Lincoln SKF KFU2 Series User manual

Assembly Instructions
Compact unit for use in centralized
lubrication systems
Product series: KFU2(6)-... and KFUS2-...
Created on:
19.01.2023
Document no.:
951-170-242-EN
Version:
01
Read these instructions before
installation or start
-up of the
product and keep them readily
available for later
consultation!

2
Original EC Declaration of Incorporation in accordance with Directive 2006/42/EC,
Appendix II Part 1 B
The manufacturer hereby declares at its sole responsibility that the partly completed machinery conforms to the essential health and safety requirements
of the Machinery Directive 2006/42/EC, Annex I, marked in the Annex to the EC Declaration of Incorporation as applicable and fulfilled at the time of placing
on the market.
The special technical documents were prepared following Annex VII part B. Upon justifiable request, these special technical documents can be forwarded
electronically to the respective national authorities. The authorized company for the compilation of the technical documentation is the manufacturer.
Designation:
Compact unit for use in centralized lubrication systems
Type / item number:
KFU2(6)-…
KFUS2-…
Year of manufacture:
See type plate
Furthermore, the following directives and standards were applied in the respective applicable areas:
2006/42/EC: Machinery Directive
2011/65/EU: RoHS II
2014/30/EU: Electromagnetic Compatibility
EN ISO 12100:2010
EN 60204-1:2018
EN 809+A1/AC:2010
EN IEC 63000:2018
EN IEC 61000-6-1:2007
EN IEC 61000-6-2:2005
EN IEC 61000-6-3:2012
EN IEC 61000-6-4:2011
The partly completed machinery must not be put into service until it has been established that the machinery into which it is to be incorporated is in
compliance with the provisions of the Machinery Directive 2006/42/EC and all other applicable Directives.
Berlin, 07.08.2021
Jürgen Kreutzkämper
Richard Lindemann
Manager, R&D
Germany
Manager, SE
Berlin
Manufacturer: SKF Lubrication Systems Germany GmbH, Motzener Strasse 35/37, 12277 Berlin, Germany
Original UK Declaration of incorporation according to the Supply of Machinery (Safety)
Regulations 2008 No. 1597 Annex II
The manufacturer hereby declares under sole responsibility that the partly completed machinery complies with the essential health and safety
requirements of UK legislation Supply of Machinery (Safety) Regulations 2008 No. 1597 Annex I, marked in the Annex to the EC Declaration of
Incorporation as applicable and fulfilled at the time of placing on the market.
The special technical documents were prepared following Annex VII part B. Upon justifiable request, these special technical documents can be forwarded
electronically to the respective national authorities. The authorized company for the compilation of the technical documentation is SKF (U.K.) Limited,
2 Canada Close, Banbury, Oxfordshire, OX16 2RT, GBR.
Designation:
Compact unit for use in centralized lubrication systems
Type / item number:
KFU2(6)-…
KFUS2-…
Year of manufacture:
See type plate
Furthermore, the following regulations and standards were applied in the respective applicable areas:
Supply of Machinery (Safety) Regulations 2008 No. 1597
•Electromagnetic Compatibility Ordinance 2016 No. 1091
•The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 No. 3032
EN ISO 12100:2010
EN 60204-1:2018
EN 809+A1/AC:2010
EN IEC 63000:2018
EN IEC 61000-6-1:2007
EN IEC 61000-6-2:2005
EN IEC 61000-6-3:2012
EN IEC 61000-6-4:2011
The partly completed machinery must not be put into service until it has been established that the machinery into which it is to be incorporated is in
compliance with the provisions of UK legislation Supply of Machinery (Safety) Regulations 2008 No. 1597 and all other applicable Directives.
Berlin, 07.08.2021
Jürgen Kreutzkämper
Richard Lindemann
Manager, R&D
Germany
Manager, SE
Berlin
Manufacturer: SKF Lubrication Systems Germany GmbH, Motzener Strasse 35/37, 12277 Berlin, Germany

3
Appendix to Declaration of Incorporation in accordance with 2006/42/EC, Annex II, No. 1 B
Description of the essential health and safety requirements according to 2006/42/EC, Annex I, which have been applied and fulfilled:
Table 1
Appendix to Declaration of Incorporation
No.:
Essential health and safety requirement
Applicable:
Fulfilled:
1.1
Principles
1.1.2
Principles of safety integration
Yes
Yes
1.1.3
Materials and products
Yes
Not completely
fulfilled
1)
1.1.5
Design of machinery to facilitate its handling
Yes
Yes
1.1.6
Ergonomics
Yes
Not completely
fulfilled
2)
1.2
Control systems
1.2.1
Safety and reliability of control systems
Yes
Yes
1.2.3
Starting
Yes
Yes
1.2.6
Failure of the power supply
Yes
Yes
1.3
Protection against mechanical hazards
1.3.1
Risk of loss of stability
Yes
Yes
1.3.2
Risk of break-up during operation
Yes
Not completely
fulfilled
3)
1.3.4
Risks due to surfaces, edges or angles
Yes
Yes
1.3.7
Risks related to moving parts
Yes
Yes
1.3.9
Risks of uncontrolled movements
Yes
Yes
1.5
Risks due to other hazards
1.5.1
Electricity supply
Yes
Yes
1.5.6
Fire
Yes
Yes
1.5.8
Noise
Yes
Yes
1.5.13
Emissions of hazardous materials and substances
Yes
Yes
1.5.15
Risk of slipping, tripping, or falling
Yes
Yes
1.6
Servicing
1.6.1
Machinery maintenance
Yes
Yes
1.6.2
Access to operating positions and servicing points
Yes
Not completely
fulfilled
4)
1.6.4
Operator interventions
Yes
Yes
1.7
Information
1.7.1
Information and warnings on the machinery
Yes
Yes
1.7.1.1
Information and information devices
Yes
Yes
1.7.2
Warning of residual risks
Yes
Yes
1.7.3
Marking of machinery
Yes
Yes
1.7.4
Operating instructions/assembly instructions
Yes
Yes
1.7.4.1
General principles for the drafting of operating instructions/assembly instructions
Yes
Yes
1.7.4.2
Contents of the operating instructions/assembly instructions
Yes
Yes
1.7.4.3
Sales literature
Yes
Yes
1) The product is designed for operation with non-hazardous media. The owner-operator must check whether the lubricant used has
certain hazardous effects (such as sensitization). Appropriate safety measures must be taken if needed.
2) The integrator must ensure that the pump is integrated into the machine in such a way that it can be filled and operated ergonomically.
3) The operator must protect the system against excessive pressure. For this purpose, the system must be provided with a pressure
limiting valve with suitable opening pressure.
4) The integrator must ensure that the pump is integrated into the machine in such a way that it can be operated without danger.

4
Masthead
Manufacturer
SKF Lubrication Systems Germany GmbH
Email: Lubrication-[email protected]
www.skf.com/lubrication
Berlin Plant
Motzener Strasse 35/37
12277 Berlin
Germany
Tel. [phone]
Fax [phone]
Walldorf Plant
Heinrich-Hertz-Strasse 2-8
69190 Walldorf, Germany
Germany
Tel.: [phone]
Fax: [phone]
Authorized local distributors
- Great Britain -
SKF (U.K.) Limited,
2 Canada Close, Banbury, Oxfordshire,
OX16 2RT, GBR.
- North America -
SKF Lubrication Business Unit
Lincoln Industrial
5148 North Hanley Road, St. Louis,
MO. 63134 USA
- South America -
SKF Argentina Pte. Roca 4145,
CP 2001 Rosario, Santa Fe
Warranty
The instructions contain no statements regarding the warranty
or liability for defects. That information can be found in our
General Terms of Payment and Delivery.
Training
We conduct detailed training in order to enable maximum
safety and efficiency. We recommend taking advantage of this
training. For further information, contact your authorized SKF
dealer or the manufacturer.

5
Table of contents
Masthead ...............................................................................................4
Table of contents..................................................................................5
Safety alerts, visual presentation, and layout.................................6
1. Safety instructions...........................................................................7
1.1 General safety instructions......................................................7
1.2 General electrical safety instructions.....................................7
1.3 General behaviour when handling the product ...................7
1.4 Intended use...............................................................................7
1.5 Persons authorized to use the product.................................7
1.6 Foreseeable misuse ..................................................................8
1.7 Referenced documents ............................................................8
1.8 Prohibition of certain activities ...............................................8
1.9 Painting plastic components and seals .................................8
1.10 Safety markings on the product ..........................................8
1.11 Note on the type plate ...........................................................8
1.12 Notes on CE marking .............................................................8
1.13 Note on UKCA marking..........................................................8
1.14 Note on ECE mark ..................................................................8
1.15 Note on EAC marking.............................................................8
1.16 Note on China RoHS mark....................................................8
1.17 Emergency shutdown ............................................................8
1.18 Assembly, maintenance, fault, repair..................................9
1.19 First start-up, daily start-up.................................................9
1.20 Residual risks...........................................................................9
2. Lubricants ...................................................................................... 11
2.1 General information............................................................... 11
2.2 Material compatibility ............................................................ 11
2.3 Temperature properties........................................................11
2.4 Aging of lubricants .................................................................11
2.5 Avoidance of faults and hazards.......................................... 11
2.6 Solid lubricants ....................................................................... 11
3. Overview, functional description................................................ 12
3.1 General..................................................................................... 12
3.2 Design.......................................................................................12
3.3 Control unit IG490+924........................................................12
3.4 Functional description ........................................................... 12
3.4.1 General......................................................................... 12
3.4.2 Total-loss lubrication systems................................. 12
3.4.3 Single-line lubrication systems with piston
metering devices................................................................... 13
3.4.4 Lubrication cycle sequence ...................................... 13
4. Technical data ............................................................................... 14
5. Delivery, returns, storage ........................................................... 15
5.1 Delivery ....................................................................................15
5.2 Return shipment.....................................................................15
5.3 Storage..................................................................................... 15
5.4 Storage temperature range ................................................. 15
5.5 Storage conditions for products filled with lubricant....... 15
5.5.1 Storage period up to 6 months............................... 15
5.5.2 Storage period between 6 and 18 months........... 15
5.5.3 Storage period more than 18 months................... 15
5.6 Declaration of decontamination .......................................... 15
6. Assembly ........................................................................................ 16
6.1 Setup and attachment........................................................... 16
6.2 Dimensions..............................................................................16
6.3 Electrical connection .............................................................. 16
6.3.1 Electric motor connection......................................... 16
6.3.2 Control unit IG490+924 ........................................... 17
6.4 Connection of the lubrication line........................................18
6.5 Laying the lubrication lines...................................................18
7. First start-up................................................................................. 20
8. Operation........................................................................................ 21
9. Maintenance and repair .............................................................. 22
10. Cleaning ....................................................................................... 23
10.1 Basics .....................................................................................23
10.2 Interior cleaning ...................................................................23
10.3 Exterior cleaning ..................................................................23
11. Faults, causes, and remedies................................................... 24
12. Repairs ......................................................................................... 27
13. Shutdown, disposal.................................................................... 27
13.1 Temporary shutdown..........................................................27
13.2 Permanent shutdown, disassembly ................................. 27
13.3 Disposal..................................................................................27
14. Spare parts.................................................................................. 27
15. Appendix ...................................................................................... 28
15.1 China RoHS Table................................................................ 28

6
Safety alerts, visual
presentation, and layout
While reading these instructions, you will encounter various
symbols, illustrations, and text layouts intended to help you
navigate and understand the instructions. Their meaning is
explained below.
Safety alerts:
Activities that present specific hazards (to life and limb or
possible damage to property) are indicated by safety alerts.
Always be sure to follow the instructions given in the safety
alerts.
<
DANGER
These safety alerts indicate an imminent danger.
Ignoring them will result in death or serious injury
<
WARNING
These safety alerts indicate potentially imminent
danger. Ignoring them could result in death or
serious injury
<
CAUTION
These safety alerts indicate potentially imminent
danger. Ignoring them could result in minor
injury
<
NOTICE
These safety alerts indicate a potentially harmful
situation. Ignoring them could result in damage to
property or malfunctions
Illustrations:
The illustrations used depict a specific product. For other
products, they may have the function of a diagram only. This
does not alter the basic workings and operation of the product.
Text layout:
•First-order bulleted lists: Items on a bulleted list start with
a solid black dot and an indent.
–Second-order bulleted lists: If there is a further listing of
subitems, the second-order bulleted list is used.
1 Legend: A legend explains the numbered contents of an
illustration, presented as a numbered list. Items in a legend
start with a number (with no dot) and an indent.
–Second-order legend: In some cases, the numbered
contents of an image represent more than just one object.
A second-order legend is then used.
1.Instruction steps: These indicate a chronological sequence
of instruction steps. The numbers of the steps are in bold and
are followed by a period. If a new activity follows, the
numbering starts again at “1.”
–Second-order instruction steps: In some cases, it is
necessary to divide up a step into a few substeps. A
sequence of second-order instruction steps is then used.

7
1. Safety instructions
1.1 General safety instructions
•Putting the products into operation or operating them without
having read the instructions is prohibited. The operator must
ensure that the instructions are read and understood by all
persons tasked with working on the product or who supervise
or instruct such persons. Retain the instructions for further
use.
•The product may only be used in awareness of the potential
dangers, in proper technical condition, and according to the
information in this manual.
•Any faults that could affect safety must be remedied
according to responsibility. The supervisor must be notified
immediately in case of malfunctions outside one's individual
scope of responsibility.
•Unauthorized modifications and changes can have an
unpredictable effect on safety and operation. Unauthorized
modifications and changes are therefore prohibited. Only
original SKF spare parts and SKF accessories may be used.
•Any unclear points regarding proper condition or correct
assembly/operation must be clarified. Operation is prohibited
until issues have been clarified.
•The components used must be suitable for the intended use
and the applicable operating conditions, e.g. max. operating
pressure and ambient temperature range, and must not be
subjected to torsion, shear, or bending.
1.2 General electrical safety instructions
•Electrical devices must be kept in proper condition. This must
be ensured by periodic inspections in accordance with the
relevant applicable standards and technical rules. The type,
frequency, and scope of the inspections must be determined
in accordance with the risk assessment to be carried out by
the operator. Work on electrical components may be
performed only by qualified electricians. Connect the electrical
power only in accordance with the valid terminal diagram and
in observance of the relevant regulations and the local
electrical supply conditions.
•Work on electrical components may be performed only in a
voltage-free state and using tools suitable for electrical work.
Do not touch cables or electrical components with wet or
moist hands.
•Fuses must not be bridged. Always replace defective fuses
with fuses of the same type.
•Ensure proper connection of the protective conductor for
products with protection class I. Observe the specified
enclosure rating.
•The operator must implement appropriate measures to
protect vulnerable electrical devices from the effects of
lightning during use. The electrical device is not furnished
with a grounding system for the dissipation of the respective
electric charge and does not have the voltage strength
necessary to withstand the effects of lightning.
1.3 General behaviour when handling the
product
•Familiarize yourself with the functions and operation of the
product. The specified assembly and operating steps and their
sequences must be observed.
•Keep unauthorized persons away.
•Wear personal protective equipment always.
•Precautionary operational measures and instructions for the
respective work must be observed.
•In addition to these Instructions, general statutory regulations
for accident prevention and environmental protection must be
observed.
•Precautionary operational measures and instructions for the
respective work must be observed. Uncertainty seriously
endangers safety.
•Safety-related protective and safety equipment must not be
removed, modified or affected otherwise in its function and is
to be checked at regular intervals for completeness and
function.
•If protective and safety equipment has to be dismantled, it
must be reassembled immediately after finishing the work,
and then checked for correct function.
•Remedy occurring faults in the frame of responsibilities.
Immediately inform your superior in the case of faults beyond
your competence.
•Never use parts of the centralized lubrication system or of the
machine as standing or climbing aids.
1.4 Intended use
Supply of lubricants.
The product is intended solely for installation in another
machine.
Use is only permitted within the scope of commercial or
economic activity by professional users, in compliance with the
specifications, technical data, and limits specified in this manual.
1.5 Persons authorized to use the
product
Operator
A person who is qualified by training, knowledge and experience
to carry out the functions and activities related to normal
operation. This includes avoiding possible hazards that may
arise during operation.
Specialist in electrics
Person with appropriate professional education, knowledge and
experience to detect and avoid the hazards that may arise from
electricity.
Specialist in mechanics
Person with appropriate professional education, knowledge and
experience to detect and avoid the hazards that may arise
during transport, installation, start-up, operation, maintenance,
repair and disassembly.

8
1.6 Foreseeable misuse
Any usage of the product other than as specified in this manual
is strictly prohibited. Particularly prohibited are:
•Use of non-specified consumables, contaminated lubricants,
or lubricants with air inclusions.
•Use of C3 versions in areas with aggressive, corrosive
substances (e.g., high salt load).
•Use of plastic parts in areas with high exposure to ozone, UV
light, or ionizing radiation.
•Use to supply, convey, or store hazardous substances and
mixtures as defined in the CLP Regulation (EC 1272/2008) or
GHS with acute oral, dermal, or inhalation toxicity or
substances and mixtures that are marked with hazard
pictograms GHS01-GHS06 and GHS08.
•Use to supply, convey, or store Group 1 fluids classified as
hazards as defined in the Pressure Equipment Directive
(2014/68/EU) Article 13 (1) a).
•Use to supply, convey, or store gases, liquefied gases,
dissolved gases, vapors, or fluids whose vapor pressure
exceeds normal atmospheric pressure (1013 mbar) by more
than 0.5 bar at their maximum permissible operating
temperature.
•Use in an explosion protection zone.
•Use without proper securing against excessively high
pressures, in the case of pressurized products.
•Use outside of the technical data and limits specified in this
manual.
1.7 Referenced documents
In addition to this manual, the following documents must be
observed by the respective target group:
•Company instructions and approval rules
If applicable:
•Safety data sheet of the lubricant used
•Project planning documents
•Supplementary information regarding special designs of the
pump. This you will find in the special system documentation.
•Instructions for other components for setting up the
centralized lubrication system.
1.8 Prohibition of certain activities
•Repairs or modifications to the drive
1.9 Painting plastic components and
seals
The painting of any plastic components and seals of the
products described is prohibited. Completely mask or remove
plastic components before painting the main machine.
1.10 Safety markings on the product
No safety markings on the product
NOTE
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 Note on the type plate
The type plate provides important data such as the type
designation, order number, and sometimes regulatory
characteristics. To avoid loss of this data in case the type plate
becomes illegible, it should be entered in the manual.
1.12 Notes on CE marking
CE marking is effected following the requirements
of the applied directives requiring a CE marking:
•2014/30/EC Electromagnetic Compatibility
•2011/65/EU Directive on the restriction of the use of certain
hazardous substances in electrical and electronic equipment
(RoHS II)
1.13 Note on UKCA marking
The UKCA conformity marking confirms the
product’s conformity with the applicable legal
provisions of Great Britain.
1.14 Note on ECE mark
The ECE test mark (E1) confirms that an ECE
type approval (components requiring approval on
motor vehicles) has been granted for a product
which bears this mark on its type plate.
1.15 Note on EAC marking
The EAC conformity marking confirms the
product’s conformity with the applicable legal
provisions of the Eurasian customs union.
1.16 Note on China RoHS mark
The China RoHS mark confirms that there is no
danger to persons or the environment from the
regulated substances contained within for the
intended period of use (year number shown in the
circle).
1.17 Emergency shutdown
This is done by a course of action to be defined by the operator.

9
1.18 Assembly, maintenance, fault,
repair
Prior to the start of this work, all relevant persons must be
notified of it. At a minimum, the following safety measures must
be taken before any work is done:
•Unauthorized persons must be kept away
•Mark and secure the work area
•Cover adjacent live parts
•Dry any wet, slippery surfaces or cover them appropriately
•Cover hot or cold surfaces appropriately
Where applicable:
•Depressurize
•Isolate, lock and tag out
•Check to ensure live voltage is no longer present
•Ground and short-circuit
The product should be protected as much as possible from
humidity, dust, and vibration, and should be installed so that it
is easily accessible. Ensure an adequate distance from sources
of heat or cold. Any visual monitoring devices present, such as
pressure gauges, min./max. markings, or oil level gauges must
be clearly visible. Observe the mounting position requirements.
Drill required holes only on non-critical, non-load-bearing
parts of the operator's infrastructure. Use existing holes where
possible. Avoid chafe points. Immobilize any moving or detached
parts during the work. Adhere to the specified torques.
If guards or safety devices need to be removed, they must be
reinstalled immediately following conclusion of work and then
checked for proper function.
Check new parts for compliance with the intended use before
using them.
Avoid mixing up or incorrectly assembling disassembled parts.
Label parts. Clean any dirty parts.
1.19 First start-up, daily start-up
Ensure that:
•All safety devices 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
1.20 Residual risks
Table 2
Residual risks
Residual risk
Possible in lifecycle
Avoidance / Remedy
Parts tipping/falling during transport,
e.g., on an incline.
A
Secure parts against tipping/falling during transport (e.g.,
using belts, straps, ropes, etc.).
Falling of hoisted parts/tools.
B
Nobody is allowed to be present below hoisted parts.
Unauthorized persons must be kept away. Secure
hoisted parts using suitable lifting gear (e.g., using
belts, straps, ropes, etc.).
Falling of parts inadequately secured to
the machine.
B
Mount the product only on machine parts with sufficient
load-carrying capacities. Be mindful of the weight.
Comply with the specified torques. If no torques are
specified, use those specified for thread size 8.8 
See
literature from the screw manufacturer.
Personnel slipping due to floor
contamination with spilled or leaked
lubricants.
B
C
E
G
H
K
•Exercise caution when connecting hydraulic
connections on the product.
•Promptly apply suitable binding agents and then
remove the spilled or leaked lubricant.
•Follow operational instructions for handling the
lubricants and contaminated parts.
Tearing or damage to lines when
installed on moving machine
components.
B
Installing the pump on moving machine components
should be avoided whenever possible.
In cases where mounting the pump in this way
cannot be avoided, flexible hose lines must be used.
Lubricant spraying out due to faulty
component fitting, or incorrect
connection of lines.
B
C
•Tighten all components securely or using the specified
torques.
•Use hydraulic screw unions and lines suitable for the
indicated pressures, and check them for proper
connection and for damage prior to first start-up.

10
Table 2
Residual risks
Residual risk
Possible in lifecycle
Avoidance / Remedy
Strong heating of the motor, or motor
fault, due to jamming.
G
Switch off the pump. Let parts cool off; remedy the cause.
Environmental contamination by
lubricants and wetted parts.
K
Dispose of contaminated parts according to the applicable
legal/company rules.
Personal injury, property damage due to
spilled, leaked lubricant.
B
C
D
F
G
H
K
Be careful when connecting or disconnecting the
lubricant lines. Use only hydraulic screw unions and
lubrication lines suitable for the specified pressure. Do
not mount lubrication lines on moving parts or chafe
points. If this cannot be avoided, use anti-kink coils
and/or conduits.
Fire hazard or damage to the pump
from operation with damaged electrical
components, such as power cables and
plugs.
B
C
D
E
F
G
H
Inspect electrical components for damage prior to initial
use and then at regular intervals. Do not install cables
on moving parts or chafe points. If this cannot be
avoided, use anti-kink coils and/or conduits.
Loss of electrical protective function
due to incorrect assembly of the
electrical components after a repair.
G
An electrical safety check in accordance with ISO
60204-1 must be performed after the replacement of
electrical components.
Lifecycle phases: A = Transport, B = Assembly, C = First start-up, D = Operation, E = Cleaning, F = Maintenance, G = Malfunction, repair, H
= Shutdown, K = Disposal

11
2. Lubricants
2.1 General information
Lubricants are selected specifically for the relevant application.
The manufacturer or operator of the machine should ideally
make the selection in consultation with the supplier of the
lubricant. If you have no or little experience in selecting
lubricants for lubrication systems, please contact us. We would
be happy to assist you in selecting suitable lubricants and
components to build a lubrication system optimized for your
particular application. Consider the following points when
selecting/using lubricants. This will spare you potential
downtime and damage to the machine or lubrication system.
2.2 Material compatibility
The lubricants must generally be compatible with the following
materials:
•Plastics: ABS, CR, FPM, NBR, NR, PA, PET, PMMA, POM, PP,
PS, PTFE, PU, PUR
•Metals: steel, gray cast iron, brass, copper, aluminum
2.3 Temperature properties
The lubricant used must be suitable for the specific ambient
temperature of the product. The viscosity approved for proper
functioning must neither be exceeded at low temperatures nor
fall too low at high temperatures. For the approved viscosity,
see the “Technical data” chapter.
2.4 Aging of lubricants
Based on past experience with the lubricant used, checks should
be conducted at regular intervals defined by the operator, to
determine whether the lubricant needs to be replaced due to
aging processes (oil separation). In case of doubt regarding the
continued suitability of the lubricant, it must be replaced before
the system is started up again. If you do not yet have any
experience with the lubricant used, we recommend conducting
a check after just one week.
2.5 Avoidance of faults and hazards
To avoid faults and hazards, please observe the following:
•When handling lubricants, observe the relevant safety data
sheet (SDS) and any hazard labeling on the packaging.
•Due to the large number of additives, some lubricants that
meet the pumpability requirements specified in the manual
are not suitable for use in centralized lubrication systems.
•Whenever possible, always use SKF lubrication greases. They
are ideal for use in lubrication systems.
•Do not mix lubricants. This can have unpredictable effects on
the properties and usability of the lubricant.
•Use lubricants containing solid lubricants only after technical
consultation with SKF.
• The lubricant’s ignition temperature has to be at least
50 kelvin above the maximum surface temperature of the
components.
2.6 Solid lubricants
Solid lubricants may only be used after prior consultation with
SKF. When solid lubricants are used in lubrication systems, the
following rules generally apply:
Graphite:
•Maximum graphite content 8%
•Maximum grain size 25 µm (preferably in lamellar form)
MoS2:
•Maximum MoS2 content 5%
•Maximum grain size 15 µm
Copper:
•Lubricants containing copper are known to lead to coatings
forming on pistons, bore holes, and mating surfaces. This can
result in blockages in the centralized lubrication system.
Calcium carbonate:
•Lubricants containing calcium carbonate are known to lead to
very heavy wear on pistons, bore holes, and mating surfaces.
Calcium hydroxide:
•Lubricants containing calcium hydroxide are known to harden
considerably over time, which can lead to failure of the
centralized lubrication system.
PTFE, zinc, and aluminum:
•For these solid lubricants, it is not yet possible to define any
limit values for use in lubrication systems on the basis of
existing knowledge and practical experience.

12
3. Overview, functional
description
3.1 General
Compact units of the KFU(S)… series are reservoir units with
electrically driven gear pumps that contain all hydraulic and
electrical components required for the operation of a piston
metering system. Thanks to their compact construction,
compact units can be used to set up piston metering systems to
lubricate commercial vehicles very easily, with little installation
work required. Compact units of the KFU(S)… series come in a
standard version designed for use with fluid grease of NLGI
Grades 00 and 000. Special designs for oil and for industrial
machine lubrication are available on request.
3.2 Design
In the basic design, compact units of the KFU(S)… series include
an electrically driven gear pump (supplied by 12 V or 24 V DC
power), a lubricant reservoir made of plastic (3 or 6 liter rated
capacity), plus a pressure-relief valve and pressure limiting
valve which are mounted inside the compact unit. A filler
coupling with built-in strainer is provided for filling the lubricant
reservoir. This filler coupling is accessed by removing the cover
cap of the compact unit. Special designs with a filling cover are
available on request. Optionally, a lubricant level switch can also
be fitted for monitoring of the minimum level.
The plastic reservoirs consist of transparent plastic (3 and
6 liter rated capacity) that allows visual inspection of the fill
level. Due to the components built into the reservoir, only a
maximum of 80 % of the theoretical reservoir capacity (rated
capacity) can be used.
The pressure-relief valve mounted in the compact unit is
required in order to relieve the system pressure built up during
a lubricating cycle to a residual pressure of ≤ 0.5 bar once the
motor is turned off. This is required for the operation of the
piston metering devices.
The pressure limiting valve mounted in the compact unit is
required to limit the maximum permissible system pressure in
the lubrication system. The pressure limiting valve in the
KFU(S)… series compact unit is set to a maximum system
pressure of 38 bar.
Compact units of the KFU(S)… are available in model designs
with or without a control unit. In the model design without a
control unit (for commercial vehicles and industry), the compact
unit (and thereby the lubrication interval) is controlled by the
control unit of the commercial vehicle/machine that the compact
unit is mounted on. In the model design with a control unit
(commercial vehicles only), the compact unit is equipped with an
electronic control unit that controls the compact unit (and
thereby the lubrication interval).
In the model design without a control unit, the KFU(S)… series
compact units are connected to the 12 V or 24 V DC supply
voltage via a 2-pin circular connector, M24 x 1, protected
against reverse polarity (with positive and negative pins). In the
model design with a control unit, the supply voltage is
connected via a 4-pin circular connector DIN 72585-A1-4.1-
Ag/K1 (only pins 1 and 2 are used, pins 3 and 4 are not used).
In both model designs, optional monitoring devices, such as a
float switch, are electrically connected directly via the electrical
connection of the monitoring device.
Depending on the model design, the compact unit may be
equipped with a pushbutton under the cover cap. The
pushbutton is used for manually performing an intermediate
lubrication.
Depending on the model design, the hydraulic pressure to the
main lubricant line is connected either via a plug connection for
10 mm diameter tubes or by a threaded port for solderless
fitting of 10 mm diameter tubes. The port for the solderless
fitting has a M16 x 1.5 thread.
For reservoir ventilation and overfill release, there is an
overfill release tube on the left side of the compact unit.
The standard version is designed for use with fluid greases of
NLGI Grades 00 and 000 as the lubricant. Special designs for oil
are available on request.
3.3 Control unit IG490+924
In the model design of the KFU(S)… series compact units with a
control unit, the control unit used is the IG490+924 (24V DC).
The IG490+924 control unit is designed as a circuit board,
installed under a separate cover cap on the compact unit. The
IG490+924 control unit acts as a timer for four different pause
times (6, 9, 11, and 20 hours). The lubrication interval (the
pump run time) is permanently set to 160 seconds. The
different pause times are set by positioning two jumpers directly
on the circuit board of the control unit. The factory setting for
the pause time is 9 hours.
3.4 Functional description
3.4.1 General
Compact units of the KFU(S)… series are generally used for
single-line systems with piston metering devices. Single-line
systems with piston metering devices are total-loss lubrication
systems.
3.4.2 Total-loss lubrication systems
Total-loss lubrication systems feed clean lubricant (in this
instance: oil or fluid grease) to one or more lubrication points at
specific intervals during the lubrication run time (also called the
contact time, or pump run time). The quantity of lubricant fed is
measured so that the lubrication points are supplied with
adequate lubricant during the total-loss lubrication system's
pause time to maintain a lubricant film between the friction
partners. During operation, the lubricant fed is partially
consumed by aging, evaporation, oil separation, and leakage. An
interval-controlled supply of lubricant to the lubrication point is
required in order to ensure that the lubrication point receives
adequate lubrication. Such systems are referred to as
intermittently operated lubrication systems.
A total-loss lubrication system cannot be used to cool the
lubrication points.

13
3.4.3 Single-line lubrication systems with
piston metering devices
Single-line systems with piston metering devices generally
consist of a reservoir unit (in this instance a compact unit),
piston metering devices, and lubrication lines. The pressure
limiting valve and pressure-relief valve required for operation of
the lubrication system are mounted in the compact unit.
If pressure losses greater than 10 bar are expected in the
lubrication system—due to expansion of the lubrication system,
lubricant viscosity, or low ambient temperatures, for example—
a pressure switch should be installed to monitor the lubrication
system, mounted at the end of the main lubricant line if
possible. The pressure switch monitors whether the required
pressure build-up occurs in the lubrication system during the
pump run time.
Pressure in the main lubricant line must be relieved after the
pump is switched off in order to ensure proper functioning of
the piston distributors. This is performed by the pressure relief
valve mounted in the compact unit.
3.4.4 Lubrication cycle sequence
The sequence of a lubrication cycle depends on the type of
piston metering devices in use. Piston metering devices are
differentiated into prelubrication metering devices and
relubrication metering devices. Piston metering devices
designed as prelubrication metering devices deliver the metered
quantity of lubricant at the same time that pressure is built up
in the lubrication system. Piston metering devices designed as
relubrication metering devices supply the metered quantity of
lubricant after the pressure relief procedure in the lubrication
system.
3.4.4.1 Lubrication cycle of prelubrication metering
device
When the electric motor is switched on, the lubricant is drawn
out of the lubricant reservoir by the gear pump and fed through
the main lubricant line to the prelubrication metering devices,
via the pressure-relief valve and the pressure limiting valve. The
pressure built up in the main lubricant line is used to meter the
lubricant separately for each lubrication point, and to feed it
through the feed line to the consuming point. When the electric
motor is switched off, the pressure is relieved in the main
lubricant line to a residual pressure of ≤ 0.5 bar. In the process,
the lubricant is moved into the storage chamber of the
prelubrication metering device. The lubrication system is ready
for the next lubrication cycle.
3.4.4.2 Lubrication cycle of relubrication metering
device
When the electric motor is switched on, the lubricant is drawn
out of the lubricant reservoir by the gear pump and fed through
the main lubricant line to the relubrication metering devices, via
the pressure-relief valve and the pressure limiting valve. The
pressure built up in the main lubricant line feeds the lubricant
into the storage chamber of the relubrication metering devices.
When the electric motor is switched off, the pressure is relieved
in the main lubricant line to a residual pressure of ≤ 0.5 bar. In
this process, the lubricant is metered within the relubrication
metering device and dispensed to the lubrication point via the
feed line (for a relubrication effect). When the lubricant has
been completely expelled to the lubrication point, the lubrication
system is ready for the next lubrication cycle.

14
4. Technical data
Table 3
Technical data
Designation
KFU2-40+912/924
KFU6-20+912/924
KFUS2-64+924
KFUS2-60-…+924
General
Delivery rate 1.)
0.14 l/min
0.14 l/min
0.14 l/min
0.14 l/min
Connected load, max.
80 cm3
80 cm3
80 cm3
80 cm3
Ambient temperature
-25 to +75°C
-25 to +75°C
-25 to +75°C
-25 to +75°C
Rated capacity of reservoir
3 liters
6 liters
3 liters
3 liters
Reservoir material
Plastic
Plastic
Plastic
Plastic
Pressure limiting valve
38 bar
38 bar
38 bar
38 bar
Pressure-relief valve
Included
Included
Included
Included
Enclosure rating
IP5K9K
IP5K9K
IP5K9K
IP5K9K
Weight
Approx. 5.5 kg
Approx. 7.5 kg
Approx. 5.5 kg
Approx. 5.5 kg
NLGI grade
000.00
000.00
000.00
000.00
Motor (type)
Brush motor
Brush motor
Brush motor
Brush motor
Rated voltage
12 / 24 V DC
12 / 24 V DC
24 V DC
24 V DC
Rated current
3,6 / 1,8 A
3,6 / 1,8 A
1.8 A
1.8 A
Current, max.
5,3 / 2,65 A
5,3 / 2,65 A
2.65 A
2.65 A
Starting current
21 / 10,6 A
21 / 10,6 A
10.6 A
10.6 A
Fuse protection required
16 / 8 A
16 / 8 A
/8 A
/8 A
Rated speed
1940 rpm
1940 rpm
1940 rpm
1940 rpm
Service life
3000 h
3000 h
3000 h
3000 h
Electrical connection
Circular connector
Circular connector
Circular connector
Circular connector
Type
-
-
DIN72585-A1-4.1-
Ag/K1
DIN72585-A1-4.1-
Ag/K1
Number of pins
2-pin
2-pin
4-pin
4-pin
Connection thread
M24 x 1
M24 x 1
Bayonet
Bayonet
Reverse voltage protection
Yes
Yes
Yes
Yes
Control unit
None
None
IG490+924
IG490+924
Pause time, adjustable
-
-
6, 9 2.), 11, 20 h
6, 9 2.), 11, 20 h
Lubrication time, fixed
-
-
160 s
160 s
Pushbutton for manual
intermediate lubrication
No
No
Yes
Yes
Lubrication line connection
solderless tube union
solderless tube union
Quick release fittings
Quick release fittings
Pipe diameter
10 mm
10 mm
10 mm
10 mm
Connection thread
M16 x 1.5
M16 x 1.5
None
None
1.) With back pressure of p = 38 bar and ambient temperature of 25℃
2.) Factory setting

15
5. Delivery, returns, storage
5.1 Delivery
After receipt of the shipment, it must be inspected for any
shipping damage and for completeness according to the
shipping documents. Immediately inform the transport carrier
of any shipping damage. The packaging material must be
preserved until any discrepancies are resolved.
5.2 Return shipment
Before return shipment, all contaminated parts must be
cleaned. If this is not possible or practical, e.g. if it would impede
fault detection in the case of complaints, the medium used must
always be specified. In the case of products contaminated with
hazardous substances as defined by GHS or CLP regulations,
the safety data sheet (SDS) must be sent with the product and
the packaging must be labelled in accordance with GHS/CLP.
There are no restrictions for land, air, or sea transport. The
choice of packaging should be based on the specific product and
the stresses to be expected during transport (e.g., necessary
anti-corrosion measures in the case of shipment by sea). In the
case of wooden packaging, the applicable import regulations
and the IPPC standards must be observed. Required certificates
must be included in the shipping documents. The following
information, as a minimum, must be marked on the packaging
of return shipments.
Fig. 1
Marking of return shipments
5.3 Storage
The following conditions apply to storage:
•Dry, low-dust, vibration-free, in closed rooms
•No corrosive, aggressive substances at the storage location
(e.g., UV rays, ozone)
•Protected against animals (insects, rodents)
•If possible, keep in the original product packaging
•Protected from nearby sources of heat or cold
•In the case of large temperature fluctuations or high humidity,
take appropriate measures (e.g., heating) to prevent the
condensation of water
•Before usage, check products for damage that may have
occurred during storage. This applies in particular to parts
made of plastic (due to embrittlement).
5.4 Storage temperature range
For parts not filled with lubricant, the permitted storage
temperature is the same as the permitted ambient temperature
range (see “Technical data”).
5.5 Storage conditions for products filled
with lubricant
For products filled with lubricant, the permitted storage
temperature range is:
minimum
+ 5 °C
[+41 °F]
maximum
+ 35 °C
[+95 °F]
If the storage temperature range is not maintained, the
following steps for replacing the lubricant may not lead to the
desired result under certain circumstances.
5.5.1 Storage period up to 6 months
Filled products can be used without implementing additional
measures.
5.5.2 Storage period between 6 and 18
months
Pump:
•Connect the pump to a power source
•Switch on the pump and run it until lubricant comes out of
every outlet without air bubbles
•Disconnect the pump from the power source
•Remove and dispose of the lubricant that came out
Lines:
•Remove pre-installed lines
• Ensure that both ends of the line are open
• Fill the lines completely with fresh lubricant
Metering devices:
NOTE
Due to the large number of different metering devices, no
universally valid statement can be made regarding the
removal of the old lubricant and correct bleeding after filling
with new lubricant. The instructions can be found in the
technical documentation
of the specific metering device
used.
5.5.3 Storage period more than 18 months
To prevent faults, the manufacturer should be consulted before
start-up. The basic procedure for removal of the old lubrication
filling corresponds to that for storage periods between 6 and
18 months.
5.6 Declaration of decontamination
If the product came in contact with harmful substances, make
sure to thoroughly clean the product before returning it to us.
Due to statutory provisions and for the safety of our employees
and operation facilities we further need a fully completed and
signed “Declaration of decontamination”.

16
6. Assembly
6.1 Setup and attachment
WARNING
Pressure
Damage and injury from working on
pressurized system components
Centralized lubrication systems are pressurized
during operation. Centralized lubrication systems
must therefore be depressurized before starting
assembly, maintenance, or repair work, or any
system modifications or system repairs.
The compact unit should be protected from humidity and
vibration and should be mounted so that it is easily accessible,
allowing all further installation work to be done without
difficulty. Ensure that there is adequate air circulation to
prevent excessive heating of the compact unit. For the
maximum permissible ambient temperature, see "Technical
data."
NOTE
For the product-specific technical data on the compact unit
and the control unit, see the relevant documentation. If the
documentation is not present, you can request it directly
from SKF Lubrication Systems Germany GmbH.
The compact unit must be mounted vertically in accordance
with the specifications of the documentation.
Create assembly holes for installation of the feed pump unit on
a flange or base, as specified in section .
NOTICE
Damage due to incorrect installation
During installation and especially when drilling,
always pay attention to the following:
•
Existing supply lines must not be damaged by
the installation work.
•
Other units must not be damaged by the
installation work.
•
The compact unit must not be installed within
range of moving parts.
•
The compact unit must be installed at an
adequate distance from sources of heat.
•
Maintain safety clearances and comply with
local regulations for installation and accident
prevention.
•
Use existing holes on the
vehicle frame or other
vehicle parts.
•
Bridge large holes using body washers.
•
Bear in mind the steering lock angle, spring
action, and possible chafe points during
installation.
NOTE
Any change to a motorized vehicle, especially the
installation of additional equipment such as centralized
lubrication systems, must be checked and approved by the
relevant technical authorities in the operator country. Non
-
compliance can void the license to operate the vehicle.
6.2 Dimensions
Compact units of the KFU(S)… series are designed for wall
mounting (industrial design) or installation on a vehicle
(commercial vehicle design). They are attached to the intended
mounting location using appropriate fastening materials (e.g.,
bolts, washers, and nuts).
For the dimensions and location of the mounting holes, see
the documentation of the compact unit. If no documentation is
available, the dimensions and location of the fixing holes for
mounting the unit can be determined by taking measurements.
6.3 Electrical connection
6.3.1 Electric motor connection
Compact units of the KFU(S)… series are driven by direct-
current motors. The direct-current motors used are designed
for a voltage of 12 VDC or 24 VDC. The model design of the
KFU(S)… series compact unit with control unit is designed only
for 24 VDC.
WARNING
Electric shock
Disconnect the product from the power
suppl
y before any work on electrical
components
Electrical connections for the compact unit may
only be established by qualified and trained
personnel authorized to do so by the operator.
The local electrical operating conditions and local
regulations (e.g., DIN, VDE) must be observed.
Serious injury or death and property damage may
result from improperly connected compact units.

17
NOTICE
Damage due to faulty connection
Faulty connection of the compact unit can
result in damage
•Connect the compact unit according to the
connector pin assignment
•
Observe the local electrical operating conditions
and local regulations (e.g., DIN, VDE)
•
The available line voltage (supply voltage) must
match the specifications on the rating plate of
the motor or the rating plate of the electrical
components
•
Check the fuse protection of the electrical
circuit. Use only fuses with the prescribed
amperage.
In the model design of the compact unit without a control unit
(12 VDC and 24 VDC), the power to the electric motor is
connected directly via the 2-pin connector with reverse polarity
protection (positive and negative pins) (Fig. 2).
In the model design with control unit (24 VDC only), the
electric motor is connected to the electronic control unit
IG490+924. The power is connected via the 4-pin circular
connector DIN 72585-A1-4.1-Ag/K1 (Fig. 3). Only pins 1 and 2
are used. Pins 3 and 4 are not used.
Fig. 2
2-pin connector
Table 4
Connector pin assignment (Fig. 2)
Pin No.
Function
+
+ 15
Positive potential
-
- 31
Negative potential
Fig. 3
4-pin connector
Table 5
Connector pin assignment (Fig. 3)
Pin No.
Function
1
+ 15
Positive potential
2
- 31
Negative potential
3
Not assigned
-
4
Not assigned
-
Be sure to connect the electrical power so as to guarantee a
continuously safe electrical connection (no protruding wire
ends). Use the assigned cable end fittings (e.g., cable lugs, wire
end ferrules). Select power cables conforming to
DIN VDE 0100, taking into account the rated current and the
conditions of the specific system (e.g., ambient temperature,
type of routing etc. in accordance with DIN VDE 0298 and
IEC / EN 60204-1).
Details regarding electrical connection of the compact unit to
the power supply, especially the connector pin assignment, can
also be found in the documentation for the compact unit.
To find out the electrical characteristics of the motor, such as
rated voltage and rated current, consult the electric motor's
rating plate or the documentation for the compact unit.
6.3.2 Control unit IG490+924
In the model design of the KFU(S)… series compact units with a
control unit, the control unit IG490+924 (24 VDC) is used. The
IG490+924 control unit works autonomously and performs the
control of the lubrication interval. It is designed as a circuit
board, installed under a separate cover cap on the compact
unit. The IG490+924 control unit acts as a timer for four
different pause times (6, 9, 11, and 20 hours). The lubrication
interval (the pump run time) is permanently set to 160 seconds.
The different pause times are set by positioning two jumpers
directly on the circuit board of the control unit. The factory
setting for the pause time is 9 hours.

18
Fig. 4
Structure of the circuit board
Fig. 5
Pause time by jumpers (factory setting 9 h)
The control unit is connected to the 24 VDC power supply by a
4-pin connector designed according to Fig. 3.
Details regarding electrical connection of the control unit can
also be found in the documentation for the compact unit.
6.4 Connection of the lubrication line
The lubrication line must be connected to the lubrication unit in
such a way that no forces can be transferred to the installed
lubrication unit (stress-free connection).
NOTICE
Damage due to incorrect selection of
fittings
During assembly, always pay attention to the
following:
•
The fittings used to connect the lubrication line
should be rated for the maximum operating
pressure of the lubrication unit.
•
If they are not, the lubrication line system needs
to be protected from excessive pressure by
means of an overpressure valve.
For operating pressures up to 45 bar, as can occur especially in
single-line piston metering systems, SKF fittings for solderless
pipe unions can be used (double or single cone rings). If using
fittings from other manufacturers, pay careful attention to the
assembly instructions and technical specifications provided by
the manufacturer.
NOTE
Only for model designs of the KFU(S)… series compact
units
that are fitted with quick couplings for 10 mm
diameter tubes
:
•
When inserting the main lubricant line into the quick
coupling, you should clearly feel it click into a series of
two locking positions.
6.5 Laying the lubrication lines
When routing the main lubricant lines and the feed lines,
observe the following instructions in order to ensure that the
entire centralized lubrication system functions smoothly.
The main lubricant line must be dimensioned in accordance
with the maximum pressure occurring in the lubrication unit
used and the delivery volume of that lubrication unit. If possible,
the main lubricant line should rise upward from the lubrication
unit and be ventable at the highest point on the lubrication line
system.
Metering devices at the end of the main lubricant line must be
installed such that the outlets of the metering devices point
upwards. If the system configuration requires that the lubricant
metering devices be arranged below the main lubricant line,
they should not be placed at the end of the main lubricant line.
The pipes, tubes, shutoff valves, directional control valves,
fittings, etc. that will be used must be designed for the
maximum operating pressure of the lubrication unit, the
permissible temperatures, and the lubricants that will be fed.
The pressure limiting valve (38 bar) installed in the unit protects
the lubrication system from excess pressure.
All components of the lubrication line system such as pipes,
hoses, shut-off valves, directional control valves, fittings, etc.
must be carefully cleaned before assembly. No seals in the
lubrication line system should protrude inwards in a way that
disrupts the flow of the lubricant and could allow contaminants
to enter the lubrication line system.
Lubrication lines should always be arranged so that air
inclusions cannot form anywhere. Avoid changes in the cross-

19
section of the lubrication line from small to large cross-sections
in the flow direction of the lubricant. When the cross-section
does change, the transition should be gentle.
The flow of lubricant in the lubrication lines should not be
impeded by sharp bends, angle valves, or flap valves.
Unavoidable changes in the cross-section in lubrication lines
must have smooth transitions. Sudden changes of direction
should be avoided if possible.
CAUTION
Lubricant coming out
Risk of slipping and injury
Centralized lubrication systems and lubrication
lines must always be free of leaks. Leaking
lubricant is hazardous due to the risk of slipping
and injury. Beware of any lubricant leaking out
during assembly, operation, maintenance, or
repair of centralized
lubrication systems. Leaks
must be sealed off without delay.
NOTICE
Lubricant coming out
Risk of contamination of waterways and soil
Lubrication lines must always be free of leaks.
Lubricants can contaminate soil and
waterways.
Lubricants must be used and disposed of
properly. Observe the local regulations and laws
regarding the disposal of lubricants.
NOTE
Follow the safety instructions on the lubricant's safety data
sheet. The safety data sheet for a
lubricant can be
requested from the lubricant manufacturer.

20
7. First start-up
NOTICE
Damage from non-approved lubricant
Only lubricants approved for the product may be
used. Unsuitable lubricants can lead to failure of
the product and to damage.
NOTICE
Damage from mixing lubricants
Different lubricants must not be mixed together.
Doing so can cause damage and require extensive
cleaning of the product/centralized lubrication
system. It is recommended that an indication of
the lubricant in use be attached to the lubricant
reservoir in
order to prevent accidental mixing of
lubricants.
Before the compact unit is put into operation for the first time,
all electrical, hydraulic, and (if present) pneumatic connections
must be inspected.
The lubricant may only be fed without bubbles. The lubricant
reservoir, if present, must be filled with clean lubricant without
introducing bubbles. The compact unit should then be run until
lubricant without bubbles is discharged at all lubrication points.
The process of bleeding the air from the centralized lubrication
system can be facilitated by:
•Opening the ends of the pipes until lubricant without bubbles
is discharged there
•Filling long pipe sections before connecting to the lubrication
points
Air inclusions in the lubricant adversely affect the function of the
devices and impair the reliability of lubricant delivery, which can
result in damage to the bearings that are being lubricated.
To fill the compact units of the KFU(S)… series, a coupling
socket is required.
The coupling socket is available from
SKF Lubrication Systems Germany GmbH under the following
order number:
•995-001-500