Pfeiffer Vacuum BA 251 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
BA 251 | BA 501
Rotary vane pump

Dear Customer,
Thank you for choosing a Pfeiffer Vacuum product. Your new rotary vane pump is designed
to support you by its performance, its perfect operation and without interfering your individual
application. The name Pfeiffer Vacuum stands for high-quality vacuum technology, a
comprehensive and complete range of top-quality products and first-class service. With this
expertise, we have acquired a multitude of skills contributing to an efficient and secure
implementation of our product.
Knowing that our product must not interfere with your actual work, we are convinced that our
product offers you the solution that supports you in the effective and trouble-free execution of
your individual application.
Please read these operating instructions before putting your product into operation for the
first time. If you have any questions or suggestions, please feel free to contact info@pfeiffer-
vacuum.de.
Further operating instructions from Pfeiffer Vacuum can be found in the Download Center on
our website.
Disclaimer of liability
These operating instructions describe all models and variants of your product. Note that your
product may not be equipped with all features described in this document. Pfeiffer Vacuum
constantly adapts its products to the latest state of the art without prior notice. Please take
into account that online operating instructions can deviate from the printed operating
instructions supplied with your product.
Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from
the use of the product that contradicts its proper use or is explicitly defined as foreseeable
misuse.
Copyright
This document is the intellectual property of Pfeiffer Vacuum and all contents of this
document are protected by copyright. They may not be copied, altered, reproduced or
published without the prior written permission of Pfeiffer Vacuum.
We reserve the right to make changes to the technical data and information in this document.
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Table of contents
1 About this manual 7
1.1 Validity 7
1.1.1 Applicable documents 7
1.1.2 Variants 7
1.2 Target group 7
1.3 Conventions 7
1.3.1 Instructions in the text 7
1.3.2 Pictographs 7
1.3.3 Stickers on product 8
1.3.4 Abbreviations 9
1.3.5 Trademark proof 9
2 Safety 10
2.1 General safety information 10
2.2 Safety instructions 10
2.3 Safety precautions 14
2.4 Limits of use of product 14
2.5 Proper use 15
2.6 Foreseeable improper use 15
2.7 Personnel qualification 15
2.7.1 Ensuring personnel qualification 16
2.7.2 Personnel qualification for maintenance and repair 16
2.7.3 Advanced training with Pfeiffer Vacuum 16
3 Product description 17
3.1 Function 17
3.1.1 Actuator 17
3.1.2 Gas ballast 17
3.1.3 Cooling water controller 18
3.1.4 Venting or measuring connection 18
3.1.5 Operating fluid, oil 18
3.2 Operating principle 18
3.3 Product features 19
3.4 Identifying the product 19
3.5 Scope of delivery 19
4 Transportation and Storage 20
4.1 Transporting vacuum pump 20
4.2 Storing vacuum pump 21
5 Installation 22
5.1 Setting up vacuum pump 22
5.2 Connecting vacuum side 22
5.3 Connecting exhaust side 24
5.4 Connecting the cooling water supply 25
5.5 Connecting to mains power supply 26
5.5.1 Connecting three-phase motor with 6-pin terminal board 27
5.5.2 Setting motor protection switch 28
5.5.3 Connecting the PTC thermistor tripping unit 28
5.5.4 Checking direction of rotation 29
5.6 Installing belt guard 30
5.6.1 Removing belt guard 30
5.6.2 Tensioning v-belt 31
5.6.3 Mounting belt guard temporarily 32
5.6.4 Marking protective coverings 32
5.6.5 Installing cage nuts 33
Table of contents
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5.6.6 Mounting belt guard to base frame 33
5.6.7 Mounting protective coverings to belt guard 34
5.7 Filling up operating fluid 35
6 Operation 37
6.1 Commissioning vacuum pump 37
6.2 Switching on vacuum pump 38
6.3 Setting cooling water controller 39
6.4 Operating rotary vane pump with gas ballast 40
6.5 Refilling operating fluid 40
6.6 Switching off vacuum pump 41
7 Maintenance 42
7.1 Maintenance instructions 42
7.2 Checklist for inspection and maintenance 43
7.3 Change the operating fluid 44
7.3.1 Determining degree of aging of P3 operating fluid 45
7.3.2 Changing operating fluid in operating fluid storage tank 46
7.3.3 Rinsing and cleaning rotary vane pump 47
7.3.4 Changing operating fluid in bearings 48
7.4 Disassembling and cleaning gas ballast valve 49
7.5 Adjusting the noise reduction 51
7.6 Tensioning v-belt 52
8 Decommissioning 54
8.1 Shutting down for longer periods 54
8.2 Recommissioning 54
9 Recycling and disposal 55
9.1 General disposal information 55
9.2 Dispose of rotary vane pump 55
10 Malfunctions 56
11 Service solutions by Pfeiffer Vacuum 59
12 Spare parts 61
12.1 Ordering spare part packages 61
12.2 Set of seals 61
12.3 Maintenance kit 1 – maintenance level 1 61
12.4 Maintenance kit – RSSR outside 61
12.5 Maintenance kit – RSSR inside 61
12.6 Overhaul kit – maintenance level 3 61
12.7 V-belt kit 62
12.8 Exhaust valve kit 62
12.9 Set of vanes 62
12.10 Cooling water controller 62
13 Accessories 63
13.1 Accessory information 63
13.2 Ordering accessories 63
14 Technical data and dimensions 66
14.1 General 66
14.2 Substances in contact with the media 66
14.3 Technical data 67
14.4 Dimensions 68
EC Declaration of Conformity 70
UK Declaration of Conformity 71
Table of contents
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List of tables
Tbl. 1: Stickers on product 8
Tbl. 2: Abbreviations used in this document 9
Tbl. 3: Limits of use of product 15
Tbl. 4: Features of the rotary vane pumps 19
Tbl. 5: Requirements on the cooling water composition 25
Tbl. 6: Settings for the motor protection switch for BA 251 28
Tbl. 7: Settings for the motor protection switch for BA 501 28
Tbl. 8: Settings for v-belt bias 31
Tbl. 9: Maintenance intervals 44
Tbl. 10: Settings for v-belt bias 53
Tbl. 11: Troubleshooting for rotary vane pumps 58
Tbl. 12: Spare part packages 61
Tbl. 13: Accessories for BA 251 64
Tbl. 14: Accessories for BA 501 64
Tbl. 15: Consumables 65
Tbl. 16: Conversion table: Pressure units 66
Tbl. 17: Conversion table: Units for gas throughput 66
Tbl. 18: Materials that make contact with the process media 66
Tbl. 19: Technical data 68
List of tables
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List of figures
Fig. 1: Position of the stickers on the product 9
Fig. 2: Structure of the rotary vane pump 17
Fig. 3: Rotary vane vacuum pump functional principle 18
Fig. 4: Transporting vacuum pump 20
Fig. 5: Vacuum connection with flange connection 23
Fig. 6: Exhaust connection with flange connection 24
Fig. 7: Connecting the cooling water supply 26
Fig. 8: Delta connection for low voltage 27
Fig. 9: Star circuit for high voltage 27
Fig. 10: Connection example with PTC thermistor tripping unit 29
Fig. 11: Removing belt guard 31
Fig. 12: Checking v-belt bias with load hook 31
Fig. 13: Mounting belt guard temporarily 32
Fig. 14: Positions of protective coverings viewed from inside 33
Fig. 15: Mounting belt guard to base frame 34
Fig. 16: Mounting protective coverings to belt guard 35
Fig. 17: Cooling water controller of the rotary vane pump 37
Fig. 18: Setting cooling water controller 39
Fig. 19: Top of gas ballast valve 40
Fig. 20: Flange with valve and locking screw on operating fluid storage tank 47
Fig. 21: Oiler and locking screw on a bearing shield 48
Fig. 22: Gas ballast valve 50
Fig. 23: Top of gas ballast valve 52
Fig. 24: Checking v-belt bias with load hook 53
Fig. 25: Dimensions of UnoLine Plus BA 251 68
Fig. 26: Dimensions of UnoLine Plus BA 501 69
List of figures
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1 About this manual
IMPORTANT
Read carefully before use.
Keep the manual for future consultation.
1.1 Validity
This operating instructions is a customer document of Pfeiffer Vacuum. The operating instructions de-
scribe the functions of the named product and provide the most important information for the safe use of
the device. The description is written in accordance with the valid directives. The information in this op-
erating instructions refers to the product's current development status. The document shall remain valid
provided that the customer does not make any changes to the product.
1.1.1 Applicable documents
Designation Document
Declaration of conformity A component of these operating instructions
1.1.2 Variants
These instructions are applicable for UnoLine Plus vacuum pumps.
●BA 251
●BA 501
1.2 Target group
These operating instructions are aimed at all persons performing the following activities on the product:
●Transportation
●Setup (Installation)
●Usage and operation
●Decommissioning
●Maintenance and cleaning
●Storage or disposal
The work described in this document is only permitted to be performed by persons with the appropriate
technical qualifications (expert personnel) or who have received the relevant training from Pfeiffer Vac-
uum.
1.3 Conventions
1.3.1 Instructions in the text
Usage instructions in the document follow a general structure that is complete in itself. The required ac-
tion is indicated by an individual step or multi-part action steps.
Individual action step
A horizontal, solid triangle indicates the only step in an action.
►This is an individual action step.
Sequence of multi-part action steps
The numerical list indicates an action with multiple necessary steps.
1. Step 1
2. Step 2
3. ...
1.3.2 Pictographs
Pictographs used in the document indicate useful information.
About this manual
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Note
Tip
1.3.3 Stickers on product
This section describes all the stickers on the product along with their meanings.
D-35614 Asslar
Mod.
P/N
S/N
BA 251
PK C42 xxx
xxxxxxxx
Oil
S(N )
2
n
Mass
230/400 V ±5% 50 Hz
265/460 V ±5% 60 Hz
Made in Germany 2021/10
P3 17l
max. 250 m /h
max. 490 1/min
3
570 kg
D-35614 Asslar
Mod.
P/N
S/N
BA 501
PK C43 xxx
xxxxxxxx
Oil
S(N )
2
n
Mass
400/690 V ±5% 50 Hz
460V ±5% 60 Hz
Made in Germany 2021/10
P3 45l
max. 500 m /h
max. 345 1/min
3
1100 kg
Rating plate (example)
Rating plate of the rotary vane vacuum pump
Motor rating plate (not shown)
ACHTUNG!
Vor dem Einfüllen des Öles Drehrichtung der
Pumpe prüfen!
ATTENTION!
Before filling in the oil check direction of
rotation of the pump!
ATTENTION!
Avant remplir l’huile vérifier le sense de rotation
de la pompe!
Sticker (yellow) – three-phase motor only
Attention! Check the direction of rotation of the rotary vane
pump before filling with operating fluid
Vor Inbetriebnahme Pumpe mit Öl
füllen
Fill the pump with oil before putting
into operation
Remplir la pompe d’huile avant la mise
en route
Sticker (red)
Fill rotary vane pump with operating fluid before commis-
sioning
Achtung!
nur mit F5 befüllen
Attention!
only F5 to be used
Sticker (orange) – special operating fluid only
Caution: fill with F5 only
Warning hot surface
This sticker warns of injuries caused by high temperatures
as a result of contact without protection during operation.
Warning: Danger of drawing in at the belt drive
This sticker warns against injuries that can result from
reaching into the belt drive during operation or maintenance
work.
Arrow indicating direction of rotation
The direction of rotation arrow indicates the required motor
rotation direction.
Tbl. 1: Stickers on product
About this manual
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7
12
6
3
4,5
Fig. 1: Position of the stickers on the product
1 Hot surface warning sign 5 Sticker: Check direction of rotation
2 Rating plate of the rotary vane vacuum pump 6 Arrow indicating direction of rotation
3 Notice: Fill up operating fluid 7 Warning symbol: Danger of drawing in at the
belt drive
4 Notice: Operating fluid F5 optional
1.3.4 Abbreviations
Abbreviation Explanation
OI Operating instructions
DN Nominal diameter (diamètre nominal)
FKM Fluorinated rubber
INRated current
Imax Maximum current
ISO Flange: Connection in accordance with ISO 1609 and ISO 2861
PE Protective earth (earthed conductor)
ODK Operating fluid return line (oil drain kit)
PTC Temperature-dependent resistor (positive temperature coefficient)
OME Oil mist filter (oil mist eliminator)
RSSR Radial shaft seal ring
WAF Width Across Flats
MM Maintenance manual
Tbl. 2: Abbreviations used in this document
1.3.5 Trademark proof
●Loctite® is a trademark of HENKEL IP & HOLDING GMBH.
About this manual
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2 Safety
2.1 General safety information
The following 4 risk levels and 1 information level are taken into account in this document.
DANGER
Immediately pending danger
Indicates an immediately pending danger that will result in death or serious injury if not observed.
►Instructions to avoid the danger situation
WARNING
Potential pending danger
Indicates a pending danger that could result in death or serious injury if not observed.
►Instructions to avoid the danger situation
CAUTION
Potential pending danger
Indicates a pending danger that could result in minor injuries if not observed.
►Instructions to avoid the danger situation
NOTICE
Danger of damage to property
Is used to highlight actions that are not associated with personal injury.
►Instructions to avoid damage to property
Notes, tips or examples indicate important information about the product or about this docu-
ment.
2.2 Safety instructions
All safety instructions in this document are based on the results of the risk assessment carried out in
accordance with Machinery Directive 2006/42/EC Annex I and EN ISO 12100 Section 5. Where applica-
ble, all life cycle phases of the product were taken into account.
Risks during transport
WARNING
Risk of serious injury from swinging, toppling or falling objects
During transport, there is a risk of crushing and impact on swinging, toppling or falling objects. There
is a risk of injuries to limbs, up to and including bone fractures and head injuries.
►Secure the danger zone if necessary.
►Pay attention to the center of gravity of the load during transport.
►Ensure even movements and moderate speeds.
►Observe safe handling of the transport devices.
►Avoid sloping attachment aids.
►Never stack products.
►Wear protective equipment, e.g. safety shoes.
Safety
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Risks during installation
DANGER
Danger to life from electric shock
Touching exposed and voltage-bearing elements causes an electric shock. Improper connection of
the mains supply leads to the risk of touchable live housing parts. There is a risk to life.
►Before the installation, check that the connection leads are voltage-free.
►Make sure that electrical installations are only carried out by qualified electricians.
►Provide adequate grounding for the device.
►After connection work, carry out an earthed conductor check.
WARNING
Danger of injury from exposed belt drive
During maintenance and installation work, the belt guard and, if necessary, reach-in protection of the
belt drive are removed in the motor area. There is danger of crushing hands or fingers.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Wear tight-fitting clothing during maintenance work.
►Do not expose any body parts to the operating range of the belt drive.
►Before switching on, check that all protective devices have been installed correctly.
WARNING
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
►Observe the application instructions and precautions.
►Do not allow tobacco products to come into contact with the operating fluid.
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the vacuum pump
can increase to above 70 °C. If access to the vacuum pump is unrestricted, there is a danger of burns
due to contact with hot surfaces.
►Install suitable touch protection if the vacuum pump is accessible to untrained persons.
►Allow the vacuum pump to cool down before carrying out any work.
►Contact Pfeiffer Vacuum for suitable touch protection in system solutions.
Risks during operation
WARNING
Danger of poisoning due to toxic process media escaping from the exhaust pipe
During operation with no exhaust line, the vacuum pump allows exhaust gases and vapors to escape
freely into the air. There is a risk of injury and fatality due to poisoning in processes with toxic process
media.
►Observe the pertinent regulations for handling toxic process media.
►Safely purge toxic process media via an exhaust line.
►Use appropriate filter equipment to separate toxic process media.
WARNING
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
►Observe the application instructions and precautions.
►Do not allow tobacco products to come into contact with the operating fluid.
Safety
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CAUTION
Risk of injury from entrapment of body parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. A risk
exists of minor injury to fingers and hands (e.g., hematoma), from direct contact with the vacuum
flange.
►Maintain sufficient distance to the vacuum flange during all work.
►Safely disconnect motor from the mains.
►Secure the motor against re-start.
CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or inadequate exhaust pipes lead to dangerous situations, e.g. increased exhaust pressure.
There is a danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and
damage to the unit cannot be excluded.
►Route the exhaust line without shut-off units.
►Observe the permissible pressures and pressure differentials for the product.
►Check the function of the exhaust line on a regular basis.
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the vacuum pump
can increase to above 70 °C. If access to the vacuum pump is unrestricted, there is a danger of burns
due to contact with hot surfaces.
►Install suitable touch protection if the vacuum pump is accessible to untrained persons.
►Allow the vacuum pump to cool down before carrying out any work.
►Contact Pfeiffer Vacuum for suitable touch protection in system solutions.
Risks during maintenance, decommissioning and malfunctions
WARNING
Danger of injury from exposed belt drive
During maintenance and installation work, the belt guard and, if necessary, reach-in protection of the
belt drive are removed in the motor area. There is danger of crushing hands or fingers.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Wear tight-fitting clothing during maintenance work.
►Do not expose any body parts to the operating range of the belt drive.
►Before switching on, check that all protective devices have been installed correctly.
WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
WARNING
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
►Observe the application instructions and precautions.
►Do not allow tobacco products to come into contact with the operating fluid.
Safety
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WARNING
Health hazard and risk of environmental damage from toxic contaminated operating fluid
Toxic process media can cause operating fluid contamination. When changing the operating fluid,
there is a health hazard due to contact with poisonous substances. Illegal disposal of toxic substan-
ces causes environmental damage.
►Wear suitable personal protective equipment when handling these media.
►Dispose of the operating fluid according to locally applicable regulations.
WARNING
Danger to life from electric shock in the event of a fault
In the event of a fault, devices connected to the mains may be live. There is a danger to life from
electric shock when making contact with live components.
►Always keep the mains connection freely accessible so you can disconnect it at any time.
CAUTION
Scalding from hot operating fluid
Danger of burns when draining operating fluid if it comes into contact with the skin.
►Wear protective equipment.
►Use a suitable collection receptacle.
CAUTION
Risk of injury from entrapment of body parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. A risk
exists of minor injury to fingers and hands (e.g., hematoma), from direct contact with the vacuum
flange.
►Maintain sufficient distance to the vacuum flange during all work.
►Safely disconnect motor from the mains.
►Secure the motor against re-start.
CAUTION
Danger of burns on hot surfaces
In the event of a fault, the surface temperature of the vacuum pump can increase to above 105 °C.
►Allow the vacuum pump to cool down before carrying out any work.
►Wear personal protective equipment if necessary.
CAUTION
Danger of injury from moving parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. There
is a risk of injury to fingers and hands if they enter the operating range of rotating parts.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Dismantle the vacuum pump for inspection, away from the system if necessary.
Safety
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Risks during disposal
WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
2.3 Safety precautions
Duty to provide information on potential dangers
The product holder or user is obliged to make all operating personnel aware of dangers
posed by this product.
Every person who is involved in the installation, operation or maintenance of the product
must read, understand and adhere to the safety-related parts of this document.
Infringement of conformity due to modifications to the product
The Declaration of Conformity from the manufacturer is no longer valid if the operator
changes the original product or installs additional equipment.
●Following the installation into a system, the operator is required to check and re-evalu-
ate the conformity of the overall system in the context of the relevant European Direc-
tives, before commissioning that system.
General safety precautions when handling the product
►Observe all applicable safety and accident prevention regulations.
►Check that all safety measures are observed at regular intervals.
►Do not expose body parts to the vacuum.
►Always ensure a secure connection to the earthed conductor (PE).
►Never disconnect plug connections during operation.
►Observe the above shutdown procedures.
►Keep lines and cables away from hot surfaces (> 70 °C).
►Never fill or operate the unit with cleaning agents or cleaning agent residues.
►Do not carry out your own conversions or modifications on the unit.
►Observe the unit protection class prior to installation or operation in other environments.
►Provide suitable touch protection, if the surface temperature exceeds 70 °C.
2.4 Limits of use of product
Installation location ● Indoors, protected from dust deposits
● Outdoors, protected from direct weather influen-
ces
Installation altitude max. 1000 m above sea level 1)
Protection class (according to IEC 61010) I
Degree of pollution (according to IEC 61010) 2
Overvoltage category II
Protection class IP55
permissible angle of inclination ± 1 °
Ambient temperature +12 ℃ to +40 ℃
1) When installing at altitudes > 1000 m above sea level, reduce the rated power of the motor or limit the ambient
temperature, as the vacuum pump will heat up more.
Safety
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Relative humidity of air max. 85%
Pumped medium intake temperature, max. +40 ℃
Exhaust pressure of the vacuum pump ≤ 1500 hPa absolute
Exhaust pressure at OME max. atmospheric pressure
Tbl. 3: Limits of use of product
2.5 Proper use
►Use the vacuum pump for vacuum generation only.
►Use the vacuum pump as a standalone vacuum pump or as pre-stage to roots pumps.
►When pumping media with an oxygen concentration level of ≥ 21 %, only use perfluorinated, syn-
thetic oils (F4, F5, A113) as operating fluid.
►Adhere to the installation, commissioning, operating, and maintenance instructions.
►Do not use any accessory parts other than those recommended by Pfeiffer Vacuum.
2.6 Foreseeable improper use
Improper use of the product invalidates all warranty and liability claims. Any use that is counter to the
purpose of the product, whether intentional or unintentional, is regarded as improper use; in particular:
●Pumping of corrosive media (exception: C version of the rotary vane pumps)
●Pumping radioactive media
●Pumping of gases that introduce an ignition source to the suction chamber
●Pumping of gases that contain contamination such as particles, dust, or condensate
●Pumping explosive media
●Pumping of media with a propensity to sublimation
●Pumping of fluids
●Use of the vacuum pump in areas with an explosion hazard
●Use of the vacuum pump outside the specified range of application
●Using for pressure generation
●Use in strong electrical, magnetic, or electromagnetic fields
●Connection to vacuum pumps or equipment which are not suitable for this purpose according to
their operating instructions
●Connection to devices with exposed live parts
●Use of accessories or spare parts not listed in these instructions
●Use of operating fluids other than those specified by Pfeiffer Vacuum
●Use of D2 or mineral oil as operating fluid with an oxygen concentration level of > 21%
Mineral oils are combustible and ignite at high temperatures and when they come into contact with
pure oxygen. These oils oxidize heavily and thus lose their lubricating capacity.
2.7 Personnel qualification
The work described in this document may only be carried out by persons who have appropriate profes-
sional qualifications and the necessary experience or who have completed the necessary training as
provided by Pfeiffer Vacuum.
Training people
1. Train the technical personnel on the product.
2. Only let personnel to be trained work with and on the product when under the supervision of
trained personnel.
3. Only allow trained technical personnel to work with the product.
4. Before starting work, make sure that the commissioned personnel have read and understood
these operating instructions and all applicable documents, in particular the safety, maintenance
and repair information.
Safety
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2.7.1 Ensuring personnel qualification
Specialist for mechanical work
Only a trained specialist may carry out mechanical work. Within the meaning of this document, special-
ists are people responsible for construction, mechanical installation, troubleshooting and maintenance
of the product, and who have the following qualifications:
●Qualification in the mechanical field in accordance with nationally applicable regulations
●Knowledge of this documentation
Specialist for electrotechnical work
Only a trained electrician may carry out electrical engineering work. Within the meaning of this docu-
ment, electricians are people responsible for electrical installation, commissioning, troubleshooting, and
maintenance of the product, and who have the following qualifications:
●Qualification in the electrical engineering field in accordance with nationally applicable regulations
●Knowledge of this documentation
In addition, these individuals must be familiar with applicable safety regulations and laws, as well as the
other standards, guidelines, and laws referred to in this documentation. The above individuals must
have an explicitly granted operational authorization to commission, program, configure, mark, and earth
devices, systems, and circuits in accordance with safety technology standards.
Trained individuals
Only adequately trained individuals may carry out all works in other transport, storage, operation and
disposal fields. Such training must ensure that individuals are capable of carrying out the required activi-
ties and work steps safely and properly.
2.7.2 Personnel qualification for maintenance and repair
Advanced training courses
Pfeiffer Vacuum offers advanced training courses to maintenance levels 2 and 3.
Adequately trained individuals are:
●Maintenance level 1
─Customer (trained specialist)
●Maintenance level 2
─Customer with technical education
─Pfeiffer Vacuum service technician
●Maintenance level 3
─Customer with Pfeiffer Vacuum service training
─Pfeiffer Vacuum service technician
2.7.3 Advanced training with Pfeiffer Vacuum
For optimal and trouble-free use of this product, Pfeiffer Vacuum offers a comprehensive range of
courses and technical trainings.
For more information, please contact Pfeiffer Vacuum technical training.
Safety
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3 Product description
3.1 Function
The water-cooled UnoLine Plus rotary vane pumps are single-stage vacuum pumps. The vacuum
pumps are equipped with an operating fluid storage tank with return line. The spring-loaded pump
valves are made of wear proof stainless steel. Thanks to their robust design, the pumps are especially
suitable for vacuum generation in industrial applications
1
23
4
5
6
7
8 9
10
11
12
13
14
151617
20
22
23
24
18
19
21
Fig. 2: Structure of the rotary vane pump
1 Eye bolts 13 Gas ballast valve
2 Dome 14 Oilers (2×)
3 Closing cap for exhaust flange 15 Pump body
4 Filler screw, 1” thread 16 Cooling water outlet
5 Operating fluid storage tank with return line 17 Base frame
6 Connection for an external oil filter, optional 18 Holes for forklift truck
7 Operating fluid and condensate drain 19 Mounting hole
8 Sight glass 20 Motor
9 Noise reduction 21 Cooling water controller
10 Level switch connection, optional 22 Belt guard
11 Temperature sensor 23 Horizontal vacuum connection with locking
flange
12 Cooling water outlet 24 Vertical vacuum connection
3.1.1 Actuator
The rotary vane pump has a belt drive with different drive belt pulley diameters for 50 Hz and 60 Hz
motors. Rotary vane pump and motor are mounted together on a base frame.
3.1.2 Gas ballast
The gas ballast unit is used to blend ambient air or inert gas with the process gas in the pumping sys-
tem. Increasing the air content compresses and expels a pumped gas/vapor mixture within specific lim-
its, without causing condensation in the suction chamber.
Product description
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3.1.3 Cooling water controller
The cooling water controller controls the flow rate of the cooling water as a function of the pump temper-
ature, so that the rotary vane pump remains at operating temperature. The cooling water controller is a
continuously operating control valve controlled by the temperature-dependent refrigerant. The thermal
sensor is immersed in the operating fluid and connected to the bellows via a capillary tube. The cooling
water controller has been preset ex factory. The temperature can be set by turning the adjusting disk.
3.1.4 Venting or measuring connection
The venting or measuring connection is vacuum sealed with a blank flange ex factory.
Connection options
●Manually or electrically activated valve for ventilating the rotary vane pump when switching off
●Vacuum gage for pressure measurement
●Connection for the operating fluid return
3.1.5 Operating fluid, oil
The rotary vane pump circulates the operating fluid to separate condensate, contaminants and dust par-
ticles from the operating fluid and deposit them in the sump of the storage tank. This means that the
rotary vane pumps have a very large operating fluid reservoir.
The pump oil, also known as operating fluid, fulfills various tasks in a rotary vane pump:
●lubrication of all moving parts
●filling part of the dead volume under the exhaust valve
●sealing the gap between the intake and exhaust channel, and between the vanes and the working
chamber
●ensuring an optimal temperature balance through heat transfer
3.2 Operating principle
1
3
4
5
62
Fig. 3: Rotary vane vacuum pump functional principle
1 Housing 4 Vane
2 Vacuum flange (inlet) 5 Suction chamber
3 Rotor 6 Exhaust (outlet)
The rotary vane pump is an oil-sealed rotary displacement pump. The pumping system comprises the
housing, the eccentrically mounted rotor, and the centrifugal and spring-loaded radially sliding vanes,
which divide the suction chamber into multiple chambers. The volume of each chamber changes period-
ically as the rotor rotates. This causes the gas to be drawn in at the vacuum flange, and compressed in
the suction chamber by the rotation of the rotor until the exhaust valve opens against the atmospheric
pressure at the outlet and expels the gas. The exhaust valve is oil-sealed. When the valve opens, a
small quantity of oil penetrates into the suction chamber. In addition to lubrication, this also causes the
gaps between the rotor, stator, and vanes to seal.
Product description
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3.3 Product features
Pump type Characteristics Pumping speed category
BA 251 Standard version on base frame 250 m3/h
BA 501 Standard version on base frame 500 m3/h
Tbl. 4: Features of the rotary vane pumps
3.4 Identifying the product
►To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
►Observe the motor-specific data on the motor rating plate attached separately.
3.5 Scope of delivery
●Rotary vane pump
●Operating fluid P3
●Centering ring with cone strainer and o-ring for the connection flange
●Closing cap for both connection flanges
●Locking screw for cooling water drain
●Protective coverings and protection screen for the belt drive
●Operating instructions
Product description
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4 Transportation and Storage
4.1 Transporting vacuum pump
WARNING
Risk of serious injury from swinging, toppling or falling objects
During transport, there is a risk of crushing and impact on swinging, toppling or falling objects. There
is a risk of injuries to limbs, up to and including bone fractures and head injuries.
►Secure the danger zone if necessary.
►Pay attention to the center of gravity of the load during transport.
►Ensure even movements and moderate speeds.
►Observe safe handling of the transport devices.
►Avoid sloping attachment aids.
►Never stack products.
►Wear protective equipment, e.g. safety shoes.
Preparations for transport
Pfeiffer Vacuum recommends keeping the transport packaging and original protective cov-
er.
Safe transport of the product
►Observe the weight specified on the packaging.
►Use personal protective equipment, e.g. safety shoes.
►Use transport equipment, e.g. fork lift truck or crane.
►Where possible, always transport or ship the product in the original packaging.
►Be mindful of transport damage.
►Always place the product on an adequately sized, level surface.
2
1
3
Fig. 4: Transporting vacuum pump
1 Vacuum connection protective cover 3 Exhaust connection protective cover
2 Eye bolt
Transporting vacuum pump without packaging
1. Unpack the vacuum pump.
2. To protect the inside of the pump, leave both closing caps on the connection flanges during trans-
port.
3. Pay attention to the correct use and fastening of the lifting equipment.
4. For lifting, use the eye bolts intended for this purpose on the top of the pump.
–Rotary vane pump BA 251 has only one eye bolt.
5. Alternatively: Lift up the vacuum pump by means of a forklift truck, using the two holes on the side
of the base frame.
Transportation and Storage
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