FläktGroup Centriflow 3D GMEB-8 ATEX Installation and Maintenance Manual

Brand: FläktGroup

Model: Centriflow 3D GMEB-8 ATEX

Type: Installation and Maintenance Manual

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

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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

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

510

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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.

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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.

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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

demand

1Check impeller for damage and unbalancing,

vibration check

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

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

6Clean motor cooling bars x x

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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).

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.

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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.

ØD

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

from the equation:

= air ﬂow m

/s or m

k = k-factor of each fan

Δp

= differential pressure reading (Pa)

Δp

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

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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

option).

13. DISPOSAL OF THE PRODUCT

Used product shall be disposed or recycled according to the local

laws and regulations.

GMEB-8 Installation and Maintenance

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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

FläktGroup DC_10367GB_20191209_R0

Specifications are subject to alteration without notice

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

technologies, precise deliveries and technical support, FläktGroup is your

partner – fulﬁlling and surpassing industry standards and certiﬁcations.

FläktGroup Centriflow 3D GMEB-8 ATEX Installation and Maintenance Manual

FläktGroup Centriflow 3D GMEB-8 ATEX Installation and Maintenance Manual

FläktGroup Centriflow 3D GMEB-8 ATEX Installation and Maintenance Manual

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