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OPERATING INSTRUCTIONS EN
Translation of the Original
OKTA 18000 ATEX Roots pump
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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 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 ATEX classification and safety measures 14
2.4.1 Labeling of the vacuum pump 15 2.4.2 Potential hazards 16 2.4.3 Safety measures 16
2.5 Product usage limits 17 2.6 Proper use 17 2.7 Foreseeable improper use 17 2.8 Personnel qualification 18
2.8.1 Ensuring personnel qualification 18 2.8.2 Personnel qualification for maintenance and repair 19 2.8.3 Advanced training with Pfeiffer Vacuum 19
3 Product description 20 3.1 Functional description 20 3.2 Identifying the product 20 3.3 Scope of delivery 20
4 Transportation and Storage 22 4.1 Transporting the vacuum pump 22 4.2 Storing the vacuum pump 23
5 Installation 24 5.1 Preparatory work 24 5.2 Installing the vacuum pump 25 5.3 Filling with lubricant 25 5.4 Fill the sealing medium for the axial face seal 26 5.5 Connecting the vacuum side 27 5.6 Connecting the fore-vacuum side 29 5.7 Setting and checking the temperature monitoring 29
5.7.1 Check thermometer installation 30 5.7.2 Arrange a signal evaluation for the thermometer 30
5.8 Establishing mains connection 31 5.8.1 Connect three phase motor with 6-pin terminal board 32 5.8.2 Checking the direction of rotation 33 5.8.3 Connecting the PTC thermistor tripping unit 33
5.9 Assembling the motor and coupling 34
6 Operation 36 6.1 Putting the vacuum pump into operation 36 6.2 Operation with frequency converter 36
6.2.1 Observe the voltage slew rate 36
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6.2.2 Observe the mechanical resonance 36 6.3 Switching on the vacuum pump 37 6.4 Adjusting the sealing gas amount 37 6.5 Monitoring vibrations 38
6.5.1 Monitor the operating condition 40 6.5.2 Monitoring the bearing condition 40 6.5.3 Monitoring the motor condition 41
6.6 Checking the lubricant level 41 6.7 Switching off and venting the vacuum pump 41 6.8 Restarting 42
7 Maintenance 43 7.1 Maintenance information 43 7.2 Checklist for inspection and maintenance 44 7.3 Changing the lubricant 45 7.4 Cleaning the suction chamber 46
8 Decommissioning 48 8.1 Shutting down for longer periods 48 8.2 Recommissioning 48
9 Recycling and disposal 49 9.1 General disposal information 49 9.2 Dispose of Okta roots pumps 49
10 Malfunctions 50
11 Service solutions by Pfeiffer Vacuum 52
12 Spare parts 54 12.1 Ordering spare parts packs 54
13 Accessories 55 13.1 Accessory information 55 13.2 Ordering accessories 55
14 Technical data and dimensions 56 14.1 General 56 14.2 Substances in contact with the media 56 14.3 Technical data 56 14.4 Dimensions 58
Declaration of conformity 59
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List of tables Tbl. 1: Stickers on the product 8 Tbl. 2: Abbreviations used 9 Tbl. 3: ATEX designations 15 Tbl. 4: Potential hazards 16 Tbl. 5: Measures and safety equipment 16 Tbl. 6: Permissible ambient conditions 17 Tbl. 7: Permissible sealing media 26 Tbl. 8: Maximum forces and torques permissible at the connection flange on config-
urations with side-mounted blank flanges 28
Tbl. 9: Maximum forces and torques permissible at the connection flange on config- urations without side-mounted blank flanges
28
Tbl. 10: Thermometer type 29 Tbl. 11: EPL (Equipment protection level) 31 Tbl. 12: Permissible deviation between motor shaft and pump shaft 35 Tbl. 13: Evaluated frequency ranges 40 Tbl. 14: Characteristic bearing damage frequencies of the roots pump 41 Tbl. 15: Characteristic frequencies of the roots pump 41 Tbl. 16: Relevant frequency range of the motor 41 Tbl. 17: Maintenance intervals 45 Tbl. 18: Troubleshooting 51 Tbl. 19: Accessories 55 Tbl. 20: Consumables 55 Tbl. 21: Conversion table: Pressure units 56 Tbl. 22: Conversion table: Units for gas throughput 56 Tbl. 23: Materials that make contact with the process media 56 Tbl. 24: Technical data Okta 18000 ATEX 57
List of tables
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List of figures Fig. 1: Position of the stickers on the product 9 Fig. 2: Okta 18000 ATEX design 20 Fig. 3: Transporting the vacuum pump using a belt 23 Fig. 4: Dismantle the fittings to vent the vacuum pump 24 Fig. 5: Filling with lubricant 26 Fig. 6: Sealing agent container for axial face seal 27 Fig. 7: Loading capacity of the connection flange 28 Fig. 8: Temperature monitoring 30 Fig. 9: Delta connection for low voltage 32 Fig. 10: Star circuit for high voltage 32 Fig. 11: Rotational direction check 33 Fig. 12: Connection example with PTC thermistor tripping unit 34 Fig. 13: Shaft alignment for roots pumps with conventional motor 35 Fig. 14: Position of the vibration sensors 39 Fig. 15: Draining the lubricant 46 Fig. 16: Dimensions Okta 18000 ATEX 58
List of figures
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1About this manual IMPORTANT Read carefully before use. Keep the manual for future consultation.
1.1Validity 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.
1.1.1Applicable documents
Document Number Declaration of conformity Part of this document Technical information on the thermometer Supplier document Installation instructions for axial face seal Supplier document
1.1.2Variants According to identification of the motor:
Okta 18000 ATEX, 3/3G Okta 18000 ATEX, 3/-G
1.2Target group These operating instructions are aimed at all persons performing the following activities on the product:
Transportation Setup (Installation) Usage and operation Decommissioning Maintenance and cleaning Storage or disposal
The work described in this document is only permitted to be performed by persons with the appropriate technical qualifications (expert personnel) or who have received the relevant training from Pfeiffer Vac- uum.
1.3Conventions
1.3.1Instructions 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. ...
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1.3.2Pictographs Pictographs used in the document indicate useful information.
Note
Tip
1.3.3Stickers on the product This section describes all the stickers on the product along with their meanings.
Mod.: Okta 18000 ATEX
Weight: 3000 kg 3
D-35641 Asslar
Made in Germany
Mod.-No.: PP W90 ...
n: max. 2250 1/min Oil: P3 68.0 l
S(N): max. 27400 m /h
07/2020
II 3/3G Ex h IIC T3 Gc X
Ser. -No.: 1234567895
+ 5C T + 40C a=< =<
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 tempera- tures as a result of contact without protection during op- eration.
Vor Inbetriebnahme Pumpe mit l fllen
Fill the pump with oil before putting into operation
Remplir la pompe dhuile avant la mise en route
Sticker (red) Before commissioning, fill the gear and bearing cham- bers with lubricant
Achtung!
nur mit D1 befllen
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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1 2 3
45
Fig. 1: Position of the stickers on the product
1 Direction of rotation arrow (cast in pump housing) 4 D1 lubricant note 2 Hot surface warning sign 5 Fill lubricant note 3 Rating plate
1.3.4Abbreviations
Abbreviation Explanation BA Operating instructions DIN German Institute for Standardization (Deutsches Institut fr Normung) EPL Equipment Protection Level ISO International Organization for Standardization n Rotation speed [Hz] PE Earthed conductor (protective earth) PN Nominal pressure stage (pressure nominal) SI Service instructions WAF width across flats SIL Safety Integrity Level in accordance with safety standard DIN EN 61508
Tbl. 2: Abbreviations used
1.4Trademark proof Loctite is a registered trade mark of HENKEL IP & HOLDING GMBH. Anderol is a registered trade mark of Royal Lubricants Inc., East Hanover N.J., US Shell Morlina is a registered trade mark of SHELL BRANDS INTERNATIONAL AG, 6340, CH
About this manual
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2Safety
2.1General 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.
2.2Safety 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
DANGER Risk of explosion from electrostatic charging during transport There is a risk of fatalities when transporting packaging material (foil) and plastic containers in poten- tially explosive areas. Ignition can cause very serious injuries, and even fatalities.
Only unpack the vacuum pump outside of potentially explosive areas.
DANGER Risk of explosion when carrying out installation and maintenance work in potentially explo- sive areas There is a risk of explosion if unsuitable tools are used in potentially explosive areas. Ignition can cause very serious injuries.
Transport, installation and maintenance work may not be performed in potentially explosive at- mospheres.
Always shut down the vacuum pump before commencing any work.
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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.
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.
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.
WARNING Risk of fatal injury due to electric shock on account of incorrect installation The device's power supply uses life-threatening voltages. Unsafe or improper installation can lead to life-threatening situations from electric shocks obtained from working with or on the unit.
Ensure safe integration into an emergency off safety circuit. Do not carry out your own conversions or modifications on the unit.
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 explosion when the ignition temperature of the pumped medium is reached The missing of the prescribed temperature monitoring leads to an ignition in the suction chamber, once the ignition temperature is reached.
Always monitor the gas temperature in the fore-vacuum flange in order to safely observe temper- ature class T3.
When a gas temperature of 180 C is reached, switch the roots pump off (zero potential).
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CAUTION Danger of injury from moving parts After a power failure or a standstill as a result of overheating, the motor restarts automatically. There is a risk of injury to fingers and hands if they enter the operating range of rotating parts.
Safely disconnect motor from the mains. Secure the motor against reactivation. Dismantle the vacuum pump for inspection, away from the system if necessary.
Risks during operation
DANGER Risk of injury due to the bearing bursting after overheating During longer operation with defective bearings, there is a risk of explosion due to hot surfaces if there is a potentially explosive atmosphere.
Monitor the motor current of the roots pump so that in the event of a process-independent in- crease of the motor current > 10 %, the roots pump is switched off.
As an alternative, perform a vibration measurement at the defined measuring points with the pre- scribed time intervals.
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.
WARNING Danger of poisoning due to toxic process media escaping from the exhaust pipe During operation with no exhaust line, the vacuum pump allows exhaust gases and vapors to escape freely into the air. There is a risk of injury and fatality due to poisoning in processes with toxic process media.
Observe the pertinent regulations for handling toxic process media. Safely purge toxic process media via an exhaust line. Use appropriate filter equipment to separate toxic process media.
WARNING Risk of injury from reactive, potentially explosive or other hazardous gas/air mixtures Uncontrolled gas inlet of air or gases containing oxygen provides ideal conditions for the 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.
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.
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Risks during maintenance, decommissioning and malfunctions
DANGER Risk of explosion when carrying out installation and maintenance work in potentially explo- sive areas There is a risk of explosion if unsuitable tools are used in potentially explosive areas. Ignition can cause very serious injuries.
Transport, installation and maintenance work may not be performed in potentially explosive at- mospheres.
Always shut down the vacuum pump before commencing any work.
DANGER Risk of explosion from electrostatic charging during transport There is a risk of fatalities when transporting packaging material (foil) and plastic containers in poten- tially explosive areas. Ignition can cause very serious injuries, and even fatalities.
Only unpack the vacuum pump outside of potentially explosive areas.
WARNING Health hazard through poisoning from toxic contaminated components or devices Toxic process media result in contamination of devices or parts of them. During maintenance work, there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub- stances causes environmental damage.
Take suitable safety precautions and prevent health hazards or environmental pollution by toxic process media.
Decontaminate affected parts before carrying out maintenance work. Wear protective equipment.
WARNING Danger to life from electric shock in the event of a fault In the event of a fault, devices connected to the mains may be live. There is a danger to life from electric shock when making contact with live components.
Always keep the mains connection freely accessible so you can disconnect it at any time.
WARNING 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 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.
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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 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.
2.3Safety 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. Observe the safety and accident prevention regulations, if necessary wear personal protective
equipment. Check all safety measures at regular intervals. Always ensure a secure connection to the earthed conductor (PE), protection class I. During operation, make sure that plug-and-socket connections are securely fitted. Never operate the vacuum pump with open vacuum flange. Never make your own conversions or modifications to the vacuum pump. Before returning the vacuum pump, observe the notes in the chapter Service.
2.4ATEX classification and safety measures Vacuum pumps of the ATEX series are specially designed and manufactured to comply with the re- quirements of Directive 2014/34/EU regarding the proper use of equipment and protective systems in potentially explosive areas.
With ATEX-certified motor:
II 3/3G Ex h IIC T3 Gc X +5 C Ta +40 C A part of the product does not comply with the ATEX Directive, and cannot therefore be used in
potentially explosive areas (e.g. roots pump without ATEX-certified motor):
II 3/-G Ex h IIC T3 Gc X +5 C Ta +40 C
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2.4.1Labeling of the vacuum pump
Classification Description Device group Devices which can be used for applications in potentially explosive atmospheres
are divided into two groups: Device group I: Devices for mines susceptible to firedamp (will not be discussed in any more detail here) Device group II: Devices for all other potentially explosive areas with the excep- tion of underground operations in mines and their surface installations which are susceptible to hazardous firedamp and / or combustible dust.
Device category Device group II is divided into three categories which vary in their respective de- gree of safety. Devices of Device category 1 are designed to guarantee an extremely high de- gree of safety. They must guarantee the necessary degree of safety even if mal- functions occur only rarely on the device. Devices of Device category 2 are designed to guarantee a high degree of safe- ty. They must guarantee the necessary degree of safety even with regular occur- rences of malfunctions or fault conditions which are generally to be expected. Devices of Device category 3 are designed to guarantee a normal degree of safety. They guarantee the necessary degree of safety for normal operation.
Combustible ma- terials
G: Gases or vapors D: Dust (will not be discussed in any more detail here) Note: The device may only be used in atmospheres susceptible to explo- sion due to gases or vapors. Operation in dust-charged, potentially explo- sive atmospheres is not permitted.
Type of protec- tion
Identification code Ex h designated in the standard DIN EN ISO 80079-36 for non-electrical equipment. A protection type established for electrical equipment is not used.
Explosion groups Gases and vapors are divided into three Explosion groups based on their particu- lar ignition capability (IIA, IIB and IIC). The ignition power in this regard decreas- es from Explosion group IIA to IIC. (The higher Explosion group, e.g. IIC incorpo- rates the respectively lower IIB and IIA).
Temperature class
Classification of equipment depending on their maximum surface temperature, in accordance with assignment as follows: Temperature class --> Maximum surface temperature/gas temperature:
T1 --> +450 C T2 --> +300 C T3 --> +200 C T4 --> +135 C T5 --> +100 C T6 --> +85 C
The temperature class and the actual maximum surface temperature of the units includes a safety margin to the minimum ignition temperature of a potentially ex- plosive atmosphere, as stipulated in DIN EN ISO 80079-36.
EPL according to DIN EN 60079
Equipment protection level EPL Ga: Equipment with extremely high protection level for use in potentially explosive gas atmospheres in which no risk of ignition exists during normal oper- ation, with foreseeable or infrequent faults/malfunctions. EPL Gb: Equipment with high protection level for use in potentially explosive gas atmospheres in which no risk of ignition exists during normal operation, with foreseeable faults/malfunctions. EPL Gc: Equipment with extended protection level for use in potentially explo- sive gas atmospheres in which no risk of ignition exists during normal operation.
X Special operating conditions must be observed! Special conditions and notes in the operating instructions apply.
Ta Permissible ambient temperature for operation of the vacuum pump prescribed on the rating plate.
Tbl. 3: ATEX designations
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2.4.2Potential hazards The ignition hazard assessment for the roots pumps in the ATEX series was performed in accordance with the harmonized standard ISO 80079-36 (Non-electrical equipment for explosive atmospheres - Ba- sic method and requirements). This assessment includes the identification of hazards described as fol- lows which will not occur if the system is operated properly with the respective safety measures.
Potential haz- ard
Occurrence due to Safety measures
Hot surfaces Heating up of compo- nents due to compres- sion work and friction
When used as intended, all surface temperatures are below the measuring gas temperature in the exhaust channel.
Hot gases Compression of the re- quired gases
Measure the gas temperature in the exhaust chan- nel using the supplied thermometer and evaluate the temperatures.
Note the information in the operating instructions of the thermometer.
Mechanical sparks
Contact of the pistons in the suction chamber
The air gaps for the maximum gas temperature are de- signed taking into account a safety factor.
Electrical sparks (depending on the respective outer zone)
Electric motor Use of an explosion protected electric motor is prescri- bed for potentially explosive atmospheres on the out- side.
Observe the marking on the motor rating plate.
Static electricity Vacuum pump not earthed
Integrate the vacuum pump in the equipotential bonding at the installation location.
Chemical reac- tion
Between the process gas and lubricant or be- tween the process gas and components that are part of the housing
Evaluate the process and avoid hazardous process conditions.
Zone entrain- ment
due to leaky vacuum pump
The vacuum pump underwent a final inspection with leak test within the framework of a production control.
Tbl. 4: Potential hazards
2.4.3Safety measures Observe and implement the following safety measures for safe operation of the roots pump in ac-
cordance with the respective device category:
Place Measures/safety equipment Category 3 Specification recom-
mended Piston bear- ing
Regular vibration measurement at the defined measur- ing points and required time intervals
x
Gas outlet temperature
Monitor the gas outlet temperature with the supplied thermometer (see chapter Setting and checking the temperature monitoring, page 29).
x
Tbl. 5: Measures and safety equipment
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2.5Product usage limits 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 wa-
ter, strong drafts and sunlight fire-fighting water lightning strike
Installation altitude according to the motor used. Observe the operating instruc- tions of the motor manufacturer!
Ambient temperature +5 C to +40 C Relative air humidity max. 85 % (depending on the motor version) Orientation Horizontal Pumped medium intake temperature, max.
process-specific
Permanent intake pressure in circu- lation mode
< 1300 hPa (abs.)
Max. speed in circulation mode 2250 rpm Permanent intake pressure in vac- uum mode
depending on max. pressure differential
Max. gas temperature, pressure side 180 C
Tbl. 6: Permissible ambient conditions
2.6Proper use Only use the vacuum pump to create a vacuum in connection with a suitable backing pump. To protect the lubricant, use sealing gas if high boiling or corrosive media (e.g. solvents) are
pumped. Adhere to the installation, commissioning, operating, and maintenance instructions. Use only accessory parts recommended by Pfeiffer Vacuum. Use the vacuum pump to convey potentially explosive atmospheres in accordance with the label-
ing. Observe the corresponding safety measures . Operate the vacuum pump within the application limits of the product and in compliance with the
technical data. When operating the vacuum pump with frequency converter, make sure that the vacuum
pump never exceeds the max. permissible rotation speed, even in the event that the frequen- cy converter malfunctions. Increased bearing wear is therefore avoided.
When operating the vacuum pump with a rotation speed of less than 1500 min-1, as can be the case in windmilling operation for example, you must ensure continuous vibration moni- toring. Therefore any bearing damage that is caused by deficient lubrication can be detected in advance. If this cannot be ensured, you must circumnavigate the vacuum pump by means of a bypass, until it can be operated with the minimum rotation speed.
2.7Foreseeable 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 media which are corrosive to materials of the vacuum pump 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 pressurized media (> atmospheric pressure) Pumping fluids the use of fluids is permitted for cleaning purposes
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Pumping radioactive media Pumping media prone to spontaneous, specific exothermic reactions Use of the vacuum pump for cyclic pumping processes above atmospheric pressure (load lock) Using the vacuum pump in systems in which sporadic loads and vibrations or periodic forces act
on the unit Using the vacuum pump in 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 lubricants not specified by Pfeiffer Vacuum Using the vacuum pump as a climbing aid Overcoating the vacuum pump whereby the permissible layer thicknesses in accordance with
DIN EN ISO 80079-36 are exceeded Use of mineral-based operating fluids, such as P3, with an oxygen concentration > 21 %
Mineral-based operating fluids are combustible and ignite at high temperatures, and when they come into contact with pure oxygen. These operating fluids oxidize heavily and thus lose their lu- bricating capacity.
2.8Personnel 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.
2.8.1Ensuring 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.
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2.8.2Personnel qualification for maintenance and repair
Advanced training courses Pfeiffer Vacuum offers advanced training courses to maintenance levels 2 and 3.
Adequately trained individuals are: Maintenance level 1
Customer (trained specialist) Maintenance level 2
Customer with technical education Pfeiffer Vacuum service technician
Maintenance level 3 Customer with Pfeiffer Vacuum service training Pfeiffer Vacuum service technician
2.8.3Advanced 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.
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3Product description
3.1Functional description The operating principle of the roots pump is based on 2 synchronous pistons that rotate in a housing without touching. The pumping effect is produced as a result of the opposing rotation of 2 figure-of-eight shaped roots 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. A pair of gears positioned on the extended shaft ends, causes the opposing, synchronous running of the roots pistons. 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 ATEX series are equipped with a thermometer.
1
78
2 3 4 5
1112 9101314 6
Fig. 2: Okta 18000 ATEX design
1 Vacuum flange with blank flange 8 Blank flange 2 Lubricant filling plug motor side 9 Axial face seal 3 Eye bolt (3) 10 Lubricant drain plug 4 Ball valve for filling with nitrogen during transport and storage 11 Sight glass 5 Lubricant filling plug gear side 12 Fore-vacuum flange 6 Lubricant drain plug gear side 13 Thermometer 7 Sight glass 14 Sealing gas connection (4)
3.2Identifying the 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 plate:
Pump model Model number Type and quantity of the lubricant Max. allowable pump rotation speed Date of manufacture Input voltage range
3.3Scope of delivery Roots pump with axial face seal, without motor and coupling Connection flanges produced in accordance with PN 10 Seal for the connection flanges Blank flanges Screw kit for the connection flanges 3 eye bolts for lifting the Roots pump
Product description
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Lubricant P3 (for standard pump) Thermometer Fittings with ball valve for venting Locking screw Operating instructions of the roots pump Additional documents for the thermometer Additional documents for the axial face seal
Product description
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4Transportation and Storage
4.1Transporting the vacuum pump
DANGER Risk of explosion from electrostatic charging during transport There is a risk of fatalities when transporting packaging material (foil) and plastic containers in poten- tially explosive areas. Ignition can cause very serious injuries, and even fatalities.
Only unpack the vacuum pump outside of potentially explosive areas.
DANGER Risk of explosion when carrying out installation and maintenance work in potentially explo- sive areas There is a risk of explosion if unsuitable tools are used in potentially explosive areas. Ignition can cause very serious injuries.
Transport, installation and maintenance work may not be performed in potentially explosive at- mospheres.
Always shut down the vacuum pump before commencing any work.
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 transport 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.
Transportation and Storage
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Fig. 3: Transporting the vacuum pump using a belt
Information for transport of the vacuum pump without packaging 3 eye bolts are included in the shipment, which are firmly bolted to the vacuum pump ex-factory.
1. Unpack the vacuum pump. 2. Secure a suitable lifting device onto the 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. Remove the eye bolts after transport and installation.
Keep the eye bolts for future use.
4.2Storing the vacuum pump The roots pumps do not have any corrosion protection on the inside.
Storage Pfeiffer Vacuum recommends storing the products in their original transport packaging.
Procedure 1. Close both connection flanges. 2. Check that the other openings, such as sealing gas connections or measurement connections are
correctly closed. 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.
The best corrosion protection for the roots pump is achieved by evacuating and then filling the suction chamber with nitrogen.
Change the lubricant after a storage period of more than 2 years. 4. 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
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5Installation
5.1Preparatory work
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.
Filling the nitrogen The vacuum pump is filled with nitrogen to protect against corrosion, therefore the suction chamber has a slight over pressure (200 hPa) upon delivery
Prior to installation, you must dismantle the fittings required for nitrogen filling.
Required consumables Seal screw included in scope of delivery
Required tools Hexagon wrench SW 19 Hexagon wrench SW 22 Calibrated torque wrench (tightening factor 2.5)
4
9 8
62 31
7
5
Fig. 4: Dismantle the fittings to vent
