SKF PAB Series User manual

Product designation
Centrifugal pump
Product series: PAB… / PNB…
Original assembly instructions with associated
operating instructions acc. to EC Machinery Directive
2006/42/EC
Version 02

Masthead Page 2 EN
Masthead
These original assembly instructions with
associated operating instructions pursuant to EC
Machinery Directive 2006/42/EC are an integral
part of the described product and must be kept for
future use.
These original assembly instructions with
associated operating instructions have been
prepared in accordance with the established
standards and rules for technical documentation,
VDI 4500.
© SKF Lubrication Systems Germany GmbH
This documentation is protected by copyright. SKF
Lubrication Systems Germany GmbH reserves all
rights, including those to the photomechanical
reproduction, duplication, and distribution by
means of special procedures (e.g., data processing,
data media, and data networks) of this
documentation in whole or in part.
Subject to changes in contents and technical
information.
Service
If you have technical questions, please contact the
following addresses:
SKF Lubrication Systems Germany GmbH
Spandau Pumpen product range
Motzener Strasse 35/37
12277 Berlin
Germany
Tel. [phone]
Fax [phone]
[email protected]
www.spandaupumpen.de

Table of contents Page 3 EN
Table of contents
Original assembly instructions acc. to EC
Directive 2006/42/EC
Masthead 2
Service 2
Table of contents 3
Information concerning EC Declaration of
Conformity and EC Declaration of Incorporation 4
General information 5
Explanation of symbols and signs 5
1. Safety instructions 7
1.1 Intended use 7
1.2 Authorized personnel 8
1.3 Electric shock hazard 9
1.4 Hydraulic pressure hazard 10
1.5 Hazard from rotating components 10
1.6 Warranty and liability 10
1.7 Hazard from hazardous or dangerous
substances 11
2. Pumped media 11
3. Assemblies and type designation 12
3.1 PAB series 13
3.2 PNB series 13
4. Design and function 14
5. Assembly instructions 15
5.1 Setup 15
5.2 Port dimensions 17
5.3 Pipe arrangement 17
5.4 Pipe connection 17
5.5 Screw union on reservoir 17
5.6 Electrical connection 18
Operating instructions 20
6. Transport, delivery, and storage 21
6.1 Pump units 21
6.2 Electronic and electrical devices 21
6.3 General notes 21
7. Operation and commissioning 22
8. Shutdown 23
8.1 Temporary shutdown 23
8.2 Permanent shutdown 23
9. Maintenance 24
9.1 General notes 24
9.2 Bearings and lubrication 24
9.3 Spare parts 25
9.4 Modifications and rework 25
10. Malfunctions 26
11. Technical data 30
11.1 Features 30
11.2 Special design features of the PAB
series 30
11.3 Mechanical design 30
11.4 Characteristic curves for 50Hz or 60Hz
with impeller change - PAB 31
11.5 Electrical values for PAB 32
11.7 Dimensions and weights for PAB 33
11.7 Characteristic curves for 50Hz or 60Hz
with impeller change - PNB 34
11.8 Electrical values for PNB 35
11.9 Dimensions and weights for PNB 36
12. Notes 37

Page 4 EN
Information concerning EC Declaration of Conformity and EC Declaration of
Incorporation
The product
Centrifugal pump
of the series:
PAB… / PNB…
is hereby confirmed to comply with the essential
protection requirements stipulated by the following
Directive(s) of the Council on the approximation of
laws of the Member States concerning:
Machinery Directive 2006/42/EC
Low Voltage Devices 2014/35/EU
Electromagnetic Compatibility 2014/30/EU
Equipment for Potentially Explosive
Atmospheres 2014/34/EU
Directive RoHS 2014/65/EU
Notes:
(a) This declaration certifies compliance with the
aforementioned Directives, but does not
constitute a guarantee of characteristics.
(b) The safety instructions in the documentation
included with the product must be observed.
(c) The commissioning of the products here
certified is prohibited until the machine, vehicle
or similar in which the product is installed
conforms with the provisions and
requirements of the applicable Directives.
(d) The operation of the products at non-standard
supply voltage, as well as non-adherence to
the installation instructions, can negatively
impact the EMC characteristics and electrical
safety.
We further declare:
The aforementioned product is, according to
EC Machinery Directive 2006/42/EC,
Annex II Part B, designed for installation
in machinery / for incorporation with other
machinery to form a machine. Within the
scope of application of the EC Directive,
commissioning shall be prohibited until the
machinery in which this part is installed
conforms with the provisions of this
Directive.
The aforementioned product may, with
reference to EU Directive 2014/68/EU
concerning pressure equipment, only be
used in accordance with its intended use and
in conformity with the instructions provided
in the documentation. The following must be
observed in this regard:
The products are neither designed nor approved
for use in conjunction with fluids of the CLP
Regulation 1272/2008.
The product is neither designed nor approved for
use in conjunction with gases, liquefied gases,
pressurized gases in solution, vapors, or such fluids
whose vapor pressure exceeds normal atmospheric
pressure (1013 mbar) by more than 0.5 bar at
their maximum permissible temperature.
When used in conformity with their intended use,
the products supplied by SKF Lubrication Systems
Germany GmbH do not reach the limit values listed
in Directive 2014/68/EU. They are therefore not
subject to the requirements of this Directive.
Consequently, they do not bear a CE marking in
respect of Directive 2014/68/EU. SKF Lubrication
Systems Germany GmbH classifies them according
to Whereas clause 38 of the Directive.
The Declaration of Conformity and Incorporation
forms part of the product documentation and is
supplied together with the product.

General information Page 5 EN
General information
Explanation of symbols and signs
You will find these symbols, which warn of specific
dangers to persons, material assets, or the
environment, next to all safety instructions in these
assembly instructions.
Please heed these instructions and proceed with
special care in such cases. Please pass all safety
instructions to other users.
Hazard symbols
Instructions attached directly to the equipment,
such as rotational direction arrows and fluid
connection labels, must be followed. Replace such
signs if they become illegible.
Rotation arrow
Fluid connection labels
must be followed and kept in fully legible condition.
Indicators used with safety instructions, and
their significance
Prohibition signs
You are responsible!
Please read the assembly instructions thoroughly
and follow the safety instructions.
Informational symbols
Signal
word
Application
Danger! danger of bodily injury
Warning! Danger of damage to property
and the environment
Note! Provides additional information
Note
Prompts an action
Used for itemizing
Refers to other facts, causes, or
consequences
Provides additional information
DIN 4844-
2 W000
General
hazard
DIN 4844-
2 W008 Electricity
DIN 4844-
2 W026 Hot surface
DIN 4844-
2 W028
Slipping
hazard
DIN 4844-
2 W002
Explosion
hazard
DIN 4844-2
D-P008
Do not
touch

Page 6 EN
Product designation
Centrifugal pump
Product series: PAB… / PNB…
Original assembly instructions acc. to EC Machinery
Directive 2006/42/EC

1. Safety instructions Page 7 EN
1. Safety instructions
Please observe the following safety instructions
to ensure trouble-free functioning of the pump
and to prevent damage.
The operator of the described
product must ensure that the
assembly instructions are read and
understood by all persons tasked
with the assembly, operation,
maintenance, and repair of the
product. The assembly instructions
must be kept readily available.
Note that the assembly instructions
form part of the product and must
accompany the product if sold to a
new owner.
The product described here is manufactured in
accordance with the generally accepted rules
and standards of industry practice and with
occupational safety and accident prevention
regulations. Risks may, however, arise from its
usage and may result in physical harm to
persons or damage to other material assets.
Therefore the product may only be used in
proper technical condition and in observance of
the assembly instructions.
In particular, any malfunctions which may
affect safety must be remedied immediately.
Appropriate safety measures must be taken
according to the parameters of the media being
supplied.
Safety mechanisms on the device must not be
damaged, deactivated, rendered inoperable, or
replaced by parts that have not been expressly
approved by SKF Lubrication Systems Germany
GmbH.
In addition to the assembly
instructions, general statutory
regulations and other regulations for
accident prevention and
environmental protection must be
observed and applied.
1.1 Intended use
All products from SKF Lubrication
Systems Germany GmbH may be
used only for their intended purpose
and in accordance with the
information in the product's
assembly instructions.
The pumps may only be used in
accordance with the technical
documentation and the
specifications on the rating plates. In
particular, the pumps are prohibited
from use in areas requiring devices
of Equipment Group I.
Spandau PAB and PNB immersion pumps are
single-stage or multi-stage centrifugal pumps
for feeding non-aerated fluids without abrasive
or long-fibered components.
They are designed for vertical installation.
Continuous operation of the
immersion pumps without a medium
(dry running) is not permitted.
Pumps of the PAB and PNB series are
designed for operation at a maximum speed of
3600 rpm with a corresponding impeller
configuration. Please consult the shipping
documents or the rating plates on the drive
motors for the exact rated frequencies.
Operation on a frequency converter is not
permitted. Deviations from the
abovementioned must be clarified with the
supplier or are noted in the shipping
documents and on the pump's rating plates.
Any other use is deemed non-compliant with
the intended use and could result in damage,
malfunction, or even injury.

1. Safety instructions Page 8 EN
Only media approved for the type of
pump may be fed. Unsuitable media
may result in pump failure and
potentially severe injury or death
and property damage.
Only media whose thermal
conductivity is at least 60% of that of
water may be fed.
If feeding a fluid whose density
and/or viscosity deviates from that of
approved media, ensure that energy
requirements are met in
consideration of the hydraulic
output.
The unit must not be operated if the
non-metallic materials in the unit
are incompatible with the medium.
All instructions placed directly on the
pump regarding direction of
rotation, dry running, bypass
connection, and the rating plate
must be followed and kept in fully
legible condition.
Unauthorized alterations to the
pump and the use of unapproved
spare parts and accessories are
prohibited and nullify the warranty.
The unit must not be operated if
damaged, e.g. deformed.
Any influence by foreign substances
must be prevented.
Worn-out units must be rendered inoperable
and then disposed of properly.
In particular, the described product is neither
designed nor approved for use in conjunction
with dangerous fluids as defined in the CLP
Regulation 1272.
The described product is neither designed nor
approved for use in conjunction with gases,
liquefied gases, pressurized gases in solution,
vapors, or such fluids whose vapor pressure
exceeds normal atmospheric pressure (1013
mbar) by more than 0.5 bar at their maximum
permissible temperature.
Unless specially indicated otherwise, products
from SKF Lubrication Systems Germany GmbH
are not approved for use in potentially
explosive areas as defined in the ATEX Directive
2014/34/EU.
1.2 Authorized personnel
Only qualified technical personnel may install,
operate, maintain, and repair the products
described in the assembly instructions.
Qualified technical personnel are persons who
have been trained, assigned, and instructed by
the operator of the final product into which the
product described here is incorporated.
Such persons are familiar with the relevant
standards, rules, accident prevention
regulations, and assembly conditions as a result
of their training, experience, and instruction.
They are qualified to carry out the required
activities and in doing so recognize and avoid
potential hazards.
Serious injury or death and property
damage may result from improperly
connected units.

1. Safety instructions Page 9 EN
Alteration and repair work may only
be performed by persons possessing
the knowledge and certifications
required for the potentially explosive
atmosphere.
The definition of qualified personnel and the
prohibition against employing non-qualified
personnel are laid down in DIN VDE 0105 and
IEC 364.
The requirements of the Organizational Safety
Ordinance and the Technical Implementation of
the Company Safety and Health Provisions
must be complied with.
1.3 Electric shock hazard
Electrical connections for the described product
may only be established by qualified and
trained personnel authorized to do so by the
operator, and in observance of the local
electrical operating conditions and local
regulations (e.g., DIN, VDE). Serious injury or
death and property damage may result from
improperly connected products.
Performing work on products that
have not been de-energized may
result in serious injury or death.
Assembly, maintenance, and repair
work may only be performed on
products that have been de-
energized by qualified technical
personnel. The supply voltage must
be switched off before opening any
of the product's components.

1. Safety instructions Page 10 EN
1.4 Hydraulic pressure hazard
The product described here is
pressurized during operation. The
product must therefore be
depressurized before starting
assembly, maintenance or repair
work, or any system modifications or
system repairs.
1.5 Hazard from rotating components
Touching the rotating impeller
during startup, shutdown, trial run,
setup, fault-finding, fault resolution,
maintenance, or inspection can
result in severe injury.
Touching the pump in the area of
the intake opening is prohibited
during operation.
1.6 Warranty and liability
SKF Lubrication Systems Germany GmbH
assumes no warranty or liability for the
following:
Non-compliant usage
Improper assembly/disassembly or
improper operation
Use of unsuitable or contaminated
lubricants
Maintenance and repair work performed
improperly or not performed at all
Use of non-original SKF spare parts
Alterations or modifications performed
without written approval from SKF
Lubrication Systems Germany GmbH
Non-compliance with the instructions for
transport and storage

2. Pumped media Page 11 EN
1.7 Hazard from hazardous or
dangerous substances
Safety measures must be taken
according to the parameters of the
media in use, especially in the case
of hazardous or dangerous
substances.
Leakage occurring during the
feeding of hazardous or dangerous
substances must be removed in such
a way that it presents no risk to
persons or the environment and in
observation of statutory provisions.
The entire pump may be used only
in potentially explosive atmospheres
that require category 2 (zone 1).
However, in accordance with the zone
classification, at least the drive shaft must pass
through zone 0. Provided that the area
requiring category 1 is confined solely to the
drive shaft and it is also ensured that no impact
sparks can occur, there are no safety concerns
for the described use of the pumps.
The requirements specified above
must be met by level monitoring
that is configured so as to ensure
that the bottom shaft leadthrough
and the pump bottom, including
impeller, are covered and that (if
present) an inspection door is kept
closed during operation.
Please note that the pump may be used only
in unmodified form. In particular, the part
outside the reservoir must not be equipped
with an additional housing or a closed cover.
2. Pumped media
Solvent-based inks
Varnishes and oil-based paints
Water-based paints
Cleaning fluids
Others
PAB and PNB centrifugal pumps are especially
well suited for feeding inks because they feed
fluids evenly and without pulsations.
Their open impeller design allows for small
particles in the return flow.
Viscosity: max. 20 mm2/s
> 20 mm2/s on request
Ambient temperature: max. 40°C
Temperature range of medium:
0°C to +60°C
The operational limits such as the temperature
of the medium depend on the respective
operating and usage conditions and may differ.
Beyond the defined field of application,
additional specifications apply to the PAB and
PNB series when used in potentially explosive
atmospheres.

3. Assemblies and type designation Page 12 EN
3. Assemblies and type
designation
Explosion protection class
Beyond the defined field of application,
additional specifications apply to the PAB and
PNB series when used in potentially explosive
atmospheres. The electric drive motors rated
for use in explosive atmospheres comply with
the applicable standards of the series EN
60034-1,
EN 60079-0, EN 60079-1: and
EN 60079-7. Their use in potentially explosive
atmospheres is permitted only as specified by
the competent regulatory authority in
compliance with the standard EN 1127-1. The
regulatory authority and/or the user are
responsible for determining the explosion
hazard and zone classification.
Use of the standard motors on a
frequency converter is not
permitted.
Pumps of the PAB and PNB series comply with
the harmonized standards EN 13463-1 and EN
13463-5. Their use in potentially explosive
atmospheres is permitted only as specified by
the competent regulatory authority. The
regulatory authority and/or the user are
responsible for determining
the explosion hazard and zone classification in
compliance with the standard EN 1127-1. The
PAB and PNB pump series come standard with
markings for the following explosion protection
class. Differing ignition protection ratings,
temperature classes and any special
requirements must be indicated on the rating
plate and/or in the supplied EC type certificate.
PNB
Motor:
II 2 G Ex de IIC T4 Gb
Pump:
II 2 G c Ex de IIB T4
PAB
Motor:
II 2 G Ex de IIC T4 Gb
Pump
component:
II 2 G c IIB T4
Spandau immersion pumps of the PAB and
PNB series are available in various sizes which
differ chiefly in terms of dimensions and
delivery output. All sizes function in the same
way. See the rating plate for the size and
designation of your pump, as well as other
important data.
The entire pump may be used only
in potentially explosive atmospheres
that require category 2 (zone 1).

3. Assemblies and type designation Page 13 EN
3.1 PAB series
The PAB pump series has a design allowing the
pump and the motor component to be
separated for better handling. PAB pump
components can only be operated with PAB
motor components. The use of coupling
elements other than those supplied is not
permitted. The order reference for the pumps
is structured based on the type code. When
assembling the motor components, ensure that
the letters for motor output in the designation
are identical for the motor component and the
pump component. The letters for motor output
must be identical in the motor component and
the pump component. See the shipping
documents for any deviations.
3.2 PNB series
The PNB pump series has a design in which the
pump component and the motor component
are firmly connected together. The motors are
separately type-tested with
protection class EEx de. The order reference for
the pumps is structured based on the type
code. See the rating plates for the specific
specifications for the explosion protection of the
pumps or motors.
Type code
Designation PAB 05 01 G AA 170 E 01 XD
Group
PAB
PNB
Size
PAB 05/07/08/11/20
PNB 05/07/08/34
Number of stages
01 = 1 stage
02 = 2 stages
Material
C = GCI, chemically nickel-plated (standard)
Pump design
AA = standard design
Immersion depth [mm]
170…550
Motor index
E = 0.37kW G = 0.75kW K = 2.2kW
F = 0.55kW H = 1.1kW
Electrical supply 1
)
01 = 230/400 V, 50 Hz / 265/460 V, 60 Hz
05 = 230/400 V, 50 Hz
Motor design
XK = Motor with protection class
“explosion-proof enclosure” Ex de, with PTC thermistor
1
)
Otherdesignsavailableonrequest

4. Design and function Page 14 EN
4. Design and function
Pumps of the PAB and PNB series have the
same basic design, the only difference being
that the pump port on the PAB series can be
separated from the drive motor. In this series,
both shaft ends (pump/motor) are connected
via a coupling (Figure 1, right). In the other
series, the motor shaft is rigidly connected with
the pump shaft (Figure 1, left). The pumps are
utilized in suction operation. They are designed
for vertical installation. The electric drive is
seated on the pump port or flange-type end
shield. The individual impellers run in the pump
chambers that are fastened to the lower part of
the pump port. This port, the electric drive or
the pump port/flange-type end shield contain
the bearing mounting of the pump shaft. The
sealing is contained in the pump port. The
pump port also contains the pressure
connection and a connecting flange for
mounting on a reservoir. A variable number of
pump impellers determined based on the
design feeds the medium that is suctioned
through the intake opening in the bottom area
of the pump.
Figure 1 Design of PAB and PNB pumps

5. Assembly instructions Page 15 EN
5. Assembly instructions
Only qualified technical personnel may install,
operate, maintain, and repair the products
described in the assembly instructions.
Qualified technical personnel are persons who
have been trained, assigned, and instructed by
the operator of the final product into which the
product described here is incorporated. Such
persons are familiar with the relevant
standards, rules, accident prevention
regulations, and operating conditions as a
result of their training, experience, and
instruction. They are qualified to carry out the
required activities and in doing so recognize
and avoid potential hazards.
The definition of qualified personnel and the
prohibition against employing non-qualified
personnel are laid down in DIN VDE 0105 and
IEC 364.
Before assembling/setting up the product,
remove the packaging material and any
shipping braces (e.g., plugs on suction or
pressure port). The packaging material must be
preserved until any discrepancies are resolved.
Do not tilt or drop the product.
During all assembly work on machinery,
observe the local accident prevention
regulations as well as the applicable operating
and maintenance specifications.
5.1 Setup
Spandau immersion pumps of the PAB and
PNB series are designed for vertical reservoir
installation. Please contact your pump supplier
if you need a pump for installation in a different
position. Before installing the pump, remove
the packaging material and shipping braces
(e.g., plugs on suction or pressure connection).
When setting up the pump, observe the highest
and the lowest permissible fluid level and the
minimum fluid level
(see Figure 2).
When operating the pump, it must be ensured
that the lowest permissible fluid level is above
the lowest pump chamber.
Figure 2 Fluid level
The requirements specified above
must be met by level monitoring
that is configured so as to ensure
that the bottom shaft leadthrough
and the pump bottom, including
impeller, are covered and that (if
present) an inspection door is kept
closed during operation.

5. Assembly instructions Page 16 EN
The product 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 sufficient air circulation to
prevent excessive heating of the product. For
the maximum permissible ambient
temperature, see "Technical data."
The pump is equipped with a 4-hole connecting
flange with standard port dimensions (see
"Technical data") for assembly. The screw
connections must be permanently secured
against loosening.
Equipotential bonding is required for
systems in potentially explosive
areas.
Observe EN 60079-14 with regard
to conductor cross-section, screw
connections, and corrosion risk.
When selecting the installation location, ensure
sufficient space for installation, cabling,
inspection, and venting. The distance between
the air inlet on the motor and the walls,
components, etc. must be at least ¼ of the
diameter of the air inlet opening. The direction
of the air flow is from the air inlet opening to
the pump.
The reservoir must be equipped with
equipotential bonding and be
integrated into the equipotential
bonding system.
If no customer documentation is
available, you can request the
customer documentation directly
from SKF Lubrication Systems
Germany GmbH.

5. Assembly instructions Page 17 EN
5.2 Port dimensions
See the "Technical data" chapter.
5.3 Pipe arrangement
When arranging the lines, observe the following
instructions to ensure that the supply circuit
functions smoothly.
All line components such as pipes, shut-off
devices, valves, etc. that come into contact
with the medium must be cleaned
thoroughly. No seals in the lines may
protrude inwards so that contaminants
cannot enter the pump and damage or
destroy the pump.
Only use pipes or hoses suitable for the
operating pressure of the specific pump,
the prevailing temperatures, and the media
that will be fed.
The lines must be connected in such a way
that no forces are transferred to the pump
(stress-free connection). It is therefore
recommended that delivery lines be
connected to the pump before the pump is
fastened to the reservoir cover.
The flow of medium in the lines should not
be impeded by the incorporation of sharp
bends, angle valves, or flap valves.
Unavoidable changes in the cross-section
in the feed paths must have smooth
transitions. Sudden changes of direction
should always be avoided.
The lines must always be free of leaks and
arranged so that air pockets cannot form
anywhere.
The pipes should always rise upward.
Delivery lines should be ventable at the
highest point.
The cross-section of the delivery line
should be sized at least as large as the
cross-section of the pressure connection
port.
5.4 Pipe connection
Connect the pipes to the provided connection
port on the pump port. In doing so, ensure that
no forces are transferred to the pump. Connect
the pipe to the face surface using a cylindrical
thread to form a flat seal. In case of tapered
threads, use a suitable sealing material. The
tightening torque must not exceed 70 Nm, as
higher torque may incur a risk of the pump port
cracking or breaking off.
5.5 Screw union on reservoir
After the delivery line is installed, the pump
can be screwed onto the reservoir with a
maximum of 15 Nm.

5. Assembly instructions Page 18 EN
5.6 Electrical connection
Electrical connections for the pump
may only be established by qualified
and trained personnel. The
instructions in these operating
instructions must be observed.
The reservoir must be equipped with
equipotential bonding and be
integrated into the equipotential
bonding system.
The pump motor must be connected according
to the specifications on the rating plate and the
mains voltage.
Equipotential bonding is required for
systems in potentially explosive
areas.
Observe EN 60079-14 with regard
to conductor cross-section, screw
connections, and corrosion risk.
Establish the connection in accordance with the
relevant regulations and standards as well as
the conditions for connections contained in
international regulations for the setup and
operation of electrical equipment in potentially
explosive atmospheres. The cables and lines
must be fastened using a cable fitting with
strain relief in the terminal box. Only cable
fittings with type certification may be used.
Implement the circuit according to the wiring
diagram on the motor's terminal box. In the
standard circuit, the motors are connected as
shown in Figure 3.
When connecting the motors, pay special
attention that connections in the terminal box
are established correctly and completely.
Tighten the nuts on the connecting screws
firmly without applying excessive force. A
secure protective earth connection must also
be established.
The terminal box must always
be closed during operation.
If a pump/motor has been stored unused for an
extended time, it is recommended that the
insulation resistance of the winding against the
housing be measured before startup. On low-
voltage motors, the minimum value at a
winding temperature of approx. 20°C is 1 kΩ
per volt of rated voltage. If the value falls below
this, the motor must be dried in a warm area or
using heaters until the required insulation value
is attained.
Figure 3 Delta/star connection

5. Assembly instructions Page 19 EN
5.7 Motor protection
Electrical machines must be
protected against excessive heating
resulting from overload.
Only type-certified triggering devices can be
used as safety
devices:
Figure 4 Delta/star connection with
thermistor (e.g., PTC)
a) Devices for direct temperature monitoring
using thermistors (Figure 4).
b) Other devices providing required protection
against excessive heating equivalent to the
aforementioned safety devices.
Additional requirements apply to
machines with an ignition protection
rating of "Increased Safety" "e" in
zone 1.
5.8 Direction of rotation
The direction of motor rotation must match the
arrow on the pump. To check the direction of
rotation, open the valves in the delivery and
intake lines and switch on the motor briefly
(approx. 1 s).
When switching on the system, the pump
chamber must be filled with fluid.
The pump will be damaged if the
direction is incorrect.

Operating instructions Page 20 EN
Product designation
Centrifugal pump
Product series: PAB… / PNB…
Operating instructions