Trox Technik REH Series User manual

Centrifugal fans
REH; RZH; BVREH; BVRA
Installation and operating manual
Read the instructions prior to performing any task!
Fire gas versions checked according to EN 12101-3
GB/en

1925113, 1, GB/en
© 2018
TROX X-FANS GmbH
Heinz Trox Str. 1
36251 Bad Hersfeld, Germany
Telephone: [phone]
Fax: [phone]
email: [email protected]
Internet: www.trox-xfans.de
08/2019
Centrifugal fans REH; RZH; BVREH; BVRA
2

1 General............................................................... 5
1.1 About this manual........................................ 5
1.2 Explanation.................................................. 5
1.3 Limitation of liability..................................... 6
1.4 Copyright..................................................... 6
1.5 Replacement parts...................................... 6
1.6 Liability for defects....................................... 6
1.7 Customer service......................................... 6
2 Safety.................................................................. 8
2.1 System owner's responsibility..................... 8
2.2 Personnel requirements.............................. 8
2.2.1 Qualifications............................................ 8
2.2.2 Unauthorised persons.............................. 9
2.3 Correct use.................................................. 9
2.4 Explosion protection.................................... 9
2.5 Personal protective equipment.................. 11
2.6 Specific hazards........................................ 12
2.7 Safeguards................................................ 13
2.8 Behaviour in the event of hazardous situa-
tions or accidents...................................... 14
2.9 Labelling.................................................... 14
3 Technical data.................................................. 16
3.1 Design versions......................................... 16
3.1.1 Type codes for centrifugal fans.............. 16
3.1.2 Additional labelling................................. 16
3.2 Series........................................................ 16
3.2.1 Type REH-M3......................................... 16
3.2.2 Type REH-B-M....................................... 16
3.2.3 Type REH-R........................................... 17
3.2.4 Type RZH............................................... 17
3.2.5 Type BVREH.......................................... 17
3.2.6 Type BVRA............................................. 17
3.3 Connection values..................................... 17
3.4 Noise emission values............................... 17
3.5 Operating conditions................................. 18
3.5.1 Information on setting up fans that are
installed outdoors................................... 18
3.6 Operating modes....................................... 18
3.6.1 S1 continuous operation......................... 18
3.6.2 S9 speed-controlled operation............... 18
3.6.3 Smoke extract........................................ 19
3.7 Rating plate............................................... 20
4 Parts and function........................................... 21
4.1 Overview.................................................... 21
4.2 Description of the sub-assembly............... 21
4.2.1 Casing.................................................... 21
4.2.2 Impeller................................................... 21
4.2.3 Belt drive................................................ 22
4.2.4 Fixing...................................................... 22
4.2.5 Actuator.................................................. 22
4.2.6 Additional equipment for centrifugal
fans......................................................... 22
5 Transport, packaging and storage................. 24
5.1 Safety notes regarding transport............... 24
5.2 Checking delivered goods......................... 24
5.3 Packaging.................................................. 24
5.4 Symbols on the packaging........................ 25
5.5 Factory settings......................................... 25
5.6 Transport................................................... 25
5.7 Storing packages....................................... 26
6 Installation and commissioning..................... 27
6.1 Safety........................................................ 27
6.2 Installation................................................. 28
6.2.1 Assembly of the fan................................ 28
6.2.2 Additional smoke extract work................ 29
6.2.3 Assembly of the flexible connector......... 30
6.2.4 Assembly of V-pulleys for anti-vibration
elements................................................. 30
6.3 Commissioning.......................................... 30
6.3.1 System with inductor/return smoke con-
trol dampers........................................... 30
6.3.2 Reversing the direction of rotation.......... 30
6.3.3 Explosion-proof fans............................... 31
6.3.4 Correct initial commissioning.................. 31
7 Operation.......................................................... 32
7.1 Safety........................................................ 32
7.2 Stopping in an emergency......................... 32
8 Faults................................................................ 33
8.1 Safety........................................................ 33
8.2 List of faults............................................... 35
8.3 Commissioning once a fault has been rec-
tified........................................................... 37
9 Maintenance..................................................... 38
9.1 Personnel requirements............................ 38
9.2 Safety........................................................ 38
9.3 Maintenance.............................................. 39
9.3.1 Use of monitoring systems..................... 40
9.4 Maintenance.............................................. 40
9.4.1 Lubrication.............................................. 40
9.4.2 Replacing the motor bearings................ 40
9.5 Repair........................................................ 40
9.5.1 Replacing the impeller and electric
motor...................................................... 40
9.6 Measures following maintenance work..... 41
10 Decommissioning............................................ 42
10.1 Safety...................................................... 42
10.2 Disassembly............................................ 42
10.3 Disposal................................................... 42
11 Lists of replacement parts.............................. 43
Table of contents
Centrifugal fans REH; RZH; BVREH; BVRA 3

12 Index................................................................. 44
Appendix.......................................................... 46
A Commissioning report.................................. 47
B Maintenance report...................................... 49
C Tables........................................................... 52
D Installation manuals..................................... 55
Table of contents
Centrifugal fans REH; RZH; BVREH; BVRA4

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Assembly, commissioning and maintenance of the
fans
Measurement, analysis and evaluation of all the
data required for operation (e.g.: pressure, volume,
sound, vibrations)
Operational balancing
Replacement parts service
Individual advice and help placing orders
General
Customer service
Centrifugal fans REH; RZH; BVREH; BVRA 7

2 Safety
This section provides an overview of all the important
safety issues for the best possible protection of per-
sonnel as well as for safe and fault-free operation.
Failure to comply with the instructions and safety notes
listed in this manual can lead to serious hazards.
2.1 System owner's responsibility
The unit is intended for commercial use. The system
owner is therefore subject to the legal obligations of
occupational health and safety regulations. In addition
to the safety notes in this manual, the applicable regula-
tions for safety, accident prevention and environmental
protection must also be complied with. In particular:
The system owner must be aware of the applicable
occupational health and safety regulations and carry
out a risk assessment to determine any additional
hazards that may exist or result from the specific
working conditions at the installation location of the
unit. The system owner has to create operating
instructions for the unit that reflect the results of this
risk assessment.
The system owner must ensure, throughout the
unit’s entire operating period, that the operating
instructions they create comply with the applicable
standards and guidelines and must adapt them as
required.
The system owner must clearly regulate and define
the responsibilities for assembly / installation, opera-
tion, maintenance and cleaning.
The system owner has to ensure that all individuals
who handle or use the unit have read and under-
stood this manual.
The system owner must regularly provide training
for the personnel and inform them of any dangers.
The system owner must provide the employees with
the required personal protective equipment.
The system owner is also responsible for ensuring that
the unit is always in a technically perfect condition. The
following therefore applies:
The system owner must ensure that the mainte-
nance intervals specified in this manual are
observed.
The system owner must have all safeguards tested
regularly to ensure that they are functional and com-
plete.
2.2 Personnel requirements
2.2.1 Qualifications
WARNING!
Danger of injury due to insufficiently qualified
individuals!
Incorrect use may cause considerable injury or
damage to property.
Therefore:
– Only specialist personnel must carry out work.
The following degrees of qualification are required for
the work described in the operating manual:
Instructed person
The instructed person has been certifiably instructed by
the system owner with regard to the tasks delegated to
them and potential hazards in the event of inappropriate
behaviour.
Instructed person
The instructed person has been instructed by the
system owner with regard to the tasks delegated to
them and potential hazards in the event of inappropriate
behaviour.
Skilled qualified electrician
Skilled qualified electricians are individuals who have
sufficient professional or technical training, knowledge
and actual experience to enable them to work on elec-
trical systems, understand any potential hazards related
to the work under consideration, and recognise and
avoid any risks involved.
The qualified electrician is trained especially for the field
in which they work and is familiar with the relevant
standards and regulations.
Specialist personnel
Specialist personnel are individuals who have sufficient
professional or technical training, knowledge and actual
experience to enable them to carry out their assigned
duties, understand any potential hazards related to the
work under consideration, and recognise and avoid any
risks involved.
Only persons who can be expected to perform their
work reliably are acceptable as personnel. Individuals
whose reaction time is delayed due to alcohol, drugs or
other medication must not carry out any work.
The age-specific and occupational regulations appli-
cable at the operation site must be observed when
appointing personnel.
Safety
Personnel requirements > Qualifications
Centrifugal fans REH; RZH; BVREH; BVRA8

2.2.2 Unauthorised persons
WARNING!
Danger for unauthorised persons!
Unauthorised persons who do not fulfil the require-
ments specified here are usually not aware of the
dangers in the work area.
Therefore:
– Keep unauthorised persons away from the work
area.
– Instruct these persons to leave the hazardous
area or work area.
– Stop work while unauthorised persons are
present in the work area.
2.3 Correct use
The unit is only designed and constructed for the
intended use described here.
The ventilation fan is only designed to convey
normal, dust-free and conditioned air, and other
non-aggressive, non-explosive gases.
The smoke exhaust fan is also designed to
convey fire gases in accordance with its tempera-
ture and time specifications.
Replace fan after use in the event of a fire!
The explosion-proof fan is designed to convey
explosive media and/or for installation in poten-
tially explosive atmospheres according to its
labelling.
Other intended uses approved by the manufacturer and
derived from the optional fan equipment are detailed in
the customer specifications.
WARNING!
Danger due to incorrect use!
Any use that extends beyond the correct use and/or
different use of the unit can lead to hazardous situa-
tions.
Therefore:
– Only use the unit for its correct use.
– Strictly comply with all of the information in this
operating manual.
Claims of any type for damages resulting from incorrect
use will not be accepted.
The system owner is solely responsible for all damages
resulting from incorrect use.
2.4 Explosion protection
ATEX Product Directive 2014/34/EU (ATEX 95)
The aim of the Directive is to protect individuals who
work in potentially explosive atmospheres. The Directive
contains the essential health and safety requirements
that the manufacturer must observe and that must be
verified by means of appropriate conformity assess-
ments. Since 30 June 2003, only units, components and
protective systems which comply with the ATEX Product
Directive 2014/34/EU can be used.
The deliverable version options are highlighted below:
Equipment groups
Equipment
group
For use in....
I Units for use in mining
II Units for use in the other areas
Classification
Zone Category EPL Safety
0 1 Ga Very high level of
safety
1 2 Gb High level of safety
2 3 Gc Normal operation
Atmosphere
G = Gases
D = Dusts
Explosion group (gas group)
Gases and vapours are split into three explosion groups
(IIA, IIB and IIC) based on their particular flammability.
The danger increases from explosion group IIA to IIC.
(The higher explosion group includes the lower ones.)
Safety
Explosion protection
Centrifugal fans REH; RZH; BVREH; BVRA 9

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2.6 Specific hazards
Electric current
DANGER!
Danger of death due to electric current!
Danger of electric shock! Do not touch any live com-
ponents! Damaged insulation or damaged parts are
a life threatening hazard.
– Have work on the electrical system carried out
only by skilled qualified electricians.
– If the insulation is damaged, disconnect the
power supply immediately and have the insula-
tion repaired.
– Before you start working on electric systems and
equipment, switch off the supply voltage and
secure it against being switched on accidentally.
Comply with the 5 safety rules:
– Disconnect.
– Secure it against being switched on acciden-
tally.
– Ensure that no voltage is present.
– Connect to the earth; short circuit connection.
– Either cover nearby parts that carry a voltage
or install barriers.
– Do not bypass or disable any circuit breakers. Be
sure to maintain the correct current rating when
you replace a circuit breaker.
– Ensure that live parts do not come into contact
with moisture. Moisture can cause a short circuit.
Noise
WARNING!
Hearing damage due to noise!
The noise level in the work area can cause severe
hearing damage.
– Always wear hearing protection while working.
– Only remain in the hazardous area if absolutely
necessary.
Moving components
WARNING!
Risk of injury due to moving components!
Moving components can cause serious injuries.
– Do not reach into or handle moving components
during operation.
– Never open covers during operation.
– The fan does not stop immediately! Check that
no components are moving before you open the
covers.
–Wear tight-fitting clothing with low tear resistance
in the hazardous area.
Rotating parts
WARNING!
Risk of injury from rotating parts!
Rotating parts in the fan can cause serious injuries.
– Do not reach into or handle the moving impeller
wheel during operation.
– Do not open covers and maintenance covers
during operation.
– Ensure that the impeller wheel is not accessible
during operation.
–The fan does not stop immediately! Ensure that
none of the components are still moving before
opening the covers for maintenance purposes.
– Switch off the unit and secure it against being
switched back on again before starting any work
on moving fan components. Wait until all parts
have come to a standstill.
Vibrations
WARNING!
Risk of injury due to strong vibrations!
Strong vibrations can result in serious injury and
chronic health impairments in the long term. The
source of the vibration can be decoupled from the
surrounding area using a vibration damper.
–Do not deactivate the vibration damper.
– Do not remain in the vibrating area during opera-
tion.
Safety
Specific hazards
Centrifugal fans REH; RZH; BVREH; BVRA12

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Fig. 3: Secured isolator
The isolator can be locked in the “0” position with a pad-
lock to prevent reactivation.
Additional smoke exhaust fan option
The isolator can also be locked in the “1” position with a
padlock to prevent deactivation in order to guarantee
the smoke extract function.
DANGER!
Danger of death due to impermissible activation
and deactivation!
Individuals can enter the hazardous area if the iso-
lator has been locked with a padlock to prevent acti-
vation. Activation could cause life-threatening injuries
to these individuals.
If the fan has been secured with a padlock to prevent
it from being deactivated, it can be equipped with an
automatic start-up feature in the event of a fire.
Deactivation ensures that the fan is not ready for
operation in the event of a fire and cannot transport
fire gases.
Therefore:
– Never remove the padlock without authorisation.
– Before removing the padlock, ensure that there
are no more individuals in the hazardous area.
Integration in an emergency stop concept required
The unit is designed for use within a system. It does not
have its own control and there is no autonomous emer-
gency stop function.
Before the unit is unit started up, install emergency stop
equipment for the unit and connect it to the system con-
trol’s safety chain.
This does not apply to smoke exhaust fans.
Connect the emergency stop equipment in such a way
that any hazardous situations for individuals and prop-
erty are excluded in the event of the power supply being
interrupted or the power supply being activated fol-
lowing an interruption.
The emergency stop equipment must be freely acces-
sible at all times.
2.8 Behaviour in the event of haz-
ardous situations or accidents
Preventative measures
Always be prepared for accidents or fire!
Keep first aid equipment (first aid kit, blankets, etc.)
and fire extinguishers close at hand.
Familiarise personnel with accident reporting, first
aid and rescue equipment.
Keep access paths for rescue vehicles clear.
Measures in the event of accidents
Trigger an emergency stop immediately, and put the
isolator into the “0” position if necessary.
Implement first aid measures.
Rescue individuals from the hazardous area.
Inform the responsible person at the operation site.
Notify the emergency services.
Clear access paths for rescue vehicles.
2.9 Labelling
The following symbols and signs are usually found in
the work area. They apply to the very location where
they are found.
WARNING!
Risk of injury due to illegible symbols!
Over time, stickers and signs can become dirty or
otherwise illegible.
Therefore:
– Ensure that all of the safety, warning and oper-
ating information is clearly legible.
– Replace illegible signs or stickers immediately.
Safety
Labelling
Centrifugal fans REH; RZH; BVREH; BVRA14

Fig. 4: Terminal box
The (Fig. 4/1) “Danger of death due to electric current”
symbol is attached to the terminal box.
Safety
Labelling
Centrifugal fans REH; RZH; BVREH; BVRA 15

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3.2.3 Type REH-R
Fig. 8: Type REH-R
3.2.4 Type RZH
Fig. 9: Type RZH
3.2.5 Type BVREH
Fig. 10: Type BVREH
3.2.6 Type BVRA
Fig. 11: Type BVRA
3.3 Connection values
The connection values are dependent on the type of
electric motor that is installed (rating plate of electric
motor, see
Ä 3.7 ‘Rating plate’ on page 20).
3.4 Noise emission values
The characteristic noise values of the fans are specified
in the characteristic curve sheets in the catalogue/
product configurator. The characteristic values are
dependent on the operating point.
Technical data
Noise emission values
Centrifugal fans REH; RZH; BVREH; BVRA 17

3.5 Operating conditions
Type REH/RZH
Data Value Unit
Min./max. flow medium temperature -20/+60 °C
Min./max. ambient temperature -20/+60 °C
Max. operating time according to EN 60034-1 24 hrs/day
Smoke extract None -
Installation horizontal -
Type BVREH/BVRA
Data Value Unit
Min./max. flow medium temperature -20/+60 °C
Min./max. ambient temperature -20/+60 °C
Max. operating time according to EN 60034-1 24 hrs/day
Smoke extract 2) -
Installation horizontal -
2) Temperature/time category according to EN 12101-3 (see
Ä 3.1 ‘Design versions’ on page 16)
ATEX
Data Value Unit
Min./max. flow medium temperature -20/+40 3) °C
Min./max. ambient temperature -20/+40 °C
Max. operating time 24 hrs/day
Smoke extract None -
Installation horizontal -
3) Other values upon request
3.5.1 Information on setting up fans that
are installed outdoors
3.5.1.1 Penetration of precipitation
3.5.1.2 Formation of condensation
3.5.1.3 Stability
3.5.1.4 Penetration of foreign matter
3.6 Operating modes
3.6.1 S1 continuous operation
The fans are designed for continuous operation (S1
operating mode according to DIN EN 60034-1).
3.6.2 S9 speed-controlled operation
General
Fans are speed-controlled to adjust the operating point
to the system and utilisation requirements.
Speed control, maximum speed
The maximum speed specified on the rating plate must
not be exceeded.
Technical data
Operating modes > S9 speed-controlled operation
Centrifugal fans REH; RZH; BVREH; BVRA18

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CE marking of smoke exhaust fans (BV)
Fig. 12: CE marking
The rating plate of the smoke exhaust fans (BV) also
contains information about the application and permis-
sible temperature / time category.
In addition, a CE mark as per EN 12103, Part 3, is
attached to demonstrate product conformity.
3.7 Rating plate
Fig. 13: Fan’s rating plate
Manufacturer
Year of manufacture
Manufacturing no.
Part no.
Type
Volume flow rate
Speed
Motor rating
Total pressure increase
Voltage (V) / frequency (Hz)
The rating plate of the explosion-proof fan also includes
the following information:
Explosion protection mark
Category
Fig. 14: Electric motor’s rating plate
Technical data
Rating plate
Centrifugal fans REH; RZH; BVREH; BVRA20