Pfeiffer Vacuum OKTA 8000 G ATEX User manual

OPERATING INSTRUCTIONS
EN
Original
OKTA 8000 G
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.
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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 Product variants affected 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 instructions 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
3 Product description 16
3.1 Function 16
3.2 Product identification 17
3.3 Product features 18
3.4 Shipment 18
4 Transportation and Storage 19
4.1 Transporting the vacuum pump 19
4.2 Storing the vacuum pump 20
5 Installation 21
5.1 Installing the vacuum pump 21
5.2 Filling with lubricant 21
5.3 Filling with sealing oil 22
5.4 Fill the sealing medium for the axial face seal 23
5.5 Connecting the vacuum side 24
5.6 Connecting the fore-vacuum side 25
5.7 Connecting the gas cooler 25
5.8 Connecting the cooling water supply 26
5.9 Establishing mains connection 28
5.9.1 Connecting a three phase motor with 6-pin terminal board 29
5.9.2 Checking the direction of rotation 30
5.9.3 Connecting the PTC thermistor temperature sensor (3TF) 30
5.10 Connecting accessories 31
5.10.1Connecting sealing gas 32
5.10.2Installing temperature monitoring 32
5.10.3Installing a protective strainer 33
6 Operation 34
6.1 Putting the vacuum pump into operation 34
6.2 Switching on the vacuum pump 34
6.3 Adjusting the sealing gas amount 35
6.4 Flushing the suction chamber 36
6.5 Switching off and venting 36
6.6 Re-start (to) 37
7 Maintenance 38
7.1 Maintenance information 38
Table of contents
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7.2 Checklist for inspection and maintenance 38
7.3 Changing the lubricant 40
7.4 Changing the sealing oil 41
7.5 Checking and changing the sealing medium of the axial face seal 42
7.6 Cleaning the suction chamber 43
7.7 Installing the coupling 43
8 Decommissioning 45
8.1 Shutting down for longer periods 45
8.2 Recommissioning 45
8.3 Disposing of the vacuum pump 45
9 Malfunctions 47
10 Service solutions from Pfeiffer Vacuum 49
11 Spare parts 51
11.1 Set of seals for version with RSSR 51
11.2 Set of seals for version with axial face seal (axial face seal separate) 51
11.3 Axial face seal, complete 51
11.4 Maintenance kit for version with RSSR 51
11.5 Overhaul kit for versions with RSSR 51
11.6 Overhaul kit for versions with axial face seal 51
11.7 Set of gear wheels 51
12 Technical data and dimensions 52
12.1 General 52
12.2 Technical data 52
12.3 Dimensions 53
Declaration of conformity 55
Table of contents
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List of tables
Tbl. 1: Stickers on the product...............................................................................................8
Tbl. 2: Abbreviations used.....................................................................................................9
Tbl. 3: Permissible ambient conditions................................................................................14
Tbl. 4: Features of the roots pumps.....................................................................................18
Tbl. 5: Requirements on the cooling water composition......................................................27
Tbl. 6: Max. permissible flushing quantity............................................................................36
Tbl. 7: Maintenance intervals...............................................................................................39
Tbl. 8: Troubleshooting........................................................................................................48
Tbl. 9: Conversion table: Pressure units..............................................................................52
Tbl. 10: Conversion table: Units for gas throughput.............................................................. 52
Tbl. 11: Technical data for Okta 8000 G................................................................................53
List of tables
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List of figures
Fig. 1: Position of the labels on the product.......................................................................... 9
Fig. 2: Design, Okta 8000 G................................................................................................16
Fig. 3: Functional diagram Okta G.......................................................................................17
Fig. 4: Transporting the vacuum pump................................................................................19
Fig. 5: Filling with lubricant.................................................................................................. 22
Fig. 6: Filling sealing oil for radial shaft seal rings...............................................................23
Fig. 7: Sealing agent container for axial face seal...............................................................24
Fig. 8: Roots pump with tubular gas cooler......................................................................... 26
Fig. 9: Cooling water connection at the gas cooler..............................................................27
Fig. 10: Delta connection for low voltage...............................................................................29
Fig. 11: Star circuit for high voltage.......................................................................................29
Fig. 12: Check of direction of rotation....................................................................................30
Fig. 13: Connection example with PTC thermistor tripping unit.............................................31
Fig. 14: Sealing gas connection............................................................................................ 32
Fig. 15: Temperature monitoring........................................................................................... 33
Fig. 16: Changing the lubricant..............................................................................................40
Fig. 17: Replacing the sealing oil for radial shaft seal rings.................................................. 42
Fig. 18: Elastic bolt coupling (example).................................................................................44
Fig. 19: Okta 8000 G............................................................................................................. 54
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
These operating instructions are for customers of Pfeiffer Vacuum. They describe the function of the
designated product and provide the most important information for safe usage of the product. The de-
scriptions comply with applicable directives. All information provided in these operating instructions refer
to the current development status of the product. The documentation remains valid as long as the cus-
tomer does not modify the product in any way.
1.1.1 Applicable documents
Designation Document
Declaration of conformity A component of these instructions
1.1.2 Product variants affected
These instructions apply for roots pumps of the following versions:
Pump type Pump designs
Standard version Standard version:
●Standard motor
●Housing and all parts forming the suction chamber are made of GGG
●Connection flanges are designed as ISO, DIN or ANSI flanges
●Connections for sealing gas inlet
●Shaft sealed with radial shaft seal ring (RSSR)
●Version with magnetic coupling (M series only)
Special versions Changes to the standard design:
●Shaft sealed with an axial face seal
●Version with gas cooler
●Special seal materials which are resistant to aggressive media
●Special housing and piston materials (e.g. stainless steel)
●Pressure test carried out on the pump housing
1.2 Target group
This operating instructions are aimed at all persons performing the following activities on the product:
●transport,
●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
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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 meaning.
Mod.: Okta 8000 G
Weight: 1500 kg
3
D-35641 Asslar
Made in Germany
Mod.-No.: PP G80 xxx
n: max. 2200 1/min Oil: P3 21,0 l
S(N): max. 12000 m /h
09/2018
Ser. -No.: 12xxxxxxxxx
Rating plate (example)
The rating plate is located on the front side above the sight
glass
Warning hot surface
This sticker warns of injuries caused by high temperatures in
case of touching without protection during operation.
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
Tbl. 1: Stickers on the product
About this manual
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12
34
5
Fig. 1: Position of the labels on the product
1 Hot surface warning sign 4 Fill lubricant note
2 Rating plate 5 Direction of rotation arrow (cast in pump housing)
3 D1 lubricant note
1.3.4 Abbreviations
Abbreviation Explanation
Okta "G" Gas circulation cooled roots pump
WAF width across flats
EClearance between both coupling halves
RSSR Radial shaft seal ring
AFS Axial face seal
GGG Spheroidal graphite cast iron
FPM Fluoropolymer rubber
PE Earthed conductor (protective earth)
PN Nominal pressure stage (pressure nominal)
ANSI American National Standards Institute
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)
OI Operating instructions
SI Service instructions
Tbl. 2: Abbreviations used
About this manual
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2 Safety
2.1 General safety instructions
This document includes the following four risk levels and one information level.
DANGER
Imminent danger
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
►Instructions on avoiding the hazardous situation
WARNING
Possibly imminent danger
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
►Instructions on avoiding the hazardous situation
CAUTION
Possibly imminent danger
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
►Instructions on avoiding the hazardous situation
NOTICE
Danger of property damage
Notice is used to address practices not related to physical injury.
►Instructions on avoiding property damage
Notes, tips or examples indicate important information on the product or on this
document.
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
Contact with exposed and live elements generate an electric shock. Incorrect connection of the mains
supply leads to the risk of live housing parts that can be touched. 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.
WARNING
Risk of scalding from suddenly escaping hot cooling water
The cooling water connections are open to both sides. When connecting the cooling water supply,
there is a risk of scalding from the sudden escape of overpressurized hot water.
►Prior to installation, ensure that pressure is discharged from the cooling water system, and that it
is cooled down.
►Wear protective equipment, e.g., safety goggles and gloves.
CAUTION
Risk of injury from bursting due to high pressure in the exhaust line
Faulty or insufficient exhaust lines cause hazardous situations, e.g. increase in exhaust pressure.
There is a risk of bursting. It is not possible to rule out the risk of injuries due to broken pieces flying
around, high escaping pressure and damage to the equipment.
►Lay the exhaust line without shut-off units.
►Observe the permissible pressures and pressure differentials of the product.
►Check the exhaust line regularly for correct function.
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.
Safety
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Risks during operation
WARNING
Danger of poisoning due to emission of toxic process gases from the exhaust
During operation with no exhaust line, the vacuum pump allows exhaust gases and vapors to escape
freely into the air. In processes involving toxic media, there is a risk of injury and danger to life due to
poisoning.
►Observe the relevant regulations for handling toxic substances.
►Safely purge toxic process gases via an exhaust line.
►Use suitable filter equipment to separate toxic substances.
WARNING
Risk of injury from reactive, explosive or other hazardous gas/air mixtures
Uncontrolled gas inlet of air or gases containing oxygen promotes formation of unexpected explosive
gas/air mixtures in the vacuum system. This results in severe injuries.
►Use only inert gases for supplying the sealing gas supply in order to avoid a potential ignition.
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
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
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.
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 personal 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 dan-
gers 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 docu-
ment.
Infringement of conformity due to modifications to the product
The Declaration of Conformity from the manufacturer is no longer valid if the opera-
tor changes the original product or installs additional equipment.
●Following installation into a system, the operator is required to check and re-
evaluate as necessary the conformity of the overall system in the context of the
relevant european Directives 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 appropriate noise protection measures in case the sound pressure level requires this.
Safety
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►Before working on the vacuum connection, wait until the rotor is at a complete standstill (rotation
speed f = 0).
►Do not carry out your own conversions or modifications on the vacuum pump.
►Before returning the vacuum pump, observe the notes in the chapter Service.
2.4 Product usage limits
Parameter Okta G
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. 2,000 m above sea level,
at installation altitudes > 1,000m above m.s.l. and an ambient tempera-
ture of 40 °C the rated power of the motor reduces by around 10 %
Ambient temperature +5 °C to +40 °C
Relative air humidity max. 85 % (depending on the motor version)
Gas temperature, pressure
side, max.
+140 °C
Intake pressure, max. < 1,100 hPa (abs.)
Orientation Horizontal
Tbl. 3: Permissible ambient conditions
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.
►Depending on the process and if necessary, use sealing gas.
–Evacuating high-boiling media (e.g. solvents) degrades the lubricant.
►Operate the vacuum pump within application limits (see: Product usage limits and 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 that can corrode or not be withstood by vacuum pump materials.
Components contained in the suction chamber are cast iron, steel, and stainless steel. Seals are
FKM (alternative seals available on request).
●Pumping explosive media
●Pumping radioactive media
●Pumping media prone to exothermic reactions
●Pumping media that introduce an ignition source to the suction chamber
Safety
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●Pumping media that can cause adhesive deposits to form in the suction chamber, or the pistons to
start up 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
●Using pipes to lift the vacuum pump
●Use of accessories or spare parts that are not listed in these instructions
●Using the vacuum pump as a climbing aid.
Safety
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3 Product description
3.1 Function
The gas circulation cooled roots pumps of the OktaLine "G" series work according to the Roots princi-
ple, and are operated without backing pump. 2 rolling pistons, which are coupled by a pair of gears,
counter-rotate and roll in the housing in opposite directions without making contact. When used as a
single pump, they can reach a pressure range of 130 to 1013 Pa. A series connection of two vacuum
pumps reduces the ultimate pressure to 20 to 30 hPa. When combined with other Roots pumps, the
final pressure can be lowered down to the medium vacuum range. The direction of flow of the vacuum
pumps is vertical from top to bottom, so that any accumulating fluids cannot become deposited in the
pump housing.
2 3
14
67891011
1213
5
Fig. 2: Design, Okta 8000 G
1 Lubricant filling plug 8 Sealing gas connection (2×)
2 Vacuum flange 9 Fore-vacuum flange
3 Eye bolts 10 Measurement connection, fore-vacuum flange
4 Lubricant filling plug 11 Cooling gas connection
5 Oiler for version with RSSR 12 Sealing gas connection (2×)
6 Sight glass 13 Lubricant drain plug
7 Lubricant drain plug
Product description
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2
1
8
7
4
356
Fig. 3: Functional diagram Okta G
1 Cooling gas connection I 5 Suction chamber
2 Slave rotor 6 Cooling gas connection II
3 Vacuum connection 7 Fore-vacuum connection (fore-vacuum flange)
4 Main rotor 8 Gas cooler
Cooling (optional)
Forced gas recirculation dissipates the heat of the gas, after it has undergone the compression and dis-
charge phases, via a gas cooler on the fore-vacuum connection. As a result, work conditions are ach-
ieved that are not possible with normal roots pumps.
A thermostat switches off the vacuum pump once the pump temperature has exceeded the limit value
(e.g. due to cooling water failure).
Shaft sealed with radial shaft seal ring (RSSR)
The drive shaft feedthrough is fitted with radial shaft seal rings or axial face seals.
The shaft seal with radial shaft seal ring made of FPM is used on standard roots pump versions. Alter-
natively, depending on the process medium, the inner radial shaft seal ring is also be made of PTFE. In
this case the housing seals are also equipped with PTFE covered O-rings.
Shaft sealed with an axial face seal
An improvement in terms of sealing - when pumping aggressive media - can be achieved with the aid of
axial face seals. Axial face seals belong to the seals for fluids and therefore require a supply of a seal-
ing agent and a coolant which are neutral in terms of the medium to be pumped. They offer a sealing
pressure of up to 10000 hPa.
3.2 Product identification
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 plate:
●Pump model
●Model number
●Type and quantity of the lubricant
●Max. allowable pump rotation speed
●Date of manufacture
●Input voltage range
Product description
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3.3 Product features
Flange types Vacuum connection/
Fore-vacuum con-
nection
Cooling gas con-
nection
Measurement
connections
Barrier gas
connections
ANSI (150 lbs) 12" 6" 1 × G 3/8"
1 × G 1/2"
4 × G 3/8"
DIN DN 300 PN 10 DN 150 PN 10
DIN ISO NW 320 ISO-F NW 160 ISO-F
Tbl. 4: Features of the roots pumps
3.4 Shipment
●Okta G without motor
●Connection flange
●Seal for the connection flange
●Protective cover for the connection flange
●Screw kit for the connection flange
●2 eye bolts
●Lubricant P3 (for standard pump)
●Operating instructions
Product description
18/56

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
position is reached.
Pfeiffer Vacuum recommends keeping the transport packaging and original protec-
tive cover.
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.
Instructions for transport when packaged
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.
Fig. 4: Transporting the vacuum pump
Transportation and Storage
19/56

Instructions for transport unpackaged
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. If a motor is installed, use an additional strap at a suitable location.
5. Lift the vacuum pump out of the transport packaging vertically.
6. If necessary, remove the eye bolts after transport and installation.
–Keep the eye bolts for future use.
4.2 Storing the vacuum pump
The roots pumps do not have any corrosion protection on the inside. If you intend to store the roots
pump for longer periods, we recommend that you use a special corrosion protection agreed with us.
Procedure
1. Close both connection flanges.
2. Check that the other openings are sealed safely, e.g. sealing gas and measurement connections.
3. Store the roots pump only in dry, dust-free rooms, within the specified ambient conditions:
–In rooms with humid or aggressive atmospheres, seal the roots pump airtight in a plastic bag,
together with a drying agent.
–After a storage period of 2 years, Pfeiffer Vacuum recommends changing the lubricant.
The best corrosion protection for the roots pump is achieved by evacuating and then filling the suction
chamber with nitrogen.
Transportation and Storage
20/56