REMBE Q-FlapCompact II User manual

page 1of 91 USB-QFLCII-14804/0
Translation of the original instruction
Operating and Maintenance Instruction Manual
Q-FlapCompact II/Q-Flap Compact II Plus
Inlet Isolation Device

page 2of 91 USB-QFLCII-14804/0
Operating and Maintenance Instruction Inlet Isolation Device Q-FlapCompact II-
US
© 2014 REMBE® Safety + Control
Copyright of this document:
Copyright of this document remains with REMBE® Safety + Control
This operating manual is designed for installation, operating, monitoring and servicing personnel. It
contains regulations and directives as well as drawings of a technical nature. All information
included in this manual should be treated as strictly confidential. It must not be used for
competitive purposes and may not be copied, in full or in part, or be made available to or passed
on to third parties.

page 3of 91 USB-QFLCII-14804/0
EC Declaration of Conformity
We hereby declare that
Q-FlapCompact II/Q-FlapCompact II Plus back pressure flap
corresponds explosive decoupling of the following EU directive, harmonized standards and
technical specification as far as services provided by the customer have been carried out
according to our reg- ulations, mentioned directives and standards and operation of the
back pressure flap in accordance with the intended use:
94/9/EC (ATEX 95) System and explosion protection systems for application in explosion endangered areas
Labelling protection system (DN 140 - DN 1000) 1026 D St1
Labelling protection system (DN 140 - DN 315) 1026 D St2
Labelling system (only for ProFlapII-St1) II 3D c T
60°C EC-type examination FTZU 07
ATEX 0008X Quality management production: FTZU 07
ATEX Q 003
Following harmonized standards and technical specifications have been applied:
prEN 16447 Back pressure flaps for explosive decoupling, last update: 09/2012
EN ISO 80079-34 Explosive areas - part 34: application of quality management
systems for the system fabrication
EN 61241-14 Electrical operating agent for application in areas with
combustible dust, part 14: selection and construction (VDE
0165-2)
prEN 13463-1 Non-electric systems for application in explosive areas - part 1:
Basis and requirements, last update: 05/2007
EN 13463-5 Non-electric systems for application in explosive areas - part 5:
Protection by constructive safety "c"; last update: 2005/03
TRBS 2153 Technical rule for operational safety "Avoidance of ignitions
because of electrostatic charge"
Kirchheim, 05.12.2012
i.V.
i. V. Dipl. Ing. (BA) J. Kuhn
Head of Quality Management
Keller Lufttechnik GmbH
+ Co. KG Neue
Weilheimer Straße 30
73230 Kirchheim unter Teck

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Contents
1 Technical data................................................................................................................................... 7
2 General information ........................................................................................................................ 11
2.1 Icons............................................................................................................................................... 11
2.2 Application of this Operating and Maintenance Instructions manual.............................................. 12
2.3 Intended use................................................................................................................................... 12
2.4 Personnel qualification.................................................................................................................... 14
2.5 Warranty ......................................................................................................................................... 15
3 Safety.............................................................................................................................................. 16
3.1 Safety warning................................................................................................................................ 16
3.2 Warning notices on the inlet isolation device.................................................................................. 17
3.3 Inspections...................................................................................................................................... 17
3.4 Health hazard due to exhausted substances.................................................................................. 18
3.5 Danger of crushing and overturning................................................................................................ 18
3.6 Crash hazard/danger of falling........................................................................................................ 19
3.7 Electrical hazards............................................................................................................................ 19
3.8 Fire and explosion hazard............................................................................................................... 20
3.8.1 Explosion protection document....................................................................................................... 20
3.8.2 Classifications of hazardous zones................................................................................................. 21
3.8.3 Avoiding sources of ignition............................................................................................................ 22
3.8.4 Additional explosion protection measures to reduce the effects of explosions .............................. 23
3.9 Safety instructions during assembly and operation........................................................................ 24
3.10 Safety during maintenance and inspection..................................................................................... 25
3.10.1 Measures to be taken prior to performing maintenance.................................................................. 25
3.10.2 Safe system shutdown.................................................................................................................... 25
3.10.3 Safety instructions during maintenance.......................................................................................... 25
3.11 Monitoring function.......................................................................................................................... 26
4 Functional description: introduction................................................................................................. 27
4.1 Functional description Q-FlapCompact II/Plus............................................................................... 27
4.1.1 Inspection lid................................................................................................................................... 29
4.1.2 Q-FlapCompact II/Plus locking mechanism................................................................................... 29

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4.1.3 Q-FlapCompact II/Plus closed-position sensor (Formerly known as deposit sensor).................... 32
4.2 Additional monitoring: Q-FlapCompact II Plus ................................................................................ 34
4.2.1 Wear and tear sensor (Q-FlapCoompact II Plus only) ................................................................... 34
4.3 Optional Level sensor (optional sensor for Q-FlapCompact II or Q-FlapCompact II Plus)............. 35
4.4Monitoring panel requirements........................................................................................................ 36
4.4.1 Locking mechanism requirements ................................................................................................. 37
4.4.2 Closed-position sensor (formerly deposit sensor) requirements.................................................... 38
4.4.3 Wear and tear sensor requirements................................................................................................ 39
4.4.4 Optional level sensor requirements................................................................................................ 40
5 Transport and storage prior to commissioning................................................................................ 41
5.1 Transport......................................................................................................................................... 41
5.2 Storage prior to commissioning....................................................................................................... 41
6 Assembly and commissioning......................................................................................................... 42
6.1 Installation location requirements.................................................................................................... 42
6.2 Installation conditions...................................................................................................................... 43
6.3 Mounting distances and measures ................................................................................................. 46
6.4 Terminal box wiring diagram........................................................................................................... 48
6.5 Commissioning............................................................................................................................... 49
7 Operation........................................................................................................................................ 50
8. Inspection and maintenance plan ................................................................................................... 51
8.1 Safety during maintenance and inspection..................................................................................... 51
9 Maintenance ................................................................................................................................... 52
9.1 Safety during maintenance and inspection..................................................................................... 52
9.2 Preparation for inspection/maintenance work................................................................................. 52
9.3 Safe system shutdown.................................................................................................................... 53
9.4 Inspection lid opening and closing.................................................................................................. 53
9.5 Inspection for wear and material deposits....................................................................................... 56
9.6 Check the bolted and screwed connections................................................................................... 59
9.7 Inspect the seals............................................................................................................................. 59
9.8 Check flap blade ease of movement............................................................................................... 59
9.9 Inspect the locking mechanism....................................................................................................... 61
9.10 Adjusting the locking mechanism.................................................................................................... 63
9.11 Inspecting the closed-position sensor............................................................................................. 65

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9.12 Adjusting the closed-position sensor............................................................................................... 66
9.13 Optional feature: Level sensor inspection (if installed)............................................. 67
9.14 Optional feature: Adjusting the level sensor (if installed) ............................................................... 68
10 Spare parts ..................................................................................................................................... 72
11 External documents........................................................................................................................ 73
11.1 Technical Data Switch Amplifier (not supplied by manufacturer)................................................... 74
11.2 Technical Data Shotbolt Lock Unit.................................................................................................. 79
11.3 Technical Data: Closed-Position Sensor......................................................................................... 83
11.4 Technical Data KI505A (optional) ................................................................................................... 86
11.5 Operating Instructions KI505A........................................................................................................ 88
12. Annex.............................................................................................................................................. 91
12.1 Q-FlapCompact II/Plus Inlet isolation device sequence of operation with
REMBE®, INC. Monitoring Panel .................................................................................................... 91

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1 Technical data
Bolt
Hole pattern (row 2) on center
Width
Inspection lid range
Nominal
Total length
Bolt size, bolt length (number per flange)

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Unit
Q-FlapCompact II / Q-FlapCompact II plus series /
DN
DN
140
160
200
250
280
315
355
400
Installed length
mm
420
470
530
590
630
660
730
750
inch
16.54
18.50
20.87
23.23
24.80
25.98
28.74
29.53
Width
mm
380
400
440
490
520
570
630
680
inch
14.96
15.75
17.32
19.29
20.47
22.44
24.80
26.77
Height
mm
560
580
610
660
690
740
790
830
inch
22.05
22.83
24.02
25.98
27.17
29.13
31.10
32.68
Inspection lid range
mm
390
420
460
480
520
540
590
645
inch
15.35
16.54
18.11
18.90
20.47
21.26
23.23
25.39
Bolt circle diameter
mm
182
200
241
292
332
366
405
448
inch
7.17
7.87
9.49
11.50
13.07
14.41
15.94
17.64
Bolt size
M10
M10
M10
M10
M10
M10
M10
M10
Bolt length
mm
30
30
30
30
35
35
35
35
inch
1.18
1.18
1.18
1.18
1.38
1.38
1.38
1.38
Number of bolts
8
8
8
8
8
8
8
12
Maximum opening
angle of the flap
blade
20° 20° 20° 20° 20° 20° 30° 30°
Weight
kg
36
41
46
55
60
69
89
99
lbs.
79.37
90.39
101.41
121.25
132.28
152.12
196.21
218.26
Pressure loss at
20 m/s
Pa 400 ~400 ~400 320 ~330 340 ~370 ~400
Maximum reduced
excess pressure in
the enclosure (filter)
Bar 0.7 0.7 0.7 0.7 0.7 0.7 0.5 0.5
Pressure shock
resistance of the
inlet isolation device
Bar 1.5 0.95 0.95 0.95 0.95 0.95 0.6 0.6
Design available for
dust explosion class
St1
X X X X X X X X
Design available for
dust explosion class
St1 aluminum dust
(no heating value
restriction)
X X X X X X - -
Design available for
dust explosion class
St2
X X X X X X - -
Technical data
for size
DN 140 (5.51’’) to
DN 400 (15.75’’)

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Unit
Q-FlapCompact II / Q-FlapCompact II plus series /
DN
DN
450
500
560
630
710
800
900
1000
Installed length
mm
810
870
930
1090
1190
1320
1470
1625
inch
31.89
34.25
36.61
42.91
46.85
51.97
57.87
63.98
Width
mm
730
790
850
1100
1180
1260
1360
1460
inch
28.74
31.10
33.46
43.31
46.46
49.61
53.54
57.48
Height
mm
880
930
990
1110
1200
1270
1380
1500
inch
34.65
36.61
38.98
43.70
47.24
50.00
54.33
59.06
Inspection lid range
mm
700
760
820
880
950
1060
1190
1310
inch
27.56
29.92
32.28
34.65
37.40
41.73
46.85
51.57
Bolt circle diameter
mm
497
551
629
698
775
861
958
1067
inch
19.57
21.69
24.76
27.48
30.51
33.90
37.72
42.01
Bolt size
M10
M10
M12
M12
M12
M12
M12
M12
Bolt length
mm
35
35
35
35
35
35
35
35
inch
1.38
1.38
1.38
1.38
1.38
1.38
1.38
1.38
Number of bolts
12
12
16
16
16
24
24
247
Maximum opening
angle of the flap
blade
30° 30° 30° 30° 30° 30° 30° 30°
Weight
kg
112
127
145
255
295
334
395
455
lbs.
246.92
279.99
319.67
562.18
650.36
736.34
870.83
1003.10
Pressure loss at 20
m/s
Pa ~430 450 ~450 ~500 ~500 ~500 ~500 ~500
Maximum reduced
excess pressure in
the enclosure (filter)
Bar 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Pressure shock
resistance of the
inlet isolation device
Bar 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
Design available for
dust explosion class
St1
X X X X X X X X
Design available for
dust explosion class
St1 aluminum dust
(no heating value
restriction)
- - - - - - - -
Design available for
dust explosion class
St2
- - - - - - - -
Technical data
for sizes
DN 450 (17.72)to
DN 1000 (39.37’’)

page 10 of 91 USB-QFLCII-14804/0
Unit
Q-FlapCompact II / Q-FlapCompact II plus series /
DN
DN
140
160
200
250
280
315
355
400
Maximum Kst value
bar x
m/s
200 200 200 200 200 200 200 200
Minimum mounting
distance dust
explosion class St 1
m
2.6
2
2
2
2
2
2.6
2.6
ft. 8.53 6.56 6.56 6.56 6.56 6.56 8.53 8.53
Maximum mounting
distance dust
explosion class St 1
m
6.6
7
7
7
7
7
6.6
6.6
ft. 21.65 22.97 22.97 22.97 22.97 22.97 21.65 21.65
Unit
Q-FlapCompact II / Q-FlapCompact II plus series /
DN
DN
450
500
560
630
710
800
900
1000
Maximum Kst value
bar x
m/s
200 200 200 200 200 200 200 200
Minimum mounting
distance dust
explosion class St 1
m
2.6
2.6
2.6
3
3
3
3
3
ft. 8.53 8.53 8.53 9.84 9.84 9.84 9.84 9.84
Maximum mounting
distance dust
explosion class St 1
m
6.6
6.6
6.6
7
7
7
7
7
ft. 21.65 21.65 21.65 22.97 22.97 22.97 22.97 22.97
Unit
Q-FlapCompact II / Q-FlapCompact II plus
series / DN
DN
140
160
200
250
280
315
Maximum Kst value
bar x
m/s
200 200 200 200 200 200
Minimum mounting
distance at St 1
aluminum dust (no
heating value
restriction)
m3.5 3.5 3.5 3.5 3.5 3.5
ft. 11.48 11.48 11.48 11.48 11.48 11.48
Maximum mounting
distance dust
explosion class St 1
aluminum dust (no
heating value
restriction)
m4.5 4.5 4.5 4.5 4.5 4.5
ft. 14.76 14.76 14.76 14.76 14.76 14.76
Unit
Q-FlapCompact II / Q-FlapCompact II plus
series / DN
DN
140
160
200
250
280
315
Maximum Kst value
bar x
m/s
300 300 300 300 300 300
Minimum mounting
distance at dust
explosion class St 2
m3.6 3.5 3.5 3.5 3.5 3.5
ft. 11.81 11.48 11.48 11.48 11.48 11.48
Maximum mounting
distance at dust
explosion class St 2
m77.5 7.5 7.5 7.5 7.5
ft.
22.97
24.61.
24.61
24.61
24.61
24.61
Mounting
distance for dust
explosion class1
sizes
DN 140 (5.51’’) to
DN 400 (15.75’’)
Mounting
distance for dust
explosion class1
sizes
DN 450 (17.72’’)
to DN1000
(39.37’’)
Mounting
distance for
aluminum dust
explosion class1
(no heating value
restriction))
Mounting
distance at dust
explosion class 2

page 11 of 91 USB-QFLCII-14804/0
2 General information
2.1 Icons
The following icons are used in this operating manual:
Draws attention to dangerous situations with possible personal injury and
used to alert to potential damage to machinery.
Danger due to electrical current. Work must only be carried out by trained
electricians.
Danger of hand injuries
Calls attention to overhead loads. Danger of injury due to falling load if
load is improperly secured or handled.
Explosion hazard
Avoid ignition sources
Danger due to hazardous substances. Use respiratory protection.
Grounding measures/positive conductor
Additional useful information, definitions and supplements for operating
the system.

page 12 of 91 USB-QFLCII-14804/0
2.2 Application of this Operating and Maintenance
Instructions manual
Prior to the commissioning, it is necessary to read this Operating and
Maintenance Instructions manual completely. Please operate and
maintain the system according to the information provided. The Operating
and Maintenance Instructions manual must be available in close proximity
to where the inlet isolation device is installed. Please refer to these
Operating and Maintenance Instructions manual if you are not certain
about any aspect of installing/operating/maintaining/ servicing or
otherwise handling the inlet isolation device properly.
Where referenced, the control system includes the monitoring panel and all associated
interlocking controls.
In addition to this document, other documents concerning the
Q-FlapCompact II/Plus inlet isolation device components may be
relevant. If relevant, please find these documents in the annex or in
the system documentation.
2.3 Intended use
Intended use includes that this Operating and Maintenance
Instruction manual must be read and understood and that the inlet
isolation device should only be operated and serviced in
accordance with these Operating and Maintenance Instructions.
Intended use The Q-FlapCompact II/ Q-FlapCompact IIPlus serves as an inlet isolation
device for dust category St1 (all sizes: DN 140 - DN 1000 (5.51-39.37 in))
and St 2 (sizes: DN 140 - DN 315 (5.51-12.40 in). See Chart, Section 1
Technical Data. The Q-FlapCompact II/ Plus devices are designed for
the maximum pressure surge resistance as indicated in the technical
datain Section 1. The inlet isolation device isonly effective against the
flow direction and is a one-way isolation valve. The inlet isolation device
must be installed in the following order ( in flow direction):
inlet isolation device-filter (enclosure) - fan.

page 13 of 91 USB-QFLCII-14804/0
Installation schema
Q-FlapCompact II/
Plus Filter (Container)
Q-FlapCompact II/ Plus inlet isolation device
Fan
Flow direction
Deviating installation situations are not allowed!
The inlet isolation device cannot be used for materials impeding the closing of
the flap blade in the event of an explosion. Additional important information:
–Installation position: horizontal
–Air flow velocity: 15 - 30 m/s
–The heating value of 23.8 MJ/kg must not be exceeded for the isolation of
metal dustexplosions. Exception: For inlet isolation devices sizes DN 140
up to DN 315 (5.51in – 12.40in), a test report isavailable for pure
aluminum dust with no limitations on heating value.
–The temperatures of the exhausted materials must be between 14°F to
140°F (-10°C to +60°C).
–The installation, start-up conditions and maintenance schedule as
specified by the manufacturer must be followed.
.– Installation and operation of the inlet isolation device must always be in
accordance with relevant current national and local standards of the
customer's country. The customer is responsible for compliance.

page 14 of 91 USB-QFLCII-14804/0
WARNING
Any use other than those defined above is not intended.
The manufacturer is not liable for personal injuries or damage to the system resulting
from non-compliance; In the event of non-compliance, the operator assumes the full
risk.
------------------------------------------------------------------------------------------------------------
Inadmissible use The following is not allowed:
–Exhausting of substances for which the system has not been designed.
–Changing and rebuilding of the system by the customer without
permission.
–Any mode of operation which may affect safety.
2.4 Personnel qualification
Skilled Personnel Only trained personnel may operate the inlet isolation device. The operator must
have proper qualifications, competence, and responsibility for any work to be carried
out must be clearly defined.
Only skilled personnel are authorized to perform the commissioning and servicing of
the system, preferably trained by the REMBE®, Inc.Service Consultant. Definition of
skilled personnel: personnel who have extensive knowledge of below-mentioned
regulations, directives and standards because of their specialized training and
experience with
•relevant local (including plant), state and national safety regulations
•relevant local (including plant), state and national accident prevention regulations
•basic knowledge of air technology
•basic knowledge of electrical engineering
•directives and acknowledged state-of-the-art technology doctrines (e.g. VDE
directives, DIN standards, NFPA standards, other local, state, national, plant
regulations)
Skilled personnel must:
•be able to analyze the work he/she has been assigned to, identify and avoid
possible risks and hazards; and
•be authorized by the person responsible for machine safety to perform the
required tasks.
Inspection by qualified
personnel Depending on national, and local, laws, regulations, guidelines and standards, the
installation location, conditions,and grounding may have to be checked by
qualified personnel at commissioning and regularly thereafter.
Systems with combustible dust explosion risk need to be checked by experts having
suitable qualifications.

page 15 of 91 USB-QFLCII-14804/0
2.5 Warranty
REMBE®warrants that the unit complies with the relevant German and European Regulations as
listed on the Manufacturer's Certificate. Specific regulations of the customer's country may not
have been taken into consideration because the manufacturer may not know the location of the
end user.
Our warranty does not include damage resulting from wear and tear, corrosion, pyrophoric or
internal and external chemical influences, improper handling,installation, operation and any
use other than intended originally (please see Section 2.3 Intended use).Fire and explosion
are excluded from warranty.
Warranty conditions Warranty conditions to be observed by the system operator are as follows:
•Loading and shipping in accordance with REMBE®instructions
•Proper storage before installation and commissioning
•Knowledge and implementation of the information, notes and references in
the operating manual
•Expert installation, commissioning and repair to the extent these services
are provided by the customer himself.
•Proper operation
•Compliance with operating parameters, such as
-dust type or additives
-dirty air dust volume
-dirty air temperature
-dirty air dust concentration
-dew point within dirty air
-air flow velocity
•Operation with intended and proper protection devices/systems
•Operation without modification to inlet isolation device
•Observing the service and inspection intervals, with service and inspections
completed by trained personnel. Any work performed is to be recorded in a
record log.
•Use of original spare parts only
•In the event of a defect or malfunction, and for its immediate and expert
handling, weask you to notify REMBE®, Inc. or your REMBE®
representative.
If exceptions have been agreed upon in contractual documents, the
conditions stipulated in those documents shall apply.
Expiration of warranty Warranties are voided in the event of non-compliance with above-
mentioned conditions, in the event of natural disasters and/or acts of God.

page 16 of 91 USB-QFLCII-14804/0
3 Safety
3.1 Safety warning
WARNING
Working safely is only possible if all instructions for this system as well as other
relevant system components have been read thoroughly and are adhered to
carefully.
Each person performing installation, commissioning, operation and servicing must
read the Operating and Maintenance Instructions and must understand every detail.
This also applies to personnel operating and working on the system only periodically.
The Operating and Maintenance Instruction manual should be within reach of the
system.
-------------------------------------------------------------------------------------------------------------------------
A number of directives and regulations shall be observed when installing and
operating production facilities. The regulations listed below are limited to the section
"explosion protection". Please refer to the Conformity Declaration.
Please note that the list below may not be complete! Please check your local, state,
national laws, regulations, standards for additional requirements for your particular
application.
Scope
Regulation
Contents
Fire and
explosion
protection
measures
EU-RL 94/9/EC
“ATEX 114“ - explosive areas
EU-Directive
19 99/92/EG
“ATEX 153“ – explosion protection for employee
EN 1127-1
explosion protection - basics and methodology
TRBS 2152 et seq
explosion protection rules (formerly ZH 1/10)
VDI 2263, part 1 - 6
etc.
“dust fires and dust explosions", themes: risks,
judgment, protection measures

page 17 of 91 USB-QFLCII-14804/0
3.2 Warning notices on the inlet isolation device
Warning labels on the inlet isolation device give notice of immediate hazards.
They have the following meaning:
Warning noticeMeaning:
Do not open the inspection
lid during operation or when
there is an explosion risk.
Do notopen during
operation/pay
attention
to flow direction
The inlet isolation device
must be installed in the same
flow direction as illustrated
by the arrow.
Potential equalization Labeling of the central connection point for the
equipotential bonding provided by the
customer.
3.3 Inspections
Inspection by a
qualified person Depending on national, state and local laws, regulations, guidelines and standards,
the installation location, conditions, and grounding may have to be checked by
qualified personnel at commissioning and regularly thereafter.
Inspection prior to com
‐
missioning by a quali
‐
Systems in explosive environments must be checked by a qualified person prior to first
fied person commissioning according to the Ordinance on Industrial Safety and Health
(BetrSichV) and Technical Rules for Operational Safety TRBS 1203 on their orderly
condition concerning assembly, installation and safe function.
Continuous inspection
by qualified persons Inspection has to be repeated by a qualified person every three years after significant
modification.
Inspection according to
TRBS 2153 Potential equalization has to be checked according to TRBS 2153 in regular intervals
Measurements concern-
ing air ventilation Required regular measurements concerning air ventilation must be carried out by
qualified persons with the necessary knowledge.

page 18 of 91 USB-QFLCII-14804/0
3.4 Health hazard due to exhausted substances
WARNING
Airborne dust, mist or vapor that may be inhaled or otherwise
result in direct contact with airborne materials can be a health hazard
Please provide protective equipment for the operating staff such as:
a) Safety glasses
b) Hearing
protection
c) Gloves
d) Protective clothing
e) Full face masks with appropriate filter cartridges (protection class
depending on specific dust hazard)
---------------------------------------------------------------------------------------------------------
WARNING
Alterations to the system, to ductwork or to the adjustments of inlet
isolation devices may cause pressure loss. Inadequately exhausted
substances can endanger the health of personnel! Therefore, alterations should
only be carried out after consulting REMBE®.
---------------------------------------------------------------------------------------------------------
3.5 Danger of crushing and overturning
To avoid the risks mentioned below, this inlet isolation device should not be
operated until assembly has been completed. This device should only be
serviced when the system has been shut down.(see Section 3.1 Safety
instructions during maintenance)
hazard near the inlet
Isolation device
WARNING
There is a danger of physical harm to personnel near the device.
The system should be operated only after the ductwork has been connected and
the inspection lid has been closed so that the dangerous area cannot be reached
with the extremities.
Do not operate this inlet isolation device while the inspection lid is open!
---------------------------------------------------------------------------------------------------------------

page 19 of 91 USB-QFLCII-14804/0
3.6 Crash hazard/danger of falling
Transport by crane
loops
WARNING
There is danger of physical harm to personnel near the inlet
isolation device if the device is not properly secured to
equipment having sufficient load capacity to transport the device.
Death or serious injury can result if the inlet isolation device crashes!
a) Please take into account adequate load carrying capacity!
b) Fasten the lifting equipment to the following points:
-Eyebolts that are screwed to the connecting flanges for
sizes up to DN 560. Transport hangers may also be
placed around the pipe connection for sizes up to DN
560.
-Use attached lifting lugs for sizes DN 630 and larger.
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Crashing hazard at ver
‐
tical ladders and plat
‐
forms
WARNING
A danger of falling, resulting in death or serious injury, exists if the inlet
isolation device is equipped with a stepladder and with platforms for
servicing.
a) The stepladder should only be used by trained staff; and
b) The stepladder should be secured against unauthorized access/use.
If the inlet isolation device is located within an explosion panel’s relief
area, a stepladder must only be used when the system is switched off!
3.7 Electrical hazards
DANGER
There is a risk of injury or death caused by electrical current from electrical
components and by the electrical switch and control unit!
Work on these components must only be performed by certified electricians.
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All electrical components should be connected to a protective system.

page 20 of 91 USB-QFLCII-14804/0
3.8 Fire and explosion hazard
A residual risk of injury remains on systems used for the extraction of combustible or
explosive substances despite fire and explosion protective measures. The
manufacturer cannot provide a 100% safety guarantee and does notassume liability
in case of damage.
An explosion risk exists if, among other circumstances,
–combustible dust is of small particle size (<approx. 0.5mm). (Caution!
Even fine light alloy dusts can be combustible and thus explosive!),or
–solvents are being extracted,or
–other explosive gases are being extracted
this list is not exclusive!
3.8.1 Explosion protection document
Where ATEX is applicable:
If an explosion hazard exists, the system operator is obliged, according to EU
directive 99/92/EC (ATEX 153), to draw up an explosion protection document
before commissioning the inlet isolation device. This document should include
the following:
–Specification of the system, the process, etc.
–Zone classification
–Data on relevant combustible dust explosion characteristics
–Protective measures
–Operator instructions
–Etc.
Other areas:
In addition to any internal documentation your organization may require,
please check with your local authorities having jurisdiction (AHJ)
for regulations and standards that may be applicable in your area such as
OSHA, NFPA, local building codes and electrical codes, for documenting
requirements prior to commissioning.
Explosive hazard areas shall be labeled with the “EX” warning
sign.