Pfeiffer Vacuum HENA 50 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
HENA 50 | 70
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.
2/52

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
2 Safety 10
2.1 General safety information 10
2.2 Safety instructions 10
2.3 Safety precautions 15
2.4 Limits of use of the product 15
2.5 Proper use 15
2.6 Foreseeable improper use 16
2.7 Personnel qualification 16
2.7.1 Ensuring personnel qualification 16
2.7.2 Personnel qualification for maintenance and repair 17
2.7.3 Advanced training with Pfeiffer Vacuum 17
3 Product description 18
3.1 Function 18
3.1.1 Operating fluid 18
3.1.2 Cooling 19
3.2 Connections 19
3.3 Identifying the product 19
3.4 Product features 19
3.5 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 23
5.5 Establishing mains connection 25
5.6 Installing a residual current circuit breaker 26
6 “Modbus” protocol 27
7 Operation 28
7.1 Putting the vacuum pump into operation 28
7.2 Switching on the vacuum pump 28
7.3 Operating modes 29
7.4 Operating mode display via LED 30
7.5 Refilling operating fluid 30
7.6 Switching off the vacuum pump 31
8 Maintenance 33
8.1 Maintenance instructions 33
8.2 Checklist for inspection and maintenance 34
Table of contents
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8.3 Changing the operating fluid 35
8.3.1 Draining the operating fluid 37
8.3.2 Filling the operating fluid 37
8.3.3 Rinsing and cleaning the rotary vane vacuum pump 38
8.4 Change exhaust filters in the operating fluid separator 38
8.4.1 Dismantling the exhaust filters 39
8.4.2 Mounting the exhaust filters 39
9 Decommissioning 41
9.1 Shutting down for longer periods 41
9.2 Recommissioning 41
10 Recycling and disposal 42
10.1 General disposal information 42
10.2 Dispose of rotary vane pump 42
11 Malfunctions 43
12 Service solutions by Pfeiffer Vacuum 45
13 Accessories 47
13.1 Accessory information 47
13.2 Ordering accessories 47
14 Technical data and dimensions 48
14.1 General 48
14.2 Technical data 48
14.3 Dimensions 49
Declaration of conformity 51
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: Connection description of the electronic drive unit 19
Tbl. 5: Features of the rotary vane pumps 19
Tbl. 6: Technical requirements for a residual current circuit breaker 26
Tbl. 7: Plug arrangement of the D-Sub socket, 9-pin 27
Tbl. 8: Behavior and meaning of the LEDs 30
Tbl. 9: Maintenance intervals 35
Tbl. 10: Troubleshooting for rotary vane pumps 44
Tbl. 11: Accessories 47
Tbl. 12: Operating fluid 47
Tbl. 13: Conversion table: Pressure units 48
Tbl. 14: Conversion table: Units for gas throughput 48
Tbl. 15: Technical data Hena 50 | Hena 70 49
List of tables
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List of figures
Fig. 1: Position of the stickers on the product 9
Fig. 2: Operating principle 18
Fig. 3: Structure of the rotary vane pump 18
Fig. 4: Transporting the vacuum pump 21
Fig. 5: Minimum distances to the lateral limitations (top view) 22
Fig. 6: Filling the operating fluid 24
Fig. 7: Mains connection 26
Fig. 8: D-Sub socket on electronic drive unit, 9-pin 27
Fig. 9: Refilling operating fluid 31
Fig. 10: Draining the operating fluid 37
Fig. 11: Filling the operating fluid 37
Fig. 12: Dismantling the exhaust filters 39
Fig. 13: Dimensions Hena 50 50
Fig. 14: Dimensions Hena 70 50
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 50 Rotary vane pump
Hena 70
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.
About this manual
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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.
Note
Tip
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 50
= 0.05 hPa (mbar)
pabs
nmax = 1150 – 1800 min-1
= VSI 100Oil
= DEM119400160SN
V
max = 50 m3/h
= 56 kgm
= 1.7 LOil quantity
Year
2020
1 ~ 200 – 240 V ±10 %
50/60 Hz 9A IP20
Rating plate (example)
Rating plate of the rotary vane vacuum pump
Motor rating plate (not shown)
Warning hot surface
This sticker warns of injuries caused by high
temperatures in case of touching without protec-
tion 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.
Operating instructions note
This sticker indicates that these operating in-
structions must be read before performing any
tasks and before plugging in the mains plug.
Arrow indicating direction of rotation
The direction of rotation arrow indicates the di-
rection of rotation of the motor.
Tbl. 1: Stickers on the product
About this manual
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1 2 3
5
4
Fig. 1: Position of the stickers on the product
1 Warning sign for live voltage 4 Hot surface warning sign
2 Operating instructions note 5 Rating plate of the rotary vane vacuum pump
3 Prohibition sign - No stepping on surface
1.3.4 Abbreviations
Abbreviation Meaning in this document
OI Operating instructions
CB Certified body according to IEC (international electrotechnical commission)
DI Digital Input
DO Digital Output
N/A not connected
N.N. Mean sea level
NRTL Nationally Recognized Test Laboratory
PE Earthed conductor (protective earth)
RCCB Residual Current Operated Circuit Breaker
WAF width across flats
MM Maintenance manual
Tbl. 2: Abbreviations used in this document
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 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.
WARNING
Risk of danger to life through missing mains disconnection device
The vacuum pump and electronic drive unit are not equipped with a mains disconnection device
(mains switch).
►Unplug the mains cable in order to disconnect the mains supply.
►Install a residual circuit breaker (RCCB).
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 trapping of body parts due to unexpected automatic startup
With open control input, the motor can start unexpectedly following extrinsic contact, if the mains volt-
age is already applied.
A risk exists of minor injury to fingers and hands (e.g., hematoma), from direct contact with the vac-
uum flange.
►Note the prescribed switch-on procedure for safe startup.
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 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.
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
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
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.
Safety
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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.
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
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
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 receptacle.
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.
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.
Safety
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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 the product
Parameter Hena 50 Hena 70
Installation location ● Indoors, protected from dust deposits
● Outdoors, protected from direct weather influences
Installation altitude max. 2000 m above sea level
Orientation horizontal
permissible angle of inclination ±1 °
Pumped medium intake temperature, max. +40 °C
Ambient temperature +12 ℃ to +40 ℃
Ambient temperature without NRTL plate
and CB certificate
+12 ℃ to +50 ℃
Relative air humidity max. 80 %
Permissible operating pressure range dur-
ing continuous operation
< 20 hPa unlimited
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.
Safety
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2.6 Foreseeable improper use
Improper use of the product invalidates all warranty and liability claims. Improper use is any, even unin-
tended, use, which is contrary to the product purpose; and in particular:
●Pumping of corrosive media
●Pumping radioactive media
●Pumping of condensable vapors
●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 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
●Connection to devices with exposed live parts
●Use of accessories or spare parts not listed in these operating instructions
●Using the vacuum pump as a climbing aid
●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 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.
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.
Safety
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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 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.
Fig. 2: Operating principle
The pumping system is made up of the housing, the eccentrically mounted rotor, and the centrifugally
sliding vanes, which divide the suction chamber into multiple chambers. The volume of each chamber
changes periodically as the rotor rotates. This causes the gas to be continuously drawn in at the vac-
uum connection and compressed in the suction chamber by the rotation of the rotor until the exhaust
valve opens against the atmospheric pressure and the gas leaves the suction chamber.
123
4
5
6
7
8
910 11 12
13
14
Fig. 3: Structure of the rotary vane pump
1 Crane lug 8 LED A1 for pump status during operation
LED A2 for communication status (behind the cover)
2 Control input 9 Electronic drive unit
3 Mains supply plug 10 Operating fluid separator
4 Motor 11 Exhaust filter
5 Filler screw 12 Vacuum connection with DN 40 KF
6 Sight glass 13 Exhaust connection with DN 25 KF
7 Drain screw 14 Vacuum pump axial fan
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
Product description
18/52

●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.
3.2 Connections
The supplied D-Sub mating plug has bridged pins 8 and 9. This enables the vacuum pump to be started
and stopped directly by switching the voltage supply on and off. When the D-Sub mating plug is used,
the vacuum pump always runs at maximum rotation speed.
Connection Description
remote
D-sub socket with 9 pins for connection and configuration of a remote control.
Tbl. 4: Connection description of the electronic drive unit
3.3 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.
3.4 Product features
Pump type Characteristics
Hena 50 ●Nominal pumping speed max. 50 m3/h
● Vacuum and exhaust connection with small flange
● Electronic drive unit
Hena 70 ●Nominal pumping speed max. 70 m3/h
● Vacuum and exhaust connection with small flange
● Electronic drive unit
Tbl. 5: Features of the rotary vane pumps
3.5 Scope of delivery
●Rotary vane vacuum pump with motor
●Operating fluid
●Locking caps for vacuum and exhaust connection
●D-Sub mating plug
●Operating instructions
Product description
19/52

4 Transportation and Storage
4.1 Transporting the 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.
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 personal protective equipment, e.g. safety shoes.
3. Use transport equipment (e.g. fork lift truck or lift truck).
4. Where possible, always transport or ship the product in the original packaging.
5. Be mindful of transport damage.
6. Always place the product on an adequately sized, level surface.
Transporting the vacuum pump with its packaging
1. Observe safe handling of manually operated transport devices.
2. Note the center of gravity of the load.
3. Use a fork lift truck or pallet truck to transport the vacuum pump on a pallet in its packaging.
4. Ensure harmonious movements and moderate speeds.
5. To protect the inside of the pump, leave both protective covers on the connections during trans-
port.
Transportation and Storage
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