HLU HF R 48 R Series User manual

These operating instructions are valid for the standard and ATEX versions.
Operating manual
Centrifugal fans
HF R ...-15 / 17 D / R
Size 125 up to 500
HF R ...-13 D / R
Size 450 up to 1250
HF R ...-16 R
Size 160 up to 400
HF R ...-48 R
Size 50 up to 200
RV 20
Size 80 up to 140
RV 28
Size 200 up to 800
RV 45/63
Size 160 up to 1250
MRV 45/63
Size 160 up to 355
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These operating instruction are part of the fan and must be available
to the operating personnel at all times. The safety information given
in these instructions must be followed. In the event of a fan resale,
these operating instructions must be included with the equipment
supplied.
Translation
In the event of supply or subsequent sale into the countries
of the EEA, the operating instructions must be translated into
the language of the user country accordingly.
If the translated text contains divergences, always refer to
the wording of the original (German) operating instructions,
or contact the manufacturer.
Operating manual
Centrifugal fans
HF R | RV | MRV
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1.1 Index
1. Content
Operating manual
Centrifugal fans
HF R | RV | MRV
1. Content 3
1.1 Index 3
1.2 EC-/EU-Declarations of conformity 4
2. Construction and correct use for the intended application 6
2.1 Construction of the fan 6
2.2 Correct use for the intended application and eld of application 10
3. Product specic data 12
3.1 General data 15
3.2 Power supply (see motor type label) 16
4. Safety 16
4.1 Signs and explanations 16
4.2 Fan marking 17
4.3 Built-in safety systems (to be implemented by the user) 18
4.4 Interfaces of the fan 19
4.5 Safety measures (to be implemented by the user) 19
4.6 User‘s responsibilities 19
5. General warning symbols 20
5.1 Hazards 20
5.2 Operating and hazardous areas on the fan 20
5.3 Installation of spare and wear parts 21
6. Installation 22
6.1 Scope of supplies 22
6.2 Transport and packing 22
6.3 Delivery (also with spare and substitute parts) 22
6.4 Intermediate storage 22
6.5 Transport to the place of installation (at the customer‘s site) 23
6.6 Installation, mounting, Initial commissioning 24
6.7 Operating modes 25
7. Operation 25
8. Maintenance / Cleaning 26
8.1 Cleaning 27
8.2 Lubrication 28
8.3 Tensioning of V-belts 31
8.4 Inspection interval / Function checking 33
8.5 Vibrations 34
8.6 Tightening torques for bolt connections 34
8.7 General hints for maintenance 35
8.8 Checks 35
9. Troubles, causes and measures 36
10. Emergency 37
11. Dismantling / Disposal 37

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1.2 EC-/EU-Declaration of Conformity
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EC-/EU-
Declaration of Conformity
Page 1of 2Konformitätserklärung
Name and address of the persons, who are authorized, to assort the technical documents:
J Anne-Christin Vögl-Schmitt, Hürner Luft- und Umwelttechnik GmbH, Ernst-Hürner-Straße,
35325 Mücke-Atzenhain, Germany
J Marcel Pfeifer, HLU Systemtechnik GmbH, Sälzerstraße 20a, 56235 Ransbach-Baumbach, Germany
precluding responsibility for components provided or mounted by the customer. It the fan is modied without prior
agreement with HLU, this declaration is void.
Directive / Standard Title
DIN EN ISO 12100:2011 Safety of machinery - General principles for design – Risk assessment and
risk reduction
Reference to the following standards is made additionally in the DIN EN ISO 12100:
DIN EN ISO 13857:2008, DIN EN 349:2009, DIN EN ISO 14120:2016, DIN EN ISO 13732-1:2008,
DIN EN 60204-1:2014
DIN ISO 21940-11:2017 Procedures and tolerances for rotors with rigid behaviour
DIN EN 61000-6-4:2011 Electromagnetic compatibility, Generic standards - Immunity for industrial en-
vironments
DIN EN 61000-6-2:2011 Electromagnetic compatibility, Generic standards; Emission standard for indus-
trial environments
DIN EN 82079-1:2013 Preparation of instructions - Structuring, content and presentation
VDMA 24167:1994 Fans - Safety requirements
For the purpose of
J EC Machine Directive 2006/42/EC, Annex II A for Machines
J EC Low Voltage Directive 2014/35/EU, Annex III
J EMC Directive 2014/30/EU, Annex I and II
We hereby declare that the construction type of the supplied version of:
HF R …, HF D …, HF A …, AX 58 …, RV …, MRV …, SDR …
Manufacturer: Hürner Luft- und Umwelttechnik GmbH
Ernst-Hürner-Straße
35325 Mücke-Atzenhain
Germany
HLU Systemtechnik GmbH
Sälzerstraße 20a
56235 Ransbach-Baumbach
Germany
in the delivered version, as a separate component within an installation, complies with the above regulations and
the following standards or normative documents:
Operating manual
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HF R | RV | MRV
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5
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www.hlu.eu
EC-/EU-
Declaration of Conformity
Page 2of 2Konformitätserklärung
Name and address of the persons, who are authorized, to assort the technical documents:
J Anne-Christin Vögl-Schmitt, Hürner Luft- und Umwelttechnik GmbH, Ernst-Hürner-Straße,
35325 Mücke-Atzenhain, Germany
J Marcel Pfeifer, HLU Systemtechnik GmbH, Sälzerstraße 20a, 56235 Ransbach-Baumbach, Germany
precluding responsibility for components provided or mounted by the customer. It the fan is modied without prior
agreement with HLU, this declaration is void.
Directive / Standard Title
DIN EN 1127-1:2011 Explosion prevention and protection - Part 1: Basic concepts and
methodology
DIN EN 13237:2013 Terms and denitions for equipment and protective systems intended for
use in potentially explosive atmospheres
DIN EN 14986:2017 Design of fans working in potentially explosive atmospheres
DIN EN 15198:2007 Methodology for the risk assessment of non-electrical equipment and compo-
nents for intended use in potentially explosive atmospheres
DIN EN ISO 80079-36:2016 Part 36: Basic method and requirements
DIN EN ISO 80079-37:2016 Part 37: Protection by constructional safety „c“
For the purpose of
J EC Directive 2014/34/EU (ATEX) concerning equipment and protective systems
intended for use in potentially explosive atmospheres
We hereby declare that the construction type of the supplied version of:
HF R …, HF D …, HF A … PTB 03 ATEX D089
RV …, MRV … PTB 04 ATEX D097
SDR … PTB 04 ATEX D098
AX 58 … PTB 04 ATEX D099
Manufacturer: Hürner Luft- und Umwelttechnik GmbH
Ernst-Hürner-Straße
35325 Mücke-Atzenhain
Germany
HLU Systemtechnik GmbH
Sälzerstraße 20a
56235 Ransbach-Baumbach
Germany
conrm in exclusive responsibility to produce solely in combination with the ATEX-name plate and the
individual test report 2.2 according DIN EN 10204:2004 in the delivered version, as a separate component
within an installation, complies with the standards / regulations of the general declaration of conformity, the
above regulations and the following standards or normative documents:
Operating manual
Centrifugal fans
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2.1 Construction of the fans
2. Construction and correct use for the intended application
Operating manual
Centrifugal fans
HF R | RV | MRV
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Fig. 1a| Overview of the fan HF R ...-15 / 17 D | Direct drive
Motor
Impeller
Housing
Housing cover with
inlet adapter
Frame
Condensate drain
Outlet adapter
Vibration absorber
Fig. 1b| Overview of the fan HF R ...- 16 / 13 D | Direct drive
Impeller
Housing cover with
inlet adapter
Outlet adapter Motor
Frame
Vibration absorber
Condensate drain
Housing
Sleeve
Sleeve
Sleeve
Sleeve

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Operating manual
Centrifugal fans
HF R | RV | MRV
Fig. 1c| Overview of the fan HF R ...-48 R | Belt drive
Motor
Housing
Impeller
Housing cover with
inlet adapter
Frame
Outlet adapter
Vibration absorber
Sleeve
Sleeve Flange bearing
Condensate drain
Belt drive
drive cover

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Centrifugal fans
HF R | RV | MRV
www.hlu.eu
Fig. 1d| Overview of the fan HF RV / MRV | Direct drive
Designation Designation
1 Frame 5 Housing
2 Vibration dampers 6 Support
3 Motor 7 Housing cover with inlet adapter
4 Motor cover (opt.) 8 Impeller

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Operating manual
Centrifugal fans
HF R | RV | MRV
Fig. 1e| Overview of the fan HF RV / MRV | Belt drive
Designation Designation
1 Frame 9 Belt pulley, Motor
2 Motor-clamp 10 V-Belt
3 Support 11 Shaft cover
4 Vibration dampers 12 Driver cover
5 Motor 13 Housing
6 Bearing 14 Housing cover with inlet adapter
7 Shaft 15 Impeller
8 Belt pulley, Fan

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2.2 Correct use for the intended application and eld of application
The fans are suitable for exhausting aggressive, dust-free, low-aerosol gases and clean air.
Explosive atmosphere can be exhausted only using fans designed specially for this application.
The permissible gas temperatures for the most frequently used plastics materials are generally
with PVC: 0 °C bis 50 °C,
with PE, PE-FR (PEs) -20 °C to 60 °C,
with PP, PP-FR (PPs): 0 °C to 70 °C,
and with PVDF: -10 °C to 100 °C.
These temperatures must not be exceeded.
Depending on gas composition and impeller speed, these temperature ranges must be check
and restricted, if necessary. With particularly aggressive media, the reductions must be checked
and determined individually in each case. The max. ambient temperature is 40 °C.
Su󰀩cient cooling can be ensured regardless of the volume ow, in accordance with the
above-mentioned conditions.
The fan was developed, designed and built exclusively for industrial and commercial use. Using
the fan for domestic purposes is excluded.
Operating manual
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Centrifugal fans consist of the following main assemblies: Frame, housing, impeller and
drive motor. They are delivered with direct drive (impeller on motor shaft) (except for the type
HF R …-48 R), as well as with belt drive (transmission motor-belt-impeller shaft).
The housings of the series HF R …-15 / 17 D R are sintered with polyethylene (PEs. RAL7036)
as standard. The housings of the other series are manufactured in self-supporting welded cons-
truction with di󰀨erent thermoplastics adapted to the particular conditions of use. They have a
housing cap on the inlet side, which allows the mounting / dismounting of the impeller after
demounting. For the production series RV 45 and RV 63 optionally also moulded casings made
from PVC and PPs are used. These consist of two shells in which the impellers are laid before
welding. Demounting of the impellers is not possible.
The housing is performed with a splinter protection, has on its deepest point (lateral) condensa-
te drain drillings and it can be delivered with revision opening if requested.
The impeller is statically and dynamically balanced (min. quality class G 6.3 acc. to DIN ISO
21940-11). The vibration limits correspond to the ISO 14964 standard. Depending on the speed
and other procedural parameters, various special materials are used as impeller materials in
addition to thermoplastic. Main di󰀨erentiating factor of these series are the di󰀨erent bladings of
the impellers and the housing construction.
On the type label are registered the maximum impeller r.p.m.s. For increasing the impeller
r.p.m., previous consultation of the manufacturer is indispensable.
For fans which are appropriated for the use in Ex-zone 1 the housing and the impeller are made
of electrical conductive thermoplastics. The standard thermoplastic plastic fan is not equipped
with shaft sealing.
The HF R ...- 13 D / R DS2 / DS3 series has a Kera seal as standard grown.
The exhaust uid is aspirated axially by the rotating impeller and transported radially to the
outlet in the helicoidal housing. The applied energy is converted into mass ow and pressure
increase of the exhaust uid in the impeller.

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Installation inside the explosion-hazarded area:
Installation inside the explosion-hazarded area is not permissible,
unless the fan is provided explicitly for this purpose (see type label
Chapter 4.2).
If the fan for an installation with an open inlet or outlet or is provided
for an inlet-side duct connection as part of a larger installation, the
operator is obligated to prevent the penetration of foreign bodies that
can cause ignition according to DIN EN 14 986, point 4.22.
Repair and maintenance works of explosion-proof fans may only be
performed by qualied persons in the explosion protection by
using original spare parts.
If the fan has an open inlet and / or outlet (Type A, B, C according to
ISO 13349), the fan must have the same category inside and outside.
Types of connection
Residual risks
Although the fans have been constructed according to the newest
technology as well as to the security rules and they are monitored by
quality assurance (QA) system, there remains a residual risk due to
the possible rupture of the impeller. This happens especially, when
the conditions of use have not been complied. Therefore it is neces-
sary to pay attention on technically perfect conditions and on the right
case of application. The environment of the fans has to be secured
in such a way, that in case of a damage, neither persons nor objects
get harmed.
These assemblies are intended exclusively for the above purpose.
Using the assemblies for di󰀨erent purposes than described above,
or modifying them without written consent of the manufacturer are
considered as non-compliant with the intended application. The ma-
nufacturer cannot be held responsible for damage resulting from such
use. The risk is borne exclusively by the user. The fan may be started
only after checking that all safety devices are operable and that the
system in which this fan is installed complies with the EU directives.
The correct use for the intended application also implies compliance with the instructions given
in the manufacturer operating manual and with the conditions for maintenance and repair.
The plastic fans are not covered by the „Regulation No 327/2011 of the European Commission
about the implementation of Directive 2009/125/EC (ErP Directive)“ because they are intended
for the extraction of highly corrosive media.
Operating manual
Centrifugal fans
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3. Product specic data
The materials/uids for the correct use of the fan in compliance with
the intended application are procured and applied by the manufactu-
rer. The user is responsible exclusively for correct handling of these
materials/uids and the related hazards. Information on hazards and
disposal must be provided by the user. Follow the rules given in the
manufacturer‘s safety data sheets for materials and uids.
Technical data sheet
Operating manual
Centrifugal fans
HF R | RV | MRV
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Fig. 2b| Overview of the fan HF R | Belt drive:
Belt ange bearing (RF) and Belt block bearing (RB)
Fig. 2a| Overview of the fan HF R | Direct drive

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Dimensions and design can be changed | Dimensions in mm
Operating manual
Centrifugal fans
HF R | RV | MRV
Type ØD
max.
A
max.
H
max.
RFX
max.
kg
HF R 160-16 160 459 750 850 33
HF R 200-16 200 582 730 1020 41
HF R 250-16 250 710 775 1150 58
HF R 315-16 315 893 965 1350 81
HF R 355-16 355 1008 1090 1450 98
HF R 400-16 400 1126 1250 1450 149
Type ØD
max.
A
max.
H
max.
X
max.
kg.
max.
RFX
max.
kg
HF R 125-15/17 125 366,5 435 504 12
HF R 140-15/17 140 409 462 518 13
HF R 160-15/17 160 464 861,5 725 91 880 99
HF R 180-15/17 180 522 558 629 27 760 28
HF R 200-15/17 200 582 945 812 110 1037 166
HF R 250-15/17 250 732 1040 925 129 1080 174
HF R 280-15/17 280 816 804 768 62 923 56
HF R 315-15/17 315 920,5 1290 1179 260 1334 351
HF R 355-15/17 355 1030 1426 1151 214 1412 352
HF R 400-15/17 400 1141 1562 1255 280 1451 402
HF R 450-15/17 450 1297 1625 1320 310 1546 552
HF R 500-15/17 500 1469 1811 1378 506 1575 691
Type ØD
max.
A
max.
H
max.
X
max.
kg.
max.
RFX
max.
kg
max.
RBX
max.
kg
HF R 450-13 450 1200 1250 1550 1950
HF R 500-13 500 1350 1400 1650 2050
HF R 560-13 560 1575 1860 1471 600 1836 650 2110 750
HF R 630-13 630 1770 2065 1635 950 1965 1000 2155 800
HF R 710-13 710 1985 2310 1710 1150 2040 1200 2405 1200
HF R 800-13 800 2235 2470 1889 1350 2249 1450 2700 1500
HF R 900-13 900 2515 2750 2223 1850 2583 1950 2895 2000
HF R 1000-13 1000 2780 3060 2343 2596 2813 2200 3220 2300
HF R 1120-13 1120 2942 3500 2621 3298 3106 2350 3410 3500
HF R 1250-13 1250 3105 3840 2900 4000 3400 4300 3600 4700
Type ØD
max.
A
max.
H
max.
RFX
max.
kg
HF R 50-48 50 372 605 622 85
HF R 63-48 63 455 640 633 100
HF R 80-48 80 566 705 719 150
HF R 100-48 100 703 805 781 200
HF R 125-48 125 860 950 929 300
HF R 160-48 160 1100 1180 1021 400
HF R 200-48 200 1353 1390 1215 550

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Operating manual
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HF R | RV | MRV
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Fig. 2d| Overview of the fan RV / MRV | Belt drive
Fig. 2c| Overview of the fan RV / MRV | Direct drive
Type ØD
max.
A
Direct drive Belt drive
max.
B
max.
X
max.
RB
max.
RX
max.
kg
RV 20-80 80 400 550 500 600 850
RV 20-100 100 500 600 500 650 900
RV 20-125 125 600 750 550 800 1250
RV 20-140 140 700 800 550 800 1300
RV 28-200 200 600 700 600 700 1000 53
RV 28-225 225 650 750 650 700 1050 40
RV 28-250 250 700 800 650 750 1050 46
RV 28-280 280 800 900 950 850 1350
RV 28-315 315 900 950 1000 900 1400 80
RV 28-355 355 1000 1200 1000 1100 1850
RV 28-400 400 1100 1250 1050 1150 1850 180
RV 28-450 450 1250 1500 1250 1350 1950
RV 28-500 500 1400 1550 1300 1400 1950
RV 28-560 560 1550 1600 1400 1700 2150
RV 28-630 630 1700 1800 1550 1750 2250 380
RV 28-710 710 1900 2100 2050 2100 2700
RV 28-800 800 2150 2250 2150 2250 2800

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Dimensions and design can be changed | Dimensions in mm
3.1 General data
Ambient temperature range
The specications on the type label are applicable. If they are missing, the temperature range
is - 20 °C to + 40 °C.
Noise level
For the value applicable to each fan, see the manufacturer internet site, or contact us via phone.
Operating manual
Centrifugal fans
HF R | RV | MRV
Type ØD
max.
A
Direct drive Belt drive
max.
B
max.
X
max.
kg.
max.
RB
max.
RX
max.
kg
RV 45/63-160 160 400 500 500 6 550 950 22
RV 45/63-200 200 500 600 550 9 600 1000 23
RV 45/63-250 250 650 750 680 15 700 1100 32
RV 45/63-315 315 800 900 720 25 850 1300 46
RV 45/63-355 355 900 950 780 30 900 1450 55
RV 45/63-400 400 1000 1100 1100 65 1100 1850 120
RV 45/63-450 450 1100 1150 1150 125 1150 1850 150
RV 45/63-500 500 1200 1350 1300 95 1350 2000 200
RV 45/63-560 560 1350 1400 1350 170 1400 2000 150
RV 45/63-630 630 1500 1700 1500 265 1700 2250 355
RV 45/63-710 710 1700 1750 1650 1750 2350
RV 45/63-800 800 1900 2100 2100 480 2100 2850 560
RV 45/63-900 900 2150 2200 2200 2200 2950
RV 45/63-1000 1000 2400 2650 2300 720 2650 3150 1000
RV 45/63-1120 1120 2700 2750 2450 2750 3300 1040
RV 45/63-1250 1250 3000 3050 2550 3050 3500
Type ØD
max.
A
Direct drive Belt drive
max.
B
max.
X
max.
RB
max.
RX
MRV 45/63-160 160 450 600 550 650 950
MRV 45/63-200 200 550 750 600 750 1000
MRV 45/63-250 250 650 900 700 850 1100
MRV 45/63-315 315 800 1100 1000 1050 1300
MRV 45/63-355 355 850 1150 1050 1100 1450
Others
More relevant data are given on the type label.
The service life of bearing is depending on the load at > 25 000 h.

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3.2 Power supply (see motor type label)
Optionally, the electric motors can be controlled continuously by means of a frequency inverter.
The maximal rotation speed at the impeller (see fan type label) must not be exceeded.
The ICA (instrumentation technology, control technology, automation technology) on site must
give protection against overspeed according DIN EN 60204-1.
In case of operation of several motors with a frequency inverter all-pole sinusoidal lters should
be used between frequency inverter and motor.
If frequency inverters are used in the explosion-hazarded area (Zone 1) these must be installed
outside the explosion-hazarded area and ameproof motors to DIN EN 60079-1 must be used.
Before connecting the fan, check the specications on the type label
and dimension the electrical control system accordingly.
With a motor power ≥ 4 kW for starting up the fan is a star-delta-con-
nection, a soft starter or a FI regulation to use to protect the impeller
and the motor bearing against premature damages.
In the case of direct involvement or frequent restart, damage or in-
creased wear may arise by the torque forces on the impeller.
4.1 Signs and explanations
Danger warnings
are marked with a warning triangle.
Notes
are marked with a hand symbol.
Warnings
are marked with a „STOP“ sign.
The information given in the operating manual is binding
is marked with a „book“.
4. Safety
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Hazards due to explosive atmosphere
are marked with the symbol shown opposite.
Hazards due to electric current
are marked with the symbol shown opposite.
Protective earth connection
is marked by these symbols at the connecting points.
4.2 Fan marking
Fig. 3a| Type label (normal application)
Caution
Fans without explosion protection marking are not permissible for
operation inside the explosion-hazarded atmosphere.
This applies to the environment and the exhausted uid.
Fig. 3b| Type label (explosive atmosphere)
Specications for fans without explosion protection:
Type
Order no. (AB) Construction year
Fan-specic data
Specications for fans with explosion protection:
Type Denomination of explosion
protection type
Ex-Zone Temperature
Motor explosion protection type
Order no. (AB) Construction year
Fan-specic data
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The information given in these operating instructions is only applicable to the fan type specied
on the title page. The type label with the type denomination is located on the base frame or on
the side panel of the fan housing. With all enquiries, make sure to specify the order conrmation
no. and the type label properly to ensure correct and quick handling.
4.3 Built-in safety systems (to be implemented by the user)
The built-in safety devices must be checked at regular intervals:
d = daily, w= weekly, m= monthly, j = yearly.
The following methods must be used for checking:
V= visual check, F= functional check, M = measurement.
Check
Interval Method
y F
Overcurrent protection device
To prevent overheating (re hazard) in the event of overload (e.g. due
to clogging), the fan drive has to be provided with an overcurrent pro-
tection device.
Thermal contact (optional)
For temperature monitoring, the fan is equipped with a thermal
contact. In the event of a temperature increase, the motor switches
o󰀨.
PTC resistor (optional)
Don‘t connect the PTC resistor to the mains voltage. Avoid exceeding
a max. PTC resistor test voltage of 2.5 V.
Protective claddings
All mobile fan components driven by the electric motor as well as all
other hazardous parts of the fan are covered by xed, safely fastened
protective claddings that can be removed only using tools.
Check
Interval Method
y V, F, M
Electrical connection
The electrical connections are made using a 4-wire supply cable sys-
tem, 3 phases and 1 earth conductor with three-phase motors and
using a 3-wire supply cable system, 1 phase, 1 neutral wire and 1
earth conductor with alternating current motors.
Check
Interval Method
y F
Check
Interval Method
y F
Check
Interval Method
m V
Meaning of possible device categories on the type label:
II 2G The fan is suitable for exhaustion from zone 1
and for installation in zone 1
II 2/3G The fan is suitable for exhaustion from zone 1
and for installation in zone 2
II 3G The fan is suitable for exhaustion from zone 2
and for installation in zone 2
II 3/-G The fan is suitable for exhaustion from zone 2
and must be installed outside the hazardous area
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Deactivating the safety devices, or changing their operating principle,
is strictly prohibited.
4.5 Safety measures (to be implemented by the user)
4.4 Interfaces of the fan
The fan has the following interfaces:
J Outlet side (connection via sleeve with tightening strap or ange)
J Terminal box or maintenance switch (electric supply)
J Inlet side (connection via sleeve with tightening strap or ange)
We point out that the user is under the duty to:
J instruct the operating and maintenance personnel on the protective devices of the fan,
J and to ensure supervision concerning compliance with the safety measures.
This operating manual must be kept for future use. The specied frequency of inspection and
control measures must be met.
J The chapters related to transport, installation and mounting, maintenance, troubles/causes/
troubleshooting must be understood by a qualied person. Work described in this chapter
may be performed only by qualied personnel.
4.6 User‘s responsibilities
In the European Economic Area, compliance with Council Directive
(89/391/EEC) and the related individual directives, especially Council
Directive 89/655/EEC Concerning the Minimum Safety and Health
Requirements for the Use of Work Equipment by Workers at Work in
the relevant national version is mandatory.
The user must obtain the local operating licence and follow the relevant rules.
Additionally, the user must ensure compliance with the national legal regulations concerning
J the personnel safety (regulations relating to accident prevention)
J the safety of work equipment (protective equipment and maintenance)
J product recycling (Waste Management Law)
J material disposal (Waste Management Law)
J cleaning (cleaning agents and disposal)
J and comply with the requirements for environment protection.
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5.1 Hazards
Pay attention to the safety devices described in this manual and follow the safety notes.
When doing setup, maintenance and repair work within the ex-
plosion-hazarded area, make sure that there isn‘t a critical gas
concentration. Use a gas detector. Always avoid handling all kinds of
ignition sources inside the explosion-hazarded area. Welding, cutting
and polishing work may be performed only, if the related permission
was granted.
During setup, maintenance and repair work, mind the squeezing
hazards.
During setup, maintenance and repair work, mind the hazard due to
electric current!
During setup, maintenance and repair work, be aware of the risk of
getting burned due to hot components.
In the event of a failure of the forced ventilation, the drive motor pre-
sents a hazard of getting burned.
5. General warning symbols
5.2 Operating and hazardous areas on the fan
Hazardous area
During setup, maintenance and repair work, the overall area around the fan is a hazardous
area.
To avoid the occurrence of ignition sources, the operating and main-
tenance personnel must be equipped properly and receive adequate
instructions for realization of cleaning and maintenance work, e.g.
J to avoid the use of tools giving rise to sparking,
J strict observance of the smoking ban,
J to avoid the actuation of ignition sources (e.g. lighters, etc.).
Operating manual
Centrifugal fans
HF R | RV | MRV
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