Ex Fans — Fans for use in explosion-capable areas
Axial fans, Roof fans, Duct fans
Installation and Operating Instructions
Document in original language | · 002
GB
© Copyright Systemair AB
All rights reserved
E&OE
Systemair AB reserves the rights to alter their products without notice.
This also applies to products already ordered, as long as it does not affect the previously agreed specifications.
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Contents
1 General information ......... .... ......... .... .... ......... ..1
1.1 Notice symbols . .... ............. .... ............. ...1
1.1.1 Instruction symbols...... .... ...........1
2 Information on the explosion-protection
devices . .... ......... .... .... .... ..... .... .... ............. .... .1
3 Important safety information ... ......... .... .... .........2
3.1 Personnel .... ............. .... .... ..... .... .... .......3
3.2 Personal protective equipment............. .... .3
3.3 5 rules of electrical safety .... ......... .... .... ...3
4 Warranty....... .... .... ............. .... .... ......... .... .... ..3
5 Delivery, transport, storage ..... .... ............. .... .... .4
6 Description .......... .... .... ......... .... .... ......... .... .... 5
6.1 Intended use .... .... .... ......... .... .... ............5
6.2 Description AXC-EX, AXCBF-EX ... .... ...........5
6.2.1 Accessories........ .... .... ......... .... ..6
6.2.2 Name plate and type key........ .... .7
6.3 Description AW-EX .... ............. .... .... ........8
6.3.1 Accessories........ .... .... ......... .... ..8
6.3.2 Name plate and type key........ .... .8
6.4 Description RVK-EX .... .... ............. .... ........9
6.4.1 Accessories........ .... .... ......... .... ..9
6.4.2 Name plate and type
key ..... .... ............. .... .... ......... 10
6.5 Description DV-EX ... ......... .... .... ......... ...11
6.5.1 Accessories........ .... .... ......... .... 11
6.5.2 Name plate and type
key ..... .... ............. .... .... ......... 12
6.6 Description MUB-EX.... .... .... ..... .... .... ..... 13
6.6.1 Accessories........ .... .... ......... .... 13
6.6.2 Name plate and type
key ..... .... ............. .... .... ......... 14
6.7 Technical data ........... .... .... ..... .... .... ..... 14
7 Marking .............. .... .... ..... .... .... ............. .... .. 15
8 Installation.. .... .... ......... .... .... ............. .... ....... 16
8.1 Installation AW-EX, AXC-EX, AXCBF-
EX...... .... .... ..... .... .... ......... .... .... ......... 17
8.2 Installation RVK-EX .. .... .... ............. .... ....18
8.3 Installation DV-EX.... .... .... ............. .... .... 19
8.4 Installation MUB-EX .. .... .... ......... .... .... ... 19
8.4.1 Lightning protection
device .. ............. .... .... ......... ...20
9 Electrical connection .. .... ......... .... .... ......... .... .. 20
9.1 Protecting the motor. ......... .... .... .... ..... .. 21
9.2 Variable-speed fans ............. .... ............. 21
10 Commissioning .... .... ............. .... .... ......... .... ... 22
10.1 Safety information...... .... .... ......... .... .... . 22
10.2 Preconditions ............. .... ......... .... .... ....22
10.3 Tests ... ..... .... .... ............. .... ............. ...22
11 Operation . ............. .... .... ......... .... .... ......... .... 23
11.1 Safety information...... .... .... ......... .... .... . 23
12 Troubleshooting/maintenance/repair .. .... ......... . 23
12.1 Troubleshooting.. .... ......... .... .... ......... ...24
12.2 Maintenance........ .... .... ............. .... ...... 25
13 Cleaning....... .... .... ......... .... .... ......... .... .... ..... 25
13.1 Safety information...... .... .... ......... .... .... . 25
13.2 Procedure.... ......... .... .... ......... .... .... ..... 26
14 Deinstallation/dismantling. .... ......... .... .... ......... 26
15 Disposal .... .... .... ..... .... .... ............. .... ............26
16 Commissioning Report.. .... ............. .... .... ......... 27
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1 General information
1.1 Notice symbols
General information |
1
Danger
Direct hazard
Failure to comply with this warning will lead
directly to death or to serious injury.
Warning
Potential hazard
Failure to comply with this warning may lead to
death or serious injury.
Note:
Useful information and instructions
1.1.1 Instruction symbols
Instruction
♦ Carry out this action
♦ (if applicable, further actions)
Caution
Hazard with a low risk
Failure to comply with this warning may lead to
moderate injuries.
Important
Hazard with risk of damage to objects
Failure to comply with this warning will lead to
damage to objects.
Instruction with xed sequence
1. Carry out this action
2. Carry out this action
3. (if applicable, further actions)
2 Information on the explosion-protection devices
Danger
Explosion protection!
This warning marks information which applies if the device is used in a potentially explosive atmosphere.
Failure to comply with this information will result in loss of explosion protection and may lead to serious
injury or death.
Warning
Hazard resulting from improper use of the fans.
These operating instructions and the fan name plate describe how to use the EX fans safely.
♦ Read the operating instructions completely and carefully.
♦ If used in potentially explosive atmospheres, examine the name plate. Only use type PRF-EX fans.
Warning
Protective clothing must be worn in potentially explosive atmospheres to reduce the risks to employee
health.
♦ Wear protective equipment during all work in the vicinity of the fan, details see 3.2 Personal protective
equipment, page 3.
♦ Comply with the information on personal protective equipment displayed in the work area.
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| Important safety information
2
Warning
Regarding the choice of material, the EX fans fulfil the requirements of Standard DIN 14986 (Construction of
fans for use in potentially explosive atmospheres) as a result of specific protection measures in areas of
potential contact between rotating and stationary components (rotor/intake nozzle).
A safety clearance to the intake nozzle is guaranteed for the rotating part. The plant builder is responsible
for selecting the materials for the fixed peripheral parts for fan designs without protective grids. Only pairs
of materials according to Standard DIN EN 14986 are to be used.
Warning
The temperature class stated on the EX name plate (motor) must match the temperature class of the
combustible gas which may occur, or the motor must have a higher temperature class.
Danger
Explosion protection
Transport damage or failure to comply with this information can lead to loss of explosion protection.
♦ In the event of recognisable transport damage, contact the manufacturer and do not put the device into
operation.
Warning
The effects of lightning strikes must be limited so that hazards are prevented. In addition to protection
against the effects of "direct" lightning strikes, this also includes protection against lightning strikes at a
distance from the building. The latter can lead to hazards resulting from excess voltage.
♦ Carry out a risk analysis according to DIN VDE 0100, part 443, with a balance between protection and
consequences, taking the probability of the occurrence of excess voltage into account.
♦ Protect all devices, protective systems and components by using suitable lightning and excess voltage
protection measures.
Warning
Ignition protection class „d“
If fans are controlled using motors with a "d" ignition protection class with a frequency converter, then
thermal protection via a PTC resistor in the motor is required.
3 Important safety information
Planners, plant builders and operators are responsible for the proper assembly and intended use.
♦ Read the operating instructions completely and carefully.
♦ Keep the operating instructions and other valid documents, such as the circuit diagram or motor instructions, with
the fan. They must always be available at the place of use.
♦ Observe and respect local conditions, regulations and laws.
♦ Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦ Safety elements may not be dismantled, circumvented or deactivated.
♦ Only use the fan in a awless condition.
♦ Provide generally prescribed electrical and mechanical protective devices.
♦ During installation, electrical connection, commissioning, troubleshooting, and maintenance, secure the location and
premises against unauthorised access.
♦ Do not circumvent any safety components or put them out of action.
♦ Before any work on the fan, test absence of voltage.
Even when the motor is stopped, dangerous voltages may be present on terminals.
♦ Keep all the warning signs on the fan complete and in a legible condition.
♦ The device is not to be used by persons (including children) with reduced physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they have been given supervision or instruction.
♦ Do not allow children to play with the device.
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Warranty
|
3.1 Personnel
The fan may only be used by qualified, instructed and trained personnel. The persons must know the relevant safety directives in order to recognise and to avoid risks. The individual activities and qualifications can be found in Table 1 Qual-
ifications, page 3.
Table 1 Qualifications
3
Activities
Storage, operation, transport, cleaning, disposal Trained personnel (see following note)
Electrical connection, commissioning, electrical
disconnection
Installation, disassembly Fitter or matching qualification
Maintenance
Repair
Qualifications
Electrical expert or matching qualification
Electrical expert or matching
qualification
Electrical expert or matching
qualification
Smoke extraction fans and EX fans only by agreement with
Systemair.
Fitter or matching
qualification
Fitter or matching
qualification
Note:
The operator is responsible for ensuring that personnel are instructed and have understood the contents of
the operating instructions. If something is unclear, please contact Systemair or its representative.
3.2 Personal protective equipment
♦ Wear protective equipment during all work in the vicinity of the fan.
• protective working clothes
• protective working shoes
• protective working gloves
• helmet
• goggles
• hearing protection
3.3 5 rules of electrical safety
1. Disconnect (disconnection of
the electrical system from
live components at all
terminals)
2. Prevent reactivation
3. Test absence of voltage
4. Ground and short-circuit
5. Cover or restrict adjacent live parts
4 Warranty
For the assertion of warranty claims, the products must be correctly connected and operated, and used in accordance
with the data sheets. Further prerequisites are a completed maintenance plan with no gaps and a commissioning report. Systemair will require these in the case of a warranty claim. The commissioning report is a component of this
document. The maintenance plan must be created by the operator, see section 12.2 Maintenance, page 25.
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| Delivery, transport, storage
4
5 Delivery, transport, storage
Safety information
Warning: Risk from rotating fan blades
♦ Prevent access by unauthorised persons by safety personnel or access protection.
Warning: Suspended loads
♦ Do not walk under suspended loads.
♦ Make sure that there is nobody under a suspended load.
Delivery
Each fan leaves our plant in an electrically and mechanically proper condition. We recommend transporting the fan to
the installation site in the original packaging.
Checking delivery
♦ Check the packaging and the fan for transport damage. Any findings should be noted on the cargo manifest.
♦ Check completeness of the delivery.
Unpacking
When opening the transport packaging, there is a risk of damage from sharp edges, nails, staples, splinters etc.
♦ Unpack the fan carefully.
♦ Check the fan for obvious transport damage.
♦ Only remove the packaging shortly before assembly.
Transport
Safety information
Warning: Electrical or mechanical hazards due to fire, moisture, short circuit or malfunction.
♦ Never transport the fan by the connecting wire, terminal box, impeller, protection grille, inlet cone or silencer.
♦ In open transport, please make sure that no water can penetrate into the motor or other sensitive parts.
♦ We recommend transporting the fan to the installation site in the original packaging.
Caution: If transported without care during loading and unloading, the fan may be damaged.
♦ Load and unload the fan carefully.
♦ Use hoisting equipment that is suitable for the weight to be hoisted.
♦ Observe the transportation arrows on the packaging.
♦ Use the fan packaging exclusively as transport protection and not as a lifting aid.
Storage
♦ Store the fan in the original packaging in a dry, dust-free location protected against weather.
♦ Avoid the effects of extreme heat or cold.
Hazard due to loss of function of the motor bearing
♦ Avoid storing for too long (recommendation: max. 1 year).
♦ Check that the motor bearing functions properly before installation.
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Description
|
6 Description
6.1 Intended use
Indended use AW-EX, AXC-EX, AXCBF-EX, DV-EX, RVK-EX, MUB-EX
• The fans are intended for installation in ventilation systems.
• The fans are exclusively intended for conveying air in explosion-capable atmospheres according to the data on the
name plate and this manual.
• The temperature of the air transported through the fan must not exceed the temperature range stated on the name
plate.
• The temperature on the name plate (motor) must match the temperature class of the combustible gas which will
possibly occur.
Incorrect use
Incorrect use refers mainly to using the fan in another way to that described. The following examples are incorrect
and hazardous:
5
• Conveying of aggressive media
• The fan is not suitable for intake air with a dust
content so high that dust deposits on the impeller or
the fan housing.
• Operation of the fans with motors of „e“ ignition
protection class with frequency converter.
• Conveying of abrasive, combustible air or air with
solid particles.
• Operation without duct system or protection grille
• Operation with the air connections closed
6.2 Description AXC-EX, AXCBF-EX
Material of the housing:
Material of the impeller:
Speed control: By frequency converter (See accessories in our online catalogue)
Motor protection:
Temperature classes: T1, T2, T3, T4
Classification:
Category:
Ignition protection class:
Group:
Others:
Galvanized steel
Aluminium die cast
By integrated PTC resistor (A motor protection device with EC test type certification has
to be used. See accessories in our online catalogue)
Zone 1, Zone 2
2G
Ex d, Ex e, Ex h
IIA, IIB, IIC
• AXCBF-EX: Motor outside the air flow.
• AXC-EX: Supplied with Ex e connection box on the outside of the housing.
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Temperature [°C] Max. input power in proportion to nominal power in [%]
40 100
45 95
50 90
55 85
60 80
Description
1
2
3
4
5
6 7
8
9
10
11
12
13
8
14
15
1
2
3
4
5
11
6
13
14
|
6
6.2.1 Accessories
Horizontal installation
Vertical Installation
1 SG
2 ESD-F
3 RSA
4 EV-EX
5 MPR
6 REV-ATEX
7 REV-ATEX
8 MP
9 MFA
10 SD
11 FSD
12 ZSD
13 LRK-EX
14 GFL
15 ABS
Protection guard
Inlet cone
Silencer
Flexible connection
Mounting ring from size 315 to 1000
Isolator switch
Isolator switch
Mounting bracket from size 1120
Mounting foot
Rubber anti-vibration mounts
Spring anti-vibration mounts
Suspension spring anti-vibration mounts
Air operated damper
Counter flange
Outlet cowl
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6.2.2 Name plate and type key
3
1
2
4
5
6
2
Angle
Date
Hz
Volts
Phases
RPM
MADE IN GERMANY
Ex de IIC T4 Gb
2,2
4,3
24°
380 - 415 Y
0123
Ta = -20°C up to +60°C
Sira 07ATEX6341X
AXC-EX 450-7/24°-2 (D)
PA-No.
II 2G c
Ampere
2019
50 / 60
P2 kW
Fan Type
Systemair GmbH, Seehöfer Str. 45, 97944 Boxberg
Tel. +49 (0) 79 30 / 92 72-0, Fax. +49 (0) 79 30 / 92 72-93
www.systemair.de
2870 / 3410
3
Description
1
General data
2
Technical data
3
Manufacturer Address
4
Identification
Certification office/ATEX
5
registration number
Ambient temperature
6
|
7
Table 2 Type key
AXC-EX
560 -9
/24°
-2
(D)
AXCBF-EX
Motor type
(D): Pressure proof encapsulation
(E): Increased safety
Number of poles
Blade angle
Number of blades
Nominal diameter of the fan
AXC-EX
AXCBF-EX
Axial fan — explosion-proof
Axial fan bifurcated — explosion-proof
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Description
1
2
3
3
2
1
4
1
5
|
8
6.3 Description AW-EX
Material of the housing: Galvanized, powder coated steel
Material of the impeller: Galvanized, powder coated steel
Speed control: Voltage controllable (See accessories in our online catalogue)
Motor protection: By integrated thermal contacts
Temperature classes: T1, T2, T3 (AW-EX355, AW-EX420 –> T4)
Classification:
Category:
Ignition protection class:
Group:
Zone 1, Zone 2
2G
Ex e
IIA, IIB
6.3.1 Accessories
Note:
For details of the accessories, please check our online catalog or contact Systemair.
Table 3 Accessories
1 AW-EX
2 SG-AW
3 VK
Axial fan with a wall plate — explosion-proof
Protection grille
Louvre shutter
6.3.2 Name plate and type key
1
General data
2
Technical data
3
Manufacturer Address
4
Identification
5
Certification office/ATEX
registration number
Table 4 Type key
AW-EX 355 D4 —2
Option of 2-step operation by D/Y switching for 400V versions.
D4
D6
Size
AW-EX
Motor type
4 poled voltage controllable/3 phased
6 poled voltage controllable/3 phased
Fan type
Axial fan — explosion-proof
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6.4 Description RVK-EX
IGK
IGC
FGR
FK
RVK-EX
SG
LDC
RSK
VKK
VK
IGC
IGK
FK
Material of the housing: Conductive plastic
Material of the impeller: Conductive plastic
Speed control: Voltage controllable (See accessories in our online catalogue)
Description
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9
Motor protection:
Temperature classes: T1, T2, T3
Classification:
Category:
Ignition protection class:
Group:
By integrated PTC resistor (A motor protection device with EC test type certification has
to be used. See accessories in our online catalogue)
Zone 1, Zone 2
2G
Ex e, Ex h
IIA, IIB, Hydrogen
6.4.1 Accessories
Note:
For details of the accessories, please check our online catalog or contact Systemair.
RVK-EX
IGC
IGK
FGR
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fan
Round protection grille
Wall grid
Filter cassette
LDC
VKK
VK
Silencer
Back draft damper
Louvre Shutter
RSK
Back draft damper
SG
Protection guard
FK
Fast clamp
Description
U (V) / F (Hz)
:
400Y / 50 Hz Date
:
:
isol. class:B
P1 (kW)
:
portec. class:IP 44
n (1/min)
:
m (kg)
:
7
Temp.
:
serial no :
TPS 20 ATEX 085751 0009 X
Systemair GmbH
Seehöfer Strasse 45
97944 Boxberg
Fan type: RVK-EX 315D4
GERMANY
01.01.2020
I (A)
0,25
0,09
1385
-20°C bis +40°C
II 2G Ex h IIB+H² T3 Gb
1
2
4
5
3
2
1
|
10
6.4.2 Name plate and type key
1
General data
2
Technical data
3
Manufacturer Address
Table 5 Type key
RVK-EX 315 D4
D4
Size
RVK-EX
4
Certification office/ATEX registration number
5
Identification
Motor type
4 poled voltage controllable/3 phased
Fan type
Circular duct fan — explosion-proof
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6.5 Description DV-EX
2
3
4
5
2
6
7
9
8
1
Description
|
11
Material of the housing:
Speed control: Voltage controllable (See accessories in our online catalogue)
Motor protection:
Temperature classes: T1, T2, T3
Classification:
Category
Ignition protection class:
Group:
Aluminium
and
Galvanized steel
By integrated PTC resistor (A motor protection device with EC test type certification has
to be used. See accessories in our online catalogue)
Zone 1, Zone 2
2G
Ex e, Ex h
IIA, IIB, Hydrogen
6.5.1 Accessories
Note:
For details of the accessories, please check our online catalog or contact Systemair.
Table 6 Accessories
1 DV-EX
2 VKS—EX
SSD (i)
3
4 ASK
5 ASS-EX
6 ASF
7 TDA
8 VKS—EX
9
FDS (i)
Roof fan - explosionproof
Back draft damper
Socket silencer
Inflow box SSD
Flexible connection
Inlet flange
Adapter framework
Back draft damper
Flat roof socket
Note:
i. If the degree of inclination is higher than 5°, a SSS (Slanting socket silencer) or a SDS (Slanting roof
socket) has to be used.
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Description
0,39kW 230 / 400V D/Y 1350 r/m
t
A=81s
'A/ 'N = 3,4 Insulationclass F Temp. -20°C - +40°C
II 2G Ex h IIB+H² T3 Gb
TPS 20 ATEX 085751 0007 X
Fan type: DV-EX 400D4
For thermal overload protection use type
U-EK230E (PTB03ATEX3045)
Systemair GmbH
3 ~ 50Hz
Speedcontrollable 15 to 100% by reducing the voltage
1,31 / 0,76A
PA-Nr:
Seehöfer Strasse 45
97944 Boxberg
GERMANY
4
1
2
3
5
3
|
12
6.5.2 Name plate and type key
1
General data
2
Technical data
3
Manufacturer Address
Table 7 Type key
DV-EX 315 D4
D4
D6
Size
DV-EX
4
Certification office/ATEX registration number
5
Identification
Motor type
4 poled voltage controllable/3 phased
6 poled voltage controllable/3 phased
Fan type
Roof fan - explosion-proof
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6.6 Description MUB-EX
1
2
1
3
3
4
5
Material of the housing: Aluminium
Material of the impeller:
Speed control: Voltage controllable (See accessories in our online catalogue)
and
Galvanized steel
Description
|
13
Motor protection:
Temperature classes: T1, T2, T3
Classification:
Category
Ignition protection class:
Group:
By integrated PTC resistor (A motor protection device with EC test type certification has
to be used. See accessories in our online catalogue)
Zone 1, Zone 2
2G
Ex e, Ex h
IIA, IIB, Hydrogen
6.6.1 Accessories
Note:
For details of the accessories, please check our online catalog or contact Systemair.
Table 8 Accessories
1 FGV
2 WSG
3 WSG
Flexible
connection
Weather
protection
grille
Weather
protection
guard
Weather
4 WSD
5 MUB MUB-EX
protection
roof
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Description
4
3
0,39kW 230 / 400V D/Y 1350 r/m
t
A=81s
'A/ 'N = 3,4 Insulationclass F Temp. -20°C - +40°C
Systemair GmbH
Seehöfer Strasse 45
97944 Boxberg
GERMANY
Fan type: MUB-EX 400D4
PA-Nr:
II 2G Ex h IIB+H² T3 Gb
3 ~ 50Hz
1,31 / 0,76A
Speedcontrollable 15 to 100% by reducing the voltage
For thermal overload protection use type
U-EK230E (PTB03ATEX3045)
TPS 20 ATEX 085751 0008 X
1
2
5
|
14
6.6.2 Name plate and type key
1
General data
2
Technical data
3
Manufacturer Address
Table 9 Type key
MUB-EX 630 D6
D4
D6
Size
MUB-EX
4
Identification
5
Certification office/ATEX registration number
Motor type
4 poled voltage controllable/3 phased
6 poled voltage controllable/3 phased
Fan type
Multibox - explosion-proof
6.7 Technical data
Max. ambient temperature [°C] see data sheet, available in our online catalogue.
Max. temperature of transported air [°C] see data sheet, available in our online catalogue.
Sound pressure [dB] see data sheet, available in our online catalogue.
Voltage, current, frequency, enclosure class, weight see name plate of the fan
The motor data can be found on the name plate of the motor, or in the technical documents of the motor
manufacturer.
The data on the name plate of the fan apply to "standard air" according to ISO 5801.
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7 Marking
Table 10 Marking
Marking |
15
Designation
Device group II
Device
category/
classification
Ignition
protection class
mechanical
Ignition
protection class
electrical
Group
Classification
„2G“
„3G“
“h”
„d“
„e“ Increased
II
2
3
G
Constructive
safety
Pressureproof
encapsulation d
safety, Ex e
IIA Propane
IIB
IIC
Marking
All areas with explosion-capable atmosphere
apart from mining, underground and above
ground in cases of mien damp.
Category 2 / Zone 1 / high safety / Devices of
this category are intended for use in areas in
which occasional occurrence of an explosioncapable atmosphere of gases, vapours, mists is
to be expected. Increased safety, Ex e.
Category 3 / Zone 2 / normal safety / Devices of
this category are intended for use in areas in
which occurrence of an explosion-capable
atmosphere of gases, vapours, mists is not to be
expected, but if it does occur then in all
probability only rarely and for a short period of
time.
Gases / Vapours / Mists
DIN EN ISO 80079-37:2016
Motor: Pressure-proof encapsulation
Terminal box: Occurrence of sparks, light arc or
inadmissible temperatures which could act as
sources of ignition is prevented by additional
measures and an increased degree of safety.
Ethylene
Hydrogen
Temperature
class
EPL Equipment
Protection
Level
T1 450 °C
T2 300 °C
T3 200 °C
T4 135 °C
T5 100 °C
T6 85 °C
Gb
I: Methane
IIA: Acetone, ammoniac, methane, methanol,
propane, toluene
IIB: Town gas
IIC: Hydrogen
IIA: Ethyl alcohol, n-butane
IIB: Ethylene
IIC: Acetylene
IIA: Otto fuels, diesel fuels, heating oils
IIB: Hydrogen sulphide
IIA: Acetaldehyde, ethyl ether
There is no gas in this class
Carbon disulphide
Devices of this category are intended for use in
areas in which occasional occurrence of an
explosion-capable atmosphere of gases, vapours,
mists is to be expected.
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| Installation
16
8 Installation
Safety information
Warning: Danger from falling fan or fan parts.
♦ Check the surface before installation for load bearing capacity.
♦ Consider all static and dynamic loads when selecting hoisting equipment and fastening components.
General safety information
♦ Installation may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 3.
♦ Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦ Do not dismantle or circumvent safety elements, or put them out of function.
♦ Move the rotor of the fan by hand before you install it in order to check that it moves freely.
♦ Provide contact and intake protection and ensure safety distances according to DIN EN ISO13857 and DIN 24167-1.
♦ Prevent the possibility of foreign bodies being drawn in.
♦ To reduce transmission of vibration to the duct system, we recommend flexible connections from our accessory
range, see chapter Accessories.
♦ The safety of the fans has to be ensured by protective devices according to DIN EN 294 (DIN EN ISO 12100-1) and
DIN 24167–1, the explosion protection measures necessary according to standard DIN EN 13980.
Preconditions
♦ Ensure that the fan and all its components are
undamaged.
♦ Ensure that there is enough space to install the fan.
♦ Protect against dust and moisture when installing.
Danger
Risk of ignition of a potentially explosive atmosphere!
♦ Seal the system carefully.
♦ Install accessory parts correctly.
Aluminothermic Reaction
At high air speeds, in combination with aluminium, rust particles may lead to an aluminothermic reaction
which, in the worst case, can trigger the ignition of an explosive atmosphere. Upstream or downstream
components, or those which lie directly in the air flow, must not have any unprotected aluminium or steel
surfaces. To prevent an aluminothermic reaction, surface protection is required which at least fulfils the
cross-cut test classification 2 / DIN EN ISO 2409. Steel with an electro-galvanised or hot-dip galvanised
surface is not critical. However, care must be taken that appropriate protection is also applied to the cut
edges.
♦ Ensure that the information on the name plates (fan
and motor) matches up with the operating conditions.
♦ Fit the fans in such a way that there is sufficient
access for troubleshooting, maintenance and repair.
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Installation |
Ø D
min.
2,5x Ø D
min.
2,5x Ø D
X
X
X
Important
Damage to the bearings or other parts of the fan
can occur.
♦ Do not place a duct bend directly before or
after the fan!
♦ Ensure a smooth and constant air flow to the
device.
Air gap
For all work on the fan care should be taken that the gap between the fan impeller and the fixed housing components
is regular. The minimum distances must be at least 1 % of the greatest contact diameter, but no less than 2 mm. For
double inlet fans the gap must be checked on both inlet sides.
Ensure that the air gap between the housing and the impeller is complied with.
You can find precise information on the minimum air gap of the fans in this chapter.
♦ Check if the air gap complies with these data. ♦ Do not install the fan if the gap is not complied with
Below sketch illustrates the different kinds of air gaps.
• Round duct system: D = Nominal diameter
• Rectangular duct system: D = Hydraulic diameter
the mentioned data.
17
Radial fan Axial fan
8.1 Installation AW-EX, AXC-EX, AXCBF-EX
Air gap
Table 11 Air gap AW-EX
Nominal diameter Min. air gap [mm] Nominal diameter Min. air gap [mm]
355 3.5 550 5.5
420 4.2 650 6.45
Table 12 Air gap AXC-EX, AXCBF-EX
Nominal diameter Min. air gap [mm] Nominal diameter Min. air gap [mm]
250 2.5 800 5.0
315 2.5 900 7.0
355, 400 3.0 1000 7.0
450, 500 3.5 1120 8.0
560 3.5 1250 8.0
630 4.5 1400 10.0
710 5.0 1600 10.0
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| Installation
18
Installation positions
AXC-EX, AXCBF-EX
The installation is possible in the mounting positions, see
adjacent picture.
AW-EX
Important
Damage to the fan if condensation water can not drain.
If installed in a vertical motor shaft position, condensation cannot escape.
♦ Install the fan in a horizontal shaft position.
8.2 Installation RVK-EX
Air gap
Table 13 Air gap RVK-EX
Nominal diameter Min. air gap [mm]
315 2
Installation positions
The installation is possible in any mounting position.
Installation with mounting bracket
Note:
The mounting
bracket is
included with the
delivery.
♦ Mount the mounting
bracket on the fan,
see adjacent image.
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8.3 Installation DV-EX
A
1 x A
A
1 x A
Air gap
Table 14 Air gap DV-EX
Nominal diameter Min. air gap [mm] Max. air gap [mm]
all sizes
Warning
Danger of injury by tilting the fan during installation.
♦ The tilting device must be secured in the opened state by screws in the designated hole against
unintentional folding.
8.4 Installation MUB-EX
Air gap
Table 15 Air gap MUB-EX
Nominal diameter Min. air gap [mm]
025 315 2.5
042 355 5
042 400 4
042 450 4
062 560 3.5
062 630 2.5
4 8
Installation |
19
Important
Overheating motor
♦ The installation distance must correspond to the adjacent image. If the motor protrudes out of the
housing, the distance between other motors/multiboxes or a wall has to be 1 X A.
♦ As well as adhering to the maximum ambient temperature (see fan data sheet), care must be taken that
the ventilation for the motors is sufficient. Trapped heat must be avoided at all costs.
Distance to a wall
Installation positions
The installation is possible in any mounting position.
Distance to a MUB
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| Electrical connection
1.
2.
3.
20
Changing the discharge direction
As a default, the Multiboxes have been designed
for an inline airflow direction. The airflow can be
changed from inline to 90° by replacing the side
panels.
Legend
1. MUB-EX with inline airflow direction (factory
assembly)
2. MUB-EX with 90° airflow direction
3. Change of airflow direction
MUB-EX
8.4.1 Lightning protection device
♦ If the risk assessment shows that there is the risk of an atmospheric discharge, lightning protection measures must
be taken. For reasons of operational safety, provide for a suitable lightning protection system according to country
specific directives (e.g. DIN VDE 0185).
9 Electrical connection
Safety information
Danger
Risk of ignition of a potentially explosive gas/air atmosphere!
If the fan is connected to electricity via an additional connection box (not included in the scope of
delivery) in explosion capable area, the following points must be observed:
♦ A connection box (with its own certification and explosion-protection identification) which has been
selected as suitable for this area must be used.
♦ Wether the technical characteristics of components match the requirements of the explosion capable
area must be checked by the customer.
Protection against explosions regarding use of accessories:
♦ Electronic accessories without explosion-protection (e.g. RTRD control device and UEK motor protection)
must be installed outside the explosion capable area.
♦ Speed control by frequency converter is only admissible for devices with the „Pressure-proof
encapsulation Ex d“ ignition protection class.
Protection against explosions in general:
♦ Earth at the planned earthing point.
♦ In hazardous areas connect conductive components to a potential equalisation system.
Warning: Danger from electrical voltage!
♦ Observe the 5 rules of electrical safety, see 3.3 5 rules of electrical safety, page 3.
♦ Prevent the ingress of water into the connection box.
♦ Electrical connection may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page
3.
Preconditions
♦ Potentially, the fans may become charged with static electricity. If this represents a risk, please contact Systemair.
♦ If fans with motors of ignition protection class „d“ are controlled by frequency converter, a thermal protection (PTC)
in the motor is necessary.
Connection
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Electrical connection |
21
♦ Check if the data on the nameplate matches the
connection data.
♦ Complete the electrical connection according to the
circuit diagram.
♦ Use all of the locking screws.
♦ Insert the screws by hand to avoid damaging the
thread.
Protective grounding wire
The protective grounding must have a cross-section equal to or greater than that of the phase conductor.
Residual current circuit breaker
All-current-sensitive residual current circuit breakers are required for use in alternating-current systems with 50/60
Hz, in combination with electronic devices such as EC motors, frequency converters or uninterruptible power supplies
(UPS).
♦ Tighten all glands well in order to guarantee
protection class IP.
♦ Screw the lid of the terminal box/inspection switch
evenly tight.
♦ Connect the cable end in a dry environment.
♦ Install a circuit breaker in the permanent electrical
installation, with a contact opening of at least 3 mm
at each pole.
♦ Potentially, the fans may become charged with static
electricity. If this represents a risk, please contact
Systemair.
9.1 Protecting the motor
Important
Damage to motor due to overcurrent, overload or short circiut.
♦ Lead-out temperature monitors must be integrated in the control circuit in such a way that, if a fault
occurs, the motor cannot switch on again automatically after it has cooled down.
♦ Motor lines and temperature monitor lines should be laid separately on principle.
♦ Without thermal protection: Use a motor protection switch!
9.2 Variable-speed fans
Warning
Resonant frequencies may result increased vibration in certain speed ranges. These vibrations may destroy
components.
♦ Only operate the fan outside these speed ranges.
♦ Pass through these speed ranges so quickly that any vibration cannot exceed the admissible resonant
frequency values.
♦ Observe the operating instructions of the frequency converter.
Caution
Damage as a result of incorrect commissioning of the frequency converter.
♦ Install the fan and frequency converter as near as possible to one another.
♦ Use shielded cables.
♦ All components (fan, frequency converter and motor) must be grounded.
♦ Avoid running the fan via the frequency converter below 10 Hz.
♦ Heating of the motor due to use of a variable frequency drive must be checked in the application by the
customer.
♦ Never exceed the maximum impeller rotation speed indicated on the name plate of the fan.
♦ An all-pole sine filter is mandatory if the fan is operated with a frequency converter.
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Commissioning
|
22
10 Commissioning
The system operator is responsible for the correct operation of the fan and/or the system!
Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is
provided.
It is recommended to fill out the commissioning report 16 Commissioning Report, page 27.
Danger
Risk of ignition of a potentially explosive gas/air atmosphere!
♦ When commissioning the EX fan, the fundamental information from DGUV 113-001 (explosion protection
rules (EX-RL)) and TRGS 727 (avoidance of risk of ignition as a result of electrostatic charges) must be
known.
♦ Observe and respect local conditions, regulations and laws.
10.1 Safety information
♦ Commissioning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 3.
♦ Pay attention to the safety data sheet of the chemical substances transported with the fan.
Warning
♦ Comply with fundamental information in the commissioning of the EX fan:
• DGUV 113-001 (explosion protection rules (EX-RL))
• TRGS 727 (avoidance of risk of ignition as a result of electrostatic charges).
• Observe and respect local conditions, regulations and laws.
10.2 Preconditions
♦ Installation and electrical connection have been
correctly performed.
♦ Residual material from installation and foreign objects
have been removed from the fan and ducts.
♦ Inlet and outlet are free.
♦ Safety devices have been fitted.
♦ Ground cable is connected.
♦ Cable glands are tight.
♦ Data on the name plate corresponds with the
connection data.
♦ For EX fans, check whether the minimum air gap
between the rotor and the housing matches the value
stated in 8 Installation, page 16
10.3 Tests
♦ Check if the air gap of the fans are according to the values in the chapter 6 Description, page 5.
♦ Before switching the fan on, check for externally visible damage and ensure that the protective equipment functions
properly.
1. Switch the fan on.
2. Do the tests requested in the commissioning report (16 Commissioning Report, page 27)
Speed controllable fans: “Measured data at commissioning” at maximum speed
3. Switch the fan off.
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Operation
11 Operation
11.1 Safety information
Danger
Risk of ignition of a potentially explosive gas/air atmosphere!
When commissioning the EX fan, the fundamental information from DGUV 113-001 (explosion protection
rules (EX-RL)) and TRGS 727 (avoidance of risk of ignition as a result of electrostatic charges) must be
known.
♦ Do not open or tip the fan if an explosive atmosphere exists.
Warning: Hazard from electrical voltage or moving components.
♦ The fan may only be operated by adequately qualified persons, details see Table 1 Qualifications, page 3.
Important
Damage to the fan because of condensation water.
Ensure regular switch-on time of 2 hours per week
|
23
♦ Only use the fan in accordance with the operating
instructions and the operating instructions for the
motor.
12 Troubleshooting/maintenance/repair
Safety information
♦ Observe 3 Important safety information, page 2
Danger
Loss of explosion protection
• The manufacturer must always be consulted before any maintenance or repair work is carried out!
Repairs should preferably always be carried out by the manufacturer! Exceptions can be made for nonrelevant components such as terminal boxes, screwed cable connections, etc. These can also be dealt
with on-site by the operator's qualified staff (authorised personnel). Non-compliance will result in the
ATEX certification being revoked!
• For ATEX-certified products, the repair or replacement of fan components is expressly only permitted
after consultation with the manufacturer and only if the manufacturer's original parts are used!
• After repair, the fan/system must be subjected to an inspection in accordance with local conditions,
regulations and laws (in Germany: §14 Abs 6 der BetrSichV Industrial Safety Regulation). This does not
apply to repairs carried out by the manufacturer.
♦ The EX fans have been admitted for S1 continuous
operation.
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| Troubleshooting/maintenance/repair
24
12.1 Troubleshooting
Problem Possible causes Remedy
Impeller imbalance
Soiling on the impeller Clean carefully, rebalance
Rebalancing by a specialist company if
possible, otherwise contact Systemair.
Fan does not
run smoothly
Air output of fan
too low
Thermal
contacts/
resistors have
triggered
Fan does not
reach nominal
speed
Material decomposition on the impeller due to
aggressive material conveyed.
Impeller rotates in wrong direction.
Deformation of impeller due to excessive
temperature.
Vibrations, oscillations
Fan operation in resonant frequency range
Impeller rotates in wrong direction.
Wrong wiring configuration (e.g. Y instead of
Delta).
Pressure losses too high. Optimize the line routing.
Flow regulators not or only partly open. Check opening position on site.
Intake or pressure ducts are blocked. Remove the blockage.
Impeller rotates in wrong direction.
Missing phase
Motor overheated
Motor blocked
Defective motor winding
Control units (if used) such as frequency
converter or transformer are set incorrectly.
Faulty supply voltage
Contact Systemair
Change direction of rotation (swap two phases
in case of a 3– phase motor).
Contact Systemair
Ensure that the temperature does not exceed
the certified value/Install new impeller.
Check the installation of the fan/check the duct
system, see 8 Installation, page 16.
Consider chapter 9.2 Variable-speed fans, page
21
Change direction of rotation (swap two phases
in case of a 3– phase motor).
Contact Systemair
Check and possibly correct the wiring
configuration.
Change direction of rotation (swap two phases
in case of a 3– phase motor).
In case of a 3 phase standard motor (not EC),
check if all 3 phase are present.
Check the cooling impeller (if used).
Contact Systemair
Contact Systemair
Check the winding by resistance measurement
(if possible).
Contact Systemair
Correct the settings of the control units.
Check the supply voltage, re-establish the
voltage supply.
Motor does not
rotate
Electronics/
motor
overheated
Mechanical blockage Remove the blockage.
Frozen condensate blocking the impeller
Faulty connection
Temperature monitor has responded.
Insufficient cooling Improve cooling.
Overloaded motor
Ambient temperature too high
Thaw and drain the condensate
Disconnect from the power supply, correct the
connection, see circuit diagram.
Allow the motor to cool down, find and resolve
the cause of the fault.
Check if the correct fan is used for your
application.
Check if the correct fan is used for your
application.
Improve cooling.
| 002
Cleaning |
Note:
For all other damage/defects, please contact Systemair. Defective safety-relevant fans (for Ex and smoke
extraction applications) must be replaced completely.
12.2 Maintenance
Warranty claims can only be made if maintenance work is carried out correctly and written evidence thereof is
provided.
We recommend regular maintenance intervals to ensure continuous fan operation. These maintenance intervals are
specified in the “Activities” table below. In addition, the operator must carry out follow-up activities such as cleaning,
replacing defective components or other corrective measures. For traceability reasons, a maintenance plan must be
created which documents the work carried out. This must be created by the operator. If the operating conditions are
"extreme", the maintenance intervals must be reduced so that maintenance is carried out more frequently. Examples
of extreme operating conditions:
• Durable ambient temperature > 35 ºC or < 5 ºC, or temperature fluctuations > 20 K
• Use in an explosion capable area
Table 16 Activities
Extreme operating
conditions
Every six
months
Activity
Check the fan and its components for visible damage,
corrosion and contamination.
Check the impeller for damage and imbalance.
Clean the fan/ventilation system (see 13 Cleaning, page
25).
Normal operating
conditions
Every six
months
X X
Annually Quarterly
X X
X X
25
Check the screwed connections for damages/defects and
check that they are firmly seated.
Check the fan intake is free from contamination.
Check that the fan and its components are being used
correctly.
Check the current consumption and compare this with the
rated data.
Check the vibration dampers (if used) are working
correctly and check for visible damage and corrosion.
Check the electrical and mechanical protective equipment
is working correctly.
Check the fan’s rating plate is legible.
Check the connection clamps and screwed cable
connections for damage/defects, and check that they are
firmly seated.
Check the flexible connectors for damage.
13 Cleaning
13.1 Safety information
X
X X
X
X X
X
X
X X
X
X
See normal operating
conditions
See normal operating
conditions
See normal operating
conditions
See normal operating
conditions
See normal operating
conditions
See normal operating
conditions
♦ Cleaning may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 3.
♦ Observe the 5 rules of electrical safety, see 3.3 5 rules of electrical safety, page 3.
♦ The impeller must be at a standstill.
♦ Pay attention to the safety data sheet of the chemical substances transported with the fan.
| 002
| Deinstallation/dismantling
26
Warning
Risk of ignition as a result of electrostatic charges.
Because of the MUB EX plastic parts in the housing, a damp cloth has to be used for cleaning to avoid the
risk of ignition as a result of electrostatic charges.
13.2 Procedure
Important
Keeping the fan clean extends its service life.
♦ Drain condensation off
♦ Only use compressed air if the fan is used for conveying air in the presence of gases/vapours without
hovering particles.
♦ If the fan is used in an environment with vapours of specific chemical substances, get information from
the chemical safety data sheet with a view to the recommended cleaning products.
♦ Install a filter monitor.
♦ Do not use steel brushes or sharp-edged objects.
♦ Do not use a high-pressure cleaner (steam jet cleaner) under any circumstances.
♦ Do not bend the fan blades when cleaning.
♦ When cleaning the impeller, pay attention to balance weights that have been positioned
♦ Keep the airways of the fan clear and clean them if necessary with a brush.
14 Deinstallation/dismantling
♦ Pay attention to the safety data sheet of the chemical substances transported with the fan.
Deinstall and dismantle the fan in reverse order of installation and electrical connection.
15 Disposal
♦ Ensure material is recycled. Observe national regulations.
♦ The device and the transport packaging are predominantly made from recyclable raw materials.
♦ Disassemble the fan into its components.
♦ Separate the parts according to:
• reusable material
• material groups to be disposed of (metal, plastics, electrical parts, etc.)
| 002
Commissioning Report
16 Commissioning Report
Warranty claims can only be made if commissioning work is carried out correctly and written evidence thereof is
provided.
Fan
Description:
Article no.: Manufacturing order no.:
Installer
Company: Contact person:
Company address:
Tel. no.: Email:
Operator (Place of installation)
Company: Contact person:
Company address:
Tel. no.: Email:
|
27
Type of connection
Directly to mains
0-10 V signal (EC motor)
via contactor control
Transformer
Frequency converter
Sinus filter
Shielded cables
Motor protection
Motor protection switch or motor protection relay
PTC resistor
Resistance value [Ω]:
Thermal contact
Electrical motor protection
Others:
Functional check
Impeller easily rotatable (by hand)
Rotation direction acc. to directional arrow
Smooth running without unusual noise/
vibrations
Yes No
□ □
□ □
□ □
□ □
□ □
□ □
□ □
Yes No
□ □
□ □
□ □
□ □
Yes No
□ □
□ □
□ □
Nominal data - Fan (name plate on fan housing)
Voltage [V]: Current [A]:
Frequency [Hz]: Power [kW]:
Fan impeller speed [rpm]:
Measured data at commissioning
Voltage [V]: Temp. of transported air [°C]:
| 002
28
Commissioning Report
|
Current L1 [A]*:
Fan impeller speed [rpm]:
Current L2 [A]: Air volume [m3/s]:
Current L3 [A]:
*For single-phase fans, fill in line “Current L1 [A]” *Δ- Pressure between suction-side and discharge of the fan
Differential pressure [Pa]*:
If an air flow measurement is not possible, this value can be calculated using the following formula:
=
Air volume [m³/s]:
Duct cross-section [m²]
X
Flow speed [m/s]
Grille measurement acc. to VDI 2044
Yes No
Commissioning of the fan successful?
□ □
Date, installer's signature
Date, operator's signature
| 002
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Systemair GmbH
Seehöfer Str. 45
97944 Boxberg
Germany
Tel.: +49 (0)7930/9272-0
Fax: +49 (0)7930/9273-92
info@systemair.de
www.systemair.de
Ex Fans — Fans for use in explosion-capable areas · Installation and Operating Instructions · · en_GB · 2020-05-20 · 002
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