HLU RV 20-80, RV 20-100, RV 20-125, RV 20-140, RV 28-200 Operating Manual

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Page 1

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

These operating instructions are valid for the standard and ATEX versions.

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Size 80 up to 140

RV 20

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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Operating manual Centrifugal fans

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.

HF R | RV | MRV

06.2019

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.

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Operating manual

Centrifugal fans

HF R | RV | MRV

1. Content

1.1 Index

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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Page 4

EC-/EU-

Declaration of Conformity

Operating manual Centrifugal fans

HF R | RV | MRV

1.2 EC-/EU-Declaration of Conformity

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

in the delivered version, as a separate component within an installation, complies with the above regulations and the following standards or normative documents:

DIN EN ISO 12100:2011

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

DIN EN 61000-6-2:2011

DIN EN 82079-1:2013 Preparation of instructions - Structuring, content and presentation

VDMA 24167:1994 Fans - Safety requirements

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.

Ernst-Hürner-Straße 35325 Mücke-Atzenhain Germany

Directive / Standard Title

Safety of machinery - General principles for design – Risk assessment and risk reduction

Electromagnetic compatibility, Generic standards - Immunity for industrial environments

Electromagnetic compatibility, Generic standards; Emission standard for industrial environments

HLU Systemtechnik GmbH Sälzerstraße 20a 56235 Ransbach-Baumbach Germany

06.2019

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

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EC-/EU-

Declaration of Conformity

Operating manual

Centrifugal fans

HF R | RV | MRV

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

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:

Directive / Standard Title

DIN EN 1127-1:2011

DIN EN 13237:2013

DIN EN 14986:2017 Design of fans working in potentially explosive atmospheres

DIN EN 15198:2007

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“

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.

Ernst-Hürner-Straße 35325 Mücke-Atzenhain Germany

Explosion prevention and protection - Part 1: Basic concepts and methodology

Terms and denitions for equipment and protective systems intended for

use in potentially explosive atmospheres

Methodology for the risk assessment of non-electrical equipment and components for intended use in potentially explosive atmospheres

HLU Systemtechnik GmbH Sälzerstraße 20a 56235 Ransbach-Baumbach Germany

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06.2019

Page 6

Operating manual Centrifugal fans

2. Construction and correct use for the intended application

2.1 Construction of the fans

Impeller

Sleeve

Housing cover with inlet adapter

HF R | RV | MRV

Housing

Condensate drain

Sleeve

Outlet adapter

Motor

Frame

Vibration absorber

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Fig. 1a| Overview of the fan HF R ...-15 / 17 D | Direct drive

Housing

Impeller

Sleeve

Housing cover with inlet adapter

Condensate drain

Fig. 1b| Overview of the fan HF R ...- 16 / 13 D | Direct drive

Frame

Sleeve

Outlet adapter

Vibration absorber

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Motor

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Operating manual

Centrifugal fans

HF R | RV | MRV

Impeller

Sleeve

Housing cover with inlet adapter

Fig. 1c| Overview of the fan HF R ...-48 R | Belt drive

Housing

Condensate drain

Sleeve

Outlet adapter

Flange bearing

Vibration absorber

Belt drive

drive cover

Motor

Frame

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06.2019

Page 8

Operating manual Centrifugal fans

HF R | RV | MRV

06.2019

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

Fig. 1d| Overview of the fan HF RV / MRV | Direct drive

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Operating manual

Centrifugal fans

HF R | RV | MRV

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

Fig. 1e| Overview of the fan HF RV / MRV | Belt drive

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Page 10

Operating manual Centrifugal fans

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) condensate 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.

HF R | RV | MRV

06.2019

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.

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Operating manual

Centrifugal fans

HF R | RV | MRV

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 necessary 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 manufacturer 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.

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06.2019

Page 12

3. Product specic data

Technical data sheet

Operating manual Centrifugal fans HF R | RV | MRV

The materials/uids for the correct use of the fan in compliance with

the intended application are procured and applied by the manufacturer. 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.

06.2019

Fig. 2a| Overview of the fan HF R | Direct drive

Fig. 2b| Overview of the fan HF R | Belt drive:

Belt ange bearing (RF) and Belt block bearing (RB)

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Operating manual

Centrifugal fans

HF R | RV | MRV

Type ØD

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

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

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

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

max. Amax. Hmax. Xmax.

max. Amax. Hmax.

RFX

max. Amax. Hmax.

RFX

kg.

max.

RFX

max.

RFX

max.

max. kgmax.

RBX

max.

Dimensions and design can be changed | Dimensions in mm

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06.2019

Page 14

Fig. 2c| Overview of the fan RV / MRV | Direct drive

Operating manual Centrifugal fans HF R | RV | MRV

06.2019

Fig. 2d| Overview of the fan RV / MRV | Belt drive

Direct drive Belt drive

max.

Type ØD

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

max. Bmax. Xmax. RBmax. RXmax.

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Page 15

Operating manual

Centrifugal fans

HF R | RV | MRV

Direct drive Belt drive

max.

Type ØD

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

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

max. Bmax. Xmax.

Direct drive Belt drive

max.

max. Bmax. Xmax. RBmax.

max. RBmax. RXmax.

kg.

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.

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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06.2019

Page 16

Operating manual Centrifugal fans

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-connection, 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 increased wear may arise by the torque forces on the impeller.

4. Safety

HF R | RV | MRV

06.2019

4.1 Signs and explanations

The information given in the operating manual is binding

is marked with a „book“.

Warnings

are marked with a „STOP“ sign.

Danger warnings

are marked with a warning triangle.

Notes

are marked with a hand symbol.

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Page 17

4.2 Fan marking

Operating manual

Centrifugal fans

HF R | RV | MRV

Hazards due to electric current

are marked with the symbol shown opposite.

Protective earth connection

is marked by these symbols at the connecting points.

Hazards due to explosive atmosphere

are marked with the symbol shown opposite.

Specications for fans without explosion protection:

Type Order no. (AB) Construction year

Fan-specic data

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.

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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

Fig. 3b| Type label (explosive atmosphere)

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Page 18

Operating manual Centrifugal fans

Meaning of possible device categories on the type label:

II 2G

II 2/3G

II 3G

II 3/-G

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.

The fan is suitable for exhaustion from zone 1 and for installation in zone 1

The fan is suitable for exhaustion from zone 1 and for installation in zone 2

The fan is suitable for exhaustion from zone 2 and for installation in zone 2

The fan is suitable for exhaustion from zone 2 and must be installed outside the hazardous area

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.

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 protection device.

HF R | RV | MRV

Check

Interval Method

y F

06.2019

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.

Electrical connection

The electrical connections are made using a 4-wire supply cable system, 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

Check

Interval Method

y V, F, M

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Page 19

Operating manual

Centrifugal fans

HF R | RV | MRV

Deactivating the safety devices, or changing their operating principle, is strictly prohibited.

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)

4.5 Safety measures (to be implemented by the user)

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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06.2019

Page 20

Operating manual Centrifugal fans

To avoid the occurrence of ignition sources, the operating and maintenance 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.).

5. General warning symbols

5.1 Hazards

Pay attention to the safety devices described in this manual and follow the safety notes.

During setup, maintenance and repair work, mind the squeezing

hazards.

During setup, maintenance and repair work, mind the hazard due to electric current!

HF R | RV | MRV

06.2019

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 presents a hazard of getting burned.

When doing setup, maintenance and repair work within the explosion-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.

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.

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Page 21

Operating manual

Centrifugal fans

HF R | RV | MRV

During maintenance and repair work, the hazardous area extends 1 m

around the fan. The ap pivoting area must be taken into account as

well. Keep the area around the fan free from any objects.

5.3 Installation of spare and wear parts

We point out explicitly that spare parts and accessories not supplied by us are not checked and released for use by us either. Installation and/or use of these products can change the design properties of your fan negatively. The manufacturer cannot be held responsible for damage resulting from the use of other than

original components. In connection with the order conrmation, you will receive a data card and

a spare parts list for the fan. If you need spare parts, please, inform our sales partner:

Hürner Luft- und Umwelttechnik

Ernst-Hürner-Straße 35325 Mücke-Atzenhain Germany

Tel. Fax E-Mail

For Asien: Hürner Funken Malaysia Sdn. Bhd.

Lot 3, Milon Industrial Park

Jalan Minlon Utama o󰀨 Jalan Taming 2

Taming Jaya, 43300 Balakong Selangor DE Malaysia

Tel. Fax

When ordering spare parts, please specify the following data:

J Order no. (see type label) J Fan type J Spare part denomination

+ 49 6401 9180 - 0 + 49 6401 9180 - 142 [email protected] www.hlu.eu

+ 603 8961 9863 + 603 8961 9862 www.huerner-funken.com.my

HLU Systemtechnik

Sälzerstraße 20a 56235 Ransbach-Baumbach Germany

Tel. Fax E-Mail

+ 49 2623 92 95 9 - 0 + 49 2623 92 95 9 - 99 [email protected] www.hlu.eu

www.hlu.eu

06.2019

Page 22

Operating manual Centrifugal fans

6. Installation

6.1 Scope of supplies

The equipment delivered to the user comprises:

J Centrifugal fan J Operating manual J Technical documents

For the detailed scope of equipment supplied, refer to the order conrmation.

6.2 Transport and packing

Although the fans are checked and packed carefully before shipment, damage during transport cannot be excluded.

6.3 Delivery (also with spare and substitute parts)

Inspection of incoming components:

J Check, if the consignment is complete according to the bill of delivery.

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06.2019

In the event of damage

J Check the consignment for damage (visual inspection).

In the event of complaints

If the consignment was damaged during transport:

J Contact the last forwarder immediately. J Keep the packaging (for checking by the forwarder or for returning the product).

Packaging for returning the product

J If possible, use the original packaging and the original packaging material. If the original

packaging and packaging material haven‘t been kept, use commercial packaging material. Fasten the fan to a transport pallet (it must be dimensioned appropriately for the weight).

J With any questions relating to packaging and safe transport, please, consult the manufac-

turer.

6.4 Intermediate storage

The fans should be stored in a room or under a shelter. With outdoor storage, protect the fan from dirt and atmospheric conditions using a canvas cover. Keep the storage temperature between 0 °C and + 40 °C.

To avoid permanent deformation by preventing static load at the contact points between the rolling elements and bearing raceways, the impeller has to be turned for a ¼ turn at regular intervals (at least every 4 weeks).

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Page 23

Operating manual

Centrifugal fans

HF R | RV | MRV

With belt-driven fans, note that the V-belts must be released in case of prolonged storage periods or standstill ( > 4 weeks ), in order to prevent damage of bearings and V-belts.

6.5 Transport to the place of installation (at the customer‘s site)

Transport must be performed only by qualied personnel in compliance with the local conditions and any warning notes on the packaging material.

The fan or fan unit is transported on transport pallets to the site.

The fan or transport unit may tip over during transport. Pay attention to the focus (the focus is centred) and weight (see technical data). Secure the fan or the transport unit with appropriated resources before the transport.

Transport with forklift

J The forklift has to be adjusted according to the weight of the fan or the transport unit. J Drive with the forks of the forklift between or under the arbors of the transport pallet of the

fan or the transport unit.

J Make sure that the forks of the forklift are completely under the arbor (the forks have to look

out at the opposite).

J Lift the fan or transport unit and transport it.

Weight see cap. 3.

Transport of the fan to the site

Fig. 4| Transport of the fan to the site

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The fan has to be transported with appropriated resources at the designated points and it has to be secured against overturning.

Attention: The focus must be on the bottom!

The lifting and transporting of the fans can be done manually depending on the size and the weight.

06.2019

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Operating manual Centrifugal fans

6.6 Installation, mounting, Initial commissioning

Installation, mounting and initial commissioning of the fan are performed by qualied personnel of manufacturer or by qualied customer personnel that must have been trained adequately

for this work.

J The constructional arrangement of the fan must ensure that operational underpressure con-

ditions are present at the shaft passage.

J Check on the basis of the static of the building, if it is adjustable for the burden of the fan

and if the bottom is at.

J The installation of the fans and their components are based on the on-site installation plan. J The fan must be mounted on vibration dampers. The Vibration absorbers used for instal-

lation of the fan must be mounted by means of screws in the marked and readily drilled positions in the foundation frame and fastened with bolts in the on-site foundation.

J We recommend a circumferential distance of approx. 1.5 m to 2 m, for maintenance work at

the fan.

For maintenance work at the inlet side oft the fan, the housing cover should be removed if

necessary. Therefore we advise mounting a removable pipe section of approx. 1 m in front of the fan if the fan cannot be postpone.

J The fan must not be operated in non-installed condition. The impeller must be free to move

without any impediment at all times.

J Mount the (on-site) pipe. J The fan is equipped with a terminal box (or maintenance switch) for connecting to the mains

supply. The motor enclosure must be closed using a sealing joint certied according to

the EN IEC 60079-0 and EN IEC 60079-1 standards. Users will have to connect the cable

terminals using one of the protection types specied in standard EN 60079-0. The energy supply can be cut o󰀨 using an onsite maintenance switch (if it is not already installed at the

fan).

J Check before the rst operation that the turning direction is correct (direction arrow on the

fan housing) and that the max. speed is not exceeded (see nameplate).

J If there is danger of foreign parts falling into the fan or being aspirated, the connected pipe

upstream and downstream of the fan must be provided with a protective grid (min. IP20 to EN 60529).

J The motors are designed for a maximum ambient temperature of 40 °C. Ventilation must not

be impaired. The minimum distance between fan housing and adjacent objects must be ¼

of the diameter of the ared fan housing bezel.

J If the fan shall be installed outdoor, we recommend a protection of the drive motor against

water.

J The inside of the fan and of upstream and downstream channels and units must be keptfree

from foreign bodies.

J After a run-in period of 1 or 2 hours check the drive at regular intervals and re-tighten the

belts, if necessary.

J The condensate drain at the bottommost point of the housing has to be connected. J See point 3.2. J Ensure that connected lines do not carry loads which lead to a distortion of the fan housing.

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06.2019

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Page 25

Operating manual

Centrifugal fans

HF R | RV | MRV

The fan may be connected to the supply voltage and switched on only, when the pipe (on the inlet and outlet side) has been connected completely. Installation must be performed according to the connecting diagram in the motor operating instructions only by adequately trained and qua-

lied personnel.

The following conditions must be met:

J Compliance with the national regulations relating to the public utilities. J The supply voltage at the place of installation and the mains frequency must correspond to

the values specied on the motor type label.

J The power supply cable must be protected against damage and dimensioned adequately

for the power rating.

J Set the thermal overcurrent relay to the nominal current specied on the motor type label

and follow the instructions given in the motor operating instructions. We reserve ourselves the right to cancel the motor warranty in the event of failure to comply with this protective measure.

Make sure that the rotating direction is correct. To check the rotating direction, switch on the motor shortly and compare the impeller rotating direction with the arrow marked on the housing. If the rotating direction is wrong, change the motor polarity in compliance with the safety regulations. After reaching the operating speed, measure the power consumption immediately and compare it to the motor current

specied on the type label.

24 h after initial commissioning: Check the tightness of the housing and the quiet run of the fan and re-tighten the screws.

Caution

The fan pipe connections may be performed only using exible couplings (compensators).

6.7 Operating modes

The fan is switched on and o󰀨 via an on-site operating unit provided by the user, or operated via

an on-site supervisory system. It is designed for continuous operation.

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Page 26

Operating manual Centrifugal fans

7. Operation

The fan may be operated only by specialized personnel qualied and

trained for operation.

8. Maintenance / Cleaning

The chapter on „Maintenance / Cleaning“ is intended only for

qualied personnel. Maintenance, cleaning and repair work may be performed only by qualied personnel.

Qualied person

A person who is able to assess the work he/she is in charge of and aware of potential hazards due to his/her professional training, skills and experience as well as his/her knowledge of the relevant standards.

Denition according to EN 60204-1.

To ensure smooth operation of the fan, cleaning and maintenance of the fan at regular intervals is required. During operation, the fan is subject to vibration susceptible of releasing screwed and clamping connections. To prevent damage, check the fan for loosened connections at regular intervals (recommended interval with single-shift operation: 3 months).

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06.2019

For information on maintenance/cleaning of individual components purchased from other manufacturers (e.g. electric motor), refer to the corresponding manufacturer operating instructions.

When switching o󰀨 the supply voltage because of cleaning, maintenance and repair work, measures to prevent the supply voltage from being switched on accidentally must be taken by the user (locking the main or maintenance switch using a padlock).

During maintenance and repair work, mind all rotating and mobile parts. Risk of entanglement! Tight clothing must be worn in the danger area.

During maintenance and repair work, mind the squeezing hazards.

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Page 27

8.1 Cleaning

Operating manual

Centrifugal fans

HF R | RV | MRV

When doing maintenance and repair work, mind the hazards due to electric current.

Cleaning, maintenance and repair work may be done only at non-explosive atmosphere. For reasons of safety, only tools made of non-sparking material may be used when doing this work.

The work intervals specied below are intended for single-shift operation (8 hours a day; 22 days a month; 12 months a year).

= daily

= weekly

= monthly

½ y

= half-yearly

Don‘t use any sharp objects or tools for cleaning. Only objects that are explicitly provided for this purpose are suitable.

= yearly

= cleaning required when opening

= lifetime

= manufacturer operating manual

(Depending to the degree of contamination the cleaning intervals

Cleaning

must be adapted) Interval

Keep the fan and the area around the fan free from deposits on the outside regu-

larly (e.g. dust, exhaust uids).

Check the impeller regularly for contaminations and cakings and clean it, if necessary.

Caution

Contaminations on the impeller can cause imbalance of the fan. Depending on the intensity, this can even cause the destruction of the fan.

Make sure that the cooling ns of the electric motor are not clogged by pollution in

order to avoid overheating, if necessary clean them.

Caution

When doing cleaning work, wear protective equipment in compliance with the operational regulations for occupational health and safety (e.g. protective gloves).

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½ y

06.2019

Page 28

Operating manual Centrifugal fans

8.2 Lubrication

The lubrication points of the fans have to be greased regularly using appropriated lubrication tools. The lubrication periods depend on the operating hours of the fan (see next schedule).

J The bearings of the installed maintenance-free electric motors have a grease lling, which

is calculated for a service life of approx. 10.000 - 20.000 operating hours. The maintenan-

ce-free ange double bearings (299 T ...W, 399 T ...W), were lled with grease su󰀩ciently

by the manufacturers, this means they have a calculated service life of approx. 20000 operating hours.

J The periods and amount of the lubrication on the electric motor and regreasable double

ange bearings 399T…N and block bearing 32T…ER depend on the operating hours of the

fan. After max. 8000 operating hours at the latest after one year of operation the bearings have to be greased again according to the next schedule.

J We recommend as appropriated bearing grease a lithium soap grease, for example Shell-Al-

vania 2 or 3. The determined lubrication intervals are applicable to bearings in horizontal mounting position at a maximum temperature of 70 °C. As lubricant aging is accelerated at higher temperatures, the lubrication interval must be reduced by half with a temperature increase of 15 °C.

J Concerning the lubrication intervals of electric motors please note the operating and main-

tenance instructions of the engine producer.

Details about the kind, amount and period of lubrication of the single purchase component devices have to be taken from the external manufacturer’s operating manual.

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06.2019

Greasing periods depending on the speed and nominal size of the fan:

HF R ...-15 / 17 D / R

Only the fan type HF R 250-17 R with a speed over 2000 min-1 has got a regreasable bearing installed.

Nominal fan

size

HF R 250-17

Speed fan

2000

2500

min-1

3000

min-1

8000 h 7000 h 5500 h 4500 h

3500

min-1

Quantity

of grea-

sing

8 g

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Page 29

HF R ...-13 D / R

Nominal fan

size

HF R 450-13 RB

HF R 500-13 RB

HF R 560-13 RB

HF R 630-13 RB

HF R 710-13 RB

HF R 800-13 RB

HF R 900-13 RB

HF R 1000-13 RB

HF R 1120-13 RB

HF R 1250-13 RB

Operating manual

Centrifugal fans

HF R | RV | MRV

500

750

min-1

8000 h 8000 h 8000 h 7000 h

8000 h 8000 h 8000 h 8000 h

8000 h 8000 h 8000 h 7500 h

8000 h 8000 h 8000 h

Speed fan

1000

1500

2000

min-1

8000 h 8000 h 8000 h 6000 h 5000 h

8000 h 8000 h 8000 h 6000 h

8000 h 8000 h 7000 h 5000 h

8000 h 8000 h 7000 h

min-1

2500

min-1

3000

min-1

Quantity

of grea-

sing

10 g

15 g

20 g

26 g

33 g

42 g

Nominal fan

size

HF R 450-13 RF

HF R 500-13 RF

HF R 560-13 RF

HF R 630-13 RF

HF R 710-13 RF

HF R 800-13 RF

HF R 900-13 RF

HF R 1000-13 RF

HF R ...-16 R

Nominal fan

size

HF R 160-16 R

HF R 200-16 R

HF R 250-16 R

HF R 315-16 R

HF R 355-16 R

HF R 400-16 R

750

min-1

2500

min-1

Speed fan

1000

1500

min-1

3000

3500

min-1

2000

min-1

4000

min-1

500

min-1

13000 h 10000 h 2000 h 1500 h

13000 h 10000 h 7000 h 5000 h

4000 h 2200 h 1500 h 1000 h

4000 h 2200 h 7000 h 5000 h

3800 h 2200 h 7000 h 4500 h

17500 h 14000 h 10000 h 8000 h

16000 h 13000 h 10000 h 8000 h

2000

min-1

8000 h 8000 h 7000 h 6000 h 4800 h 4000 h 3500 h 3000 h 2750 h 2350 h 2000 h

8000 h 8000 h 7000 h 6000 h 4800 h 4000 h 3500 h 3000 h 2750 h

8000 h 7000 h 5500 h 4500 h 3200 h 2700 h 2000 h

7000 h 5000 h 4000 h 3000 h

2500

min-1

Speed fan

4500

min-1

Quantity

of grea-

sing

10 g

13 g

21 g

5000

min-1

5500

min-1

6000

min-1

6500

min-1

7000

min-1

Quantity

of grea-

sing

5 g

7 g

9 g

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06.2019

Page 30

HF R ...-48 R

Nominal fan

size

HF R 48-50

HF R 48-63

HF R 48-80

HF R 48-100

HF R 48-125

HF R 48-160

HF R 48-200

RV 20-... R | up to size 355

Nominal fan

size

RV 20-80 R

RV 20-100 R

RV 20-125 R

RV 20-140 R

RV 28-... R | up to size 355

Nominal fan

size

RV 28-200 R

RV 28-225 R

RV 28-250 R

RV 28-280 R

RV 28-315 R

Operating manual Centrifugal fans HF R | RV | MRV

2000

2500

3000

3500

4000

min-1

8000 h 8000 h 7000 h 6000 h 4800 h 4000 h 3500 h 3000 h 2750 h 2350 h 2000 h

8000 h 8000 h 7000 h 6000 h 4800 h 4000 h 3500 h 3000 h 2750 h

8000 h 7000 h 5500 h 4500 h 3200 h 2700 h 2000 h

7000 h 5000 h 4000 h 3000 h

7000 h 5000 h 4000 h

6500 h 4500 h 3000 h

6500 h

1000

1500

min-1

2000

min-1

8000 h 8000 h 8000 h 7500 h 6000 h 5000 h 4000 h 3500 h

8000 h 8000 h 8000 h 6500 h 5000 h 4000 h 3000 h 2500 h

2500

min-1

Speed fan

min-1

3000

min-1

4500

min-1

3500

min-1

Speed fan

1500

2000

2500

3000

3500

Speed fan

min-1

8000 h 8000 h 8000 h 8000 h 7000 h 6000 h 5000 h 4500 h

min-1

4000

min-1

5000

min-1

4000

min-1

4500

min-1

5500

min-1

4500

min-1

5000

min-1

6000

min-1

5000

min-1

Quantity

of grea-

sing

9 g

6500

min-1

Quantity

of grea-

sing

6 g

9 g

7000

min-1

Quantity

of grea-

sing

5 g

7 g

9 g

12 g

06.2019

RV / MRV 45/63-... R | up to size 355

Nominal fan

size

RV / MRV

45/63-160 R

RV / MRV

45/63-200 R

RV / MRV

45/63-250 R

RV / MRV

45/63-315 R

RV / MRV

45/63-355 R

1000

1500

min-1

2000

min-1

8000 h 8000 h 8000 h 8000 h 8000 h 8000 h 7000 h 6500 h

8000 h 8000 h 8000 h 8000 h 8000 h 7000 h 6000 h

2500

min-1

Speed fan

3000

min-1

3500

min-1

4000

min-1

4500

min-1

5000

min-1

Quantity

of grea-

sing

6 g

9 g

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Page 31

Operating manual

RV 28-... R | up to size 355

Nominal fan

size

RV 28-355 R

RV 28-400 R

RV 28-450 R

RV 28-500 R

RV 28-560 R

RV 28-630 R

RV 28-710 R

RV 28-800 R

RV 45/63-... R | up to size 355

Nominal fan

size

RV 45/63-400 R

RV 45/63-450 R

RV 45/63-500 R

RV 45/63-560 R

RV 45/63-630 R

RV 45/63-710 R

RV 45/63-800 R

RV 45/63-900 R

RV 45/63-1000 R

RV 45/63-1120 R

RV 45/63-1250 R

1000

1500

min-1

7000 h 5000 h 3500 h 2000 h 1250 h 900 h

6500 h 4500 h 3500 h 1800 h 1100 h

6000 h 4000 h 3000 h 1500 h 1000 h

5500 h 3500 h 2500 h 1250 h

500

750

min-1

6500 h 4500 h 3200 h 1750 h 1100 h

6000 h 4000 h 3000 h 1500 h

5500 h 3500 h 2500 h 1250 h

Centrifugal fans

HF R | RV | MRV

Fan speed

2000

2500

3000

3500

4000

min-1

3500 h 2000 h 1500 h 1000 h 800 h 700 h

3500 h 2000 h 1250 h 900 h

Fan speed

1000

1500

min-1

maintenance-free

2000

min-1

3500 h 2000 h 1500 h 1000 h 800 h 700 h

3250 h 1800 h 1250 h 900 h

min-1

2500

min-1

4500

min-1

3000

min-1

Quantity

of grea-

sing

10 g

11 g

16 g

19 g

21 g

3500

min-1

Quantity

of grea-

sing

10 g

11 g

16 g

19 g

24 g

8.3 Tensioning of V-belts

Pretension of V-belts

Deect a belt (the central belt with multiple-groove pulleys) at right angles to the free belt side by means of a spring balance. Measure the deexion using a centimetre ruler. A required deexion (Ea) of 17 mm per 1000 mm of free belt side length was determined. The required deexion is calculated by means of the following simplied equation:

(e = Centre distance)

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Page 32

Operating manual Centrifugal fans

Before work starting, note that:

J Secure the fan against accidental start-up. J Remove the belt cover. J Measure the spring travel f = Ea at test force F using a traction balance J Increase or reduce the motor-to-bearing centre distance by adjusting the mounting screws

until reaching the set-point. For this, release the locknut at the upper and lower setscrew. Shaft and belt pulleys must be exactly aligned, maximum deviation is 1°.

The values for test force depend on the prole and diameter of the little belt pulley (see next

schedule).

Disc Test load Disc Test load Disc Test load Disc Test load

SPA95 23 SPB150 42 SPC224 85 SPZ63 12 SPA100 25 SPB160 45 SPC236 88 SPZ67 13 SPA106 27 SPB170 48 SPC250 92 SPZ71 14 SPA112 29 SPB180 51 SPC265 96 SPZ75 15 SPA118 31 SPB190 54 SPC280 100 SPZ80 16 SPA125 33 SPB200 58 SPC300 106 SPZ85 17 SPA132 35 SPB212 61 SPC315 110 SPZ90 19 SPA140 36 SPB224 64 SPC335 115 SPZ95 20 SPA150 38 SPB236 66 SPC355 120 SPZ100 21 SPA160 39 SPB250 69 SPC375 123 SPZ112 22 SPA180 42 SPB280 77 SPC400 126 SPZ125 24 SPA180 45 SPB315 85 SPC425 130 SPZ140 25

HF R | RV | MRV

SPC450 134 SPC475 138 SPC500 141 SPC530 146 SPC560 150

06.2019

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Page 33

Operating manual

Centrifugal fans

HF R | RV | MRV

e Centre distance ß Angle of belt contact D Diameter of big pulley d Diameter of little pulley F Test force in N L Free belt length

Ea Required deexion in mm

Retension of V-belt

Loosen both screws on the motor ange

(A bearing). Then pull the motor at the terminal box at a 45 ° angle downwards [F] so that the belt is tensioned. Tighten the screws slightly, then pull the motor downwards at an angle so that the belt tension rises

again. While the tension is maintained, rst tighten

the screw with the clamping angle (1), then tighten

the screw directly at the ange (2).

Then check the belt tension again and if necessary repeat the process until the required tension is

reached (if su󰀩cient force can not be applied, use

torque-increasing measures [leverage]).

Designation

(2)

(1)

[F]

8.4 Inspection interval / Function checking

Interval with single-shift operation

d w m ½ y 1 y MO

Superordinate facility for connecting the supply voltage

Settings of the on-site protective devices x Fan motor function checking x Bearing function checking x Check belt tension and correct if necessary x Check the impeller for damage x

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06.2019

Page 34

Operating manual Centrifugal fans

8.5 Vibrations

International standards for the balancing quality and vibration values for industrial fans are dened in the standard ISO 14694:2003. The vibrations are measured radially on the shaft bearing of the drive motor. If a measurement is not possible directly on the motor, it is measured radially at the next point that has a mechanical connection to the motor. The following table shows the fan application categories for maximum permissible vibration.

HF R | RV | MRV

Vibration values according to ISO 14694

Stan-

dard

group

ISO

14694

BV-2 >0.15<3.7 G16 3.5 (5.1) 5.6 (7.6)

BV-3 >=3.7<37 G6.3 2.8 (3.8) 3.5 (5.1)

BV-4 >=37<300 G2.5 1.8 (2.5) 2.8 (3.8)

Motor

power

[kW]

Min.

balan-

cing

quality

At manufacturer

Average values;

maximum values

in brackets

Fixed

mounted

[mm/s]

Flexibly

mounted

[mm/s]

Limit values

In operation

Average values;

maximum values

in brackets

Fixed mounted

[mm/s]

Start-up 5.6 (7.6) Alarm 9.0 (12.2) Slow-down 10 (14)

Start-up 4.5 (6.4) Alarm 7.1 (10.2) Slow-down 9.0 (12.7)

Start-up 2.8 (4.1) Alarm 4.5 (6.4) Slow-down 7.1 (10.2)

Flexibly mounted

[mm/s]

Start-up 9.0 (12.7) Alarm 14.0 (19.1) Slow-down 16 (21)

Start-up 6.3 (8.8) Alarm 11.8 (16.5) Slow-down 12.5 (17.8)

Start-up 4.5 (6.4) Alarm 7.1 (10.2) Slow-down 11.2 (15.2)

8.6 Tightening torques for bolt connections

On the basis of VDI 2230 the following tightening torques are recommended for bolts of strength class 8.8:

Nominal

diameter [mm]

M4 3,3 M5 6,5 M6 11,3 M8 27,3

M10 54

Tightening

torques [Nm]

Nominal

diameter [mm]

M12 93 M16 230 M20 464 M24 798

Tightening

torques [Nm]

06.2019

www.hlu.eu

Page 35

Operating manual

Centrifugal fans

HF R | RV | MRV

8.7 General hints for maintenance

Correct maintenance is decisive for the fan safety of operation and lifetime.

Operational disorders due to insu󰀩cient or improper maintenance can cause high repair costs

and long downtimes. For this reason, regular maintenance is indispensable.

Before starting maintenance and repair work (especially when the

fan must be opened), compliance with the switch-o󰀨 procedures is

essential.

The inspection intervals must be shortened at strong degree of pollution, high ambient temperatures and frequent start / many load changes. Interval

Check, if the fan is installed correctly and safely and pay attention to possible vibrations during operation. If necessary, re-tighten the screw connections.

Check the connections of the pipe on the inlet and outlet side, housing cover and shaft seal (if installed) for tightness.

Check the electric motor for correct and rm seating and functionality. MO

Check V-belts ½ y Check the housing for stress cracks, quiet run and storage temperature. Check

the impeller for deformations, wear and cakings. Do all greasing work at the bearings of the fan rotational. Keep attention to the

lubricating intervals of the engine manufacturer.

Checks

8.8 Checks

After completing work, please, check:

J The completeness of performed work, J Unless there is reason to complain, the fan can be taken into operation

After checking and replacing the wear parts, please check, if all safety devices are fully operable.

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Page 36

9. Troubles, causes and measures

The facts and information relating to „Troubles, cause and measures“ described in this operating manual are formulated in a way that they

are understood by persons with a professional training in the elds of

J electrics / electronics J mechanics / maintenance.

Appropriate tools and test equipment must be made available to this personnel. Before any maintenance and repair work, the fan must be de-energized and protected against re-activation. Unless the speci-

ed measures are successful, please, contact the manufacturer.

Trouble Possible cause Remedial action

Temperature rise at the bearings

Leakage at the shaft passage

Unquiet run of fan (heavy vibration)

Motor bearing noise

Fan power output too low

Motor power consumption to high

Motor is

switched o󰀨

by the motor protection switch

Increased exing work at bearing by

fresh lubrication or new bearing

Lubrication intervals were not observed

V-belt tension too high Correct V-belt tension

Sealing element worn out Change sealing element

Foundation is subject to heavy vibration

Impeller unbalance

Deposits on the impeller Clean the impeller Damage on impeller Consult manufacturer

Motor bearing damaged

Wrong impeller rotating direction Reverse the rotating direction Output reduction facilities are not opened, or opened only partly Pipe resistances on inlet or outlet side too high

Defective motor winding

Wrong impeller rotating direction Reverse the rotating direction Motor protective switch is not adjusted correctly Motor protective switch is not adjusted correctly

Motor winding defective

Impeller blocked Check impeller

Operating manual Centrifugal fans HF R | RV | MRV

Fan continue to operate, Temperature normalizes after a certain period by itself Change bearing and correct the lubrication according to the intervals

Damp the foundation / fan

Balancing required, consult manufacturer

Replace bearing or motor, Consult manufacturer or motor supplier

Check the output power reduction facilities Reduce resistances, increase the fan power, consult manufacturer Change motor, consult manufacturer or motor supplier

Adjust motor protective switch correctly

Change motor, consult manufacturer or motor supplier

06.2019

www.hlu.eu

Page 37

Operating manual

Centrifugal fans

HF R | RV | MRV

Trouble Possible cause Remedial action

Belt broken or damaged

V-belts slip through

Sliding noises

Sudden power decrease

10. Emergency

In case of emergency, switch o󰀨 the main switch or withdraw the power supply connector.

Normal abrasion Find reason, change V-belts V-belt tension too high Reduce V-belt pre-tension V-belt does not align Check alignment

Wrong pre-tension

Backlash due to decreasing V-belt pre-tension Motor winding defective Consult manufacturer

Impeller unbalance

Foreign body between impeller and housing Inlet or outlet pipe untight Check the pipes Connecting collar defective Replace the collar

Check belt tension and correct if necessary

Check and re-adjust the V-belt

Balancing required, consult manufacturer

Remove the foreign body

11. Dismantling / Disposal

Dismounting

Dismounting may be done only by qualied personnel. Before starting dismounting work, make sure that the switch-o󰀨 proce-

dures are followed.

Disposal

The fan is made mainly of steel and plastics (except the electrical equipment) and must be discarded in compliance with the applicable local environmental regulations.

For discarding the cleaning agents, follow the local regulations and the information given in the manufacturer safety data sheets. Contaminated cleaning tools (brushes, clothes, etc.) must be discarded

in compliance with the manufacturer specications as well.

Depending on the fan application, the housing and the impeller must be considered as special waste and discarded accordingly. Injection moulded or sintered housings are provided with recycling signs indicating which type of plastic material was used.

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06.2019

Page 38