Pfeiffer Vacuum HEPTA 950 L User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
HEPTA 950 L
Screw pump with integrated frequency converter

Dear Customer,
Thank you for choosing a Pfeiffer Vacuum product. Your new screw pump is designed to
support you with its performance, perfect operation and without impacting 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 14
2.5 Proper use 14
2.6 Foreseeable improper use 15
2.7 Personnel qualification 15
2.7.1 Ensuring personnel qualification 15
2.7.2 Personnel qualification for maintenance and repair 15
3 Product description 17
3.1 Function 17
3.1.1 Water cooling 17
3.1.2 Temperature monitoring 17
3.1.3 Frequency converter 18
3.1.4 Gas ballast 18
3.1.5 Sealing gas system 18
3.1.6 Silencer 18
3.2 Identifying the product 18
3.3 Product features 18
3.4 Scope of delivery 18
4 Transportation and Storage 19
4.1 Transport 19
4.2 Bearing 20
5 Installation 21
5.1 Setting up the vacuum pump 21
5.2 Connecting the vacuum side 21
5.3 Connecting exhaust side 22
5.4 Connecting cooling water supply 23
5.5 Connecting sealing gas 24
5.6 Filling lubricant 25
5.6.1 Filling lubricant on the motor side 25
5.6.2 Fillin lubricant on the vacuum side 26
5.7 Establishing mains connection 26
5.8 Connecting the operating temperature monitoring 28
6 Operation 30
6.1 Commissioning the vacuum pump 30
6.2 Switch on the vacuum pump 30
6.3 Switching off the vacuum pump 31
7 Maintenance 32
Table of contents
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7.1 Maintenance information 32
7.2 Checklist for inspection and maintenance 33
7.3 Checking the lubricant level 34
7.4 Changing lubricant 35
7.4.1 Draining lubricant on the motor side 36
7.4.2 Draining lubricant on the vacuum side 37
7.4.3 Filling lubricant on the motor side 37
7.4.4 Fillin lubricant on the vacuum side 38
7.5 Cleaning the intake strainer 38
7.6 Cleaning the gas ballast filter 39
8 Decommissioning 41
8.1 Decommissioning the vacuum pump 41
8.2 Recommissioning 41
9 Recycling and disposal 43
9.1 General disposal information 43
9.2 Disposing of the screw pump 43
10 Malfunctions 44
11 Service solutions by Pfeiffer Vacuum 46
12 Accessories 48
12.1 Accessory information 48
12.2 Order accessories 48
12.3 Consumables 48
13 Technical data and dimensions 49
13.1 General 49
13.2 Technical data 49
13.3 Substances in contact with the media 50
13.4 Dimensions 50
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 14
Tbl. 4: Characteristics of the screw pumps 18
Tbl. 5: Requirements on the cooling water composition 23
Tbl. 6: Prerequisites for the cooling water 24
Tbl. 7: Requirements for the sealing gas supply 24
Tbl. 8: Technical data 29
Tbl. 9: Maintenance intervals 34
Tbl. 10: Troubleshooting 45
Tbl. 11: Accessories 48
Tbl. 12: Consumables 48
Tbl. 13: Conversion table: Pressure units 49
Tbl. 14: Conversion table: Units for gas throughput 49
Tbl. 15: Technical data for Hepta 950 L 50
Tbl. 16: Materials that make contact with the process media 50
List of tables
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List of figures
Fig. 1: Position of the stickers on the screw pump 9
Fig. 2: Operating principle 17
Fig. 3: Arrangement of screw pump 17
Fig. 4: Transporting the vacuum pump 20
Fig. 5: Connecting exhaust side 22
Fig. 6: Cooling water connection 23
Fig. 7: Sealing gas connection 24
Fig. 8: Filling lubricant on the motor side 25
Fig. 9: Filling lubricant on the vacuum side 26
Fig. 10: Connecting power supply to the frequency converter 28
Fig. 11: Connecting temperature switch 29
Fig. 12: Checking the lubricant level 35
Fig. 13: Draining lubricant on the motor side 36
Fig. 14: Draining lubricant on the vacuum side 37
Fig. 15: Filling lubricant on the motor side 37
Fig. 16: Filling lubricant on the vacuum side 38
Fig. 17: Disassembling and cleaning the intake strainer 39
Fig. 18: Cleaning the gas ballast filter 40
Fig. 19: Dimensions Hepta 950 L | 72 Hz 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
Supplementary information for screw pump with INVEOR M fre-
quency converter
PU 0093 BN
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 are applicable for HeptaDry vacuum pumps.
Pump type Pump version
Hepta 950 L Dry-compressing screw pump, nominal pumping speed up to 950 m3/h
Frequency converter Size Motor rating
INVEOR M D 22 kW
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.
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
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 meanings.
Made in Germany
Year
Vacuum Pump
S/N = PPPPYYWWNNNN
p = ≤ 0.05 hPa (mbar)
abs V = 950 m³/h
max
-1
n = 4320 min
max m = 1000 kg
Oil quantity = 2 LOil = Pfeiffer D1
D-35614 Asslar
V
p
n
Oil
D-35
Hepta 950 L
2019
PU V72 0007 001
Rating plate (example)
Rating plate for the screw pump
Mod.: xxx
Mod.-Nr.: PT 35S 235
Mass: 55 kg
n: xxxx 1/min
Motor rating plate
Rating plate of the motor
Warning hot surface
This sticker warns of injuries caused by high tempera-
tures as a result of contact without protection during op-
eration.
Operating instructions note
This sticker indicates that this operating instructions
must be read before performing any tasks.
Achtung!
nur mit D1 befüllen
Attention!
only D1 to be used
Sticker (blue) – special lubricant only
Caution: fill with D1 only
Arrow indicating direction of rotation
The direction of rotation arrow indicates the required
motor rotation direction.
Tbl. 1: Stickers on the product
About this manual
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1 2 34
5
6
7
Fig. 1: Position of the stickers on the screw pump
1 Operating instructions note 5 Arrow indicating direction of rotation
2 Sticker with date of lubricant filling 6 Rating plate for the screw pump
3 Hot surface warning sign 7 Hot surface warning sign
4 Rating plate of frequency converter
1.3.4 Abbreviations
Abbreviation Meaning in this document
OI Operating instructions
FCR Fluorocarbon rubber
N.N. Mean sea level
PE Protective earth (earthed conductor)
WAF Width across flats
SLM Standard liter per minute
TTemperature switch
VCI Volatile Corrosion Inhibitor
Tbl. 2: Abbreviations used in this document
1.4 Trademark proof
●INVEOR® M is a registered trademark of KOSTAL Industrie Elektrik GmbH.
About this manual
9/52

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 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.
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.
DANGER
Danger to life from electric shock in case of contact with the frequency converter
High voltages are present at the terminals and inside the frequency converter after disconnecting the
power supply. There is a risk of electric shock if touched.
►Before working on the frequency converter, disconnect the mains cable from the mains power
supply.
►Wait at least 10 minutes after switching off the frequency converter before you start work.
►Provide adequate grounding for the device.
►Prior to installation, check that the connection leads and terminals are voltage-free.
►After connection work, carry out an earthed conductor check.
DANGER
Danger to life from electric shock
Risk of electric shock when working on the frequency converter and motor. There is a risk to life!
►Make sure that electrical installations are only carried out by trained electricians who are familiar
with the relevant safety instructions for electrical safety and EMC.
WARNING
Danger of injury due to exposed rotating parts
Danger of crushing fingers and hands when the vacuum connection is open.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Never insert hands or fingers into the vacuum connection.
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.
►Open shut-off units immediately before or at the same time as starting the pump.
►Take care that atmospheric pressure is always present on the exhaust side. Overpressure or un-
derpressure are not permissible.
►Check the function of the exhaust line on a regular basis.
CAUTION
Risk of unintentional start-up
Depending on the configured parameter settings, the motor may start up in an uncontrolled manner
when the power supply is switched on. There is a risk of injury to fingers and hands (e.g. hematoma),
in case of direct contact with the vacuum flange.
►Make sure that the motor starting up does not cause a hazardous situation.
►Maintain sufficient distance to the vacuum flange during all work.
Safety
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Risks during operation
CAUTION
Health hazard from increased noise emission
Remaining in the close proximity of the vacuum pump for a sustained period of time may cause hear-
ing damage.
►Ensure adequate sound insulation.
►Wear hearing protection.
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
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.
DANGER
Danger to life from electric shock in case of contact with the frequency converter
High voltages are present at the terminals and inside the frequency converter after disconnecting the
power supply. There is a risk of electric shock if touched.
►Before working on the frequency converter, disconnect the mains cable from the mains power
supply.
►Wait at least 10 minutes after switching off the frequency converter before you start work.
►Provide adequate grounding for the device.
►Prior to installation, check that the connection leads and terminals are voltage-free.
►After connection work, carry out an earthed conductor check.
DANGER
Danger to life from electric shock
Risk of electric shock when working on the frequency converter and motor. There is a risk to life!
►Make sure that electrical installations are only carried out by trained electricians who are familiar
with the relevant safety instructions for electrical safety and EMC.
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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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 environmental damage from toxic contaminated lubricant
Toxic process media can cause lubricant contamination. When changing the lubricant, there is a
health hazard due to contact with poisonous substances. Illegal disposal of toxic substances causes
environmental damage.
►Wear suitable personal protective equipment when handling these media.
►Dispose of the lubricant according to locally applicable regulations.
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.
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
Scalding from hot lubricant
Danger of scalding when draining lubricant if it comes into contact with the skin.
►Wear protective equipment.
►Use a suitable collection receptacle.
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 Hepta 950 L
Installation location ● Indoors, protected from dust deposits
● Outdoors, protected from direct weather influences
Installation altitude max. 1000 m above sea level
Orientation Horizontal
permissible angle of inclination ± 1°
Pumped medium intake temperature, max. ≤ 50 hPa: +200 °C
> 50 hPa: +70 °C
Ambient temperature +5 ℃ to +40 ℃
Relative humidity of air max. 90 % at 30 °C
Exhaust pressure Atmospheric pressure
Tbl. 3: Limits of use of the product
2.5 Proper use
►Use the vacuum pump for vacuum generation only.
►To protect the lubricant and the bearing, use sealing gas if high boiling, corrosive or particle-laden
media (e.g. solvents) are pumped.
►Operate the vacuum pump within the application limits of the product and in compliance with the
technical data.
►Adhere to the installation, commissioning, operating, and maintenance instructions.
►Use only accessory parts 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. 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
●Pumping of explosive media
●Pumping radioactive media
●Pumping media that introduce an ignition source to the suction chamber
●Pumping of gases that contain impurities such as particles and dust
●Pumping fluids that do not serve cleaning
●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
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:
Safety
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●Maintenance level 1
─Customer with technical education
─Pfeiffer Vacuum service technician
●Maintenance level 3
─Pfeiffer Vacuum service technician
Safety
16/52

3 Product description
3.1 Function
The HeptaDry screw pumps function according to the double screw-pump principle. Two screw rotors
rotate in the compression chamber. The medium to be pumped is trapped between the individual screw
coils, compacted and transported to the gas outlet. During the compaction process, the two screw rotors
do not come into contact with each other, nor with the suction chamber.
Fig. 2: Operating principle
Operation of this screw pump is instigated with each occurrence of intake pressure between atmos-
phere and final pressure. Despite contactless operation of the screw pump, no operating fluid, such as
oil or water, is necessary within the working chamber. A gas ballast valve, sealing gas device and/or
silencer can be installed at the gas exhaust, depending on the respective application.
1
23
45
7
8
9
10
6
12
13
14
15
16
17
18
19
20
11
Fig. 3: Arrangement of screw pump
1 Frequency converter 11 Cooling water outlet
2 Eye bolt (2x) 12 Filler screw
3 Thermal circuit breaker 13 Magnetic sealing plug
4 Vacuum connection 14 Sealing gas connection
5 Filler screw 15 Drain screw
6 Locking screw for screw rotors 16 Cooling water drain screw
7 Magnetic sealing plug 17 Drain screw
8 Exhaust connection 18 Condensate drain
9 Sight glass (2x) 19 Silencer
10 Cooling water inlet 20 Rubber-metal bumper (4x)
3.1.1 Water cooling
Connection to an external cooling water supply dissipates heat which is generated during compression
of the gas. The cooling water flows through the cooling chambers of the screw pump and absorbs the
heat there.
3.1.2 Temperature monitoring
The switching temperatures are dependent upon the pump size and the type of cooling system. Tem-
perature monitoring prevents overheating and potential blockages in the screw pump.
Product description
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3.1.3 Frequency converter
The frequency converter (INVEOR M drive controller) controls the speed of three-phase motors on
screw pumps. The frequency converter is fastened to the motor by means of an adapter plate, and
wired to the terminal box.
3.1.4 Gas ballast
An integrated gas ballast system serves the controlled supply of ambient air or inert gas into the suction
chamber. Gas ballast supports the reduction of condensate accumulating in the pumping system.
3.1.5 Sealing gas system
Sealing gas is used to protect the screw pump in dusty processes, or wherever excessive gas through-
puts are prevalent. Sealing gas prevents the ingress of damaging substances into the motor and bear-
ing area. The supply is carried out either via a sealing gas valve or a sealing gas throttle without control.
3.1.6 Silencer
The silencer reduces the noise level during operation without exhaust line.
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
Hepta 950 L ●Nominal pumping speed at 72 Hz: 950 m3/h
● Frequency converter
● Water cooling
● Thermal circuit breaker
Tbl. 4: Characteristics of the screw pumps
3.4 Scope of delivery
●Screw pump with frequency converter
●Lubricant
●Locking caps for vacuum and exhaust connection
●Protective strainer
●Eye bolt (2x)
●Operating instructions
Product description
18/52

4 Transportation and Storage
4.1 Transport
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
Property damage as a result of lubricant leaking into the pumping system.
Tilting of the screw pump will cause lubricant to overflow into the pumping system.
►Always transport the screw pump horizontally.
►Always transport the screw pump without lubricant.
►Only fill up lubricant 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.
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.
Required aids
●2 eye bolts
●Carrying strap (≥ 400 mm)
Transportation and Storage
19/52

12
Fig. 4: Transporting the vacuum pump
1 Eye bolt (2x) 2 Carrying strap (2x)
Procedure
1. Tighten all eye bolts hand-tight.
2. Attach one carry strap per eye bolt.
–Make sure that the two carry straps are the same length.
Transporting the vacuum pump without its packaging
1. Unpack the vacuum pump.
2. To protect the inside of the pump, leave the protective caps on the connections during transport.
3. For lifting, use the eye bolts intended for this purpose on the top of the pump.
4. Lift the vacuum pump out of the transport packaging.
5. Always place the vacuum pump on an adequately sized, level surface.
4.2 Bearing
NOTICE
Damage to frequency converter due to long storage time
A long storage time can lead to the frequency converter's capacitors losing their efficiency. Electro-
chemical processes can cause a short circuit and thus cause damage to the frequency converter.
►Connect the screw pump to the mains power supply every 18 months for 60 minutes.
Storage
Pfeiffer Vacuum recommends storing the products in their original transport packaging.
Store the vacuum pump
1. Seal the vacuum and exhaust connection.
2. Make sure that the gas ballast valve is closed.
3. Store the vacuum pump only in dry, dust-free rooms, within the specified ambient conditions.
4. In rooms with humid or aggressive atmospheres: Hermetically seal the vacuum pump together
with a drying agent in a plastic bag.
5. Replace the lubricant if storage is to exceed a period of more than 2 years.
Store the vacuum pump for longer periods
Preserve the vacuum pump if the vacuum pump is exposed to unfavorable ambient conditions (e.g. ag-
gressive environment, extreme fluctuations in temperature) or if the equipment is to be in storage for a
period of more than 3 months.
1. Drain the lubricant and cooling water.
2. Close all openings so that they are airtight.
3. Secure any loose parts (e.g. sealing rings, flat seals) with adhesive tape.
4. Wrap the vacuum pump in VCI film.
5. Only store the vacuum pump in dry, dust-free and rooms which are not exposed to vibrations.
6. Where possible, store the vacuum pump in its original transport packaging.
Transportation and Storage
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