FLENDER B H 23 28 Series User manual

FLENDER GEAR UNITS
Belt-conveyor gear unit
Assembly and operating instructions A5033en
Edition 06/2020
B..H 23...28, B..M 23...28, B3.E 13...22

09.12.2020 23:20
V24.01

FLENDER GEAR UNITS
Belt-conveyor gear unit
A5033en
Assembly and operating instructions
B..H 23...28, B..M 23...28, B3.E 13...22
Original assembly and operating instructions
Edition 06/2020
Introduction 1
Safety instructions 2
Description 3
Application planning 4
Assembly 5
Commissioning 6
Operation 7
Servicing 8
Service & Support 9
Disposal 10
Spare parts 11
Declaration of incorporation A
Declaration of conformity B
Technical data C

Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent damage
to property. The notices referring to your personal safety are highlighted in the manual by a safety alert symbol, notices
referring only to property damage have no safety alert symbol. These notices shown below are graded according to
the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will be
used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to property
damage.
Quali󹪝ed Personnel
The product/system described in this documentation may be operated only by personnel quali󹪝ed for the speci󹪝c
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Quali󹪝ed personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Flender products
Note the following:
WARNING
Flender products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended or
approved by Flender. Proper transport, storage, installation, assembly, commissioning, operation and maintenance
are required to ensure that the products operate safely and without any problems. The permissible ambient
conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identi󹪝ed by ® are registered trademarks of Flender GmbH. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software described.
Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the information in this
publication is reviewed regularly and any necessary corrections are included in subsequent editions.
Flender GmbH
Alfred-Flender-Straße 77
46395 BOCHOLT
GERMANY
Document order number: A5033en
Ⓟ 12/2020 Subject to change
Copyright © Flender GmbH 2020.
All rights reserved

Table of contents
1 Introduction ......................................................................................................................................... 11
1.1 General information........................................................................................................... 11
1.2 Lubricants.......................................................................................................................... 12
2 Safety instructions............................................................................................................................... 15
2.1 Security notes.................................................................................................................... 15
2.2 The 󹪝ve safety rules ........................................................................................................... 15
2.3 General information........................................................................................................... 16
2.4 General warnings and symbols........................................................................................... 17
2.5 Special types of danger and personal protective equipment................................................ 18
2.6 Correct use in hazardous zones (explosive atmospheres) .................................................... 20
3 Description........................................................................................................................................... 23
3.1 General description............................................................................................................ 23
3.2 Output shaft versions......................................................................................................... 24
3.3 Housing............................................................................................................................. 25
3.4 Oil supply to the gear unit.................................................................................................. 29
3.4.1 Dip lubrication ................................................................................................................... 29
3.4.2 Pressure lubrication............................................................................................................ 30
3.5 Bearing arrangement of the shafts ..................................................................................... 31
3.6 Shaft seal .......................................................................................................................... 31
3.6.1 Rotary shaft sealing rings ................................................................................................... 31
3.6.2 Taconite seal...................................................................................................................... 32
3.7 Backstop............................................................................................................................ 34
3.8 Torque limiting backstop (special version) .......................................................................... 36
3.9 Cooling.............................................................................................................................. 38
3.9.1 Fan .................................................................................................................................... 39
3.9.2 Cooling coil........................................................................................................................ 40
3.9.3 Mounted oil supply system................................................................................................. 41
3.9.3.1 Mounted oil supply system with air-oil cooler ..................................................................... 41
3.9.3.2 Mounted oil supply system with water-oil cooler ................................................................ 43
3.9.3.3 Pump................................................................................................................................. 45
3.9.3.4 Oil 󹪝lter ............................................................................................................................. 45
3.9.3.5 Pressure monitor................................................................................................................ 45
3.9.4 Separate oil supply system ................................................................................................. 46
3.10 Couplings .......................................................................................................................... 46
3.11 Shrink disk......................................................................................................................... 46
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3.12 Heating ............................................................................................................................. 47
3.12.1 Oil-level monitoring system for the heating elements ......................................................... 48
3.13 Oil level indicator ............................................................................................................... 49
3.14 Oil level monitoring system................................................................................................ 49
3.15 Oil temperature monitoring ............................................................................................... 50
3.16 Bearing monitoring............................................................................................................ 51
3.16.1 Bearing monitoring using a Pt 100 resistance thermometer ................................................ 51
3.16.2 Bearing monitoring by shock-pulse transducer.................................................................... 52
3.17 Speed encoder................................................................................................................... 53
3.18 Auxiliary drive.................................................................................................................... 54
3.18.1 Auxiliary drive, designed as maintenance drive................................................................... 55
3.18.2 Auxiliary drive, designed as a load drive ............................................................................. 58
3.18.3 Overrunning clutch............................................................................................................ 59
3.18.4 Gear units with auxiliary drive and torque-limiting backstop ............................................... 60
4 Application planning ........................................................................................................................... 61
4.1 Scope of delivery ............................................................................................................... 61
4.2 Transport........................................................................................................................... 61
4.3 Attachment points ............................................................................................................. 63
5 Assembly.............................................................................................................................................. 67
5.1 General assembly instructions............................................................................................ 67
5.2 Unpacking the gear unit..................................................................................................... 69
5.3 Gear unit assembly ............................................................................................................ 70
5.3.1 Foundation........................................................................................................................ 70
5.3.1.1 Mounting on a concrete foundation ................................................................................... 71
5.3.1.2 Mounting on a gear unit swing base................................................................................... 76
5.3.2 Mounting .......................................................................................................................... 79
5.3.2.1 Mounting on a housing foot............................................................................................... 79
5.3.3 Mounting the torque arm for the gear unit housing............................................................ 83
5.3.3.1 Mounting the torque arm................................................................................................... 83
5.4 Shaft-mounted gear unit with hollow shaft and parallel keyway.......................................... 83
5.4.1 Preparations ...................................................................................................................... 84
5.4.2 Assembly........................................................................................................................... 84
5.4.2.1 Introduction....................................................................................................................... 84
5.4.2.2 Mounting .......................................................................................................................... 85
5.4.2.3 Axial locking ...................................................................................................................... 86
5.4.3 Dismantling ....................................................................................................................... 86
5.5 Shaft-mounted gear unit with hollow shaft and spline according to DIN 5480..................... 90
5.5.1 Preparations ...................................................................................................................... 90
5.5.2 Assembly........................................................................................................................... 91
5.5.2.1 Pulling on with integrated DU bushing ............................................................................... 91
5.5.2.2 Axial locking ...................................................................................................................... 93
5.5.3 Dismantling ....................................................................................................................... 93
5.6 Shaft-mounted gear unit with hollow shaft and shrink disk................................................. 95
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5.6.1 Assembly........................................................................................................................... 96
5.6.1.1 Pulling on with integrated DU bushing ............................................................................... 97
5.6.1.2 Axial locking ...................................................................................................................... 98
5.6.2 Dismantling the shaft-mounted gear unit ........................................................................... 98
5.7 Shaft-mounted gear unit with 󹪞ange coupling.................................................................... 99
5.8 Couplings ........................................................................................................................ 100
5.9 Connecting components .................................................................................................. 101
5.9.1 Gear units with mounted components ............................................................................. 101
5.9.2 Connecting the cooling coil.............................................................................................. 102
5.9.3 Connecting the air‐oil cooler ............................................................................................ 102
5.9.4 Connecting the water-oil cooler ....................................................................................... 103
5.9.5 Installing a separate oil supply system .............................................................................. 104
5.9.6 Connecting the pressure monitor ..................................................................................... 104
5.9.7 Connecting the heating element ...................................................................................... 104
5.9.8 Connecting the oil-level monitoring system...................................................................... 105
5.9.9 Connecting the Pt 100 resistance thermometer ................................................................ 105
5.9.10 Connecting a speed encoder ............................................................................................ 105
5.9.11 Electrical connections ...................................................................................................... 106
5.10 Tightening procedure....................................................................................................... 106
5.10.1 Introduction..................................................................................................................... 106
5.10.2 Bolt connection classes .................................................................................................... 107
5.10.3 Tightening torques and preload forces.............................................................................. 108
5.11 Final work........................................................................................................................ 109
6 Commissioning .................................................................................................................................. 111
6.1 Measures prior to commissioning..................................................................................... 111
6.1.1 Gear unit with backstop ................................................................................................... 111
6.1.2 Gear unit with auxiliary drive ........................................................................................... 112
6.1.3 Gear units with cooling coil.............................................................................................. 112
6.1.4 Gear units with oil supply system ..................................................................................... 113
6.2 Measures during commissioning ...................................................................................... 113
6.2.1 Heating ........................................................................................................................... 114
7 Operation........................................................................................................................................... 115
7.1 Operating data ................................................................................................................ 115
7.2 Irregularities in operation................................................................................................. 115
7.3 Taking the unit out of service ........................................................................................... 116
8 Servicing ............................................................................................................................................ 117
8.1 General maintenance information.................................................................................... 117
8.2 Maintenance schedule ..................................................................................................... 118
8.3 Maintenance and servicing work ...................................................................................... 119
8.3.1 Cleaning the venting screw .............................................................................................. 119
8.3.2 Checking the oil temperature ........................................................................................... 120
8.3.3 Replacing the backstop .................................................................................................... 120
8.3.4 Filling the backstop with oil.............................................................................................. 121
8.3.5 Filling the overrunning clutch of the auxiliary drive with oil .............................................. 121
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8.3.6 Checking the auxiliary drive ............................................................................................. 121
8.3.7 Checking the speed monitoring of the auxiliary drive........................................................ 122
8.3.8 Measuring the vibration levels of the rolling-contact bearings........................................... 122
8.3.9 Checking the ignition protection system........................................................................... 123
8.3.10 Cleaning the fan and gear unit ......................................................................................... 123
8.3.11 Checking the cooling coil ................................................................................................. 124
8.3.12 Inspecting the shrink disk................................................................................................. 125
8.3.13 Check that all of the fastening bolts are tight.................................................................... 125
8.3.14 General inspection of the gear unit .................................................................................. 125
8.3.15 Final work........................................................................................................................ 125
8.4 Possible faults.................................................................................................................. 126
9 Service & Support .............................................................................................................................. 131
10 Disposal ............................................................................................................................................. 133
11 Spare parts......................................................................................................................................... 135
A Declaration of incorporation ............................................................................................................. 137
B Declaration of conformity.................................................................................................................. 139
C Technical data.................................................................................................................................... 141
C.1 General technical data ..................................................................................................... 141
C.2 Ambient temperature....................................................................................................... 144
C.3 Types............................................................................................................................... 144
C.4 Weights ........................................................................................................................... 145
C.5 Enveloping surface sound pressure level........................................................................... 145
Index .................................................................................................................................................. 149
Tables
Table 2-1 Symbols and markings ............................................................................................................ 16
Table 2-2 General warnings ................................................................................................................... 17
Table 3-1 Designs and associated directions of rotation .......................................................................... 23
Table 3-2 Taconite seal versions ............................................................................................................. 33
Table 3-3 Information about the speci󹪝c heat output.............................................................................. 47
Table 5-1 Dimensions for the threaded holes at the face sides of gear unit hollow shafts......................... 89
Table 5-2 Maximum forcing pressures .................................................................................................... 89
Table 5-3 Maximum forcing pressures ................................................................................................... 95
Table 5-4 Information on tightening fastening bolts ............................................................................. 107
Table 5-5 Preload forces and tightening torques ................................................................................... 108
Table 7-1 Operating data ..................................................................................................................... 115
Table 8-1 Maintenance and servicing activities ..................................................................................... 118
Table 8-2 Possible faults and their recti󹪝cation...................................................................................... 126
Table C-1 ATEX marking ....................................................................................................................... 143
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Table C-2 Enveloping surface sound pressure level................................................................................ 146
Table C-3 Enveloping surface sound pressure level................................................................................ 146
Table C-4 Enveloping surface sound pressure level................................................................................ 147
Figures
Figure 3-1 Output shaft versions.............................................................................................................. 25
Figure 3-2 Sign: Lubrication point............................................................................................................ 26
Figure 3-3 Gear unit equipment on gear units of types B..H ≤ 12.............................................................. 26
Figure 3-4 Gear unit equipment on gear units of types B..H ≥ 13.............................................................. 27
Figure 3-5 Gear unit equipment on gear units of types B..M ≥ 13 ............................................................. 27
Figure 3-6 Gear unit equipment on gear units of type T3.H ≤ 12............................................................... 28
Figure 3-7 Gear unit equipment on gear units of types T3.M ≤ 12: ........................................................... 28
Figure 3-8 Gear unit equipment on gear units of types B3.E ≥ 13 ............................................................. 29
Figure 3-9 Mounted oil supply system on gear units, type B... .................................................................. 30
Figure 3-10 Rotary shaft sealing ring ......................................................................................................... 32
Figure 3-11 Taconite seal........................................................................................................................... 32
Figure 3-12 Design variants of taconite seals ............................................................................................. 33
Figure 3-13 Backstop................................................................................................................................. 35
Figure 3-14 Torque limiting backstop......................................................................................................... 37
Figure 3-15 Gear unit fan .......................................................................................................................... 39
Figure 3-16 Cooling coil connections ......................................................................................................... 41
Figure 3-17 Oil supply system with air-oil cooler mounted on gear unit, type B2..:...................................... 42
Figure 3-18 Oil supply system with water-oil cooler mounted on gear unit, type B2..: ................................. 44
Figure 3-19 Heating for gear units, types B... and T3.. ................................................................................ 48
Figure 3-20 Oil-level monitoring system for gear units, types B... and T3.. .................................................. 50
Figure 3-21 Oil-level monitoring system for gear units, types B... and T3.. .................................................. 51
Figure 3-22 Bearing monitoring using a Pt 100 resistance thermometer: .................................................... 52
Figure 3-23 Bearing monitoring using shock-pulse transducer.................................................................... 53
Figure 3-24 Speed encoder........................................................................................................................ 54
Figure 3-25 Gear unit with main and auxiliary drive ................................................................................... 55
Figure 3-26 Gear unit design ..................................................................................................................... 57
Figure 3-27 Gear unit equipment for types B3.H / T3.H ≤ 12....................................................................... 57
Figure 3-28 Gear unit equipment for types B3.H ≥ 13................................................................................. 58
Figure 4-1 Transport symbols................................................................................................................... 63
Figure 4-2 Shear and lateral pulling when using eye bolts ........................................................................ 64
Figure 4-3 Position of the attachment points for gear units, type B... / T3..:............................................... 65
Figure 4-4 Position of the attachment points for gear units, type B3.E ...................................................... 65
Figure 4-5 Position of the attachment points for gear units, type B..H / T3.H with auxiliary drive: .............. 65
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Figure 4-6 Position of the attachment points for gear units, type B... / T3.. with motor:............................. 66
Figure 4-7 Position of the attachment points for gear units, type B... / T3.. with gear unit swing base:....... 66
Figure 5-1 Stone bolt............................................................................................................................... 72
Figure 5-2 Foundation block.................................................................................................................... 73
Figure 5-3 Inserted anchor bolt................................................................................................................ 74
Figure 5-4 Tightened anchor bolt............................................................................................................. 75
Figure 5-5 Bracing for gear unit swing base ............................................................................................. 78
Figure 5-6 Alignment surface .................................................................................................................. 81
Figure 5-7 Alignment surfaces for gear units up to size 12: ...................................................................... 81
Figure 5-8 Alignment surfaces for gear units above size 13 ...................................................................... 82
Figure 5-9 Torque arm for the gear unit housing ...................................................................................... 83
Figure 5-10 Preparations for gear units with a hollow shaft and parallel keyway ......................................... 84
Figure 5-11 Screw spindle for gear units with hollow shaft and parallel keyway.......................................... 86
Figure 5-12 Dismantling using an end plate............................................................................................... 87
Figure 5-13 Dismantling using hydraulic pulling equipment ....................................................................... 88
Figure 5-14 Hollow shaft with parallel keyway ........................................................................................... 88
Figure 5-15 Preparation for gear units with hollow shaft and spline............................................................ 90
Figure 5-16 Mounting process with integrated DU bushing for gear units with a hollow shaft and spline..... 92
Figure 5-17 Dismantling procedure with end plate for gear units with hollow shaft and spline: .................. 94
Figure 5-18 Dismantling using hydraulic pulling equipment for gear units with hollow shaft and spline ...... 94
Figure 5-19 Preparation for gear units with hollow shaft and shrink disk .................................................... 98
Figure 5-20 Possible displacements ......................................................................................................... 100
Figure 5-21 Alignment process based on the example of a 󹪞exible coupling ............................................. 101
Figure C-1 Rating plate .......................................................................................................................... 141
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Assembly and operating instructions A5033en
10 Edition 06/2020

Introduction 1
Naming convention
This product, which can be used as a gear reduction unit or multiplier gear unit, is referred to
below as "gear unit".
1.1 General information
Purpose of the operating instructions
These operating instructions describe the gear unit and provide information about handling it
- from assembly to maintenance.
Please keep these operating instructions for later use. Please read these operating instructions
prior to handling the gear unit and follow the information in them.
Note
Disclaimer
Please make sure that every person who is commissioned to work on the gear unit has read and
understood these operating instructions prior to handling the gear unit and adheres to all of the
points. Failure to observe these operating instructions can cause product or property damage or
personal injury.
Flender does not accept any liability for damage or operating failures which are due to non-
adherence to these operating instructions.
The gear unit described in these instructions re󹪞ects the state of technical development at the
time these operating instructions went to print.
In the interest of technical advancements, Flender reserves the right to make changes to the
individual components and accessories which are considered necessary for improving their
performance and safety, while maintaining their essential features.
ATEX Directive
The term "ATEX Directive" used in these instructions stands for the harmonization legislation of
the European Union in compliance with the declaration of conformance for equipment and
protective systems for correct use in hazardous zones.
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Basic knowledge required
In order to understand these operating instructions, you will need the following general
knowledge about gear units. You will also need a basic understanding of the following topics:
• Application planning
• Assembly
• Commissioning
• Maintenance
Documentation landscape
These operating instructions form part of the delivery of your gear unit.
These operating instructions form part of the complete documentation supplied with the gear
unit. The complete documentation encompasses other documents, including:
• Data sheet
• List of equipment
• Dimension drawing
• Operating instructions for gear unit lubrication and preservation BA 7300
• Operating instructions for mounted components
• Operating instructions for third-party vendor devices
Copyright
The copyright for these operating instructions is held by Flender.
Without the authorisation of Flender, these operating instructions may not be used wholly or in
parts for competitors’ purposes or be given to third parties.
If you have any technical queries, please contact one of our Customer Services addresses
(Page 131).
1.2 Lubricants
The quality of the oil used must meet the requirements of the operating instructions BA 7300,
which is provided as a separate item, otherwise the warranty provided by Flender will be void.
Flender urgently recommends using one of the oils listed in BA 7300, all of which have been
appropriately tested and meet the requirements.
To avoid misunderstandings, Flender points out that, by making this recommendation, Flender
is not approving the product in the sense of expressing a warranty for the quality of the
lubricants supplied by your supplier. Every lubricant manufacturer is required to guarantee the
quality of his/her products.
Information such as oil type, oil viscosity and required oil quantity can be found on the rating
plate of the gear unit and in the documentation supplied with the gear unit.
Introduction
1.2 Lubricants
Assembly and operating instructions A5033en
12 Edition 06/2020

The oil quantity speci󹪝ed on the rating plate is an approximate value. The actual quantity of oil
required is determined by the marking on the oil dipstick or oil sight glass.
The operating instructions for the current lubricant recommendations of Flender can also be
viewed in the Internet (https://www.󹪞ender.com/lubricants).
The oils listed there undergo continuous testing. As a result, the recommended oil types might
in future be removed from the list or replaced by more advanced oils.
Flender recommends regular inspection to ascertain whether the selected lubricating oil is still
approved by Flender. If it is not, another brand of oil should be selected instead.
Introduction
1.2 Lubricants
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Introduction
1.2 Lubricants
Assembly and operating instructions A5033en
14 Edition 06/2020

Safety instructions 2
2.1 Security notes
Flender o󹪜ers products and solutions with industrial security functions, which support the safe
and secure operation of plants, systems, machines and networks.
In order to safeguard plants, systems, machines and networks against cyber threats it is
necessary to implement (and continually maintain) a holistic industrial security concept that
corresponds to the current state of the art. Flender products and solutions undergo continuous
development in this respect.
Customers are responsible for preventing unauthorised access to their plants, systems,
machines and networks. These systems, machines and components shall be connected to the
company network or the Internet only when and to the extent that this is absolutely necessary
and appropriate protective measures (e.g. 󹪝rewalls and/or network segmentation) shall be
taken.
You can 󹪝nd further information about possible protection measures as part of Industrial
Security in the following international series of standards, for example: IEC 62443 "Network and
system security".
Flender products and solutions undergo continuous development in order to make them even
safer. Flender strongly recommends that you regularly implement product updates as soon as
they become available and that you only use the current product versions. Use of older or no
longer supported versions can increase the risk of cyber threats.
2.2 The 󹪝ve safety rules
In order to protect yourself and prevent any damage to property, always observe the safety
relevant information and the following 󹪝ve safety rules (as per EN 50110-1 "Working on isolated
equipment") when working on electrical components of the plant.
Prior to starting work on the machine, follow the safety rules listed below:
1. Disconnect
Also disconnect auxiliary circuits such as the anti-condensation heater
2. Safeguard against restart
3. Ensure that the system is de-energised
4. Earth and short circuit
5. Cover or cordon o󹪜 adjacent live parts
When all the work is complete, cancel the safety measures in the reverse sequence.
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2.3 General information
Introduction
All work on the gear unit should be performed with care and only by quali󹪝ed personnel.
Symbols on the gear unit
The following symbols apply to the gear unit; some of which are found as coloured markings on
the gear unit:
Table 2-1 Symbols and markings
Points labelled on the gear unit Symbol Coloured markings
Earth connection point
Air relief point yellow
Oil 󹪝lling point yellow
Oil draining point white
Oil level indicator red
Oil level measurement red
Oil over󹪞ow
Connection point for vibration monitoring
Lubrication point red
Apply grease
Lifting eye
Eye bolt
Safety instructions
2.3 General information
Assembly and operating instructions A5033en
16 Edition 06/2020

Points labelled on the gear unit Symbol Coloured markings
Do not unscrew
Alignment surface, horizontal
Alignment surface, vertical
These symbols indicate the oil level check‐
ing procedure using the oil dipstick.
These symbols indicate that the oil dipstick
must be 󹪝rmly screwed in.
2.4 General warnings and symbols
The following table contains general warnings and their associated symbols.
Table 2-2 General warnings
ISO ANSI Warning
Warning - hazardous electrical voltage
Warning - explosive substances
--- Warning - entanglement hazard
--- Warning - hot surfaces
--- Warning - substances that can irritate or which are hazardous to health
--- Warning - caustic substances
--- Warning - suspended load
--- Warning - hand injuries
ATEX certi󹪝cation
Safety instructions
2.4 General warnings and symbols
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2.5 Special types of danger and personal protective equipment
Requirements
Ful󹪝l the following requirements before commencing work on the gear unit:
• Ensure that the oil pressure lines are depressurised.
• Only perform work on the gear unit when it is not in operation.
• Disconnect electrical systems from the power supply.
DANGER
Electric shock
Live parts can cause electric shock.
Ensure that the entire plant is de-energised before starting electrical installation work.
Protective equipment
Wear the following personal protective equipment when handling the gear unit:
• Safety shoes
• Overalls
• Helmet
• Safety gloves
• Safety goggles
WARNING
Risk of eye injury
Small foreign particles such as sand or dust can enter the cover plates of the rotating parts and
be hurled back by them.
Wear safety goggles.
Dangers during operation
Damage to the gear unit is possible.
Safety instructions
2.5 Special types of danger and personal protective equipment
Assembly and operating instructions A5033en
18 Edition 06/2020

Switch the gear unit to standstill immediately if inexplicable changes are noticed during
operation. Such changes may include unusual gear unit noise or a signi󹪝cant increase in
operating temperature.
WARNING
Risk of falling
There is an increased risk of falling when standing or walking on the gear unit during operation.
Only walk or stand on the gear unit and its mounted components for maintenance and repair
work when it is at a standstill. Do not walk or stand on shaft ends, protection covers, mounted
components or pipes.
WARNING
Danger to life through rotating or moving parts
There is danger that rotating or moving parts may catch hold of you or pull you in.
Secure rotating and/or moving parts against contact using safeguards.
Surface temperature
The surface temperatures of the gear unit can become very extreme depending on the
operating conditions.
WARNING
Risk of burns
Possible risk of serious burn injury from hot surfaces (> 55 °C).
Wear suitable protective gloves and protective clothing.
WARNING
Risk of scalding
Risk of serious injury possible through escaping hot operating media when these are being
changed.
Wear suitable protective gloves, safety goggles and protective clothing.
WARNING
Danger due to low temperatures
Possible risk of serious injuries due to frost (pain, numbness, frostbite) on cold surfaces (< 0 °C).
Wear suitable protective gloves and protective clothing.
Safety instructions
2.5 Special types of danger and personal protective equipment
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Chemical substances
Injuries can be sustained when using chemical substances.
WARNING
Risk of chemical burns due to chemical substances
There is a risk of chemical burns when handling aggressive cleaning agents.
Please observe the manufacturer's guidelines on how to handle cleaning agents and solvents.
Wear suitable protective equipment (gloves, safety goggles). Please use binding agents to
immediately clear up any spilt solvent.
CAUTION
Risk of injury due to chemically aggressive operating materials
There is a risk of injury to eyes and hands when handling chemically aggressive operating
materials.
Please observe the safety instructions in the data sheets of the oil used. Wear suitable
protective equipment (gloves, safety goggles). Use an oil-binding agent to immediately clean
up spilt oil.
2.6 Correct use in hazardous zones (explosive atmospheres)
Only use the gear unit according to the conditions speci󹪝ed in the service and delivery contract
and the technical data in the annex (Page 141). Deviating operating conditions are considered
improper use. The user or owner of the machine or plant is solely liable for any resulting damage.
When using the gear unit please speci󹪝cally observe the following:
• Do not make any modi󹪝cations to the gear unit which go beyond the permissible handling
described in these operating instructions. This also applies to safety features designed to
prevent accidental contact.
• Only ever use original spare parts.
Other spare parts are not tested and approved by Flender. Non-approved spare parts may
possibly change the design characteristics of the gear unit and thus impair its active or
passive safety.
Flender will accept no liability or warranty whatsoever for damage occurring as a result of the
use of non-approved spare parts. The same applies to any accessories which were not
supplied by Flender.
• All mounted components must strictly comply with the requirements laid down in the ATEX
directive.
Safety instructions
2.6 Correct use in hazardous zones (explosive atmospheres)
Assembly and operating instructions A5033en
20 Edition 06/2020