans are highly sui-
table for operation with frequency inverter allowing for
pressure control and speed control.
Draft of installation with frequency inverter:
3x400...480V 50/60Hz
3x690V...830V 50/60 Hz

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Draft of installation with pressure guard and motor
guard:
Draft of installation with potentionmeter:
2.4 Trial run – exact adjustment
After the installation has been completed, please check
whether there are any vibrations in the Fan.
We recommend checking whether the Fan supplies the
correct volume of air, for which the equipment has been
dimensioned. I.e. control the volume of air and make
sure that it does not exceed the ampere capacity of the
motor.
3.0 User instruction – application
When extracting large quantities of air, containing dust,
the fan wheel may get out of balance due to dirt on the
wheel. In order to avoid this, we recommend using a fil-
ter.
In many cases, the fan is started by pushing the green
button on the motor protection switch (if automatics are
not used).
The Fan does not work according to the purposes, if:
- unauthorised parts have been mounted on the Fan
(e.g. unauthorised wheel).
- the wheel runs in the wrong direction. It will still work,
but the capacity will be reduced to a third of the normal
capacity.
- no motor protection switch is used
4.0 Maintenance
Periodic maintenance
In principle, the motor is maintenance-free becau-
se of the factory-mounted, completely closed special
ball bearings, which do not require any maintenance.
Replacement of worn bearings should only be handled
by an electrician.
The wheel and the fan housing should be cleaned every
year or according to requirement. The wheel and the
housing may be cleaned by means of a soft brush and
detergent. Remember to disconnect the power before
the washing and to wipe the parts afterwards with a dry
cloth. This operation results in a longer life of the fan.
Access to the inside of the fan housing and the impeller,
can be gained by screwing off the umbracko screws on
the back of the fan.
Remember to always cut the power.
4.1 Trouble-shooting
Remember to always use a motor protection switch!
Always use adjustment damper!
In case of problems with the Fan, the following items
may be reviewed in order to check whether:
The volume of air or the pressure is too low:
- Wrong direction of operation of the wheel. May be due
to wrong electrical installation. Please double-check
the direction of rotation. Change two phases, if neces-
sary.
- Leaky channel system.
- Poor inlet/outlet possibilities near the Fan may reduce
the yield (e.g. 90° bend before the inlet).
- Damaged wheel.
- The rotation speed has been set lower.
- If the temperature deviates substantially from the lab
measurements, where the temperature was 20°C with
an atmospheric pressure of 101.4 kPa.
- The dampers have not been correctly adjusted.
- The central lid on the sound box is turned the wrong
way and thus blocks the air.
- The suction net has been blocked by cotton waste, a
cloth or the like.
Vibrations and noise
- The base is not even/stable.
- Elements coming from the outside are stuck in the
Fan.
- Damaged wheel or motor.
- The wheel is loose.
- The wheel may have become unstable, for instance as
a result of dirt on the impellers.
- The wheel is rotating in the wrong direction.
The Fan supplies more air than for which the equip-
ment has been dimensioned. Use adjustment damper.
motor guard
Terminal box
Channel - Spiro duct
Suction tube
Frequency
inverter

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- Loose bolts or screws.
The motor is overtaxed
- The cabling of the motor is not correct.
- The shaft has been bent.
- The fan has over-capacity in relation to the resistance
in the system. Use adjustment damper.
- The speed of the motor is too high.
- Defective motor – please contact your dealer!
5.0 Liability
Warranty
Geovent A/S grants a warranty for products, which are
defective, when it can be proved that the defects are
due to poor manufacture or materials on the part of Ge-
ovent. The warranty comprises remedial action (repara-
tion or exchange) until one year after date of shipment.
No claims can be made against Geovent A/S in relation
to loss of earnings or consequential loss as a result of
defects on products from Geovent.
Wear parts like fan impellers are not included in the
warranty.
User liability
In order for Geovent to be capable of granting the de-
clared warranty, the user/fitter must follow this manual
in all respects.
Under no circumstances may the products be chan-
ged in any way, without prior written agreement with
Geovent A/S.

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6.0 EF-HOVEDGADEN 86 • DK-8831 LØGSTRUP
([phone] • [email protected]
Hereby declares that:
The product: Fan
Models: LSFG/MSFG 146 - 250
has been manufactured in compliance with the
directions of the Directive Council 2006/42/EEC, regar-
ding machine safety, changes of directive 95/16/EEC
and following standards:
Council Directive 2006/42/EC (May 17, 2006) of the
European Parliament on machinery, and amending Di-
rective 95/16/EC.
EN ISO 14121-1:2007 Safety of machinery - Risk asses-
sment - Part 1: Principles
EN ISO 12100-1:2005 Safety of machinery - Basic con-
cepts, general principles for design
EN ISO 12100-1:2009 Construction and design
Part 1: Terminology, methodology
EN ISO 12100-2:2005 Basic concepts, general princip-
les for design
EN ISO 12100-2:2009 Construction and design
Part 2: Technical principles
Date: 08.03.17
Position: Managing Director
Name: Thomas Molsen
Signature: ____________________________
6.0 Declaration of conformity

HOVEDGADEN 86 • DK-8831 LØGSTRUP
([phone] • [email protected]