Pfeiffer Vacuum DUO 11 DC User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
DUO 11 DC
Rotary vane pump

Dear Customer,
Thank you for choosing a Pfeiffer Vacuum product. Your new rotary vane pump is designed
to support you by its performance, its perfect operation and without interfering your individual
application. The name Pfeiffer Vacuum stands for high-quality vacuum technology, a
comprehensive and complete range of top-quality products and first-class service. With this
expertise, we have acquired a multitude of skills contributing to an efficient and secure
implementation of our product.
Knowing that our product must not interfere with your actual work, we are convinced that our
product offers you the solution that supports you in the effective and trouble-free execution of
your individual application.
Please read these operating instructions before putting your product into operation for the
first time. If you have any questions or suggestions, please feel free to contact info@pfeiffer-
vacuum.de.
Further operating instructions from Pfeiffer Vacuum can be found in the Download Center on
our website.
Disclaimer of liability
These operating instructions describe all models and variants of your product. Note that your
product may not be equipped with all features described in this document. Pfeiffer Vacuum
constantly adapts its products to the latest state of the art without prior notice. Please take
into account that online operating instructions can deviate from the printed operating
instructions supplied with your product.
Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from
the use of the product that contradicts its proper use or is explicitly defined as foreseeable
misuse.
Copyright
This document is the intellectual property of Pfeiffer Vacuum and all contents of this
document are protected by copyright. They may not be copied, altered, reproduced or
published without the prior written permission of Pfeiffer Vacuum.
We reserve the right to make changes to the technical data and information in this document.
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Table of contents
1 About this manual 5
1.1 Validity 5
1.2 Applicable documents 5
1.3 Target group 5
1.4 Conventions 5
1.4.1 Instructions in the text 5
1.4.2 Pictographs 5
1.4.3 Stickers on the product 6
1.4.4 Abbreviations 7
2 Safety 8
2.1 General safety instructions 8
2.2 Safety instructions 8
2.3 Safety precautions 11
2.4 Safety precautions for vacuum pumps with magnetic coupling 11
2.5 Product usage limits 11
2.6 Proper use 11
2.7 Foreseeable improper use 12
3 Product description 13
3.1 Identifying the product 13
3.2 Shipment 13
3.3 Function 13
3.4 Operating principle 14
4 Transportation and Storage 15
4.1 Transporting the vacuum pump 15
4.2 Storing the vacuum pump 15
5 Installation 17
5.1 Installing the vacuum pump 17
5.2 Connecting the vacuum side 18
5.3 Connecting the exhaust side 18
5.3.1 Install OME 16 S 20
5.3.2 Install ODK 20
5.4 Connecting the voltage supply 21
5.4.1 Motor protection 22
5.5 Filling the operating fluid 22
6 Operation 24
6.1 Putting the vacuum pump into operation 24
6.2 Switching on the vacuum pump 24
6.3 Operating the rotary vane pump with gas ballast 25
6.3.1 Gas ballast valve (standard version) 25
6.3.2 Gas ballast valve with flushing gas connection (option) 25
6.3.3 Gas ballast valve with solenoid valve 26
6.4 Refilling operating fluid 27
6.5 Switching off the vacuum pump 28
6.5.1 Venting the vacuum chamber 28
6.5.2 Maintain vacuum in the vacuum chamber 29
7 Maintenance 30
7.1 Maintenance instructions 30
7.1.1 Maintenance instructions for M or MC version magnetic coupling 30
7.2 Checklist for inspection and maintenance 31
7.3 Changing the operating fluid 32
7.3.1 Draining the operating fluid 33
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7.3.2 Rinsing and cleaning the rotary vane vacuum pump 34
7.4 Cleaning the gas ballast valve 35
7.4.1 Gas ballast valve (standard version) 35
7.4.2 Gas ballast valve with flushing gas connection (option) 37
7.5 Changing the operating fluid type 38
8 Decommissioning 39
8.1 Decommissioning the vacuum pump for longer periods 39
8.2 Recommissioning 39
8.3 Disposing of the vacuum pump 39
9 Malfunctions 40
10 Service solutions from Pfeiffer Vacuum 42
11 Spare parts 44
11.1 Ordering spare parts packs 44
11.1.1Maintenance kit 1 – maintenance level 1 44
11.1.2Radial shaft seal ring set – maintenance level 2 45
11.1.3Maintenance kit 2 – maintenance level 2, extended 45
11.1.4Overhaul kit – maintenance level 3 45
11.1.5Set of vanes 45
11.1.6Coupling set for versions with magnetic coupling 45
12 Technical data and dimensions 46
12.1 General 46
12.2 Technical data 46
12.3 Dimensions 47
13 Accessories 48
Declaration of conformity 49
Table of contents
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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.
1.2 Applicable documents
Designation Document
Declaration of conformity A component of these instructions
1.3 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.
1.4 Conventions
1.4.1 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. ...
1.4.2 Pictographs
Pictographs used in the document indicate useful information.
About this manual
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Note
Tip
1.4.3 Stickers on the product
This section describes all the stickers on the product along with their meaning.
D-35641 Asslar
Mod.: DUO 11 DC
Mod.-Nr.: PK D59 XXX
Ser.- Nr.: 0014440
S : max. 9 m /h
Oil : Inland 45 0.5 l
Mass : 9 kg
n : 3000 1/min
(N )
2
3
max.
Made in Germany 2018/01
VACUUM
Rating plate (example)
The rating plate is located on the front right side next to the sight glass.
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)
Fill pump with operating fluid prior to commissioning
Warning hot surface
This sticker warns of injuries caused by high temperatures in case of
touching without protection during operation.
warranty seal
Closure seal
The product is sealed ex-factory. Damaging or removing a closure seal
results in loss of the warranty.
Tbl. 1: Stickers on the product
123
4
Fig. 1: Position of the labels on the product
1 Rating plate 3 Warning notice: hot surface
2 Sticker: Fill pump with operating fluid prior to commissioning 4 Closure seal
About this manual
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1.4.4 Abbreviations
Abbreviation Explanation
DC version Direct Current
M version Version with magnetic coupling
OME Oil mist filter (Oil Mist Eliminator)
ODK Operating fluid return line (Oil Drain Kit)
RSSR Radial shaft seal ring
WAF width across flats
Tbl. 2: Abbreviations used in this document
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
Danger of serious injury due to falling objects
Due to falling objects there is a risk of injuries to limbs through to broken bones.
►Take particular care and pay special attention when transporting products manually.
►Do not stack the products.
►Wear protective equipment, e.g. safety shoes.
Risks during installation
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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WARNING
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
►Observe the application instructions and precautions.
►Do not allow tobacco products to come into contact with the operating fluid.
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.
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
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.
WARNING
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
►Observe the application instructions and precautions.
►Do not allow tobacco products to come into contact with the operating fluid.
Risks during maintenance, decommissioning and in event of 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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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.
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 ac-
cess for people with pacemakers"
►Always keep disassembled couplings away from computers, data carriers, and other electronic
components.
WARNING
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
►Observe the application instructions and precautions.
►Do not allow tobacco products to come into contact with the operating fluid.
WARNING
Health hazard and risk of environmental damage from toxic contaminated operating fluid
Toxic process media can cause operating fluid contamination. When changing the operating fluid,
there is a health hazard due to contact with poisonous substances. Illegal disposal of toxic substan-
ces causes environmental damage.
►Wear suitable personal protective equipment when handling these media.
►Dispose of the operating fluid according to locally applicable regulations.
CAUTION
Scalding from hot operating fluid
Danger of burns when draining operating fluid in case of skin contact.
►Wear protective equipment.
►Use a suitable collection receptacle.
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.
CAUTION
Danger of burns on hot surfaces
In the event of a fault, the surface temperature of the vacuum pump can increase to above 105°C.
►Allow the vacuum pump to cool down before working on it.
►Wear personal protective equipment if necessary.
Safety
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2.3 Safety precautions
Duty to provide information on potential dangers
The product holder or user is obliged to make all operating personnel aware of 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 when handling the product
►Observe all applicable safety and accident prevention regulations.
►Check that all safety measures are observed at regular intervals.
►Do not expose body parts to the vacuum.
►Always ensure a secure connection to the earthed conductor (PE).
►Never disconnect plug connections during operation.
►Observe the above shutdown procedures.
►Keep lines and cables away from hot surfaces (> 70°C).
►Never fill or operate the unit with cleaning agents or cleaning agent residues.
►Do not carry out your own conversions or modifications on the unit.
►Observe the unit protection class prior to installation or operation in other environments.
►Provide suitable touch protection, if the surface temperature exceeds 70°C.
2.4 Safety precautions for vacuum pumps with magnetic coupling
The following safety instructions are only valid for the working with a drive system of a vacuum pump
with a magnetic coupling:
Safety precautions
►Keep a magnetic coupling away from people with pacemakers.
–Minimum distance: 2 m
►Avoid convergence of magnetic coupling components.
►Keep magnetized parts away from the magnetic coupling.
►Always keep a disassembled magnetic coupling away from computers, data carriers, and other
electronic components.
–The magnetic coupling can influence operational reliability of electrical and electronic devi-
ces.
2.5 Product usage limits
Parameter DuoLine
Ambient temperature -20 °C to +40 °C
Pumped medium intake temperature, max. +40 °C
Tbl. 3: Usage limits of the vacuum pump
2.6 Proper use
Procedure
►Use the vacuum pump for vacuum generation only.
Safety
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►When pumping media with an oxygen concentration level of ≥ 21 %, only use perfluorinated, syn-
thetic oils (F4, F5, A113) as operating fluid.
►Adhere to the installation, commissioning, operating, and maintenance instructions.
►Do not use any accessory parts other than those recommended by Pfeiffer Vacuum.
2.7 Foreseeable improper use
Improper use of the product invalidates all warranty and liability claims. Improper use is any, even unin-
tended, use, which is contrary to the product purpose; and in particular:
●Pumping of corrosive media (exception: C version of the rotary vane vacuum pumps)
●Pumping radioactive media
●Pumping of gases that introduce an ignition source to the suction chamber
●Pumping of gases that contain impurities such as particles, dust, or condensate
●Pumping explosive media
●Pumping of media with a propensity to sublimation
●Pumping of fluids
●Use of the vacuum pump in potentially explosive atmospheres
●Use of the vacuum pump outside the specified area of application
●Use for pressure generation
●Use in strong electrical, magnetic, or electromagnetic fields
●Connection to vacuum pumps or equipment which are not suitable for this purpose according to
their operating instructions
●Connection to devices with exposed live parts
●Use of accessories or spare parts not listed in these instructions
●Use of operating fluids other than those specified by Pfeiffer Vacuum
●Use of D1 or mineral oil as operating fluid with an oxygen concentration level of > 21 %
Mineral oils are combustible and ignite in high temperatures and when they come into contact with
pure oxygen. This oils oxidize heavily and thus lose their lubricating capacity.
Safety
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3 Product description
3.1 Identifying the product
Procedure
►To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
►Note motor-specific data on the separately attached mototr rating plate.
►Learn about certifications through test seals on the product or at www.tuvdotcom.com with com-
pany ID no. 000021320.
3.2 Shipment
●Vacuum pump with motor
●Operating fluid Inland 45
●Cone sieve with centering ring and O-ring for both connection flanges
●Locking caps for both connection flanges
●Operating instructions
3.3 Function
DuoLine rotary vane vacuum pumpsTM are two-stage oil-sealed rotary positive displacement pumps for
use in coarse and medium vacuum. The vacuum pumps are equipped with a safety valve that vacuum
seals the vacuum chamber and simultaneously vents the vacuum pump when the pump is at a stand-
still. The rotary vane vacuum pump is available in the standard version with a conventional seal, or as
an M version with non-contact and wear-proof drive with magnetic coupling. The pump housing is her-
metically sealed.
1234
65
7
8
9
Fig. 2: Structure of the rotary vane vacuum pump
1 Vacuum flange 6 Connection for the operating fluid return
2 Exhaust flange 7 Filling screw for operating fluid
3 DC motor 8 Drain screw for operating fluid
4 24 V/DC supply voltage connecting cable 9 Sight glass
5 Gas ballast valve
Product description
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3.4 Operating principle
1
3
4
5
62
Fig. 3: UnoLine and DuoLine operating principle
1 Housing 4 Suction chamber
2 Rotor 5 Exhaust (outlet)
3 Vane 6 Vacuum flange (inlet)
The rotary vane pump is an oil-sealed rotary displacement pump. The pumping system is made up of
the housing, the eccentrically mounted rotor, and the centrifugally- and spring-loaded radially sliding
vanes, which divide the suction chamber into multiple chambers. The volume of each chamber changes
periodically as the rotor rotates. This causes the gas to be drawn in at the vacuum flange, and com-
pressed in the suction chamber by the rotation of the rotor until the exhaust valve opens against the
atmospheric pressure at the outlet and expels the gas. The exhaust valve is oil-sealed. When the valve
opens, a small quantity of oil penetrates into the suction chamber. In addition to lubrication, this also
causes the gaps between the rotor, stator, and vanes to seal.
Vacuum safety valve
Depending on the pump type, rotary vane pumps are equipped with a vacuum safety valve. This sepa-
rates the rotary vane pump from the vacuum chamber in the event of intentional or unintentional stand-
still, and vents the pumping system with the displaced gas so that oil does not rise into the vacuum
chamber. After switching on, the valve opens after a delay.
Gas ballast valve
The gas ballast device is used to blend ambient air or inert gas with the process gas in the pumping
system. Increasing the air content compresses and expels a pumped gas/vapor mixture within specific
limits, without causing condensation in the suction chamber.
Operating fluid, oil
The pump oil, also known as operating fluid, fulfills various tasks in a rotary vane pump:
●lubrication of all moving parts
●filling part of the dead volume under the exhaust valve
●sealing the gap between the intake and exhaust channel, and between the vanes and the working
chamber
●ensuring an optimal temperature balance through heat transfer
Product description
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4 Transportation and Storage
4.1 Transporting the vacuum pump
Pfeiffer Vacuum recommends keeping the transport packaging and original protec-
tive cover.
WARNING
Danger of serious injury due to falling objects
Due to falling objects there is a risk of injuries to limbs through to broken bones.
►Take particular care and pay special attention when transporting products manually.
►Do not stack the products.
►Wear protective equipment, e.g. safety shoes.
Instructions for safe transport
1. Observe the weight specified on packaging.
–Use a transport aid if necessary (trolley, lift truck).
2. Transport the product in its original packaging.
1
Fig. 4: Lifting and transporting the vacuum pump
1 Protective cap
Transport without packaging
1. Unpack the vacuum pump.
2. To protect the inside of the pump, leave both protective covers on the connection flanges during
the transport phase.
3. Lift the vacuum pump out of the transport packaging by hand.
4.2 Storing the vacuum pump
Pfeiffer Vacuum recommends storing the products in their original transport pack-
aging.
Procedure
1. Fill the vacuum pump with operating fluid up to the upper edge of the sight glass.
2. Close both connection flanges and all openings on the vacuum pump.
Transportation and Storage
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3. Make sure that the gas ballast valve is closed.
4. Store the vacuum pump only in dry, dust-free rooms, within the specified ambient conditions.
5. In rooms with humid or aggressive atmospheres: Hermetically seal the vacuum pump together
with a drying agent in a plastic bag.
6. Change the operating fluid if the storage period is longer than 2 years.
Transportation and Storage
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5 Installation
5.1 Installing the vacuum pump
Installation location ●Indoors, protected from dust deposits
●Outdoors, protected from direct weather influences
Installation altitude max. 2000 m
Orientation as level as possible; max. permissible angle of inclination: ±10°
Ambient temperature -20 °C to +40 °C
Relative air humidity max. 85%
Tbl. 4: Ambient conditions
max. 10
°
> 35 mm
Fig. 5: Minimum distances and permissible inclination
Notes on installing the vacuum pump
1. Fill with operating fluid prior to first commissioning.
–Quantity and type according to rating plate.
2. Place the vacuum pump on a flat, horizontal surface, to safeguard the operating fluid supply.
3. Screw the base plate of the vacuum pump to the mounting surface if necessary.
4. When installing the pump in a closed housing, ensure adequate air circulation.
5. Keep the sight glass and gas ballast valve visible and freely accessible.
6. Keep the voltage and frequency specifications on the motor rating plate visible and freely accessi-
ble.
Installation
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5.2 Connecting the vacuum side
1
2
3
4
Fig. 6: Vacuum connection with flange connection
1 Protective cap 3 Cone sieve with O-ring
2 Intake line 4 Circlip
Before establishing the flange connection, make sure that the cone sieve and centering ring are in the
intake duct.
1. Remove the protective cap from the vacuum flange.
2. Make sure that the cone sieve and centering ring are in the vacuum flange.
3. Establish the shortest possible connection between the vacuum pump and vacuum chamber;
equivalent to the nominal flange diameter as a minimum.
4. Depending on the pump type, use metallic hoses or PVC hoses with flange connections.
5. Support or suspend the piping to the vacuum pump so that no piping system forces act on the
vacuum pump.
6. Connect both flanges with a circlip (DN 16 ISO-KF).
7. Protect the vacuum pump from sucking in impurities through suitable measures.
8. Use a separator or filter from the Pfeiffer Vacuum line of accessories if necessary.
5.3 Connecting the exhaust side
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.
Installation
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CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or short exhaust lines cause hazardous situations, e.g. exhaust pressure increase. There is a
danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and damage
to the unit cannot be excluded.
►Open shut-off units immediately before or at the same time as starting the pump.
►Observe the maximum permissible pressure of 1,500 hPa (absolute).
►Observe the permissible pressures and pressure differentials for the product.
►Check the function of the exhaust line on a regular basis.
NOTICE
Malfunction and damage to the vacuum pump from inadmissible exhaust line installation
Negative pressure in the exhaust line causes malfunctions and damage to the vacuum pump. Nega-
tive pressure is permitted only in rotary vane vacuum pumps with magnetic coupling.
►When dissipating gases, make sure that the exhaust pressure is at least 250 hPa higher than the
intake pressure.
12
3
4
5
Fig. 7: Exhaust connection with flange connection
1 Exhaust line 4 Centering ring with cone sieve
2 Protective cap 5 Circlip
3 O-ring
Connecting the exhaust side
1. Remove the protective cap from the exhaust flange.
2. Be careful with the cone sieve and O-ring.
3. Choose a minimum exhaust line cross section equal to the nominal diameter of the connection
flange.
4. Depending on the pump type, use metallic hoses or PVC hoses with flange connections.
5. Route the piping downwards from the vacuum pump, to prevent condensate return.
6. Support or suspend the piping to the vacuum pump so that no piping system forces act on the
vacuum pump.
7. Connect both flanges with a suitable circlip.
Installation
19/50

1. Install a condensate separator in the exhaust line if necessary, in order to pre-
vent condensate return.
2. Use the lowest exhaust line point for the condensate drain.
5.3.1 Install OME 16 S
With a high gas throughput, Pfeiffer Vacuum recommends the optional use of an oil mist filter
(OME 16 S). It prevents oil mist from escaping at the exhaust and collects the oil separated in the hous-
ing of the separator.
3
4
1
5
2
Fig. 8: Install OME 16 S on the exhaust flange
1 OME 16 S 4 Centering ring with cone sieve
2 Circlip 5 Protective cap
3 O-ring
Install OME 16 S
1. Switch off the vacuum pump.
2. Allow the vacuum pump to cool down.
3. Install the OME 16 S on the exhaust side of the vacuum pump.
4. Connect both flanges using a circlip (DN 16 ISO-KF) and at the same time, observe the correct fit
of the O-ring.
5.3.2 Install ODK
The installation of an operating fluid return line (OKD) between the OME and the vacuum pump that
returns the separated oil to the vacuum pump via a hose is optional.
Installation
20/50