SKF LINCOLN ATEX PSG1 Series User manual

Version 01
951-180-085-EN
EN
Operating instructions
according to ATEX Directive 2014/34/EU
ATEX progressive metering devices
of the series PSG1, PSG2, PSG3

Jürgen Kreutzkämper
Manager R&D Germany - SKF Lubrication Business Unit
Stefan Schürmann
Manager R&D Hockenheim/Walldorf - SKF Lubrication Business Unit
EU Declaration of Conformity pursuant to ATEX Directive 2014/34/EU, Annex X
The manufacturer, SKF Lubrication Systems Germany GmbH, Hockenheim Plant, 2. Industriestr. 4, DE - 68766 Hockenheim hereby declares the conformity
of the device:
Designation: Progressive metering devices, Series: PSG1; PSG2 and PSG3
Part Number: 24-3830-*, 24-3850-*, 24-3810-*, 24-3820-*
Year of manufacture: See type plate
Explosion protection marking:
II 1G IIC T6 Ga /-20...+70°C II 1D IIIC T90°C Da / -20 ...+70°C Progressive metering device with proximity switch 24-1884-2288
II 2G IIC T6...T1 Gb/-20...+85°C II 1D IIIC T135°C Da / -20...+85°C Progressive metering device with proximity switch 24-1884-2613
II 2G IIB T4 Gb /-20...+40°C II 2D IIIC T135°C Db / -20...+40°C Progressive metering device with proximity switch 24-1884-2613 and
2/2 directional solenoid valve 24-1254-2212
II 2G IIC T6 Gb/-20...+70°C II 1D IIIC T90°C Da / -20...+70°C Progressive metering device with proximity switch 24-1884-2292
II 2G IIB T4 Gb /-20...+40°C II 2D IIIC T135°C Db / -20...+40°C Progressive metering device with 2/2 directional solenoid valve 24-1254-2212
II 2G IIB T4 Gb /-20...+40°C II 2D IIIC T135°C Db / -20...+40°C Progressive metering device with proximity switch 24-1884-2292 and
2/2 directional solenoid valve 24-1254-2212
with all relevant harmonization provisions of the following Directives at the time of placing on the market.
The technical documentation pursuant to: ATEX Directive 2014/34/EU Annex VIII No. 2 has been prepared. Furthermore, the following Directives and (har-
monized) standards were applied in the applicable areas:
Standard Edition Standard Edition Standard Edition Directives Edition
EN ISO 80079-36 2016 EN 50581:2012 EN 60947-5-6 2000  2014/30/EU 2014
EN 1127-1 2011 EN 60947-5-2 2007/A1:2012 2011/65/EU RoHS II 2011
The device must not be put into service until the machinery into which it is to be incorporated has been declared in conformity with the provisions of ATEX
Directive 2014/34/EU and all other applicable Directives.
Hockenheim, 10/2/2019
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Training
SKF conducts detailed training in order to
enable the maximum safety and efficiency.
SKF recommends taking advantage of this
training. For information, contact the rel-
evant SKF service address.
Copyright
© SKF. All rights reserved.
Warranty
The instructions do not contain any
information on the warranty. This can
be found in our General Terms and
Conditions.
Notes on operating instructions
These operating instructions are operating
instructions in accordance with ATEX Direc-
tive 2014/34/EC.
Disclaimer of liability
The manufacturer shall not be held liable for
damage resulting from:
○Improper usage,
assembly, operation, configuration,
maintenance, repair, or accidents
○Improper reaction to malfunctions
○Unauthorized modifications to the
product
○Intentional or gross negligence
○Use of non-original
SKF spare components
The maximum liability for loss or damage
resulting from the use of our products is
limited to the purchase price. Liability for
indirect damage of any kind is excluded.
Masthead
Manufacturer
SKF Lubrication Systems Germany GmbH
Address of manufacturer plants
Headquarters
Walldorf Plant
Heinrich-Hertz-Str. 2-8
69190 Walldorf
Germany
Tel: [phone]
Fax: [phone]
Berlin Plant
Motzener Straße 35/37
12277 Berlin
Germany
Tel. [phone]
Fax [phone]
E-mail: [e-mail]
www.skf.com/lubrication
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Masthead

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Table of contents
Masthead .......................................................................................... 3
Explanation of symbols and signs ....................................................... 7
1. Safety instructions ................................................................ 9
1.1 General safety instructions....................................................................9
1.2 General behavior when handling the product .....................................9
1.3 Intended use..........................................................................................10
1.4 Modifications to the product................................................................10
1.5 Foreseeable misuse..............................................................................11
1.6 Prohibition of certain activities............................................................12
1.7 Painting plastic components ...............................................................12
1.8 Inspections prior to delivery ................................................................12
1.9 Referenced documents ........................................................................12
1.10 Markings on the product......................................................................13
1.11 Notes on the type plate ........................................................................13
1.12 Note on CE marking..............................................................................13
1.13 Explosion protection marking in accordance with
Directive 2014/34/EU...................................................................................14
1.14 Persons authorized to use the product ..............................................14
1.14.1 Operator...........................................................................................14
1.14.2 Qualified mechanic .........................................................................14
1.14.3 Qualified electrician ........................................................................15
1.14.4 Specialist in maintenance and servicing in
potentially explosive atmospheres ...............................................15
1.15 Instruction of outside fitters ................................................................15
1.16 Provision of personal protective gear.................................................15
1.17 Operation ...............................................................................................15
1.18 Emergency shutdown ..........................................................................15
1.19 Transport, assembly, maintenance, malfunction,
repair, shutdown, disposal ...................................................................16
1.20 First start-up, daily start-up ...............................................................17
1.21 Cleaning .................................................................................................18
1.22 Special safety instructions regarding explosion protection .............18
1.23 Nullification of ATEX approval..............................................................20
1.24 Operation in potentially explosive atmospheres ...............................20
1.25 Explosion protection marking..............................................................21
1.26 Obligations of the operator..................................................................21
1.26.1 Identification of hazards.................................................................21
1.26.2 Explosion protection measures.....................................................21
1.26.4 Duty to provide instruction and training ......................................22
1.26.3 Provision of necessary information ..............................................22
1.27 Residual risks ........................................................................................23
1.28 Residual ATEX risks...............................................................................24
2. Lubricants .......................................................................... 26
2.1 General information .............................................................................26
2.2 Selection of lubricants..........................................................................26
2.3 Material compatibility...........................................................................26
2.4 Temperature properties.......................................................................26
2.5 Aging of lubricants................................................................................27
2.5.1 Solid lubricants ..............................................................................28
3. Overview, functional description .......................................... 29
3.1 Overview of progressive metering devices ........................................29
3.2 ATEX marking according to Directive 2014/34/EU (ATEX)..............29
3.3 Information on volume data................................................................30
3.4 Functioning of a PSG progressive metering device...........................31
3.5 Information on the design of a PSG progressive metering device ..32
3.6 Dummy module ....................................................................................33
3.7 Consolidation of outlets........................................................................33
3.8 Overview of a general progressive system ........................................34

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Table of contents
3.8.1 Functional description of a general progressive system ............35
3.9 Overview of PSG1 progressive metering device series....................36
3.10 Overview of PSG2 progressive metering device series....................37
3.11 Overview of PSG3 progressive metering device series....................38
4. Technical data ..................................................................... 39
4.1 PSG1-ATEX General technical data....................................................39
4.1.1 PSG1 - Basic metering device ......................................................39
4.1.2 PSG1 pressure-loss diagram........................................................41
4.1.3 PSG1 with inductive proximity switch ..........................................42
4.2 PSG2-ATEX General technical data....................................................43
4.2.1 PSG2 - Basic metering device ......................................................43
4.2.2 PSG2 with 2/2 directional solenoid valve ....................................45
4.2.3 PSG2 with inductive proximity switch 24-1884-2292 .............46
4.2.4 PSG2 with inductive proximity switch 24-1884-2613 .............47
4.3 PSG3-ATEX General technical data...................................................48
4.3.1 PSG3 - Basic metering device ......................................................48
4.3.2 PSG3 with inductive proximity switch 24-1884-2292 .............50
5. Delivery, returns, storage .................................................... 51
5.1 Delivery..................................................................................................51
5.2 Return shipment...................................................................................51
5.3 Storage...................................................................................................51
5.4 Storage temperature range.................................................................52
5.5 Storage conditions for parts filled with lubricant ..............................52
5.5.1 Storage period up to 6 months.....................................................52
5.5.2 Storage period between 6 and 18 months..................................53
5.5.3 Storage period more than 18 months .........................................53
6. Assembly ............................................................................ 54
6.1 General information .............................................................................54
6.2 Assembly location .................................................................................54
6.3 Mechanical connection.........................................................................55
6.3.1 Minimum mounting dimensions...................................................55
6.4 Installing the PSG1 ...............................................................................56
6.4.1 Basic design PSG1-ATEX ..............................................................56
6.4.2 PSG1 tightening torques ...............................................................57
6.4.3 PSG1-ATEX with visual cycle indicator (ZY).................................58
6.4.4 PSG1-ATEX with visual cycle indicator, housing,
and inductive proximity switch (ZS) ..............................................59
6.5 Assembly PSG2-ATEX..........................................................................60
6.5.1 Basic design PSG2-ATEX ..............................................................60
6.5.2 PSG2 tightening torques ...............................................................61
6.5.3 PSG2-ATEX with visual cycle indicator (ZY).................................62
6.5.4 PSG2-ATEX with pressure-resistant inductive
proximity switch 24-1884-2292 .................................................63
6.5.5 PSG2-ATEX with pressure-resistant inductive
proximity switch 24-1884-2613 .................................................64
6.5.6 PSG2-ATEX with 2/2 directional solenoid
valve 24-1884-2292 ....................................................................65
6.6 Assembly PSG3-ATEX..........................................................................66
6.6.1 Basic design PSG3..........................................................................66
6.6.2 PSG3 tightening torques ...............................................................67
6.6.3 PSG3-ATEX with visual cycle indicator (ZY).................................68
6.6.4 PSG3 with cycle indicator, housing, and inductive
proximity switch 24-1884-2292 .................................................69

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6.7 Installing a PSG modular metering device.........................................70
6.8 Consolidation of outlets........................................................................71
6.9 Changing a PSG module ......................................................................72
6.10 Connecting the lubricant lines.............................................................73
6.10.1 Installing the lubrication piping ....................................................74
6.11 Attachment of bridges (crossporting).................................................75
6.12 Establishing equipotential bonding.....................................................78
6.13 Electrical connection ............................................................................79
6.13.1 Inductive proximity switch 24-1884-2288 ................................79
6.13.2 Inductive proximity switch 24-1884-2292 ................................79
6.13.3 Inductive proximity switch 24-1884-2613 ................................80
6.13.4 Connecting directional solenoid valve 24-1254-2212 .............80
7. First start-up ...................................................................... 81
7.1 Venting a grease progressive system .................................................81
7.2 Venting an oil progressive system.......................................................82
7.3 Checklist for first start-up....................................................................82
7.4 Inspections before first start-up .........................................................83
7.5 Inspections during first start-up.........................................................83
8. Operation ........................................................................... 84
9. Cleaning ............................................................................. 85
9.1 Cleaning agents.....................................................................................85
9.2 Exterior cleaning ...................................................................................85
9.3 Interior cleaning....................................................................................85
10. Maintenance ....................................................................... 86
11. Malfunctions, causes, and remedies ..................................... 87
11.1 Prior to beginning troubleshooting ....................................................87
11.2 Metering device and system malfunctions.........................................88
12. Repairs ............................................................................... 91
12.1 General notes ........................................................................................91
12.2 Replace inductive proximity switch.....................................................92
13. Shutdown, disposal ............................................................. 93
13.1 Temporary shutdown ...........................................................................93
13.2 Permanent shutdown, disassembly ...................................................93
13.3 Disposal..................................................................................................93
14. Spare parts ........................................................................ 94
15. Accessories ....................................................................... 100
16. Declarations of Conformity ................................................ 102
16.1 Inductive proximity switch 24-1884-2288 ................................... 102
16.2 Inductive proximity switch 24-1884-2292 ................................... 103
16.3 Inductive proximity switch 24-1884-2613 ................................... 104
16.4 Directional solenoid valve 24-1254-2212 .................................... 105

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Explanation of symbols, signs, and abbreviations
Explanation of symbols and signs
General warning Risk of electrical shock Risk of slipping Hot surfaces
Being drawn into machinery Crushing hazard Pressure injection Suspended load
Electrostatic sensitive
components
Potentially explosive
atmosphere Reserve Reserve
Wear personal protective gear
(goggles)
Wear personal protective
gear (face mask)
Wear personal protective gear
(gloves)
Wear personal protective gear
(protective clothing)
Wear personal protective gear
(protective footwear) Unlock the product General notes Unauthorized persons must be kept away
CE marking Disposal of waste electrical
and electronic equipment Disposal, recycling PE conductor PE conductor
Warning level Consequence Probability Symbol Meaning
DANGER Death, serious
injury Immediate Chronological instructions
WARNING Death, serious
injury Possible Bullet list items
CAUTION Minor
injury Possible Indicates the requirements that must be met for the actions de-
scribed in the following
IMPORTANT NOTE Property damage Possible

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EN Explanation of symbols, signs, and abbreviations
Abbreviations and conversion factors
re: regarding °C degrees Celsius °F degrees Fahrenheit
approx. approximately K Kelvin Oz. ounce
i.e. that is N Newton fl. oz. Fluid ounce
etc. et cetera h hour in. inch
poss. possibly s second psi pound per square inch
if necessary if necessary d day sq.in. square inch
usually usually Nm Newton meter cu. in. cubic inch
incl. including ml milliliter mph miles per hour
min. minimum ml/d milliliters per day RPM revolutions per minute
max. maximum ccm cubic centimeter gal. gallon
Min. minute mm millimeter lb. pound
etc. et cetera l liter hp horsepower
e.g. for example db (A) sound pressure level kp kilopound
kW kilowatt > greater than fpsec feet per second
U voltage < less than Conversion factors
R Resistance ± plus minus Length 1 mm = 0.03937 in.
I current intensity Ø diameter Area 1 cm² = 0.155 sq.in.
V volt kg kilogram Volume 1 ml = 0.0352 fl.oz.
Wwatt RH relative humidity 1 l = 2.11416 pints (US)
AC alternating current ≈ approximately Ground 1 kg = 2.205 lbs
DC direct current = equal to 1 g = 0.03527 oz.
A ampere % percent Density 1 kg/cm³ = 8.3454 lb./gal(US)
Ah ampere hour ‰ per mil (thousandth) 1 kg/cm³ = 0.03613 lb./cu.in.
Hz Frequency (Hertz) ≥ greater or equal Force 1 N = 0.10197 kp
NC normally closed contact ≤ less or equal Pressure 1 bar = 14.5 psi
NO Make-contact (normally open) mm2square millimeter Temperature °C = (°F-32) x 5/9
rpm Revolutions per minute Power 1 kW = 1.34109 hp
Acceleration 1 m/s² = 3.28084 ft./s²
Speed 1 m/s = 3.28084 fpsec.
1 m/s = 2.23694 mph

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1. Safety instructions
1. Safety instructions
1.1 General safety instructions
○The operator must ensure that the in-
structions are read by all persons tasked
with working on the product or who
supervise or instruct such persons. The
operator must also ensure that the staff
fully understands the content of the in-
structions. Putting the products into op-
eration or operating them without having
read the instructions is prohibited.
○Retain the instructions for further use.
○The products described here were
manufactured in accordance with current
state-of-the-art technology. Risks may,
however, arise from non-compliant us-
age and may result in personal injury or
damage to material assets.
○Any malfunctions which may affect safety
must be remedied immediately. In ad-
dition to these instructions, the statu-
tory regulations for accident prevention
and environmental protection must be
observed.
1.2 General behavior when handling the
product
○The product may only be used in aware-
ness of the potential dangers, in proper
technical condition, and according to the
information in this manual.
○Familiarize yourself with the functions
and operation of the product. The speci-
fied assembly and operating steps and
their sequences must be observed.
○Any unclear points regarding proper
condition or correct assembly/operation
must be clarified. Operation is prohibited
until issues have been clarified.
○Unauthorized persons must be kept
away.
○Wear personal protective equipment.
○All safety regulations and in-house
instructions relevant to the particular
activity must be observed.
○Never use any part of the centralized
lubrication system as a stand or step or
for climbing.
○Responsibilities for different activities
must be clearly defined and observed.
Uncertainty seriously endangers safety.
○Guards and safety devices must not be
removed, modified, nor disabled dur-
ing operation and must be checked for
proper function and completeness at
regular intervals.
○If protective and safety mechanisms
must be removed, they must be rein-
stalled immediately following conclusion
of work and then inspected for proper
function.

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1.3 Intended use
Feed lubricants only in compliance with the
specifications, technical data, and limits pre-
sented in this manual. Usage is permitted
exclusively in the context of commercial or
business activity by professional users.
Modular metering devices (progressive
metering devices) of the series PSG are
designed for positively driven distribution of
lubricants (oils/greases) in centralized lubri-
cation systems.
The maximum inlet volumetric flow of the
progressive metering devices in the series is
as follows:
PSG1 0.8 l/min
PSG2 2.5 l/min
PSG3 6.0 l/min.
The maximum permissible operating pres-
sure is 200 bar in all three basic designs.
This may be lower if attachments are con-
nected. Consult and comply with the rel-
evant data from Chapter 4, "Technical data."
The inlet and outlet fittings and their con-
necting lines must be designed for these
parameters.
○Any malfunctions that occur must be
resolved according to responsibility. The
supervisor must be notified immediately
in case of malfunctions outside one's in-
dividual scope of responsibility.
The technical requirements for the installa-
tion of the modular metering devices are set
out in Chapter 6, "Assembly." These require-
ments must be complied with. The same
applies to the Technical data, Chapter 4.
Only ATEX attachments and monitoring
equipment approved by SKF for the PSG1,
PSG2 and PSG3 series metering devices
may be installed.
1.4 Modifications to the product
Unauthorized modifications and changes
can have an unpredictable effect on safety.
Unauthorized modifications and changes
are therefore prohibited.

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1. Safety instructions
1.5 Foreseeable misuse
Any usage of the product other than as
specified in this manual is strictly prohibited.
Particularly prohibited are:
○Use outside the specified ambient tem-
perature range
○Use of non-specified equipment
○Use of dirty lubricants or lubricants with
air inclusions.
○Use of C3 versions in areas with aggres-
sive, corrosive substances (e.g., high salt
load)
○Use of plastic parts in areas with high
ozone load or in areas with damaging
radiation (e.g., ionizing radiation)
○Use to feed, forward, or store hazardous
substances and mixtures as defined in
Annex I Part 2-5 of the CLP Regula-
tion (EC 1272/2008) or HCS 29 CFR
1910.1200 that are marked with hazard
pictograms GHS01-GHS06 and GHS08
○Use to feed / forward / store gases,
liquefied gases, dissolved gases, va-
pors, or fluids whose vapor pressure
exceeds normal atmospheric pressure
of 1013 mbar [14.69 psi] by more than
0.5 bar [7.25 psi] at their maximum per-
missible operating temperature
○Use in another, more critical explosion
protection zone than specified on the
type plate.
○Use with improperly performed subse-
quent finish. The finish or paint coat must
meet the requirements of the standards
applicable to ATEX.
○Use to feed, forward, or store lubricants
containing volatile solvents.
○Use in potentially explosive gases and
vapors whose ignition temperature is
less than 125% of the maximum surface
temperature.
○Use in potentially explosive dusts whose
minimum ignition temperature and glow
temperature are less than 150% of the
maximum surface temperature.
○Use of lubricants with temperatures
above the maximum permissible ambient
temperature.

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1.6 Prohibition of certain activities
The following activities must be performed
only by employees of the manufacturer or
persons authorized by the manufacturer
due to possibly undetectable sources of er-
ror or due to statutory requirements:
○Replacement of or modifications to the
pistons of the modules
1.7 Painting plastic components
The painting of all plastic components
and seals of the products described here
is prohibited. Completely mask or remove
plastic components before painting the main
machine.
1.8 Inspections prior to delivery
The following tests were performed prior to
delivery:
○Safety and functional tests
○For electrically operated products: Elec-
trical tests according to
DIN EN 60204-1, VDE 0113-1
○
Inspections pursuant to the requirements
of the ATEX Directive
1.9 Referenced documents
In addition to this manual, the following
documents must be observed by the re-
spective target group:
○Operational instructions, approval rules
○The safety data sheet of the lubricant
used
If applicable:
○Project planning documents
○Instructions from suppliers of purchased
parts
○Instructions for other components for
setting up the centralized lubrication
system
○Other relevant documents for integration
of the product into the main machine,
system
○The explosion protection document of
the operator

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1. Safety instructions
1.10 Markings on the product
Equipotential bonding connec-
tions
on the product
In accordance with the results of
the workstation risk assessment,
additional labels (e.g., warnings,
safety signs, prohibition signs or
labels in accordance with CLP/GHS)
are to be attached by the operator
if necessary.
1.11 Notes on the type plate
The rating plate provides important data
such as the type designation, order number,
etc.
To avoid loss of this data in case the type
plate becomes illegible, these characteristics
should be entered in the manual.
Material number: 24-38___________ATEX
CE EX _______________________
CE EX __________________________
Series No.________________
1.12 Note on CE marking
The CE marking is based on the require-
ments of the applied Directives:
○ATEX 2014/34 EU
○2014/30/EU
Electromagnetic Compatibility
○2011/65/EU
(RoHS II) Directive on the restriction of
the use of certain hazardous substances
in electrical and electronic equipment
Note on Low-Voltage Directive 2014/35/EU
The protection objectives of the Low Voltage
Directive 2014/35/EU are met in accor-
dance with Annex II, No. 1.2.7 of the ATEX
Directive 2014/34/EU

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Note on Pressure Equipment Directive
2014/68/EU
Due to its performance characteristics, the
product does not reach the limit values
defined in Article 4, Paragraph 1, Subpara-
graph (a) (ii) and is excluded from the scope
of Pressure Equipment Directive 2014/68/
EU in accordance with Article 1, Paragraph 2
Subparagraph (f).
1.14 Persons authorized to use the product
1.14.1 Operator
A person competent due to training, knowl-
edge, and experience to execute the func-
tions and activities associated with normal
operation. This also includes the avoidance
of possible hazards that may arise during
operation.
1.14.2 Qualified mechanic
A person with appropriate technical train-
ing, knowledge, and experience who can
recognize and avoid the hazards that may
occur during transport, assembly, first start-
up, operation, maintenance, repair, and
dismantling.
1.13 Explosion protection marking in
accordance with Directive 2014/34/EU
The ignition hazard analysis conducted
in accordance with EN 80079-36 / -37
found that the progressive metering devices
without electrical attachments described in
these instructions do not constitute own po-
tential sources of ignition. They consequent-
ly do not fall under the scope of Directive
2014/34/EU and thus do not bear explosion
protection marking. The combination of
the metering devices described here with
the explosion-proof electrical components
specified in this manual does not create an
additional source of ignition. The explo-
sion protecting marking on these meter-
ing devices is based solely on the attached
explosion-proof electrical component.

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1. Safety instructions
1.15 Instruction of outside fitters
Before commencing work, the operator
must inform outside fitters of the opera-
tional safety regulations, applicable accident
prevention regulations, and the functions of
the main machine and its protective devices.
1.16 Provision of personal protective gear
The operator must provide personal protec-
tive gear appropriate for the location and
intended application. This also includes ESD
clothing and ESD tools for work in a poten-
tially explosive atmosphere.
1.17 Operation
The following must be observed during first
start-up and operation:
 All information within this manual and
all information within the referenced
documents
 All laws and regulations that the operator
must observe
1.18 Emergency shutdown
Shut down the product in an emergency by:
○Switching off the main machine in which
the product is integrated
○If necessary, pressing the on/off switch
on the main machine
1.14.3 Qualified electrician
A person with appropriate technical training,
knowledge, and experience who can recog-
nize and avoid hazards that may result from
electricity.
1.14.4 Specialist in maintenance and
servicing in potentially explosive
atmospheres
This is a person competent due to qualified
technical education, training, and experi-
ence to recognize risks and possible hazards
when working on the device or subcompo-
nents in potentially explosive atmospheres
and to rectify these by taking suitable ac-
tions. The specialist has knowledge of the
various types of protection, installation
procedures, and explosive atmosphere clas-
sifications. The specialist is familiar with the
rules and requirements relevant to their ac-
tivity and to explosion protection, especially
ATEX Directives 2014/34/EU and
1999/92/EC.

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limbs can be pinched by unintended
movements.
○Assemble the product only outside the
operating range of moving parts, at an
adequate distance from sources of heat
or cold. Other units of the machine, the
vehicle must not be damaged or impaired
in their function by the installation.
○Dry any wet, slippery surfaces or cover
appropriately.
○Cover hot or cold surfaces appropriately.
○Work on electrical components may be
performed only by qualified electricians.
Note possible waiting times for dis-
charge. Work on electrical components
may be performed only in a voltage-free
state and using tools suitable for electri-
cal work.
○Establish the electrical connection only in
accordance with the valid circuit diagram
and in observance of the relevant regula-
tions and the local electrical operating
conditions.
○Do not touch cables or electrical compo-
nents with wet or moist hands.
○Fuses must not be bridged. Always re-
place defective fuses with fuses of the
same type.
○Ensure proper grounding of the product.
○Drill required holes only on non-critical,
non-load-bearing parts. Use existing
boreholes. Do not damage lines or cables
when drilling.
○
Observe any possible wearing spots. Pro-
tect components appropriately.
1.19 Transport, assembly, maintenance, malfunction, repair, shutdown, disposal
○Prior to the start of this work, all relevant
persons must be notified of it. Precau-
tionary operational measures, work
instructions must be observed.
○Transport only with suitable transport
and lifting gear on suitable paths.
○Maintenance and repair work can be
subject to restrictions at low or high tem-
peratures (e.g., altered flow properties
of the lubricant). Maintenance and repair
work should therefore preferably be per-
formed at room temperature.
○Prior to performing work, the product
and the machine in which the product
will be integrated must be de-energized,
depressurized, and secured against un-
authorized activation.
○Take appropriate measures to ensure
that moving, detached parts are im-
mobilized during the work and that no

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○All components used must be designed
for:
- The maximum operating pressure
- The maximum/minimum ambient
temperature
-The lubricant to be delivered
-The required ATEX zone
-The operating/ambient conditions
at the place of use.
○No parts may be subjected to torsion,
shearing, or bending.
○Check parts for contamination before use
and clean if necessary.
○Lubrication lines should be filled with lu-
bricant prior to assembly. This simplifies
subsequent bleeding of the system.
○Adhere to the specified torques. Use
a calibrated torque wrench when
tightening.
○Use suitable hoisting equipment when
working with heavy parts.
○Avoid mixing up or incorrectly assem-
bling disassembled parts. Label parts.
1.20 First start-up, daily start-up
Ensure that:
○All safety mechanisms are fully present
and functional
○All connections are properly connected
○All parts are correctly installed
○All warning labels on the product are fully
present, visible, and undamaged
○Illegible or missing warning labels are
immediately replaced

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1.22 Special safety instructions regarding explosion protection
○Depending on the operating conditions,
check the product for damage that may
present a risk of ignition and check for
proper function. An inspection must be
conducted at least every 12 months.
○The lubricant’s ignition temperature has
to be at least 50 kelvin above the max.
permissible surface temperature.
○The ignition temperature of the sur-
rounding potentially explosive gases and
vapors must be greater than 125% of the
maximum surface temperature.
○The minimum ignition temperature and
the glow temperature and the surround-
ing potentially explosive dusts must be
greater than 150% of the maximum sur-
face temperature.
○The usage limits for explosion protection
are clearly defined in the explosion pro-
tection marking by the device categories,
○Always behave so as to avoid explosion
hazards.
○A written work authorization from the
operator is required prior to initiating
work in potentially explosive atmo-
spheres. Unauthorized persons must be
kept away.
○There must be no evidence that parts of
the explosion protection are missing or
non-functional. If this is not excluded,
switch off the machine and immediately
notify the supervisor.
○Explosion protection measures must
never be deactivated, changed, or
bypassed.
○The introduction of ignition sources such
as sparks, open flames, and hot surfaces
into potentially explosive atmospheres is
prohibited.
1.21 Cleaning
○There is a fire hazard from the use of
flammable cleaning agents. Use only
non-flammable cleaning agents that are
suitable for the intended purpose.
○Do not use corrosive cleaning agents.
○Do not use steam-jet equipment or high-
pressure cleaners. This may damage
electrical components.
Observe the IP enclosure rating.
○Cleaning work must not be performed on
conducting components.
○Mark wet areas accordingly.

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1. Safety instructions
gas and dust groups and temperature
classes. Light metal dusts, as a poten-
tially explosive ambient medium, are
always prohibited even when dust group
IIIc is specified.
○Use only tools and clothing approved for
use in potentially explosive atmospheres
(ESD).
○Transport/assembly/repairs and work on
electrical components may be performed
only if it is ensured that there is no explo-
sive atmosphere present.
○Repairs or modifications to explosion-
proof machinery may be performed only
by the manufacturer or a workshop rec-
ognized by a notified body and accepted
by the manufacturer. If the work is not
performed by the manufacturer itself, the
repair must be accepted and approved in
writing by an inspector from a recognized
validation organization. The repair is
marked by a repair sign on the machine
containing the following information:
- Date
- Executing company
- Type of repair
- If applicable, mark by expert
○Shipping damage may lead to the loss of
explosion protection. If there is apparent
shipping damage, do not install or put
into operation the product.
○Shipping damage may lead to the loss of
explosion protection. If there is apparent
shipping damage, do not install or put
into operation the product.
○The product may be cleaned only if there
is no potentially explosive atmosphere.
○All parts of the grounding concept must
be properly present and connected with
the main machine.
○Handle materials in such a way that no
sparks may arise from tilting, dropping,
slipping, rubbing, or striking. If necessary,
cover materials by appropriate means.
○Never disconnect any plug-in connec-
tions under electrical voltage. Secure
plug-in connections against discon-
nection by hand using the locking clips
provided
○The operator must critically examine
whether operation without an empty
signal results in a new hazard potential
(e.g., due to heating of bearings on the
machine in the range of the ignition
temperature). If this cannot be reliably
excluded, an empty signal must be pro-
vided or appropriate organizational mea-
sures taken to monitor the temperature
of the bearings.
○Avoid / immediately remove any accu-
mulated dust. Accumulated dust has a
thermal insulating effect and promotes
the formation of a potentially explosive
atmosphere when agitated/swirled.

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○The product must be integrated into the
operator’s lightning protection scheme.
○All parts must be inspected for corrosion
on a regular basis. Replace affected parts
○Junction boxes must be securely closed
and the cable glands properly sealed.
○Any additional electrical monitoring
equipment must be securely connected
and correctly configured.
○When assembling the metering devices
at the place of use, equipotential bond-
ing must be ensured by sufficiently large,
conductive metal contact with the at-
tachments and with the main machine.
1.23 Nullification of ATEX approval
The ATEX approval is nullified by:
○Improper usage
○Unauthorized alterations
○Use of non-original SKF spare/replace-
ment components
○Failure to comply with this manual and
referenced documents
○Use of non-specified equipment
○Failure to observe the prescribed repair
and maintenance intervals
○Operation with a damaged, missing, or
improperly performed subsequent finish
that does not meet the requirements of
the standards applicable to ATEX.
1.24 Operation in potentially explosive
atmospheres
Operation is only permitted in compliance
with:
○All information within this manual and
the information within the referenced
documents
○All laws and regulations that the operator
must observe
○The information on explosion protection
according to Directive 1999/92/EC (ATEX
137)
○The ATEX approval