Pfeiffer Vacuum Hena 26 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
HENA 26 | 41
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 8
1.3.3 Stickers on the product 8
1.3.4 Abbreviations 9
1.4 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 the product 15
2.5 Proper use 15
2.6 Foreseeable improper use 15
2.7 Personnel qualification 16
2.7.1 Ensuring personnel qualification 16
2.7.2 Personnel qualification for maintenance and repair 16
3 Product description 17
3.1 Function 17
3.1.1 Operating fluid 18
3.1.2 Cooling 18
3.1.3 Gas ballast system 18
3.1.4 Operating fluid return via the float valve 18
3.2 Identifying the product 19
3.3 Product features 19
3.4 Scope of delivery 19
4 Transportation and Storage 20
4.1 Transporting the vacuum pump 20
4.2 Storing the vacuum pump 21
5 Installation 22
5.1 Installing the vacuum pump 22
5.2 Connecting the vacuum side 22
5.3 Connecting the exhaust side 23
5.4 Filling the operating fluid 24
5.5 Establishing mains connection 25
5.5.1 Connecting a single phase motor with 6-pin terminal board 26
5.5.2 Connect three phase motor with 6-pin terminal board 26
5.5.3 Connect three phase motor with 9-pin terminal board 27
5.5.4 Checking the direction of rotation 28
5.5.5 Setting the motor protection switch 28
5.5.6 Frequency inverter for vacuum pumps with 3-phase motor 29
5.5.7 Connecting the PTC thermistor tripping unit 29
6 Operation 31
6.1 Putting the vacuum pump into operation 31
6.2 Switching on the vacuum pump 31
6.3 Operating modes 32
6.4 Operating the rotary vane pump with gas ballast 33
6.5 Operating the rotary vane pump with manual gas ballast valve 33
Table of contents
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6.6 Refilling operating fluid 34
6.7 Switching off the vacuum pump 35
7 Maintenance 36
7.1 Maintenance instructions 36
7.2 Checklist for inspection and maintenance 37
7.3 Changing the operating fluid 38
7.3.1 Determine degree of aging of P3 operating fluid 38
7.3.2 Changing the operating fluid 39
7.3.3 Rinsing and cleaning the rotary vane vacuum pump 40
7.3.4 Changing the operating fluid filter 40
7.4 Change the exhaust filter in the operating fluid separator 41
7.4.1 Dismantling the exhaust filters 42
7.4.2 Mounting the exhaust filters 43
7.5 Cleaning the gas ballast filter 44
7.6 Cleaning the operating fluid return line 44
7.7 Cleaning the intake strainer 46
8 Decommissioning 48
8.1 Shutting down for longer periods 48
8.2 Recommissioning 48
9 Recycling and disposal 49
9.1 General disposal information 49
9.2 Dispose of rotary vane pump 49
10 Malfunctions 50
11 Service solutions by Pfeiffer Vacuum 52
12 Spare parts 54
12.1 Operating fluids – Maintenance level 1 54
12.2 Maintenance kit – maintenance level 1 54
12.3 Overhaul kit – maintenance level 3 54
12.4 Set of seals 54
12.5 Set of vanes 54
12.6 Ordering spare parts packages 54
13 Accessories 56
13.1 Accessory information 56
13.2 Ordering accessories 56
14 Technical data and dimensions 58
14.1 General 58
14.2 Technical data 58
14.3 Dimensions 61
Declaration of conformity 64
Table of contents
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List of tables
Tbl. 1: Stickers on the product 8
Tbl. 2: Abbreviations used in this document 9
Tbl. 3: Limits of use of the product 15
Tbl. 4: Features of the rotary vane pumps 19
Tbl. 5: Motor protection switch settings for Hena 26 global motor 28
Tbl. 6: Motor protection switch settings for Hena 26 Asian motor 28
Tbl. 7: Motor protection switch settings for Hena 41 global motor 29
Tbl. 8: Motor protection switch settings for Hena 41 Asian motor 29
Tbl. 9: Maintenance intervals 37
Tbl. 10: Troubleshooting for rotary vane pumps 51
Tbl. 11: Consumables 54
Tbl. 12: Spare parts packages 55
Tbl. 13: Accessories for Hena 26 | Hena 41 57
Tbl. 14: Conversion table: Pressure units 58
Tbl. 15: Conversion table: Units for gas throughput 58
Tbl. 16: Technical data Hena 26 | Single phase motor 59
Tbl. 17: Technical data Hena 26 | Three phase motor 60
Tbl. 18: Technical data | Hena 41 | Three phase motor 60
List of tables
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List of figures
Fig. 1: Position of the stickers on the product 8
Fig. 2: Operating principle 17
Fig. 3: Structure of the rotary vane pump 18
Fig. 4: Transporting the vacuum pump 20
Fig. 5: Minimum distances to the lateral limitations, top view 22
Fig. 6: Filling the operating fluid 25
Fig. 7: Wiring diagram for single phase motor 26
Fig. 8: Delta connection 26
Fig. 9: Star circuit 27
Fig. 10: Terminal board for low voltage 27
Fig. 11: Motor winding and terminal board for high voltage 27
Fig. 12: Connection example with PTC thermistor tripping unit 29
Fig. 13: Operating the vacuum pump with gas ballast system 33
Fig. 14: Operating the rotary vane pump with manual gas ballast valve 33
Fig. 15: Refilling operating fluid 34
Fig. 16: Draining the operating fluid 40
Fig. 17: Change operating fluid filter 41
Fig. 18: Dismantling the exhaust filters 43
Fig. 19: Cleaning the gas ballast filter 44
Fig. 20: Operating fluid return with float valve 45
Fig. 21: Dismantling / assembling the intake strainer 46
Fig. 22: Dimensions Hena 26 | Single phase motor 61
Fig. 23: Dimensions Hena 26 | Three phase motor 62
Fig. 24: Dimensions Hena 41 | Three phase motor 63
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
Document Number
Declaration of conformity A component of these instructions
You can find this document in the Pfeiffer Vacuum Download Center.
1.1.2 Variants
These instructions apply to HenaLine vacuum pumps.
Pump type Pump version
Hena 26 Standard version of rotary vane pump
Hena 41 Standard version of rotary vane pump
1.2 Target group
This operating instructions is intended for persons who
●transport,
●installation,
●operate,
●decommissioning,
●servicing and cleaning,
●storage or disposal.
The work described in this document may only be carried out by persons who have appropriate profes-
sional qualifications (experts).
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. ...
About this manual
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1.3.2 Pictographs
The pictographs used in the document indicate useful information.
Note
Tip
true
false
1.3.3 Stickers on the product
This section describes all the stickers on the product along with their meaning.
Made in Germany
D-35614 Asslar
Vacuum Pump
Hena 41
= 1.5 hPa (mbar)
pabs
nmax = 1150 – 1800 min-1
= P3Oil
= DEM12912360SN
V
max = 50 m3/h
= 49.5 kgm
= 1 LOil quantity
Year
2020
1 ~ 380 – 400 V ±5 %
50/60 Hz 9A IP55
Rating plate (example)
Rating plate of the rotary vane pump
Motor rating plate (not shown)
Warning hot surface
This sticker warns of injuries caused by high temperatures as a
result of contact without protection during operation.
Electrical voltage warning
The sticker warns of the risk of electric shock when working with
the housing open.
No stepping on surface
This sticker prohibits the use of the vacuum pump as a climbing
aid.
Arrow indicating direction of rotation
The direction of rotation arrow indicates the direction of rotation
of the motor.
Tbl. 1: Stickers on the product
1
2
3
Fig. 1: Position of the stickers on the product
1 Operating instructions note 3 Rating plate of the rotary vane pump
2 Hot surface warning sign
About this manual
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1.3.4 Abbreviations
Abbreviation Meaning in this document
OI Operating instructions
N.N. Mean sea level
PE Earthed conductor (protective earth)
WAF Width across flats
RSSR Radial shaft seal ring
Tbl. 2: Abbreviations used in this document
1.4 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 DIN EN ISO 12100 Section 5. Where ap-
plicable, 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 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
Tilting danger! Serious injury due to tilting of the product
There is a danger of the vacuum pump not attached tipping over due to changes in the center of
gravity or incorrect loading. Serious injuries due to trapping or crushing of limbs, e.g. feet, are the re-
sult.
►Do not use the vacuum pump as a climbing aid.
►Do not exert any force on the product.
►Ensure that the product has a safe centre of gravity, when mounting components.
►Wear protective equipment , e.g. protective shoes
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.
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
Risk of burns from ejected hot oil mist
During operation, hot pressurized oil mist escapes from the operating fluid separator.
►Only operate the vacuum pump with the filler screw securely fitted.
►Open the locking screws on the separator only while the vacuum pump is switched off.
Safety
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WARNING
Tilting danger! Serious injury due to tilting of the product
There is a danger of the vacuum pump not attached tipping over due to changes in the center of
gravity or incorrect loading. Serious injuries due to trapping or crushing of limbs, e.g. feet, are the re-
sult.
►Do not use the vacuum pump as a climbing aid.
►Do not exert any force on the product.
►Ensure that the product has a safe centre of gravity, when mounting components.
►Wear protective equipment , e.g. protective shoes
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.
►Provide suitable touch protection.
Risks during maintenance, decommissioning and malfunctions
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 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.
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
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
Tilting danger! Serious injury due to tilting of the product
There is a danger of the vacuum pump not attached tipping over due to changes in the center of
gravity or incorrect loading. Serious injuries due to trapping or crushing of limbs, e.g. feet, are the re-
sult.
►Do not use the vacuum pump as a climbing aid.
►Do not exert any force on the product.
►Ensure that the product has a safe centre of gravity, when mounting components.
►Wear protective equipment , e.g. protective shoes
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
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 vessel.
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.
Safety
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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.
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.
Safety
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2.4 Limits of use of the product
Parameter Hena 26 Hena 41
Installation location ● Indoors, protected against:
─ dust deposits
─ falling objects
─ fire-fighting water
● Outdoors, protected against:
─ falling objects
─ direct influence of weather such as rain, splash water, strong
drafts and sunlight
─ fire-fighting water
─ lightning strike
Installation altitude max. 1000 m above sea level
At installation heights > 1000 m above sea level, the rated power of the
motor must be reduced or the ambient temperature limited due to in-
creased heating of the vacuum pump.
Orientation horizontal
permissible angle of incli-
nation ±1 °
Pumped medium intake
temperature, max. +40 °C
Ambient temperature with
synthetic operating fluid
(P3)
5 ℃ to +35 ℃
Ambient temperature with
synthetic operating fluid
(D1)
5 ℃ to +40 ℃
Relative air humidity max. 85 %
Permissible operating
pressure range during con-
tinuous operation
≤ 800 hPa
Exhaust pressure Atmospheric pressure
Tbl. 3: Limits of use of the product
2.5 Proper use
►Use the vacuum pump for vacuum generation only.
►When pumping media with an oxygen concentration level of ≥ 21 %, only use perfluorinated, syn-
thetic oils (YLC 250 B, 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 misuse, in particular:
●Pumping of corrosive media
●Pumping radioactive media
●Pumping of gases that introduce an ignition source to the suction chamber
●Pumping of gases that contain impurities such as particles, dust, or condensate
●Pumping of explosive media
●Pumping of media with a propensity to sublimation
●Pumping of fluids
●Use of the vacuum pump in potentially explosive atmospheres
●Use of the vacuum pump outside the specified area of application
●Use 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
Safety
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●Connection to devices with exposed live parts
●Use of accessories or spare parts not listed in these operating instructions
●Use of operating fluids other than those specified by Pfeiffer Vacuum
●Use of D1 or mineral oil as operating fluid with an oxygen concentration level of > 21 %. Mineral
oils are combustible and ignite in high temperatures and when they come into contact with pure
oxygen. This 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.
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.
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 electrical engineering 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 expressly 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
Adequately trained individuals are:
●Maintenance level 1
─Customer with technical education
─Pfeiffer Vacuum service technician
●Maintenance level 3
─Pfeiffer Vacuum service technician
Safety
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3 Product description
3.1 Function
The rotary vane pumps of the HenaLine are single-stage, oil-sealed rotary positive displacement pumps
with air cooling and circulatory lubrication. A non-return valve in the vacuum connection closes the in-
take line automatically when the rotary vane pump is switched off and prevents an operating fluid return
flow. The integrated oil mist filter cleans the conveyed gas and prevents the operating fluid mist from
being emitted at the exhaust. The operating fluid collected in the separator is supplied back to the rotary
vane pump. A filter is also installed on the operating fluid separator for cleaning the operating fluid.
Fig. 2: Operating principle
The rotary vane pump requires operating fluid for sealing the gap, for lubrication and for cooling. The
operating fluid reservoir is on the pressure side of the vacuum pump on the floor of the operating fluid
separator. The pressure differential between the pressure side and suction side automatically causes
operating fluid to be sucked in over the supply lines from the operating fluid separator and injected into
the pumping system. The incoming operating fluid, together with the incoming gas, is pumped through
the rotary vane pump and exhausted into the operating fluid separator as oil mist. Operating fluid that is
separated at the exhaust filters collects in the upper part of the operating fluid separator and is returned
via an operating fluid return line directly to the intake side. The rotary vane pump is cooled by heat radi-
ation from the surface of the vacuum pump, the air flow of the two fans and the pumped gas.
Product description
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1 2
3
6
5
7
8
9
10
11
12
13
4
Fig. 3: Structure of the rotary vane pump
1 Motor 8 Filler screw for operating fluid
2 Motor terminal box 9 Sight glass
3 Crane lug 10 Drain screw
4 Gas ballast filter 11 Rubber-metal bumper
5 Vacuum connection 12 Operating fluid separator
6 Exhaust connection 13 Operating fluid filter
7 Axial fan with oil/air heat exchanger
3.1.1 Operating fluid
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
3.1.2 Cooling
The rotary vane pump is cooled by thermal radiation from its surface, the air flow of the two fans and the
pumped gas.
3.1.3 Gas ballast system
The gas ballast system supplies air to the working chamber of the rotary vane pump periodically at the
beginning of the compression phase. When pumping down vapors, this air prevents condensation within
certain limits in the rotary vane pump. The gas ballast valve affects the final pressure of the rotary vane
pump.
3.1.4 Operating fluid return via the float valve
Function of the operating fluid return
The operating fluid return functions only at an operating pressure of < 800 hPa.
The rotary vane pump is equipped with an operating fluid return as standard. If the operating fluid col-
lected in the operating fluid separator reaches a certain level, a float valve opens and the ejected oper-
ating fluid is returned to the intake port of the vacuum pump.
Product description
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3.2 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.
3.3 Product features
Pump type Characteristics
Hena 26 ● Nominal pumping speed
─50 Hz: 25 m3/h
─60 Hz: 30 m3h
● Vacuum connection and gas outlet: 1 1/4" thread
● Operating fluid return via the float valve
● Gas ballast unit without shut-off valve
Hena 41 ● Nominal pumping speed
─50 Hz: 40 m3/h
─60 Hz: 48 m3h
● Vacuum connection and gas outlet: 1 1/4" thread
● Operating fluid return via the float valve
● Gas ballast unit without shut-off valve
Tbl. 4: Features of the rotary vane pumps
3.4 Scope of delivery
●Rotary vane pump with motor
●Operating fluid
●Locking caps for vacuum and exhaust connection
●Operating instructions
Product description
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4 Transportation and Storage
4.1 Transporting the vacuum pump
WARNING
Risk of serious injury from oscillating, toppling or falling objects
During transport, there is a risk of crushing and impact on oscillating, 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.
►Note the center of gravity of the load during transport.
►Do not lift the vacuum pump via the eye bolt on the motor.
►Ensure harmonious 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.
NOTICE
Equipment damage from operating fluid leaking into the pumping system.
If the vacuum pump is tipped, the operating fluid will overflow into the pumping system, resulting in
the vane breaking when the vacuum pump is switched on.
►Always transport the vacuum pump horizontally or without operating fluid filling.
►Fill in the operating fluid only at the final installation location.
Preparations for transport
Pfeiffer Vacuum recommends keeping the transport packaging and original protective cov-
er.
General information regarding safe transport
1. Observe the weight specified on packaging.
2. Use transport equipment (e.g. fork lift truck or lift truck).
3. Where possible, always transport or ship the product in the original packaging.
4. Be mindful of transport damage.
5. Always place the product on an adequately sized, level surface.
1
Fig. 4: Transporting the vacuum pump
1 Crane lug
Transportation and Storage
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