ZIEHL-ABEGG RH Series User manual

RH../ER../GR..
Radial impellers RH.. and plug fans ER../GR.. directly powered with
IEC standard motor
Assembly instructions
Keep for reference!
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english

Content
1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Scope of documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Structure of the assembly instructions . . . . . . . . . . . . . . . . . . . . 4
1.3 Target group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Exclusion of liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Improper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Explanations of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Product safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.6 Requirements placed on the personnel / due diligence . . . . . . . 8
2.7 Work on the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.8 Modifications / interventions in the device . . . . . . . . . . . . . . . . . 9
2.9 Operator’s obligation of diligence . . . . . . . . . . . . . . . . . . . . . . . . 10
2.10 Employment of external personnel . . . . . . . . . . . . . . . . . . . . . . . 10
3 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Area of application/Notes on use . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Note on the ErP directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Transport, storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Disposal / recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 General notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Erecting the equipment design ER, GR . . . . . . . . . . . . . . . . . . . 14
4.3 Mounting RH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4 Installation and usage information . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.1 Optimal installation distances according to for RH../ ER../ GR..
fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.2 Information for montage . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.4.3 Possible sources of faults during installation . . . . . . . . . . . 20
4.5 Assembly in a humid atmosphere . . . . . . . . . . . . . . . . . . . . . . . 20
4.6 Connection lead & terminal box . . . . . . . . . . . . . . . . . . . . . . . . . 20
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5 Electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.3 Frequency inverter and EMC . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.4 Operation with frequency inverter . . . . . . . . . . . . . . . . . . . . . . . . 23
5.5 Motor protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.1 Prerequisites for commissioning . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2 Procedure for commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 Trouble shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1 Code of behaviour in the event of faults . . . . . . . . . . . . . . . . . . . 26
7.2 Possible causes and remedial measures . . . . . . . . . . . . . . . . . . 26
8 Service work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.1 Repairs / maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9 Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.1 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2 EC declaration of incorporation . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.3 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.4 Manufacturer reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
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1 General notes
Compliance with the following instructions is mandatory to ensure the functionality and
safety of the product. If the following instructions given especially but not limited for
general safety, transport, storage, mounting, operating conditions, start-up, mainte-
nance, repair, cleaning and disposal / recycling are not observed, the product may not
operate safely and may cause a hazard to the life and limb of users and third parties.
Deviations from the following requirements may therefore lead both to the loss of the
statutory material defect liability rights and to the liability of the buyer for the product that
has become unsafe due to the deviation from the specifications.
1.1 Scope of documentation
This documentation applies to free running centrifugal impellers of model range RH.., as
well as device model ranges ER.. and GR.. with standard motors (for type designation,
see rating plate).
The complete documentation for the product consists of these fan assembly instructions
and the motor operating instructions.
To ensure the final suitability of the product for the permissible conditions of use
specified in the order acknowledgement, it is absolutely imperative to observe the
fan assembly instructions and the motor operating instructions. In particular, this
applies to safety instructions, storage, transport, assembly and service.
If necessary, you can request the motor operating instructions from the motor manufac-
turer in your desired language.
Information
In the case of fans with the quality mark (see rating plate), please note the related
specifications depending on the application location!
1.2 Structure of the assembly instructions
Before installation and start-up, read this assembly instructions carefully to ensure
correct use!
We emphasize that these assembly instructions apply to specific units only, and are in
no way valid for the complete system!
Use these assembly instructions to work safely with and on the device. They contain
safety instructions that must be complied with as well as information that is required for
failure-free operation of the device.
Keep these assembly instructions together with the device. It must be ensured that all
persons that are to work on the device can refer to the assembly instructions at any time.
Keep the assembly instructions for continued use. They must be passed-on to all
successive owners, users and final customers.
1.3 Target group
The assembly instructions address persons entrusted with planning, installation, com-
missioning and maintenance and servicing and who have the corresponding qualifica-
tions and skills for their job.
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1.4 Exclusion of liability
Concurrence between the contents of these assembly instructions and the described
hardware and software in the device has been examined. It is still possible that non-
compliances exist; no guarantee is assumed for complete conformity. To allow for future
developments, construction methods and technical data given are subject to alteration.
We do not accept any liability for possible errors or omissions in the information con-
tained in data, illustrations or drawings provided.
ZIEHL-ABEGG SE is not liable for damage due to misuse, improper use or as a
consequence of unauthorized repairs or modifications.
1.5 Copyright
These assembly instructions contain copyright protected information. The assembly
instructions may be neither completely nor partially photocopied, reproduced, translated
or put on data medium without previous explicit consent from ZIEHL-ABEGG SE. In-
fringements are liable for damages. All rights reserved, including those that arise through
patent issue or registration on a utility model.
2 Safety
2.1 Safety instructions
This chapter contains instructions to prevent personal injury and property damage.
These instructions do not lay claim to completeness. In case of questions and problems,
please consult our company technicians.
Attention!
•Non-compliance with the information and safety instructions listed in these assembly
instructions can cause serious health and safety risks!
•It is essential to observe the notes in the motor manufacturer’s operating instructions,
which is part of the scope of supply.
Be aware of the following Points:
•Operate the fan only in accordance with its intended use and only up to the max.
permissible operating speed according to "n_max" on the fan / impeller rating plate.
Exceeding the maximum permissible operating speed will lead to a hazard situation
due to the high kinetic energy. The impeller can burst - risk of fatal injury!
•Countercurrent braking by interchanging two supply phases is not allowed!
•In a fan system consisting of a motor, frequency inverter and impeller, impermissibly
high vibrations can occur in narrowly limited speed ranges. Continuous duty is not
permissible under these conditions (see operating with frequency inverter). The
impeller could burst - danger of death!
•When operating by means of frequency converter, ensure that the waiting time is
maintained after safety disconnection - see manufacturer´s operating instructions
regarding capacitor discharge time.
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•The conveyance of solid matter or solids content in the conveying medium is not
permissible and can lead to dangerous situations. ZIEHL-ABEGG rejects any liability
for damage of any kind as a result of such use.
•Only operate the fans in the permissible temperature ranges (see order acknowledge-
ment).
•Assembly and electrical connection may only be carried out by skilled personnel in
compliance of applicable standards and these assembly instructions.
•If the impeller is accessible, guard grilles must be installed according to EN 13857.
These must not be changed and must be adequately secured. The appropriate
specified screw size and quality must be used.
•Objects which can fall onto the fan from a greater height must not be allowed to enter
the impeller.
–Since a residual risk due to falling objects, incorrect behaviour, etc. cannot be
completely ruled out, the designer, operator or manufacturer of the installation or
system in which the fan is to be installed, must prevent any potentially hazardous
situation from arising by means of appropriate safety measures in line with stand-
ard EN ISO 12100.
•The operator is responsible for maintenance of the fan.
•Compliance with the EMC Directive only exists if the fan is directly connected to the
main power supply. If the fan is installed in a system or combined with other products,
the system manufacturer is responsible for compliance with the EMC Directive.
•Use the fan and electrical system only according to these assembly instructions and
keep in a safe operating state.
•The fan may only be put into operation after it has been properly installed.
•To ensure operability, safety devices (especially the overheating protection equip-
ment) must be checked regularly.
•The instructions for installation and use must be complete and available to users at
any time.
•No safety and warning instructions on the fan may be removed, and the user must
make sure that they are legible.
•The persons responsible for the installation, start-up, operation and maintenance of
the device must be competent and possess sufficient experience to correctly perform
their work.
•In addition, they must know the European standards and guidelines (at national and
regional level and if applicable the in-house regulations) for safety and hazard
prevention. A new user may only work under the supervision of an experienced
operator.
•This device must not be used by persons with limited physical and mental abilities.
Moreover, the minimum legal age must be observed, the users must be adequately
trained.
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2.2 Intended use
Attention!
•The fans are only intended for the conveyance of air or mixtures similar to air.
•Any other use above and beyond this is considered not for the intended purpose
unless agreed otherwise by contract. The manufacturer will not be liable for any
damage resulting from this. The individual or company using it bears the sole risk.
•Built-in fans with VDE approval (see rating plate) are designed to be installed inside
devices and are not suitable for the direct mains connection.
•Reading these document and complying with all contained instructions -especially the
safety notifications contained therein -are considered part of intended use.
•To consider is also the documentation of attached components.
2.3 Improper use
Improper use / reasonably foreseeable misuse
•Conveyance of aggressive and explosive gaseous media.
•Use in areas at risk of explosion for conveying gas, mist, vapours or mixtures of the
above.
•Transfer of solids or solids content in the transfer medium.
•Operation with iced up impellers.
•Conveyance of abrasive or adhesive media.
•Conveyance of liquid media.
•Operation of plug fans outside devices.
•Connect built-in fans to open flue pipes of gas and other firing devices.
•Use of the fan and add-on parts (e.g. guard grille) as a resting surface or climbing aid.
–Fans are not designed for walking on even with an additive diffusor attachment
(retrofit kit)! Do not climb onto fans without suitable aids.
•Unauthorised constructional modifications to the fan.
•Operation of the fan as a safety component or for the performance of safety-relevant
functions in the sense of EN ISO 13849-1.
•Blocking or braking of the fan by inserting objects.
•Use with direct contact with foodstuffs or cosmetic and pharmaceutical products.
•Use of the fan as an independent household appliance.
•Use as a fire gas or smoke extraction fan (special application according to
DIN EN 12101-3).
•Use with vibration loading by customer device. Resonant operation and operation
with severe vibrations or oscillation.
•Loosening of fan blade, impeller, motor suspension and balancing weight.
•All applications not listed in the intended use.
Attention!
Not the manufacturer, rather the operator of the device is liable for any personal harm or
material damage arising from non-intended use.
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2.4 Explanations of symbols
Safety instructions are highlighted with warning triangles and are depicted
according to the degree of hazard as follows.
Attention!
General hazardous area. Death or severe injury or significant property damage can
occur if the corresponding precautions are not taken!
Danger due to electric current
Danger by dangerous, electric voltage! Death or severe injury can occur if the
corresponding precautions are not taken!
Information
Important additional information and advice for user.
2.5 Product safety
The device conforms to the state of the art at the time of delivery and is fundamentally
considered to be reliable. The device and its accessories must only be used in a flawless
condition and installed and operated in compliance with the assembly instructions and/or
operating instructions. Operating outside the device's technical specifications (see name
plate and attachment / technical data) can lead to a defect in the device and additional
damage!
Information
A separate fault and performance monitoring-system with an alarm signal function is
necessary in order to prevent personal injuries and material damages during malfunc-
tions and in case the device fails. Substitute operation must be taken into consideration!
The design and installation of the system must comply with local regulations and
directives.
2.6 Requirements placed on the personnel / due diligence
Persons entrusted with the planning, installation, commissioning and maintenance and
servicing in connection with the frequency inverter must have the corresponding qual-
ifications and skills for these jobs.
In addition, they must be knowledgeable about the safety regulations, EU/EC directives,
rules for the prevention of accidents and the corresponding national as well as regional
and in-house regulations. Personnel to be trained or instructed and apprentices are only
permitted to work on the device under the supervision of an experienced person. This
also applies to personnel undergoing general training. Comply with the legal minimum
age.
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2.7 Work on the device
Information
Mounting, electrical connection, and start-up operation may only be carried out by an
electrical specialist in accordance with electrotechnical regulations (e.g. DIN EN 50110
or DIN EN 60204)!
Danger due to electric current
•It is generally forbidden to carry out work on electrical live parts. Protection class of the
device when open is IP00! It is possible to touch hazardous voltages directly.
•The safe isolation from the supply must be checked using a two-pole voltage
detector.
•When operation with a frequency inverter the protective conductor is carrying high
discharge currents (irrespective of the clock frequency, current-source voltage and
motor capacity). Earthing in compliance with VDE specifications shall therefore be
observed even for testing and trial conditions (EN 50 178, Art. 5.2.11). Without
earthing, dangerous voltages can be present on the motor housing.
•Maintenance work may only be carried out by suitably qualified personnel.
Attention, automatic restart!
•The fan / motor may switch on and off automatically for functional reasons.
•After power failure or mains disconnection an automatic restart of the fan takes place
after voltage return! Therefore the fan must be disconnected from voltage before
doing any work (see service work).
•Wait for the fan to come to a complete standstill before approaching it!
Danger of being sucked in!
Do not wear loose or hanging clothing, jewellery, etc., tie together long hair and cover it.
2.8 Modifications / interventions in the device
Attention!
For reasons of safety, no unauthorized interventions or modifications may be made on
the device. All planned modifications must be authorized by the manufacturer in writing.
Use only genuine spare parts / genuine wearing parts / genuine accessories from
ZIEHL-ABEGG.These parts were specifically designed for the device. There is no
guarantee that parts from non-original sources are designed and manufactured in
correspondence with load and safety requirements.
Parts and optional equipment not supplied by ZIEHL-ABEGG are not approved by
ZIEHL-ABEGG for use.
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2.9 Operator’s obligation of diligence
•The contractor or owner must also ensure that the electric systems and equipment
are operated and maintained in accordance with electro-technical regulations.
•The owner is obliged to ensure that the device is operated in perfect working order
only.
•The device may only be used as intended.
•You must periodically examine the safety equipment for their properly functioning
condition.
•The assembly instructions and/or operating instructions are always readily available
at the location where the device is being used, are complete and are in legible
condition.
•These persons are regularly instructed in all applicable questions regarding occupa-
tional safety and environmental protection and are knowledgeable regarding the
assembly instructions and/or operating instructions and, especially, are familiar with
the safety instructions contained therein.
•All safety and warning notices attached to the device are never removed and remain
legible.
2.10 Employment of external personnel
Maintenance and service work are frequently carried out by external employees who
often do not recognize the specific situations and the thus resulting dangers.These
persons must be comprehensively informed about the hazards in their area of activity.
You must monitor their working methods in order to intervene in good time if necessary.
3 Product overview
3.1 Area of application/Notes on use
The fans / motors are not ready-for-use products, but conceived as components for
ventilation systems (type designation see rating plate).
The fans may not be operated until they are installed in line with their intended use. The
supplied and certified guard grille of ZIEHL-ABEGG SE fans is designed in accordance
with DIN EN ISO 13857 Table 4 (from the age of 14 up). In the event of deviations,
further structural protective measures must be taken for safe operation.
•Any use below -10 °C is dependent on not being subjected to unusual, sudden or
mechanical loads or stresses on the material (see minimal permissible ambient
temperature).
•Corrosion is possible at the cutting edges on sendzimir galvanised parts.
Attention!
If the motor/fan is used in applications where a ignitable atmosphere can form in the
event of a fault, e.g. due to leakage, the user must assess the risks of ignition and take
appropriate precautions to prevent ignition.
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3.2 Note on the ErP directive
ZIEHL-ABEGG SE wishes to point out that, based on the directive (EU) no. 327/2011 of
the Commission of 30th of March 2011 for enforcing directive 2009/125/EC (hereinafter
referred to as ErP directive), the operational area of certain fans within the EU is bound
by certain prerequisites.
The fan may only be used within the EU when it meets the requirements of the ErP
directive.
If the said fan does not have a CE mark (cf. especially the rating plate), use of this
product within the EU is not admissible.
All ErP-relevant information comprises measurements which are determined using a
standardised measurement set-up. More details can be obtained from the manufacturer.
Further information about the ErP directive (Energy related Products-Directive) can be
found on www.ziehl-abegg.de search key: "ErP".
3.3 Transport, storage
Attention!
•Wear safety clothing / shoes and cut-resistant safety gloves when handling.
•Avoid shocks and impacts to the device during the transport.
•Avoid extreme humidity, heat or exposure to cold (see technical data).
•Improper storage can result in preliminary damage to the motor, which may lead to
premature failure. Only after correct installation do the motors comply with the
specified degree of protection.
•Watch out for possible damage to the packaging or fan.
•Fix pallets during transport.
•Do not stack pallets.
•Transport the fan(s) either in the original packaging or, in the case of larger fans, on
the dedicated transportation fixtures.
•Depending on the type: Lifting eyes, bore holes in the housing flange, motor bed,
fastening brackets and support plates, bore holes in the motor housing for screwing in
eye bolts.
•Observe the weight specifications (see rating plate) and the permissible carrying
loads of the means of transport.
•Only handle with suitable hoisting gear.
•RH..C construction without motor: Fit a sling with sufficient carrying load around a
blade. Observe the weight specified on the rating plate (rear of impeller base plate).
Use only a sling suitable for carrying sharp-edged loads.
•ER..CdesignER.., GR..: Fan unit may only be lifted and transported using a suitable
hoisting device (load spreader). Ensure there is sufficient cable or chain length.
•Position the lifting beam transversely to the motor axis. Ensure that the lifting beam
has a sufficient width. The chain or cable may not touch the fan wheel when lifting.
•Never stand underneath the suspended fan because defective transport equipment
could cause death.
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•Store the fan / motor in the original packaging in a dry area protected from the weather
and protect it from dirt and weather until final installation.
•Avoid prolonged storage; we recommend a maximum of one year (consult the
manufacturer before starting if stored for longer).
•Inspect the bearing for proper operation prior to installation.
–Recommendation: Turn the impeller evenly by hand to avoid jamming and damag-
ing the bearing.
•The fan may not be exposed to vibrations or impacts during standstill to avoid roller
bearing damages.
•Observe the motor operating instructions supplied.
3.4 Disposal / recycling
Disposal must be carried out professionally and in an environmentally friendly way in
accordance with the respective national legal stipulations.
"Separate the materials by type and in an environmentally friendly way.
"If necessary, commission a specialist company with the waste disposal.
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4 Mounting
4.1 General notes
Attention!
•Mounting is only to be undertaken by trained service personnel. The system
manufacturer or the machine builder and/or the user is responsible that the inherent
installation and security information are harmonized with the valid standard and
guidelines (EN ISO12100 / 13857).
•Check the fan for damage, e.g. cracks, dents or damage to the electric cables, before
assembly. Start-up is not allowed in the case of transport damage!
•Wear safety clothing / shoes and cut-resistant safety gloves when handling.
•At a weight greater than 25 kg for men / 10 kg for women, the fan should be lifted out
by two persons (according to REFA). The values may differ from country to country.
•Lift the fan out of the packaging with a lifting gear (lifting beam). Attachment points are
solely the holes on the housing flange, motor bed, support plate, motor suspensions,
fastening brackets and any crane eyes of the fan (depending on the design of the fan).
•The chain/rope may not touch the impeller and the possibly mounted frequency
inverter when lifting with the lifting beam, otherwise damage is possible.
•The custom designs must suit the prevailing conditions.
•Take into account easy access for cleaning and maintaining the fan.
•Before installing the fan, make sure the safety distances are maintained compliant
with EN ISO 13857 or in household equipment according to EN 60335.
–If the mounting height (danger area) above the reference plane is greater than or
equal to 2700 mm and is not reduced by auxiliary means such as chairs, ladders,
working platforms or floor space on vehicles, a guard grille is not necessary on the
fan.
–If the fan is located in danger zone, then the manufacturer or operator shall ensure
that hazards shall be prevented by appropriare protective constuctions which meet
the requirements to EN ISO 13857.
•Protective measures must be taken against falling parts when mounting with a
hanging rotor.
•Tighten the fastenings with the specified torques.
•Drilling chips, screws and other foreign bodies must not be located inside the device!
Before the first switch-on, remove any items that may be present (drilling chips,
screws and other foreign objects) from the intake area - risk of injury from any objects
that may fly out!
•For fans, the alignment must be adhered to during operation, e.g. if this is indicated by
“Oben/Top”.
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4.2 Erecting the equipment design ER, GR
Use screws, for example, of strength class 8.8 according to DIN EN ISO 4014 to fasten
the fan.
"Secure the screws with a suitable screw lock.
"Tighten the fastenings with the specified torques (see table).
"After an operating time of approx. 1 hr. re-check the torque of the screwed connection
with the necessary MA.
Permissible tightening torques M
A
Thread size M6 M8 M10
Property class 8.8, friction coefcient µges 0.12 9.5 Nm 23 Nm 40 Nm
Ensure that the clearance (gap) “a” see fig. be-
tween the fan impeller and the stationary
housing section is constant. Distortion due to un-
even surface may lead to fan failure.
Information
•Every screwing case is different. If the strength class of the screws differs from
strength class 8.8, you must determine the adapted tightening torque by appropriate
screw tests.
•Structure-borne noise decoupling of the complete centrifugal fan is recommended to
avoid transmission of disturbing vibrations. (Spring or damping elements are not
usually parts of the standard scope of supply). The assignment of the spacing
dimensions of the damping elements can be taken from the catalogues on our home
page under www.ziehl-abegg.de in the section Download - Ventilation and Control
Engineering.
•Erect in the open air only if this is expressly mentioned and confirmed in the ordering
information. There is a risk of damage to the bearings if the fan remains stopped in a
moist environment. Avoid corrosion by suitable protective measures. Roofing is
required.
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Attention!
•ER.. plug fans may only be operated in installation position H (fan upright, motor shaft
horizontal).
•Connect all contact points securely to the foundation or plant. If not fastened
sufficiently, there is a risk of the fan tipping over or coming loose - danger of injury!
•The screwed connection that connects the impeller to the hub may never be loosened
for any work on the fan! The impeller and hub form a commonly balanced assembly
which may only be disassembled and installed as a complete unit. Merely loosening
this screwed connection can lead to imbalance and therefore to vibrations even if the
screws are connected again correctly before recommissioning!
•Blocking or braking the fan by, say, pushing objects into it is forbidden. This leads to
heated surfaces and damage to the impeller.
•Making your own alterations/conversions on the fan module is unacceptable - safety
risk!
•Please note the following for all types of centrifugal fans:
–Avoid structural damage or stress with installation. Make sure the surface is flat
and even.
–Add-on parts (depending on the design: flanges, fastening brackets, frames, rails,
support plates, etc.) must lie flat on the contact surfaces.
–Do not use force, do not lever, do not bend.
–Do not bend fan roller or fan wheel and blades - imbalance!
–Important: Deformations and misalignments must not result in the striking or
grinding of rotating parts!
ER: When fitting a flexible connection fitting, make sure that it is not fitted completely
tensioned when the fan is idle. GR: GR installation position depends on the design
ordered (H horizontal, Vu vertical with intake from below, Vo vertical with intake
from above).
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4.3 Mounting RH
Attention!
Whenever working on a fan, under no circumstances loosen the bolts that hold the
impeller to the hub! Impeller and hub together form a balanced module which may only
be removed and fitted as a complete unit. Loosening these bolts can lead to imbalance
and therefore to vibrations, even if the bolts are tightened correctly before restarting the
fan!
Impellers with fixed hub:
•The impeller is connected to the shaft end of the drive motor using a fixed hub.
•Installation: Lightly lubricate all bare surfaces (shaft ends, hub holes). Pull the impeller
with the hub (1) up to the shaft shoulder (2) (transitional fit). Secure with the hoisting
device with corresponding weight. Secure the axial shaft-locking device using the
screw (3) and washer (4) with Loctite. Maintain torques in accordance with table.
•Disassembly: Release the axial screw connection and pull off the impeller with the
hub using a suitable pulling unit (secure with hoisting device at the corresponding
weight).
Tightening torques for screw connections with shaft screws combined
with washers with associated nuts (μges. 0.12) in Nm:
Property class M4 M5 M6 M8 M10 M12 M16 M20
8.8 (Steel) 2.8 5.5 9.5 23 45 79 195 390
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Impellers with clamping bush hub:
•The impeller is fitted to the end of the motor shaft using bushings.
•Mounting: Clean and grease all bare surfaces (fitting surfaces of clamping sleeves
and motor shaft). Insert clamping sleeve (1) into the hub (2) and line up the holes as
shown in the fig. (pg. 3). Lightly oil and screw in the set screws (3) - do not tighten yet.
•Push the impeller with clamping sleeve (1) load-free (with lifting gear if the impeller is
heavy) onto the shaft, align in axial position and tighten the set screws (3) evenly,
tighten with torque according to the table. Fill empty bore holes with grease to
prevent penetration by foreign bodies. After an operating time of approx. 1 hour.
Re-check the tightening torqueof the screwed connection with the necessary
torque.
•Removal: Loosen all set-screws (3), depending on the size of the bushing, unscrew
one or two set-screws completely, oil them and screw them into the removal holes (4).
Pull on one or both set-screws, until the bushing (1) comes free of the hub (2). The
impeller can now be taken off.
3 mounting holes, 4 removal holes
*1 1008 1108 1210 1610 1615 2012 2517 3020 3030 3525 3535 4030 4040 4535 4545 5040 5050
*2 5.6 5.6 20 20 20 31 48 90 90 112 112 170 170 192 192 271 271
*3 4.8 4.8 17 17 17 26 41 77 77 95 95 145 145 163 163 230 230
*1 clamping bush
*2 Tightening torque without feather key in Nm
*3 Tightening torque with feather key in Nm
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4.4 Installation and usage information
4.4.1 Optimal installation distances according to for RH../ ER../ GR.. fans
L-KL-1766-1
LD
ØLA
ØDSa
B
A
•Impeller blade external-diameter : Ø DSa
•Distance on suction side: LA ≥ 0.5 x DSa *
•Distance on pressure side: LD for C/Cpro ≥ 1 x DSa, LD for ZAbluefin ≥ 0.8 x DSa
•Housing wall distances: A 1.8 x DSa (A B)
* In the case of disturbance flow (per example curved pipe at the suction side, flaps etc.)
LA ≥ 1 x DSa
4.4.2 Information for montage
The following installation information is based on experience from applications and
measurements on our test benches.
These are general guidelines, as variations may occur in your device due to differences
in its construction.
•The performance depends on the distance to components on the intake “1” and
pressure side“2”.
•Saugseite “1” ≥ 0.5 x DSA.
•Optimum on pressure side “2” ≥ 1.0 x DSA, absolute minimum “2” ≥ 0.7 x DSA
(exception: cooling battery or humidifier after the fan).
L-KL-3480-02
1
2
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•Changes to the flow direction before the fan create significant turbulence in the intake
area.
•Intake side “1” ≥ 1.0 x DSA, with guide blades this can be reduced to “1” 0.7 x DSA,
otherwise there are increased acoustics and power loss.
L-KL-3480-04
2
1
•The position of the opening can be above or below the fan, size “3” ≥ 0.8 x DSA.
•Ideal design if the opening extends over the entire width of the device.
L-KL-3480-08
2
3
L-KL-3480-06
2
3
L-KL-3480-07
2
3
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4.4.3 Possible sources of faults during installation
Please pay attention to possible sources of faults:
•90° change in flow direction and reduction in cross-section “5”.
•Obstructions on the pressure side (long lamp, fluorescent lamp) “2”.
•Failure on the intake side (battery too close) “1”.
•Obstruction on the pressure side (high bottom rails) “4”.
•Constriction at outlet “3”.
L-KL-3480-09
X
X
X
X
3
5
3
4
1
4
2
X
X X
4.5 Assembly in a humid atmosphere
Information
If the device is not in use for longer periods in a humid atmosphere, it is recommended to
operate the motor/fan for at least two hours every month at 80 - 100 % of maximum
speed to remove any moisture that has penetrated inside.
If available, the stationary heaters must be turned on when the motor is not running.
4.6 Connection lead & terminal box
Information
In demanding environments (wet areas, open air installation) all connections must
incorporate water drainage curves. To ensure that water cannot penetrate through to the
controller housing from the connections install a terminal box lower than the motor.
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