SKF ETP-924 Series User manual

Dosing Pump with Lubricant
Cartridge
For use in centralized lubrication systems
Product line:
ETPx-...+924
ETPxWZ-…+924
Owner’s Manual - Containing Installation,
Operation and Maintenance Instructions
(Original installation instructions in accordance with EC-
Machinery Directive 2006/42/EC)
Version 01
WARNING:
Read this owner's manual before installing, operating or maintaining the product. Failure to follow the
instructions and safety precautions in this owner’s manual could result in serious injury, death, or property
damage. Keep for future reference.

Masthead page 2 EN
Masthead
This owner’s manual - containing installation,
operation and maintenance instructions complies
with EC-Machinery Directive 2006/42/EC and is an
integral part of the described product. It must be
kept for future use.
This owner’s manual - containing installation,
operation and maintenance instructions was
created in accordance with the valid standards and
regulations on documentation, VDI 4500 and EN
292.
© SKF Lubrication Systems Germany AG
This documentation is protected by copyright. The
photomechanical reproduction, copying, and distri-
bution of this documentation or parts thereof by
means of processes such as data processing, data
carriers, and data networks is strictly prohibited
without the express permission of SKF Lubrication
Systems Germany AG.
SKF Lubrication Systems Germany AG reserves the
right to make content and technical changes.
Service
If you have technical queries, please contact one of
the following plants:
SKF Lubrication Systems Germany AG
Plant Berlin
Motzener Straße 35/37
12277 Berlin
Germany
Tel. [phone]
Fax [phone]
Plant Hockenheim
2. Industriestraße 4
68766 Hockenheim
Germany
Tel. [phone]
Fax [phone]
[email protected]
www.skf.com/schmierung

Table of contents page 3 EN
Table of contents
Owner’s Manual - Containing Installation,
Operation and Maintenance Instructions
(Original installation instructions in accordance with
EC-Machinery Directive 2006/42/EC)
Masthead 2
Service 2
Table of contents 3
Information concerning the EC Declaration
of Conformity and the EC Declaration of
Incorporation 4
Safety information in owner’s manual 5
Meaning of symbols and corresponding
information 5
1. Safety information 6
1.1 Intended use 6
1.2 Authorized personnel 6
1.3 Danger relating to electric current 7
1.4 Danger relating to system pressure 7
1.5 Hazard from spring preload 7
1.6 Warranty and liability 7
2. Lubricants 8
2.1 General information 8
2.2 Selection of lubricants 8
2.3 Approved lubricants 9
2.4 Lubricants and the environment 9
2.5 Danger relating to lubricants 9
3. Design and function 10
3.1 General information 10
3.2 Design 10
3.3 Function 10
4. Installation instructions 14
4.1 Positioning and mounting 14
4.2 Mounting dimensions 15
4.3 Electrical connection 16
4.4 Note about programming the
monitoring system 17
4.5 Lubrication line connection 17
4.6 Laying of lubrication line 18
5. Transport, delivery and storage 19
5.1 Transport 19
5.2 Delivery 19
5.3 Storage 19
5.3.1 Storage of lubrication units 19
5.3.2 Storage of electronic and
electrical devices 19
5.3.3 Storage - general information 19
6. Operation 20
6.1 General information 20
6.2 Startup 20
6.3 Replacing the lubricant cartridge 21
6.4 Venting the dosing pump 21
7. Shutdown 22
7.1 Temporary shutdown 22
7.2 Permanent shutdown 22
8. Maintenance 23
9. Faults 24
10. Technical data 26

Information concerning the EC Declaration of Conformity and the EC Declaration of Incorporation page 4 EN
Information concerning the EC Declaration of Conformity and the EC Declaration of
Incorporation
For the product(s) designated below:
Dosing Pump with Lubricant Cartridge
Product line:
ETPx-...+924
ETPxWZ-...+924
SKF herewith certifies that it conforms to the perti-
nent safety requirements set forth in the following
Council Directive(s) for the harmonisation of the
laws of the Member States...
)Machinery Directive 2006/42/EC
)Electromagnetic compatibility 2004/108/EC
Notes:
(a) This declaration certifies conformity with the
aforementioned directive(s), but does not
contain any assurance of properties.
(b) The safety instructions in the owner’s manual
must be observed.
(c) The certified product must not be started up
until it is confirmed that the equipment, ma-
chinery, vehicle or the like in which the product
was installed meets the provisions and re-
quirements of the national directives to be ap-
plied. This is in particular important for the
implementation of the Use of Work Directive.
(d) Operation of the products on non-standard
main voltage as well as nonobservance of in-
stallation instructions can affect the EMC
properties and electrical safety.
SKF further declares that the above mentioned
product:
)is meant for integration into a machinery / for
connection to other machinery according to
the EC-Machinery Directive 2006/42/EC,
Appendix II Part B. Starting up the product is
not permissible until it is assured that the
machinery, vehicle or the like in which the
product was installed meets the provisions
and requirements of the regulations set forth
in the EC Directive 2006/42/EC.
)with reference to the EC Directive 97/23/EC
concerning apparatus subjected to pres-
sure, this product must only be used as in-
tended and according to the Owner’s manual.
Especially observe the following:
Products of SKF Lubrication Systems Germany
AG must not be used in conjunction with fluids,
group I (hazardous fluids), according to the
definition of article 2 paragraph 2 of the Direc-
tive 67/548/EC dtd. 27th June, 1967; and are
not approved for application with such fluids.
None of the products manufactured by SKF
Lubrication Systems Germany AG can be used
with gases, liquefied gases, gases dissolved
under pressure, steams or fluids that will
reach a steam pressure of more than 0.5 bar
above the normal atmospheric pressure (1013
mbar) in the permissible application tempera-
ture range.
When used as intended, the products supplied by
SKF Lubrication Systems Germany AG do not
reach the limit values listed in the Article 3 par. 1,
sections 1.1 to 1.3 and par. 2 of the Directive
97/23/EC. Therefore, they do not come under the
requirements set forth in annex I of that Directive.
They are not labelled with the CE mark with refer-
ence to the Directive 97/23/EC. They are classified
by SKF Lubrication Systems Germany AG to come
under Article 3 par. 3 of the Directive.
The EC Declaration of Conformity and EC-Declara-
tion of Incorporation is part of the product docu-
mentation. These documents are delivered with
the product.

Safety information in owner’s manual page 5 EN
Safety information in
owner’s manual
Meaning of symbols and corresponding
information
In this owner’s manual, the symbols and words
shown on this page are meant to communicate a
particular risk to persons, material assets, or the
environment.
Be sure all persons exposed to these risks read this
manual. Keep it near the equipment for future
reference.
Hazard symbols
Instructions attached directly to the equipment,
such as rotational direction arrows and fluid con-
nection labes, must be followed. Replace such
signs if they become illegible.
)Rotational direction arrow
)Fluid connection label
Keywords in safety informations and their
meanings
Read this Owner's Manual before installing, oper-
ating or maintaining the product. Failure to follow
the instructions and safety precautions in this
owner’s manual could result in serious injury,
death, or property damage. Keep for future refe-
rence.
Note: Not every symbol and corresponding infor-
mation described in the Safety Information is used
in this owner’s manual.
Information symbols
Symbole Standard Use
DIN 4844-
2 W000
General risk
of injury or
damage
DIN 4844-
2 W008 Voltage
DIN 4844-
2 W026 Hot surface
DIN 4844-
2 W028 Slip hazard
Keyword Use
Danger! Indicates a danger of injury
to persons
Caution! Indicates a danger of damage
to property or the
environment
Notice! Indicates additional
Symbol Use
Prompts you to take action
Indicates other issues, causes or
circumstances
)Used for bulleted lists
Provides additional information

Prompts you to take action

1. Safety information page 6 EN
1. Safety information
These instructions must be read and
understood by all persons who are in-
volved with the installation, operation,
maintenance, and repair of the product.
These instructions must be kept close to
the equipment for future reference.
Note that these installation instructions
is an integral part of the product. It
must be handed over to the new op-
erator of the product if the product is
sold.
The described product was manufactured in accor-
dance with all generally acknowledged regulations
pertaining to technology, occupational safety, and
accident prevention. However, dangers that can
cause physical injury to persons or damage to
other material assets might still occur during the
use of the product. This product should only be
operated if it has been installed in accordance with
these instructions and is safe to operate. In par-
ticular, malfunctions that might affect the safety of
the product must be rectified immediately.
In addition to the information provided
in the installation instructions, all gener-
ally applicable regulations on accident
prevention and the environment must
be observed.
1.1 Intended use
All SKF Lubrication Systems Germany
AG products must only be used for their
intended purpose and in accordance
with the specifications of the installation
instructions for the product in question.
The described product is for supplying centralized
lubrication systems with lubricant and is intended
for use in centralized lubrication systems. Any
other use of this product constitutes improper use.
Products of SKF Lubrication Systems Germany AG
must not be used in conjunction with fluids, group I
(hazardous fluids), according to the definition of
article 2 paragraph 2 of the Directive 67/548/EC
dtd. 27th June, 1967; and are not approved for
application with such fluids.
None of the products manufactured by SKF Lu-
brication Systems Germany AG can be used with
gases, liquefied gases, gases dissolved under
pressure, steams or fluids that will reach a steam
pressure of more than 0.5 bar above the normal
atmospheric pressure (1013 mbar) in the permis-
sible application temperature range.
Unless otherwise noted, products of SKF Lubrica-
tion Systems Germany AG must not be used in
conjunction with explosive atmospheres according
to the ATEX-Directice 94/9/EC.
1.2 Authorized personnel
The products described in the installation instruc-
tions may only be installed, operated, maintained,
and repaired by qualified experts. Qualified experts
are persons who have been trained, instructed, and
familiarized with the end product into which the
described product is installed. These persons are
considered capable of such tasks due to their
education, training, and experience with valid
standards, conditions, accident prevention regula-
tions, and installation measures. They should be
able to carry out the required tasks and to recog-
nize - and thus avoid - any dangers that might
otherwise occur.
A definition of what constitutes a qualified person
and who are unqualified persons are stipulated in
DIN VDE 0105 and IEC 364.

1. Safety information page 7 EN
1.3 Danger relating to electric current
The electrical connection for the described product
may only be established by qualified, instructed
persons who have been authorized by the operator
or owner to carry out this task. All local electrical
operating conditions and regulations such as DIN
and VDE must be observed. Improperly connected
products can result in considerable damage to
property and serious injury to persons.
Danger!
Working on products that have not been
disconnected from the power supply can
cause serious injury or death to persons.
Installation, maintenance, and repair
work may only be carried out by quali-
fied experts on products that have been
disconnected from the power supply.
The supply voltage must be turned off
before any product components are
opened.
1.4 Danger relating to system pressure
Danger!
Centralized lubrication systems are un-
der pressure when they are being oper-
ated. Such systems must therefore be
depressurized before starting installa-
tion, maintenance, or repair work and
before making any changes to the sys-
tem.
1.5 Hazard from spring preload
Danger!
The cartridge holder of the described
product is spring pre-loaded during op-
eration. The load on the pressure spring
must therefore be relieved by removing
the cartridge holder before starting as-
sembly, maintenance or repair work, or
any system modifications or system re-
pairs.
The cartridge holder of the described product is
mechanically spring-loaded. The cartridge holder
must therefore be opened carefully when replacing
the lubricant cartridge. The pressure spring, fol-
lower plate and lubricant cartridge can be removed
once the load on the pressure spring is relieved.
1.6 Warranty and liability
SKF Lubrication Systems Germany AG assumes no
warranty and liability if one of the following cir-
cumstance should occur:
)Not intended use
)Improper installation/disassembly or improper
operation of the product
)Use of contaminated lubricants or lubricants
which are not approved
)Improper maintenance or repairing of the
product
)Using of unoriginal SKF Lubrication Systems
Germany AG spare parts
)Making alterations or modifications to the
product, which are not approved and signed
by SKF Lubrication Systems Germany AG
)Non-observance of the advices about trans-
port and storage

2. Lubricants page 8 EN
2. Lubricants
2.1 General information
All SKF Lubrication Systems Germany
AG products must only be used for their
intended purpose and in accordance
with the specifications of the installation
instructions for the product in question.
The intended use of this product is for the central-
ized lubrication/lubrication of bearings and wear
points with lubricants. All physical limitations of use
stipulated in the documentation of the product
such as the owner’s manual, technical drawings
and catalogues must be observed.
Note that hazardous substances of any kind and -
in particular - the substances that are classed as
hazardous in accordance with EC-Directive
67/548/EC Article 2, Paragraph 2 may only be
inserted into and conveyed/distributed by central-
ized lubrication systems and components following
consultation with SKF Lubrication Systems Ger-
many AG and with the express written permission
of the company.
Products manufactured by SKF Lubrication
Systems Germany AG are not approved for use in
conjunction with gases, liquefied gases, gases
dissolved under pressure, vapours, and fluids with
a vapour pressure of more than 0.5 bar above
normal atmospheric pressure (1013 mbar) at the
maximum permitted temperature.
Should there be a need to use the product to
convey media other than lubricants or hazardous
substances, this must be discussed with SKF
Lubrication Systems Germany AG first and the
company must give express written permission.
In the opinion of SKF Lubrication Systems Ger-
many AG, lubricants constitute a design element
that must be considered when selecting compo-
nents and designing centralized lubrication sys-
tems. The lubrication properties of the lubricants in
question must be considered.
2.2 Selection of lubricants
You must observe the machinery manu-
facturer's information on the lubricants
to be used in the machinery.
Caution!
The manufacturer of the bearing or
machinery to be lubricated will specify
the lubricant requirements for each
point to be lubricated. You must make
sure that the required quantity of lu-
bricant is provided to the relevant lu-
bricating point. If a lubricating point is
insufficiently lubricated, the bearing may
become damaged or jammed.
While the machinery/bearing manufacturer usually
specifies lubricants, it is the owner/operator (or
maintenance person) who must finally select the
appropriate lubricant, with the help of the lubricant
supplier. When selecting a lubricant, the type of
bearing/wear point, the stresses and strains to be
expected during operation, and anticipated ambi-
ent conditions must be taken into account. All
financial/economic aspects must also be consid-
ered.
If required, SKF Lubrication Systems
Germany AG can help customers to se-
lect suitable components for the con-
veyance of the selected lubricant and to
plan and design their centralized lubri-
cation system.
If you have further questions, you can contact SKF
Lubrication Systems Germany AG. We can test
lubricants in our own laboratory to establish their
suitability for conveyance (e.g. 'oil separation'
behaviour) in centralized lubrication systems.
You can request an overview of lubricant tests
offered by SKF Lubrication Systems Germany AG
from our Service department.

2. Lubricants page 9 EN
2.3 Approved lubricants
Caution!
Only lubricants that have been approved
by SKF for use with the product may be
used. Unsuitable lubricants can cause
product malfunctions and damage to
property.
Caution!
Different lubricants must not be mixed
together. Doing so can cause damage
and require extensive cleaning of the
products/centralized lubrication system.
To prevent confusion, we recommend
that you attach information indicating
the lubricant to be used on the lubricant
reservoir.
The described product can be operated with lubri-
cants that comply with the specifications in the
technical data.
Note that some lubricants may have properties
that lie within the permitted limit values and yet
not be suitable for use in centralized lubrication
systems for other reasons. For example, some
synthetic lubricants are not compatible with elas-
tomers.
2.4 Lubricants and the environment
Caution!
Lubricants can contaminate the ground
and watercourses. Lubricants must be
used and disposed of properly. Country
specific regulations and laws on the use
and disposal of lubricants must be ob-
served.
Note that lubricants are harmful to the environ-
ment and flammable; their transportation, storage,
and processing are subject to special precautionary
measures. For specifications on transportation,
storage, processing, and dangers to the use and
the environment for the lubricant, refer to the
material safety data sheet provided by or available
from the lubricant manufacturer. You can ask the
manufacturer of the lubricant for the material
safety data sheet.
2.5 Danger relating to lubricants
Danger!
Centralized lubrication systems must be
leak-tight. Leaking centralized lubrica-
tion systems can cause a slip hazard.
When performing installation, mainte-
nance, and repairs test the centralized
lubrication system for leaks. Leaky parts
of the centralized lubrication system or
components of the lubrication equip-
ment have to be sealed immediately.
Leaking centralized lubrication systems or compo-
nents of the lubrication equipment are a source of
danger in relation to slip hazard and the risk of
injury. These dangers can cause physical injury to
persons or damage to other material assets.
Lubricants are hazardous substance.
Refer to safety precautions in the lubri-
cant manufacturer's material safety
data sheet.
You can ask the manufacturer of the lubricant for
the material safety data sheet.

3. Design and function page 10 EN
3. Design and function
3.1 General information
SKF dosing pumps with lubricant cartridge are
used to lubricate bearings with low and very low
lubricant requirements. Typical applications include
the lubrication of linear guides and rolling bearings
with low or very low lubricant requirements in
machines and machine systems.
SKF dosing pumps with lubricant cartridge are
designed to deliver grease lubricants of NGLI
Grades 000 to 2.
SKF dosing pumps with lubricant cartridge are
delivered in fully assembled condition with the
lubricant cartridge installed. The dosing pump and
the lubricant cartridge are filled standard with an
EP grease of NLGI Gr. 2. Other lubricants are
available on request based on the field of applica-
tion.
SKF dosing pumps with lubricant cartridge are
available in model designs with or without fill level
and stroke monitoring. The model designs further
differ in terms of metered quantity per lubricant
outlet and the number of lubricant outlets.
SKF dosing pumps with lubricant cartridge are
assembled in terms of the number of lubricant
outlets and the metered quantity per lubricant
outlet based on the model design ordered. The
number of lubricant outlets and the metered
quantity cannot be changed after delivery.
3.2 Design
The dosing pump with lubricant cartridge consists
of a housing containing a block of five dosing
pumps. The attached cartridge holder contains a
follower plate which is actuated by spring pressure
and provides sufficient preload for the lubricant
cartridge.
The dosing pump with lubricant cartridge has a
minimum of two and a maximum of five lubricant
outlets. A lubrication line is attached to each lubri-
cant outlet.
The metered quantity per lubricant outlet can be
selected based on the application. The fittings for
the lubricant outlets are marked with letters iden-
tifying the metered quantity. Lubricant outlet
fittings without markings have standard metering
(15 mm³/stroke). Metered quantities of
10 mm³/stroke and 20 mm³/stroke are marked
with the letters C (10 mm³/stroke) and A
(20 mm³/stroke), respectively. Unneeded lubricant
outlets must not be closed, as this will block the
unit.
The standard diameter of the lubrication lines is
tube Ø 2.5 mm x wall thickness 0.5 mm. The
maximum length of the lubrication lines is 1.5 m.
Other lengths are available on request.
For details on the number of lubricant outlets,
possible metered quantities and possible combina-
tions, please see Figures 2 and 3 or consult the
documentation.
If no documentation is available, you can
request the documentation directly from
SKF Lubrication Systems Germany AG.
3.3 Function
SKF dosing pumps with lubricant cartridge are
designed to supply a metered quantity of lubricant
to a minimum of two and a maximum of five
lubrication points.
The lubricant feeding operation is triggered when
supply voltage of 24V DC is applied to the electrical
connection. This triggers a stroke movement,
which uses dosing pistons to convey the lubricant
in the dosing chambers to the lubrication point
through the connected lubrication lines. After
supply voltage is switched off, spring tension
moves the dosing pistons back to the normal
position. During this process, the follower plate
under spring preload helps to draw new lubricant
from the lubricant cartridge into the dosing cham-
bers. The dosing pump with lubricant cartridge is
now ready for the next lubricating cycle. The time
sequence for the supply voltage control is shown in
Figure 1.

3. Design and function page 11 EN
Fig. 1: Control of supply voltage
The dosing pump design with lubricant cartridge
and monitoring system contains a fill level switch
for automatic fill level control, as well as a stroke
control switch for automatic control of the dosing
piston strokes.
When the system is idle and the fill level in the
lubricant cartridge is adequate, the contact on the
fill level switch is closed and the contact on the
stroke control switch is open. During operation, the
fill level switch remains closed if the fill level in the
lubricant cartridge is adequate. When the dosing
pistons reach the correct end position, the stroke
control switch is closed and an electrical signal is
issued to the machine control unit through the
circular electrical connector. The machine control
unit evaluates the electrical signal as "OK = lubri-
cation performed."
When the minimum fill level is reached in the
lubricant cartridge, the contact on the fill level
switch opens and the electrical signal is not issued,
even if the stroke control switch closes due to the
dosing pistons reaching the end position. The
machine control unit evaluates the lack of an
electrical signal as "not OK = lubrication not per-
formed." From this point, only a small reserve of
lubricant is still available for feeding, and the
lubricant cartridge must be replaced immediately.
If the fill level in the lubricant cartridge is adequate
(fill level switch closed) and the stroke control
switch is not closed because the dosing pistons do
not reach the end position, no electrical signal is
issued to the machine control unit through the
circular electrical connector. The machine control
unit evaluates the lack of an electrical signal as
"not OK = lubrication not performed."
For details on the design, technical data and func-
tion, please see Figures 2 and 3 or consult the
documentation.
When programming the stroke monitoring function
in the machine control unit, ensure that the dosing
pistons reach the end position a maximum of 7
minutes after the 24V DC supply voltage is
switched on by the machine control unit (see
Figure 1). During this period of maximum 7 min-
utes, the stroke control switch is open and no
electrical signal ("OK = lubrication performed") is
sent to the machine control unit. The machine
control unit should only query the control signal
once a maximum of 7 minutes have passed. If the
signal is present, the control unit evaluates it as
"OK = lubrication performed." A malfunction must
be assumed if no signal is present after 7 minutes.
The delay of 7 minutes is required due to the
operating principle of the dosing pump and must
be taken into consideration when programming the
machine control unit.

3. Design and function page 12 EN
Fig. 2: Design and technical data
ETPx-…+924

3. Design and function page 13 EN
Fig. 3: Design and technical data
ETPxWZ-…+924

4. Installation instructions page 14 EN
4. Installation instructions
Dosing pumps with lubricant cartridge described in
the installation instructions may only be installed
by qualified experts. Qualified experts are persons
who have been trained, instructed, and familiarized
with the end product into which the described
dosing pump with lubricant cartridge is to be
installed. These persons are considered capable of
such tasks due to their education, training, and
experience with valid standards, conditions, acci-
dent prevention regulations, and operating meas-
ures. They are entitled to carry out the required
tasks and to recognize - and thus avoid - any
dangers that might otherwise occur.
A definition of what constitutes a qualified person
and who are unqualified persons are stipulated in
DIN VDE 0105 and IEC 364.
Before installing/positioning the dosing pump with
lubricant cartridge, remove the packaging material
and any transportation safety devices such as
sealing plugs. Keep the packaging material until
you are sure that there are no delivery discrepan-
cies that need to be clarified.
Caution!
Dosing pumps with lubricant cartridge
must not be tipped up or dropped.
Country specific accident prevention regulations
and the operating and maintenance instructions of
the operator must be observed when carrying out
all installation work on machineries.
4.1 Positioning and mounting
Dosing pumps with lubricant cartridge should be
mounted in a way that protects it from humidity
and vibrations. It should also be easily accessible so
that all other installation work can be carried out
without problems. Make sure that there is a suffi-
cient amount of circulating air to prevent the
excessive heating of the dosing pump with lubri-
cant cartridge. For information on the maximum
permitted ambient temperature, see the drawings
in Figure 2 and 3 or the technical data at the end
of this owner’s manual.
For the product-specific technical data
on a dosing pump with lubricant car-
tridge, see the relevant documentation.
If no documentation is available, you can
directly request the documentation from
SKF Lubrication Systems Germany AG.
The dosing pump with lubricant cartridge can be
mounted in any position.

4. Installation instructions page 15 EN
Installation holes for the attachment of the dosing
pump with lubricant cartridge to the wall must be
made in accordance with the stipulations of the
section 'Mounting dimensions'.
Caution!
During installation work - and particu-
larly when drilling - the following points
must be observed:
)Existing supply lines must not be
damaged by the installation work.
)Other units must not be damaged
by the installation work.
)The dosing pump with lubricant
cartridge must not be mounted
within the radius of activity of
moving parts so it will not interfere
with or be stuck by moving parts.
)The dosing pump with lubricant
cartridge must be installed a suffi-
cient distance away from sources of
heat, so that the maximum ambient
temperature of 40°C is not ex-
ceeded.
)Country specific installation and
accident prevention regulations
must be observed.
4.2 Mounting dimensions
The dosing pump with lubricant cartridge must be
attached to the intended mounting location using
appropriate fastening materials (e.g., bolts, wash-
ers, and nuts).
The dosing pump with lubricant cartridge is
mounted using a connecting flange with three
fixing points. The device is fastened to the intended
mounting location using three M4 fastening
screws, washers and self-locking hexagon nuts
which are included in the scope of delivery. The
recommended tightening torque for the fastening
screws is 2 Nm. The dosing pump with lubricant
cartridge must be mounted in such a way that it is
not subject to tension.
For the dimensions and location of the fixing holes,
see Figure 4 or consult the documentation.
Fig. 4: Fixing holes
If no documentation is available, the dimensions
and location of the fixing holes for mounting the
dosing pump with lubricant cartridge can be de-
termined by taking measurements.
If no documentation is available, you can
request the documentation directly from
SKF Lubrication Systems Germany AG.

4. Installation instructions page 16 EN
4.3 Electrical connection
Danger!
Only qualified, instructed specialists who
are authorized by the operator may in-
stall the electrical connections for the
dosing pump with lubricant cartridge.
The local conditions for connections and
local regulations (e.g., DIN, VDE) must
be observed. Significant bodily injury
and property damage may result from
an improperly connected dosing pump
with lubricant cartridge.
The dosing pump with lubricant cartridge is avail-
able in two different electrical model designs. The
ETPx-…+924 model design does not include fill
level or stroke monitoring. The electrical connec-
tion to the 24V DC supply voltage is established
using a rectangular connector as per DIN EN
175301-803-A. See Figure 5 for the connector
pin assignment.
Fig. 5: Connector pin assignment for
ETPx-…+924
The ETPxWZ-…+924 model design is equipped
with fill level and stroke monitoring. The electrical
connection to the 24V DC supply voltage and the
machine control unit for signal evaluation is es-
tablished using a five-pin M12x1 electrical circular
connector. See Figure 6 for the connector pin
assignment.
Fig. 6: Connector pin assignment for
ETPxWZ-…+924
The dosing pump features reverse voltage protec-
tion. Ensure that the supply voltage is connected
with the correct polarity. The pump does not
function if the poles are reversed. The sealed
contact has no internal connection, as the housing
parts are made of plastic.

4. Installation instructions page 17 EN
4.4 Note about programming the
monitoring system
When programming the stroke monitoring function
in the machine control unit, ensure that the dosing
pistons reach the end position a maximum of 7
minutes after the 24V DC supply voltage is
switched on by the machine control unit (see
Figure 1). During this period of maximum 7 min-
utes, the stroke control switch is open and no
electrical signal ("OK = lubrication performed") is
sent to the machine control unit. The machine
control unit should only query the control signal
once a maximum of 7 minutes have passed. If the
signal is present, the control unit evaluates it as
"OK = lubrication performed." A malfunction must
be assumed if no signal is present after 7 minutes.
The delay of 7 minutes is required due to the
operating principle of the dosing pump and must
be taken into consideration when programming the
machine control unit.
4.5 Lubrication line connection
The lubrication line must be connected to the
lubrication unit so that no forces can be transmit-
ted to the lubrication unit once it is mounted
(strainless connection).
Caution!
The fittings used for the lubrication line
should be designed for use at the maxi-
mum operating pressure of the lubrica-
tion unit. Otherwise, the lubrication
system must be protected against ex-
cessively high pressure by means of a
pressure relief valve.
For operating pressures up to 45 bar - as are
common on single-line piston distributor systems -
SKF fittings for solderless tube connection (double
or single tapered sleeves) can be used.
The lubricant outlets of the dosing pump with
lubricant cartridge have a M6x0.75 counterbore
for connecting an SKF fitting for solderless tube
unions for plastic tubing with Ø 2.5 mm x 0.5mm
wall thickness. The following fittings are required
to connect a plastic tube:
402-603 Reinforcing socket
402-611 Tapered sleeve
402-612 Socket union
Firmly screw in the socket unions of the pipe union
and then tighten with 1 1/2 turns.
Unneeded lubricant outlets must not be closed, as
this may cause the dosing pump to function im-
properly.
Dosing pumps with lubricant cartridge can be
ordered with different numbers of lubricant out-
lets. This allows the dosing pump to be optimally
adjusted to the particular application. The number
of lubricant outlets must be specified when order-
ing.
Note that the lubricant outlets meter different
amounts of lubricant depending on the dosing
pump design. The fittings for the lubricant outlets
are marked with letters identifying the metered
quantity. Lubricant outlet fittings without markings
have standard metering (15 mm³/stroke). Metered
quantities of 10 mm³/stroke and 20 mm³/stroke
are marked with the letters C (10 mm³/stroke) and
A (20 mm³/stroke), respectively.
It is not possible to change the metered quantity of
the lubricant outlets by replacing the connecting
pieces. If you need to change the quantities me-
tered at the lubricant outlets, please contact the
Service department of SKF Lubrication Systems
Germany AG for assistance.
The standard diameter for the lubrication lines is
tube Ø 2.5 mm x wall thickness 0.5 mm. The
maximum length of the lubrication lines is 1.5 m.
Other lengths are available on request.

4. Installation instructions page 18 EN
4.6 Laying of lubrication line
The following information should be observed for
the laying of the main lubrication lines and lubri-
cating point lines in order to ensure that the entire
centralized lubrication system works smoothly.
The main lubrication line should be dimensioned in
accordance with the maximum pressure and
conveyance volume to which the lubrication unit is
exposed. Where possible, the main lubrication line
should climb from the lubrication unit and enable
deaeration at the highest point of the lubrication
line system.
The pipes, hoses, cut-off valves, control valves,
fittings, and so on must be suitable for the maxi-
mum operating pressure of the lubrication unit, the
permitted temperatures, and the lubricants to be
conveyed. In addition, the lubrication system must
be protected against excessively high pressure by
means of a pressure relief valve.
All components of the lubrication line system -
including pipes, hoses, cut-off valves, control
valves, fittings, and so on - must be carefully
cleaned before installation. No seals on lubrication
line systems 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 must be laid in a way that pre-
vents air pockets from forming anywhere on the
system. Cross section changes to the lubrication
line from a small to a large cross section in the di-
rection of flow of the lubricant are to be avoided.
Transitions from one cross section to another
should be smooth.
The flow of the lubricant in the lubrication lines
should not be impeded through the incorporation
of sharp bends, corner valves, or check valves.
Unavoidable cross section changes in lubrication
lines must have smooth transitions. Wherever
possible, sudden changes of direction are to be
avoided.
Caution!
Lubrication lines must be leak-tight. Lu-
bricants can contaminate the ground
and watercourses. Lubricants must be
used and disposed of properly. Country
specific regulations and laws on the use
and disposal of lubricants must be ob-
served.
Danger!
Centralized lubrication systems must be
leak-tight. Leaking centralized lubrica-
tion systems are a source of danger in
relation to slip hazard and the risk of
injury. When making installation,
maintenance, and repair work test the
centralized lubrication system for leaks.
Leaky parts of the centralized lubrication
system or components of the lubrication
equipment have to be sealed immedi-
ately.
Leaking centralized lubrication systems or compo-
nents of the lubrication equipment are a source of
danger in relation to slip hazard and the risk of
injury. These dangers can cause physical injury to
persons or damage to other material assets.
Lubricants are hazardous substance.
Refer to safety precautions in the lubri-
cant manufacturer's material safety
data sheet.
You can ask the manufacturer of the lubricant for
the material safety data sheet.

5. Transport, delivery and storage page 19 EN
5. Transport, delivery and
storage
5.1 Transport
SKF Lubrication Systems Germany AG products
are packaged in accordance with the regulations of
the recipient country and in accordance with DIN
ISO 9001. Our products must be transported with
care. Products must be protected against me-
chanical influences such as impacts. Transport
packaging must be labelled with the information
'Do not drop!'.
Caution!
The product must not be tipped up or
dropped.
There are no restrictions relating to land, air, or
sea transportation.
5.2 Delivery
Following receipt of the shipment, the product or
products must be checked for damage and the
shipping documents should be used to make sure
that the delivery is complete. Keep the packaging
material until you are sure that there are no deliv-
ery discrepancies that need to be clarified.
5.3 Storage
The following conditions apply to the storage of
SKF Lubrication Systems Germany AG products.
5.3.1 Storage of lubrication units
)Ambient conditions: Dry, dust-free environ-
ment; storage in well-ventilated, dry area
)Storage time: 24 months max.
)Permitted air humidity: < 65%
)Warehouse temperature: 10 - 40°C
)Light: Direct sunlight/UV radiation must be
avoided; nearby sources of heat must be
screened
5.3.2 Storage of electronic and electrical
devices
)Ambient conditions: Dry, dust-free environ-
ment; storage in well-ventilated, dry area
)Storage time: 24 months max.
)Permitted air humidity: < 65%
)Warehouse temperature: 10 - 40°C
)Light: Direct sunlight/UV radiation must be
avoided; nearby sources of heat must be
screened
5.3.3 Storage - general information
)Ensure that no dust gets into stored products
by wrapping them in plastic film
)Store products on racks or pallets to protect
them from damp floors
)Before placing products into storage, protect
uncoated metal surfaces - and drive parts and
mount surfaces in particular - from corrosion
using long-term corrosion protection
)At 6-monthly intervals: Check products for
corrosion. If signs of corrosion are found, re-
move the corrosion that has already resulted
and improve the corrosion protection meas-
ures.
)Drives must be protected against mechanical
damage

6. Operation page 20 EN
6. Operation
6.1 General information
The described dosing pumps with lubricant car-
tridge are operated automatically or manually
depending on the design. The transport of lubri-
cants through the lubrication lines should be
subjected to regular visual checks.
The lubricant fill level in the lubricant cartridge
should be subjected to regular visual checks. If the
lubricant fill level is low, the lubricant cartridge
needs to be replaced as described in the Chapter
"Commissioning."
You must observe the lubricant manu-
facturer's instructions and precautions
on the lubricant to be used.
Caution!
Use only clean lubricants. Contaminated
lubricants can result in serious system
malfunctions.
Caution!
Different lubricants must not be mixed
together. Doing so can cause damage
and require extensive cleaning of the
dosing pump with lubricant cartridge
/centralized lubrication system. To pre-
vent confusion, we recommend that you
fit an adhesive label on the reservoir
with the information indicating the lu-
bricant to be used on the lubricant res-
ervoir.
Warning!
The lubricant cartridge must not be
completely emptied during operation, as
this creates a risk of air being intro-
duced into the dosing pump and the
centralized lubrication system. This may
cause the lubrication point to receive
insufficient lubrication, which can lead to
damage and failure of the bearing.
If the lubricant cartridge is completely emptied
during operation, the dosing pump and the entire
centralized lubrication system must be completely
vented.
Warning!
Air pockets in the lubricant cartridge or
dosing pump adversely affect lubricant
delivery. This may cause the lubrication
point to receive insufficient lubrication,
which can lead to damage and failure of
the bearing.
6.2 Startup
Before starting up the dosing pump with lubricant
cartridge, check all electrical and hydraulic con-
nections.
The diameter and maximum length of the lubrica-
tion lines are tube Ø 2.5 mm x length 1.5 m. Other
dimensions are available on request.
The lubrication lines must be filled with lubricant
before they are connected to the lubricant outlets
on the dosing pump with lubricant cartridge. Filled
lubrication lines are available as accessories from
SKF Lubrication Systems Germany AG.
The process of deaerating the centralized lubrica-
tion system is facilitated by:
)Opening the ends of the main pipe until bub-
ble-free lubricant escapes
)Filling longer pipe sections before connecting
the system to the lubricating point