PUR (A, B, C, D)
SLIDE IN ROTOR CASSETTE
GMEB-8 PLUG FAN WITH Ex de MOTOR
CONTENT PAGE
1. Important information ........................................................................ 2
2. Safety notes .......................................................................................... 2
3. Technical description ........................................................................ 3
4. Transport .................................................................................................4
5. Mounting instructions ........................................................................ 5
6. Commissioning .....................................................................................7
7. Maintenance ........................................................................................... 7
8. Faults ..................................................................................................... 10
9. Spare parts ......................................................................................10
10. Recommended distance to other components ..................... 10
11. Air flow measurement device ....................................................10
12. Product code ....................................................................................11
13. Disposal of the product .................................................................11
14. Declaration of conformity ............................................................ 12
FläktGroup DC_10367GB_20191209_R0
Specifications are subject to alteration without notice
GMEB-8 PLUG FAN
INSTALLATION AND MAINTENANCE
REVISION INDEX, IMPORTANT INFORMATION, SAFETY NOTES
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. Only FläktGroup accepted professionals are permitted to
replace the motor and impeller.
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.
Revision Date
REVISION INDEX
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TECHNICAL DESCRIPTION
3.2 OPERATING CONDITIONS
The equipment is a centrifugal fan without casing designed for
use as a fan in an Air Handling Unit. The fan is driven by a flame-
proof enclosure electric motor type Ex de, which has been certi-
fied by a notified body as category 2 temperature class T4 electri-
cal equipment and is suitable for the potentially explosive atmos-
pheres surrounding also together with a frequency converter.
Fan group: Group II
Category: Category 2G
Zone: 1
Gas group: IIB, optional IIB+H
2
Delivered medium: Only gas, max oxygen rate 21 %
Medium temperature: Max +40°C
Temperature class: T4
Equipment protection level: Gb
Motor: Ex de-type with surface temperature
sensor, temperature class T4
Fan marking:
1. Front plate
2. Inlet cone
3. Impeller and hub
4. Motor
5. Base frame (sheet steel)
6. Base frame (steel profile, welded)
7. Motor bracket
8. Front plate support (sizes 056, 063 and 071)
9. Front plate support
10. Transverse support beam (not in all combinations)
11. Grounding spot in motor
Sizes ≤071, motor IEC ≤112 Sizes ≤071, motor IEC ≥132
Sizes 080-090
3. TECHNICAL DESCRIPTION
The fan is used to generate a desired air volume at a given
pressure 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
1
2
3
4
7
8
510
11
7
9
11
6
1
2
3
4
6
9
7
11
1
2
3
4
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FläktGroup DC_10367GB_20191209_R0
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TECHNICAL DESCRIPTION, TRANSPORT
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 packag-
ing 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
4.4.1 SIZES ≤071, MOTOR IEC ≤112
The fan is to be lifted with three lifting chains/beams (one
attached to the front plate and two to the rear end of the fan).
There are two alternative places to attach the rear lifting hooks
as shown in the picture below. Beware of damaging the fan while
Sizes ≤071, motor IEC ≤112
3.3 MOTORS
The GMEB-8 fans are supplied with IEC standard IE2 motors.
The motor is a flameproof enclosure electric motor type Ex de
equipped with thermistor to control the surface temperature and
to be used with VSD, which is not included in the delivery. The
motor temperature class is T4.
Motor marking: II 2G Ex de IIB T4 Gb or
II 2G Ex de IIC T4 Gb
The fans are designed to be used as parts of
equipment. They are not ready for use as a stand-
alone product and the standard version does not
have protection against body contact. The appro-
priate protective measures are to be taken accord-
ing to EN 12100:2010.
The fan is only intended for the conveyance of air
in zone 1 category 2 explosive atmospheres, the
conveyance of solid matter or solids content in the
handled conveyance medium is not permitted.
3.2.1 MAXIMUM RATINGS
The standard operating temperature range of the fan is
-20...+40°C.
The maximum permissible ambient temperature of the motor is
+40°C.
Only operate the fan up to the maximum permissible speed, pres-
sure and other conditions given in the fan technical manual.
Maximum allowed vibration levels:
Motor power Max mm/s RMS
< 3,7 kW 6,3
≥ 3,7 kW 9,0
These vibration velocities are to be measured in radial direction
on the bearing casing of the motor.
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TRANSPORT, MOUNTING INSTRUCTIONS
lifting. Always adjust chains/beams long enough not to get in
touch with motor or fan impeller. Transverse beam must be used
if needed.
4.4.2 SIZES ≤071, MOTOR IEC ≥132
The fan is to be lifted with four lifting chains/beams, two attached
to the front plate supports and two to the motor bracket. See pic-
ture below. Beware of damaging the fan while lifting. Always ad-
just chains/beams long enough not to get in touch with motor or
fan impeller. Transverse beam must be used if needed.
Sizes ≤071, motor IEC ≥132
4.4.3 SIZES 080-090
The fan is to be lifted with four lifting chains/beams, two attached
to the front plate supports and two to the motor bracket. See pic-
ture below. Beware of damaging the fan while lifting. Always ad-
just chains/beams long enough not to get in touch with motor or
fan impeller. Transverse beam must be used if needed.
Sizes 080-090
5. MOUNTING INSTRUCTIONS
5.1 INSTALLATION OF THE FAN
The fan is fixed to a base by bolts in mounting holes across the
anti vibration mountings. The base must be level and stable. The
fan must only be mounted in a horizontal plane and to be aligned
horizontally. ATEX certified flexible connection must be used.
All bolt connections must be secured using thread locking glue,
lock nut or locking washers. Residual risk due to inappropriate
behaviour or malfunction during operation cannot be completely
excluded. The system planner or constructor must prevent the
emergence of any hazardous situations through suitable safety
measures.
5.2 FITTING THE ACCESSORIES
The fan should normally be connected to the Air Handling Unit by
means of a flexible connection.
Providing necessary grounding for the accessories is within the
constructor’s field of responsibility. All bolt connections must be
secured by thread locking glue, lock nut or locking washers.
Inlet protective screen shall be used if there is a risk of foreign
particles getting into the fan and being a potential risk.
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5.3 SAFETY REGULATIONS AND CE-MARKING
MOUNTING INSTRUCTIONS
Grounding spot in motor
Grounding cable (not included in fan delivery)
To be attached
to AHU base etc.
The GMEB-8 fan is CE marked as Partly
Completed Machinery and must not be put into
service until the final machinery into which it
is to be incorporated has been declared in con-
formity with provision of the Machinery Direc-
tive 2006/42/EC. Other compliant Directives are
shown in the Declaration of Conformity.
5.4 ELECTRICAL CONNECTIONS
All electrical connections must be wired by authorised person-
nel only. The necessary electrical and safety precautions must be
taken into account. If the motor is operated across a frequency
converter, the connections must be made according to the in-
structions of the frequency converter manufacturer. The motor
must be grounded using the marked mounting spot on the motor,
see the picture below.
5.5 GAP DIMENSIONS OF THE FAN
ATEX motor thermistors must be connected to a thermistor cir-
cuit relay functioning independently and that is dedicated to reli-
ably trip off the supply to the motor according to the requirements
of the Safety requirements of the “Essential Health and Safety re-
quirements” in Annex II, item 1.5.1 of the ATEX Directive 2014/34/
EU. According to the local installation rules, it may be possible to
also connect the thermistor to equipment other than thermistor
relay; for example, to the control inputs of a frequency converter.
Overlap
Gap
Inlet cone
Impeller
Fan size Gap
(nominal)
Gap
(minimum)
Overlap
025 3,0 2,0 4,5
028 3,0 2,0 5,0
031 3,2 2,0 5,6
035 3,3 2,0 6,3
040 3,5 2,0 7,1
045 3,7 2,0 8,0
050 3,9 2,0 9,0
056 4,0 2,0 10,0
063 4,2 2,0 11,2
071 4,8 2,2 12,6
080 5,3 2,5 14,2
090 5,9 2,8 16,0
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COMMISSIONING, MAINTENANCE
6. COMMISSIONING
6.1 SAFETY CHECKING BEFORE USE
• Rotate the shaft and check that the impeller can move freely.
• Make sure that there are no foreign objects in the fan or in the
ducting.
• Also check that there is no unusual noise in the fan.
• Check that the installation work has been carried out in
accordance with the relevant regulations and all bolt
connections are properly tightened and secured (see points
5.1 and 5.2).
• Check the gap between static and rotating parts at least in
four angles (90° steps) using a suitable feeler gauge.
Minimum gap is shown in table, see point 5.5.
• All necessary protective devices must be installed.
• Check the electrical connections.
• Check that the ambient temperature is within permissible
range of the fan, see point 3.2.1.
• The fan may only be commissioned after all proper proce-
dures 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, vibration and surging
will occur.
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 has come to a full halt.
Ensure that the impeller is surely still
before and during the maintenance work.
7.2.2 INSPECTION INTERVALS
Pos Description
Fan quarterly cyclic
on
demand
1Check impeller for damage and unbalancing,
vibration check
x
2Check deposit, damage, corrosion and fixing x
3Check proper rotation of impeller x
4Check the gap between the inlet and the
impeller
x x
5Measure vibration level x x
6Check the A/V mountings x
7Check safety devices x
8Check flexible connections x
9Check that the impeller fixing end bolt is
properly tightened to the motor shaft
x
10 Clean impeller, if dirty x
Motor
1Check bearing noise x x
2Lubricate bearing if needed x
3Check proper rotation of motor shaft x
4Visual control x
5Check that the electrical connections are
tightly fixed
x
6Clean motor cooling bars x x
GMEB-8 Installation and Maintenance
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2. Release the impeller from the motor shaft by loosening the
clamp screw and removing the end bolt and washer.
MAINTENANCE
1. Sizes 025…071, with motor IEC 112 or smaller.
Detach the front plate supports from the front plate (only in
sizes 056…071, remove entirely if needed) and remove the
front plate and inlet cone (front plate and inlet cone are per-
manently riveted to each other in fans without painting).
or
All sizes with motor IEC 132 or bigger.
Detach the triangular front plate supports from the front plate
(remove entirely if needed) and remove the front plate and in-
let cone (front plate and inlet cone are permanently riveted to
each other in fans without painting).
NOTE! Keep contact washers in good safe, they must be replaced
exactly as they were!
7.2.3 CHECKING THE MOTOR BEARINGS
The motors are suitable for operation in dry or humid air at ambi-
ent temperature of max. 40 °C. The motor bearings have to be lu-
bricated in accordance with the instructions that accompany the
motor. Bearings are to be replaced in accordance with the motor
manufacturer’s instructions.
7.2.4 IMPELLER
The maximum permissible vibration levels measured in radial
direction on the bearing casing of the motor are given in section
3.2.1. The impeller can be cleaned by using a vacuum cleaner,
or damp cloth. If the impeller is coated with greasy dirt it can be
washed with a detergent or a solvent.
The impeller must be cleaned if necessary but in addition a con-
trol inspection should be carried out at least once a year. A badly
tarnished impeller will result in lower efficiency of the fan and in-
crease energy consumption.
If the impeller is getting dirty, protection is not
good enough and a risk of ignition may follow. It
can cause an ignition risk.
End bolt and
washer
Clamp screw
7.3 REPLACING THE MOTOR AND THE IMPELLER
Only FläktGroup accepted professionals are
permitted to replace the motor and impeller.
The serial number of the replacement motor has to
be supplied to the service department of
FläktGroup Finland Oy
The fan has to be disconnected and taken out from the unit be-
fore the motor and impeller can be replaced.
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MAINTENANCE
3. If needed, use an extraction tool to pull the impeller off the
motor shaft. There is a groove in the impeller hub for the ex-
traction tool. With bigger sizes it is recommended to support
the impeller.
Size of the extraction tool needed depends on the impeller
size. Please follow the general instructions of the extraction
tool carefully.
4. Dismantle the old motor from the motor bracket.
5. Mount a new motor to the motor bracket, do not tighten the
fixing bolts. Remember to replace the contact washers exactly
as they were.
6. Clean the motor shaft and the impeller hub hole. Use of lubri-
cation is recommended.
7. Mount the impeller on the motor shaft. Renew the thread lock-
ing gluing to clamp screw and end bolt. Check that the end
bolt locking washer is on its place, replace if needed. Check
that the motor shaft key is installed.
8. Mark the needed overlap in the inlet cone, see table at section
5.5.
9. Mount the front plate and inlet cone. Renew the thread locking
gluing to all fixing bolts/screws and remember to replace the
contact washers exactly as they were.
10. Mount the front plate supports (when applicable). Renew the
thread locking gluing to all fixing bolts/screws and remember
to replace the contact washers exactly as they were.
11. Align the impeller carefully and check the gap between the
impeller and the inlet cone (as instructed in section 6.1). Also
check that the overlap is correct.
12. Tighten the motor fixing bolts (renew the thread locking gluing
to all bolts).
7.4 FINAL INSPECTION
Check that:
• Gap and overlap between impeller and inlet cone are correct,
see section 5.5.
• Impeller rotates in correct direction (motor wirings are correct).
• All screws and nuts have been tightened and secured.
• All contact washers are correctly placed.
• No foreign objects have been left in the fan or in the ducting.
• Serial number of the replacement motor is supplied to the
service department of FläktGroup Finland Oy.
GMEB-8 Installation and Maintenance
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8. FAULTS
If any faults occur during operation that cannot be repaired by
maintenance personnel please contact the service department at
FläktGroup Finland Oy.
Examples of incorrect use can include the following issues:
- foreign particles inside fan (AHU)
- corrosive media inside AHU
- too low or high temperatures
- too high vibrations
- incorrect maintenance
Possible problems generated:
- ignition hazard
- bearing damage
- corrosion damage
- vibration generated damage
9. SPARE PARTS
Use only genuine spare parts supplied or accepted by FläktGroup.
Available spare parts: For ordering codes for inlet cone (including
the front plate), impeller and motor please contact FläktGroup for
correct spare part list.
If other, non-genuine, spare parts are used neither warranty nor
ATEX classification are valid.
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:
Please note that the base frame length or motor length may ex-
ceed safety distance L. Please ensure min. 70 mm free space
behind the motor to secure motor cooling.
W
H
ØD
L
E
Fan size W H ØD 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
063 1110 1210 555 1080 300
071 1250 1350 625 1220 400
080 1410 1510 704 1370 400
090 1590 1690 793 1530 400
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 Δp
m
from the equation:
q
v
= air flow m
3
/s or m
3
/h
k = k-factor of each fan
Δp
m
= differential pressure reading (Pa)
Δp
m
Fan size k-factor
m3/s m3/h
025 61,4 58,6
028 53,4 67,4
031 41,8 86,1
035 34,8 103
040 27,0 133
045 21,7 166
050 15,9 226
056 12,7 283
063 11,6 310
071 9,07 397
080 7,35 490
090 5,77 624
qv = 1 • √Δpm
k ,m³/s qv = k • √Δpm,m³/h
GMEB-8 Installation and Maintenance
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12. PRODUCT CODE
PLUG FAN
GMEB-8 GMEB-8-0b-ccc-ddef
GMEB
Fan type (a)
8 = ATEX 2G
Version/Motor speed (bb)
bb = 0 = standard
bb = 2 = 2 pole
4 = 4 pole
6 = 6 pole
Fan size (ccc)
025, 028, 031, 035, 040, 045, 050, 056, 063, 071, 080, 090
Fan nominal power (dd)
07= 0,75 kW
11 = 1,1 kW
15 = 1,5 kW
22 = 2,2 kW
30 = 3,0 kW
40 = 4,0 kW
55 = 5,5 kW
75 = 7,5 kW
16 = 11,0 kW
17 = 15,0 kW
18 = 18,5 kW
19 = 22,0 kW
20 = 30,0 kW
Motor type (e)
7 = Ex de motor IE2
Motor-drive arrangement (f)
0 = without VSD
ACCESSORIES
Protective screen, inlet, ATEX GMEZ-14-00-ccc-1-0
Flexible connection, inlet, ATEX GMEZ-22-00-ccc-1-0
Anti vibration mountings, rubber, ATEX GMEZ-45-00-ccc-d-0
Anti vibration mountings, spring, ATEX GMEZ-46-00-ccc-d-0
Fan size (ccc)
025, 028, 031, 035, 040, 045, 050, 056, 063, 071, 080, 090
For d see table for each size
Painting GMEZ-65-00-ccc-d-0
Fan size (ccc)
025, 028, 031, 035, 040, 045, 050, 056, 063, 071, 080, 090
Type of painting (d)
d = 2 Powder painting 100 µm
d = 3 Wet painted 250 µm, three coats (not allowed for
IIB+H
2
option).
13. DISPOSAL OF THE PRODUCT
Used product shall be disposed or recycled according to the local
laws and regulations.
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14. DECLARATION OF CONFORMITY
EC Declaration of conformity for Partly Completed machinery
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-8 with accessories
Induction AC-motor to be used with VSD
to be used in Fan Group II, category 2G, zone 1 temperature class T4 device with Ex de IIB T4 motors
defined to EPL b
or optionally
The specific technical documentation has been written and is available. The specific documentation is filed
by NB 0537.
And that this partly completed machinery is in conformity with the provisions of the following other EC-
Directives:
2014/34/EU ATEX Directive
2006/42 EC Machinery Directive
2014/35/EU Low Voltage Directive
And furthermore, declares that
the following (parts/clauses of) European harmonised standards have been
applied: EN 14986:2017, EN 80079-36:2016 and EN ISO 12100:2010
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 ATEX Directive 2014/34/EU and
Machinery Directive 2006/42/EC, where appropriate.
Turku, 27.11.2019 Heikki Stenberg
R&D Manager
GMEB-8 Installation and Maintenance
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FläktGroup DC_10367GB_20191209_R0
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FG_DC-10367GB_GMEB-8_IN-MA_20191129_R0 © Copyright 2019 FläktGroup
WWW.FLAKTGROUP.FI GMEB/ATEX 10367
» Learn more on www.flaktgroup.com
or contact one of our offices
A HISTORY OF INNOVATION
AND RELIABILITY
With more than a century of accumulated industry experience, FläktGroup is
in a unique position to deliver energy efficient components and solutions for
integrated performance, reliability and quality. With modern manufacturing
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