Pfeiffer Vacuum OKTA 250 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
OKTA 250 | 250 M | 500 | 500 M
Roots pump

Dear Customer,
Thank you for choosing a Pfeiffer Vacuum product. Your new roots pump should support you
in your individual application with full performance and without malfunctions. The name
Pfeiffer Vacuum stands for high-quality vacuum technology, a comprehensive and complete
range of top-quality products and first-class service. From this extensive, practical experience
we have gained a large volume of information that can contribute to efficient deployment and
to your personal safety.
In the knowledge that our product must avoid consuming work output, we trust that our
product can offer you a solution that supports you in the effective and trouble-free
implementation 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.
2/54

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 8
1.3.1 Instructions in the text 8
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 13
2.4 Product usage limits 14
2.5 Proper use 14
2.6 Foreseeable improper use 14
2.7 Personnel qualification 15
2.7.1 Ensuring personnel qualification 15
2.7.2 Personnel qualification for maintenance and repair 15
2.7.3 Advanced training with Pfeiffer Vacuum 16
3 Product description 17
3.1 Functional description 17
3.2 Identifying product 17
3.3 Product features 18
3.4 Scope of delivery 18
4 Transportation and Storage 19
4.1 Transporting the vacuum pump 19
4.2 Storing vacuum pump 20
5 Installation 21
5.1 Setting up vacuum pump 21
5.2 Filling up lubricant 21
5.3 Filling with sealing oil 22
5.4 Connecting vacuum side 23
5.5 Connecting the fore-vacuum side 24
5.6 Connect to mains power supply 24
5.6.1 Connecting three phase motor with 6-pin terminal board 25
5.6.2 Checking the direction of rotation 26
5.6.3 Connecting the PTC thermistor tripping unit 26
6 Operation 28
6.1 Putting the vacuum pump into operation 28
6.2 Switching on the vacuum pump 28
6.3 Check the lubricant level 29
6.4 Adjusting sealing gas amount 29
6.5 Flushing suction chamber 30
6.6 Switching off and venting 30
6.7 Restarting 31
7 Maintenance 32
7.1 Maintenance information 32
7.2 Checklist for inspection and maintenance 32
7.3 Changing lubricant 34
Table of contents
3/54

7.3.1 Draining lubricant 34
7.3.2 Filling up lubricant 35
7.4 Changing sealing oil 35
7.5 Cleaning the suction chamber 36
7.6 Cleaning the overflow valve 37
7.7 Installing coupling 38
7.8 Installing the coupling for versions with magnetic coupling 39
8 Decommissioning 40
8.1 Shutting down for longer periods 40
8.2 Recommissioning 40
9 Recycling and disposal 41
9.1 General disposal information 41
9.2 Dispose of Okta roots pumps 41
10 Malfunctions 42
11 Service solutions by Pfeiffer Vacuum 44
12 Spare parts 46
12.1 Set of seals for version with RSSR 46
12.2 Set of seals for version with magnetic coupling 46
12.3 Maintenance kit for version with RSSR 46
12.4 Maintenance kit for version with magnetic coupling 46
13 Accessories 47
13.1 Accessory information 47
13.2 Ordering accessories 47
14 Technical data and dimensions 49
14.1 General 49
14.2 Technical data 49
14.3 Dimensions 51
Declaration of conformity 53
Table of contents
4/54

List of tables
Tbl. 1: Stickers on the product 9
Tbl. 2: Abbreviations used 9
Tbl. 3: Usage limits of the vacuum pump 14
Tbl. 4: Features of the roots pumps 18
Tbl. 5: Maintenance intervals 33
Tbl. 6: Troubleshooting 43
Tbl. 7: Okta 250 accessories 47
Tbl. 8: Okta 500 accessories 48
Tbl. 9: Conversion table: Pressure units 49
Tbl. 10: Conversion table: Units for gas throughput 49
Tbl. 11: Technical data Okta 250 Standard | M 50
Tbl. 12: Technical data Okta 500 Standard | M 51
Tbl. 13: Dimensions Okta 250 Standard | M 51
Tbl. 14: Dimensions Okta 500 Standard | M 52
List of tables
5/54

List of figures
Fig. 1: Position of the stickers on the product 9
Fig. 2: Design of standard version and M version 17
Fig. 3: Transporting the vacuum pump 20
Fig. 4: Filling up lubricant 22
Fig. 5: Filling sealing oil for radial shaft seal rings 23
Fig. 6: Delta connection for low voltage 25
Fig. 7: Star circuit for high voltage 25
Fig. 8: Check of direction of rotation 26
Fig. 9: Connection example with PTC thermistor tripping unit 27
Fig. 10: Draining lubricant 34
Fig. 11: Replacing sealing oil for radial shaft seal rings 36
Fig. 12: Overflow valve 37
Fig. 13: Installation instructions gear rim coupling 38
Fig. 14: Dimension diagram Okta 250 Standard | M 51
Fig. 15: Dimension diagram Okta 500 Standard | M 52
List of figures
6/54

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
Additional information for "M Version" PW 0142
Supplementary Information for Roots pumps with special overflow
valves PW 0022
Spray lance operating instructions PW 0332
Declaration of conformity A component of these in-
structions
You can find these documents in the Pfeiffer Vacuum Download Center.
1.1.2 Variants
These instructions apply for roots pumps of the following versions:
Pump type Pump designs
Standard ver-
sion Standard version:
● Standard motor
● The housing and all parts forming the suction chamber consist of GG and GGG
● Connection flanges are designed as ISO flanges
● Overflow valve for protection against thermal overload
M version Changes to the standard design:
● Version with magnetic coupling
Special ver-
sions ● Blocked overflow valve or changed differential pressure at the overflow valve ● Special sealing materials resistant to aggressive media
● Special coatings for corrosion protection or anti-stick properties
● Version with PN flanges
● Special, process-specific lubricants
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.
About this manual
7/54

1.3 Conventions
1.3.1 Instructions in the text
Usage instructions in the document follow a general structure that is complete in itself. The required ac-
tion is indicated by an individual step or multi-part action steps.
Individual action step
A horizontal, solid triangle indicates the only step in an action.
►This is an individual action step.
Sequence of multi-part action steps
The numerical list indicates an action with multiple necessary steps.
1. Step 1
2. Step 2
3. ...
1.3.2 Pictographs
Pictographs used in the document indicate useful information.
Note
Tip
1.3.3 Stickers on the product
This section describes all the stickers on the product along with their meanings.
Mod.: Okta 500
Weight: 140 kg
3
D-35641 Asslar
Made in Germany
Mod.-No.: PP W31 ...
n: max. 4500 1/min Oil: P3 1,5 l
S(N): max. 840 m /h
09/2020
Ser. -No.: 183..............
Rating plate (example)
The rating plate is located on the front side above the sight
glass
Motor rating plate (not shown)
Vor Inbetriebnahme Pumpe mit Öl
füllen
Fill the pump with oil before putting
into operation
Remplir la pompe d’huile avant la mise
en route
Sticker (red)
Before commissioning, fill the gear and bearing chambers with
lubricant
Achtung!
nur mit D1 befüllen
Attention!
only D1 to be used
Sticker (blue) – special lubricant only
Caution: fill with D1 only
Achtung!
nur mit F5 befüllen
Attention!
only F5 to be used
Sticker (orange) – only in case of special lubricants
Caution: fill with F5 only
About this manual
8/54

Warning hot surface
This sticker warns of injuries caused by high temperatures as a
result of contact without protection during operation.
Warning of magnetic field
This sticker warns of injuries to people with pacemakers.
Tbl. 1: Stickers on the product
12
3
4
5
6
Fig. 1: Position of the stickers on the product
1 Rating plate 4 Filling up lubricant note
2 Magnetic field warning sign for M version 5 Note D1/F5 lubricant
3 Direction of rotation arrow (cast in the cover) 6 Hot surface warning sign
1.3.4 Abbreviations
Abbreviation Explanation
PTC Temperature-dependent resistor (Positive Temperature Coefficient)
M version Roots pumps with magnetic coupling
RSSR Radial shaft seal ring
WAF width across flats
EClearance between both coupling halves
GGG Spheroidal graphite cast iron
GG Cast iron with lamellar graphite
FPM Fluoropolymer rubber
PN Nominal pressure stage (pressure nominal)
ISO International Organization for Standardization
DIN German Institute for Standardization (Deutsches Institut für Normung)
fRotation speed value of a vacuum pump (frequency, in rpm or Hz)
pIntake pressure or general pressure in [hPa]
OI Operating instructions
SI Service instructions
Tbl. 2: Abbreviations used
About this manual
9/54

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
10/54

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
Risk of crushing from rotating parts
Fingers and hands may be caught by rotating pistons within the connection flange. This results in se-
vere injuries.
►Keep limbs out of the reach of the roots pump.
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
Risk of injury from loss of stability
During setup, there is a risk of injury from tipping, if the vacuum pump is not anchored on the stand-
ing surface.
►Secure the vacuum pump using suitable lifting gear.
►Wear personal protective equipment.
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.
Safety
11/54

WARNING
Risk of crushing on rotating parts when reaching into the open flange
The pistons continue to run in the vacuum after switching off the motor, and can trap fingers and
hands within their reach.
►Wait until the vacuum pump comes to a complete standstill.
►Secure the vacuum pump against re-start.
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.
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.
Risks during maintenance, decommissioning and malfunctions
WARNING
Danger of injury from strong magnetic field
There is a risk of injury for people with pacemakers and medical implants.
►Make sure that such individuals do not enter the sphere of influence (≤ 2 m) of the magnetic field.
►Identify rooms in which magnetic couplings are openly accessible with the symbol: "No access
for people with pacemakers".
►Always keep disassembled couplings away from computers, data carriers, and other electronic
components.
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
Risk of crushing from rotating parts
Fingers and hands may be caught by rotating pistons within the connection flange. This results in se-
vere injuries.
►Keep limbs out of the reach of the roots pump.
Safety
12/54

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.
WARNING
Danger of injury due to exposed rotating parts
In the operating range of the motor coupling, there is a danger of clothing being caught and wound
up.
►When assembling the motor and coupling, make sure that the coupling protection is seated cor-
rectly.
►Wear correct clothing.
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.
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
►Do not expose body parts to the vacuum.
►Check all safety measures at regular intervals.
►Observe the safety and accident prevention regulations, if necessary wear personal protective
equipment.
►Always ensure a secure connection to the earthed conductor (PE), protection class I.
►Never operate the vacuum pump with open vacuum flange.
►Provide suitable touch protection, if the surface temperature exceeds 70°C.
►Provide suitable noise protection measures as necessary.
►Before working on the vacuum connection, wait until the rotor is at a complete standstill (rotation
speed f = 0 Hz).
►Never make your own conversions or modifications to the vacuum pump.
►Before returning the vacuum pump, observe the notes in the chapter Service.
Safety
13/54

2.4 Product usage limits
Parameter Okta
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. 2000 m above sea level1)
Ambient temperature +5 °C – +40 °C
Relative humidity of air max. 85 % (depending on the motor version)
Gas temperature, pressure side,
max. +200 ℃
Intake pressure, max. < 1300 hPa (abs.)
Orientation Horizontal
Tbl. 3: Usage limits of the vacuum pump
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 (F5) as lubricant.
►Use sealing gas as appropriate for the process.
►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.
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:
●Transport, installation or operation of the vacuum pump in an impermissible spatial position
●Pumping media which are corrosive to materials of the vacuum pump
●Pumping of explosive media
●Pumping radioactive media
●Pumping media prone to exothermic reactions
●Pumping media that introduce an ignition source to the suction chamber
●Pumping media that form adhesive deposits inside the suction chamber and cause the pistons to
touch or jam
●Pumping fluids - flushing media for cleaning are permissible
●Using the vacuum pump to generate pressure
●Using the vacuum pump in systems in which sporadic loads and vibrations or periodic forces act
on the unit
●Use of the vacuum pump in potentially explosive atmospheres
●Use of the vacuum pump in areas with strong electrical, magnetic or electromagnetic fields
●Use of the vacuum pump with open vacuum and/or fore-vacuum flange open to the atmosphere
●Using lubricants not specified by Pfeiffer Vacuum
●Lifting the vacuum pump without the prescribed eye bolts, for example on piping.
1) at installation altitudes > 1,000m above m.s.l. and an ambient temperature of 40 °C the rated power of the
motor reduces by around 10 %
Safety
14/54

●Use of accessories or spare parts that are not listed in these 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 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.
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
Safety
15/54

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
16/54

3 Product description
3.1 Functional description
The operating principle of the roots pump is based on 2 synchronous pistons that rotate in a housing
without touching. The pumping effects arise as a result of the opposing rotation of the 2 figure-of-eight
shaped rolling pistons. While suction chambers are formed between the rolling pistons and the housing,
the rolling pistons continuously form a mutual seal without touching each other or the housing. This op-
posing yet synchronised movement of the rolling pistons is achieved by means of a pair of gears mount-
ed on the extended shaft ends. Lubrication is limited to the two bearing and gear chambers which are
arranged separately from the suction chambers. Operation with a backing pump connected upstream
enables compressing against atmospheric pressure.
Roots pumps of the M series are equipped with a magnetic coupling.
123
8
12 11 9
10
14 13
16
15
18
17
6
7
45
Fig. 2: Design of standard version and M version
1 Vacuum flange 10 Sight glass, motor side
2 Oiler for version with RSSR 11 Fore-vacuum flange
3 Measurement connection, vacuum side 12 Sealing gas connection, motor side
4 Cardboard cover disk 13 Measurement connection, fore-vacuum side
5 Eye bolt 14 Sealing gas connection, gearbox side
6 Filler screw 15 Drain screw, gearbox side
7 Lantern, M version 16 Sight glass, gearbox side
8 Motor terminal box 17 Filler screw, gearbox side
9 Drain screw, motor side 18 Overflow valve
3.2 Identifying product
To ensure for a clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
The following information is shown on the rating plates:
●Pump model
●Model number
●Type and quantity of the lubricant
●Max. allowable pump rotation speed
●Date of manufacture
●Input voltage range (motor rating plate)
Product description
17/54

3.3 Product features
Flange types Nominal
pumping
speed
[m3/h]
Vacuum con-
nection
Fore-vacuum
connection
Sealing gas
connection
Measure-
ment con-
nection
Okta 250
Okta 250 M
290/350 DN 63 ISO-F DN 63 ISO-F 4 × G 3/8" 2 × G 3/8"
Okta 500
Okta 500 M
560/670 DN 100 ISO-F DN 100 ISO-F 4 × G 3/8" 2 × G 3/8"
Okta 500
Okta 500 M
pressure surge
protected
560/670 DN 100 DIN PN
16 DN 100 DIN PN 16 4 × G 3/8" 2 × G 1/2"
Tbl. 4: Features of the roots pumps
3.4 Scope of delivery
●Roots pump
●Seals for the connection flanges; for ISO flanges, centering rings are included
●Cover disks for the connecting flanges
●Screw kit for the connection flange
●2 eye bolts for lifting the roots pump
●Lubricant P3 (standard version)
●Motor-side coupling half for roots pumps without motor
●Operating instructions
Product description
18/54

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.
Instructions for safe transport
●Only remove the protective cover for the connection flange once the pipes have been
mounted.
●Fill the gear and bearing chambers with lubricant only once the final installation posi-
tion is reached.
Preparations for transport
Pfeiffer Vacuum recommends keeping the transport packaging and original protective cov-
er.
General information regarding safe transport
1. Observe weight specified on the rating plate.
2. Where possible, always transport or ship the roots pump in its original packaging.
3. Remove the protective cover only immediately prior to installation.
Transporting the vacuum pump in its packaging
1. Use a pallet truck to transport the vacuum pump in its packaging.
2. Note the center of gravity of the load.
3. Observe safe handling of manually operated transport devices.
4. Ensure harmonious movements and moderate speeds.
5. Ensure a flat substrate.
6. Wear protective equipment, e.g. safety shoes.
Transportation and Storage
19/54

Fig. 3: Transporting the vacuum pump
Transporting the vacuum pump without its packaging
2 eye bolts are included in the shipment, which are firmly bolted to the vacuum pump ex-factory.
1. Unpack the vacuum pump.
2. Attach suitable lifting tools to both eye bolts.
3. Pay attention to the correct use and fastening of the lifting equipment.
4. Lift the vacuum pump out of the transport packaging vertically.
5. If necessary, remove the eye bolts after transport and installation.
–Keep the eye bolts for future use.
4.2 Storing vacuum pump
Neither the suction chamber nor the pistons in the roots pump in the roots pump interior are provided
with corrosion protection.
Storage
Pfeiffer Vacuum recommends storing the products in their original transport packaging.
Procedure
1. Vacuum-seal both connection flanges.
2. Store the roots pump only in dry, dust-free rooms, within the specified ambient conditions.
3. Evacuate and then fill the suction chamber with nitrogen to achieve the best corrosion protection
for the roots pump.
4. In rooms with humid or aggressive atmospheres, seal the roots pump airtight in a plastic bag, to-
gether with a drying agent.
5. Change the lubricant after a storage period of more than 2 years.
6. If you intend to store the roots pump for longer periods, we recommend that you use a special
corrosion protection agreed with Pfeiffer Vacuum.
Transportation and Storage
20/54