PUR (A, B, C, D)
SLIDE IN ROTOR CASSETTE
CENTRIFLOW 3D FLOOR MOUNTED PLUG FAN
WITH EC MOTOR
CONTENT PAGE
1. Important information ........................................................................ 2
2. Safety notes .......................................................................................... 2
3. Technical description ........................................................................ 2
4. Transport ................................................................................................ 3
5. Mounting instructions ........................................................................ 3
6. Commissioning .....................................................................................4
7. Maintenance ...........................................................................................4
8. Faults ....................................................................................................... 5
9. Spare parts ........................................................................................5
10. Recommended distances ................................................................ 5
11. Air flow measurement ....................................................................6
12. Disposal of the product ..................................................................6
13. Declaration of conformity .............................................................. 7
FläktGroup DC_10332GB_20190412_R0
Specifications are subject to alteration without notice
CENTRIFLOW 3D PLUG FAN GMEC-1
INSTALLATION AND MAINTENANCE
3. TECHNICAL DESCRIPTION
The fan is used to generate a desired air volume at a given pres-
sure rise that corresponds to the pressure losses in the duct
system to which the fan is connected, and internal losses inside
of the Air Handling Unit.
The plug fan is intended to be used inside of the Air Handling Unit.
3.1 DESIGN
IMPORTANT INFORMATION, SAFETY NOTES, TECHNICAL DESCRIPTION
1. IMPORTANT INFORMATION
FläktGroup fans comply with the requirements for health and
safety of the EC Machinery Directive.
All fans leave the factory after being subjected to testing.
These instructions are intended for use by professional service
staff. The installation, commissioning and operation of the fans
must be carried out by professional staff who are familiar with
the safety regulations.
Tools and protective equipment necessary for preventing acci-
dents from occurring while installing and operating the fan must
be used/worn in accordance with the local safety regulations.
All personnel involved with the product must carefully study this
operating manual and diligently comply with all orders and in-
structions.
FläktGroup does not accept responsibility for any damage that
can be attributed to non-observance of these instructions.
The warranty issued by the manufacturer will be forfeited if any
changes to the product are made without the manufacturer’s
consent.
2. SAFETY NOTES
This symbol is designed to point out all safety and
danger related information regarding danger on the
operating personnel’s lives and health.
3.2 OPERATING CONDITIONS
The standard operating temperature range of the fan is –25 °C
- +40 °C. The maximum permissible ambient temperature of the
motors is +40 °C.
The fans are designed to be used as parts of equip-
ment. They are not ready for use as a stand-alone
product and the standard version does not have
protection against body contact, the appropriate
protective measures are to be taken according to EN
292/294.
Only operate the fan up to the maximum permissible speed given
in the information on the fan rating plate.
3.3 MOTORS
Centriflow 3D GMEC-1 fans are supplied with high efficiency (IE4)
permanent magnet external rotor EC-motors. The high efficiency
is based on permanent magnets which eliminate rotor losses and
therefore less magnetizing current is needed.
Motors are equipped with integrated control electronics and
speed can be controlled by using either 0 - 10 V control signal or
the MODBUS-RTU interface for communication.
The impeller is fastened directly to the motor.
1. Front plate
2. Inlet cone
3. Impeller
4. Motor bracket
5. Motor
6. Base frame
1
2
3
4
5
6
CentriFlow 3D GMEC-1 - Installation and Maintenance
2
FläktGroup DC_10332GB_20190412_R0
Specifications are subject to alteration without notice
TRANSPORT, MOUNTING INSTRUCTIONS
4 TRANSPORT
4.1 TRANSPORT INSPECTION
Check the fan immediately after you receive it and make sure that
it has not been damaged during transport. If you discover any
damage, get in touch with the transportation company without
delay. Briefly rotate the fan impeller to see that it rotates easily.
Check the information on the fan rating plate.
Proper procedures must be followed when transporting the product!
Faulty conditions in transporting may result in serious damage on
the product
4.2 TRANSPORT SAFETY
The transport mode is to be selected according to the packaging
and the weight of the product. Loading must be carried out as
instructed.
4.3 INTERMEDIATE STORAGE
If the fan is to be stored before or in between uses, the following
needs to be taken into account:
– Original packaging is to be used. If the storage conditions re-
quire it, additional protection may be added
– The storage environment must be dry, dust-free and not have
a high level of humidity (<70%)
– Storage temperature must be in between –25 °C and +40 °C
Before commissioning, the respective instructions must be
studied thoroughly.
4.4 LIFTING OF THE FAN
The fan is to be lifted with three chains/beams (one attached to
the front plate and two to the rear end of the fan). Use the holes
on the motor bracket as shown in the picture below.
Beware of damaging the fan while lifting. Always adjust chains/
beams long enough not to get in touch with the impeller.
5 MOUNTING INSTRUCTIONS
5.1 INSTALLATION OF THE FAN
The fan is to be installed to a base frame using anti-vibration
mountings. Alternatively the base could be mounted on anti-
vibration mountings.
The base must be level and stable. The fan must only be mounted
in a horizontal plane.
5.2 FITTING THE ACCESSORIES
The fan should normally be connected to the air handling unit by
means of flexible connection or other type of a gasket to elimi-
nate vibration transfer from fan to the AHU casing.
Providing necessary grounding for the accessories is within the
constructor’s field of responsibility.
Inlet protective screen can be fitted directly to the front frame or
outside AHU to the inlet opening.
5.3 GROUNDING
Motor is grounded through the motor power supply cable.
If extra grounding is needed, grounding can be carried out with
a separate cable from the fan motor to the casing of the Air
Handling Unit. The motor has a grounding marking next to the
grounding point (View A).
Extra
Grounding
Cable
5.4 ELECTRICAL CONNECTIONS
All electrical connections must be wired by authorized personnel
only. The necessary electrical and safety precautions must be
taken into account. Connections must be carried out according to
the instructions, see separate Controls Instructions for GMEC fans.
CentriFlow 3D GMEC-1 - Installation and Maintenance
3
FläktGroup DC_10332GB_20190412_R0
Specifications are subject to alteration without notice
7. MAINTENANCE
7.1 WARRANTY
A precondition of the warranty is that regular maintenance has
been carried out. Defects under warranty must immediately be
notified to the manufacturer or the importer. The warranty does
not cover service work or indirect damages.
7.2 MAINTENANCE
7.2.1 BEFORE MAINTENANCE
Switch off the power supply to the fan at the safety switch and
wait until the impeller is fully stopped.
7.2.2 INSPECTION
The fan is to be inspected at least once a year.
7.2.3 CHECKING THE MOTOR
Inspect that there are no visible damages on the fan or the motor.
7.2.4 IMPELLER
The impeller can be cleaned by using a vacuum cleaner, com-
pressed air or by brushing. If the impeller is coated with greasy
dirt it can be washed with a detergent or a solvent.
The cleaning is to be performed at least once a year. Badly tar-
nished impeller will result in lower efficiency of the fan and in-
creases energy consumption.
The maximum permissible vibration levels measured in situ
according to ISO 14694 are:
Vibration level Alarm Shutdown
BV-2 (below 3.7 kW) 14 15
BV-3 (over 3.7 kW) 11,8 12,5
Values are RMS-values in mm/s measured on the motor.
7.3 REPLACING THE FAN
Replace the fan unit in case of failure. The impeller and the motor
cannot be changed.
The fan has to be disconnected before removing.
6. COMMISSIONING
6.1 SAFETY CHECKING
- Check that the impeller rotates freely.
– Make sure that there are no foreign objects in the fan or in the
Air Handling Unit.
– Also check that there is no unusual noise in the fan or motor.
– Check that the installation work has been carried out in ac-
cordance with the relevant regulations.
– Cables and air flow measurement tubes must be attached so
that they do not touch the impeller
– All necessary protective devices must be installed.
– The fan may only be commissioned after all proper procedures
have been followed and all necessary inspections have been
carried out.
6.2 TEST RUN
Briefly switch on the power supply to the motor to check whether
the fan impeller rotates in the correct direction. If the impeller is
rotating in the correct direction, the fan may be switched on.
Check that no abnormal mechanical sound and no surging occur.
MOUNTING INSTRUCTIONS , COMMISSIONING, MAINTENANCE
CentriFlow 3D GMEC-1 - Installation and Maintenance
4
FläktGroup DC_10332GB_20190412_R0
Specifications are subject to alteration without notice
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
A complete fan is available as a spare part. No separate parts
are available. For more information please contact FläktGroup
sales unit.
FAULTS, SPARE PARTS, RECOMMENDED DISTANCES
H
W
E
L
Ø
imp
H
W
2W
W/2 W/2
One fan installed in AHU
Two fans installed in AHU
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:
Fan size W H Øimp L E
025 440 540 218 410 200
028 500 600 248 460 200
031 560 660 278 540 200
035 630 730 312 610 200
040 710 810 352 680 200
045 800 900 397 770 300
050 900 1000 446 870 300
056 1000 1100 496 960 300
CentriFlow 3D GMEC-1 - Installation and Maintenance
5
FläktGroup DC_10332GB_20190412_R0
Specifications are subject to alteration without notice
11. AIR FLOW MEASUREMENT DEVICE
The CentriFlow 3D fans are equipped with an air flow measure-
ment device as standard. The measurement method is based
on differential pressure between the fan inlet cone and the suc-
tion chamber upstream of the fan. The air flow sensor nipple is
supplied as factory mounted in the inlet cone but the reference
pressure sensor has to be positioned inside the suction cham-
ber upstream of the fan in a place without instable flows (i.e. in
the suction chamber corner). The air flow sensor is suitable for
pneumatic hoses with inner diameter of 5 mm.
11.1 SINGLE FAN
AIR FLOW MEASUREMENT DEVICE, DISPOSAL
q
v =
1
k
∆p
m
x
q
v =
k
N
∆p
m
x
GMEC-1 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
12.DISPOSAL OF THE PRODUCT
Used product shall be disposed or recycled according to the local
laws and regulations.
Δp
m
The air flow of a single fan can be calculated as a function of
coefficient k and the differential pressure manometer reading
Δpm by the following formula:
q
v
= air flow, m
3
/s
k = k-factor, see table below
Δp
m
= differential pressure, Pa
11.2 MULTIPLE FANS IN PARALLEL (FAN WALL)
When using multiple fans in parallel the total air flow can be
measured by connecting the pneumatic hoses from the fans
together as shown in picture below and calculating the air flow
by following formula using the same k factors as used with single
fan:
𝑚
N = number of fans in parallel
Please note that this requires that all the fans are running. If the
air flow needs to be measured when all the fans are not running
simultaneously the differential pressure measurement has to be
taken from all the fans separately and adding the measured air
flows together to get the total air flow.
11.3 ACCURACY
The air flow measurement device has an accuracy of ±10 % in
measured air flow when the fan is installed so that stable inflow
conditions are secured. The accuracy can be improved by cali-
brating the k factor on site. When there is a side connection or
some other obstacle or rapid flow direction change upstream of
the fan that can cause instable flow pattern to the fan inlet, the
accuracy can be improved by using the air flow measurement
device with 4 pressure nipples (available as an accessory).
Air flow measurement, one fan
Δpm
Air flow measurement, two fans
CentriFlow 3D GMEC-1 - Installation and Maintenance
6
FläktGroup DC_10332GB_20190412_R0
Specifications are subject to alteration without notice
13. DECLARATION OF CONFORMITY
EC Declaration of incorporation for Partly Completed machinery
Machinery Directive 2006/42/EC, Annex II, sub B
Manufacturer: FläktGroup Finland Oy
Address: Kalevantie 39
FI-20520 Turku, Finland
Name and address of the person authorised to compile the relevant technical documentation:
Name: Heikki Stenberg Address: as above
The design of the Partly Completed Machinery:
GMEB / GMPM /GMEC, GMMB and GPMB with accessories
Induction AC motor
Induction AC motor with VSD
Electronically commutated external rotor motor with integrated controller
Permanent magnet motor with VSD
The following essential requirements of the Machinery Directive (2006/42/EC) are applied and fulfilled:
1.1.2, 1.1.3, 1.1.5, 1.5.1
The specific technical documentation in accordance with Appendix VII B has been written and is available.
The specific documentation will be transmitted to a reasoned request by national authorities.
And that this partly completed machinery is in conformity with the provisions of the following other EC-
Directives:
2014/35/EU Low Voltage Directive
2014/30/EU EMC-Directive
2009/125/EC ErP Directive
(EU) 2017/2102 RoHS Directive
And furthermore, declares that
the following (parts/clauses of) European harmonised standards have been
applied: EN ISO 12100:2010, EN ISO 13857:2008, EN 61000-6-2:2011, EN
61000-6-3:2011 and ISO EN 5801
This partly completed machinery must not be put into service until the final machinery into which it is to be
incorporated has been declared in conformity with provisions of the Machinery Directive 2006/42/EC, where
appropriate.
Turku,1.9.2018 Heikki Stenberg
R&D Manager
CentriFlow 3D GMEC-1 - Installation and Maintenance
7
FläktGroup DC_10332GB_20190412_R0
Specifications are subject to alteration without notice
FG_DC-10332GB_Centriflow 3D GMEC-1_IN-MA_190412_R0 © Copyright 2019 FläktGroup
WWW.FLAKTGROUP.FI GMEC-1 10332
» Learn more on www.flaktgroup.com
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