Pfeiffer Vacuum ACP 28 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
ACP 28 - 40
Multi-stage Roots pump, air cooled

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 Products concerned 7
1.2 Conventions 7
1.2.1 Pictographs 7
1.2.2 Target group 8
1.2.3 Instructions in the text 8
1.2.4 Labels 8
2 Safety 10
2.1 General safety information 10
2.1.1 Safety instructions 10
2.1.2 Precautions 12
2.2 Intended use 12
2.3 Foreseeable misuse 12
3 Transportation and Storage 13
3.1 Receipt of the product 13
3.2 Handling 13
3.3 Storage 14
4 Product description 15
4.1 Product identification 15
4.1.1 Scope of delivery 15
4.1.2 Differences between pump versions 15
4.2 Human/Machine Interface 16
5 Installation 17
5.1 Installation 17
5.2 Connecting to the pumping line 17
5.2.1 Connection on the pump inlet side 18
5.2.2 Connection on the pump exhaust side 18
5.2.3 Connecting CP version pumps 19
5.2.4 Connecting the purge circuit 19
5.3 Check that the installation is leaktight 20
5.4 Electrical connection 20
5.4.1 Customer electrical installation protection 21
5.4.2 Mains connection 21
5.5 Remote connector wiring 21
5.5.1 Logic input wiring 21
5.5.2 Setting of the rotation speed 22
5.5.3 Logic output wiring 22
5.6 Wiring the RS-485 serial link 23
5.6.1 Connections 23
5.6.2 Setting 24
5.6.3 Command list 25
6 Operation 27
6.1 Preliminary precautions for use 27
6.2 Matrix gas/applications 28
6.3 Different control modes 29
6.3.1 Local mode operation 29
6.3.2 Remote control mode operation 30
6.3.3 Operation in RS-485 link mode 30
6.4 Operation monitoring 31
6.5 Gas ballast operation 31
Table of contents
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6.6 Purge operation 32
6.7 Gas ballast and purge operation on CV version 32
7 Maintenance 34
7.1 Maintenance safety instructions 34
7.2 Maintenance frequency 35
7.3 On-site maintenance 35
7.4 Exchange procedure for replacement products 36
7.4.1 Disconnecting the pump from the installation 37
7.4.2 Preparing the pump for shipping 37
8 Decommissioning 38
8.1 Extended Immobilization 38
8.2 Recommissioning 38
8.3 Disposal 38
9 Malfunctions 39
9.1 Trouble at pump start-up 39
9.2 The pump runs incorrectly 39
10 Service solutions by Pfeiffer Vacuum 41
11 Accessories 43
12 Technical data and dimensions 44
12.1 General 44
12.2 Technical characteristics 44
12.2.1Environmental conditions 45
12.2.2Nitrogen characteristics 46
12.2.3Electrical characteristics 46
12.3 Dimensions 46
12.4 Weight distribution and center of gravity 49
12.5 Load on foot with fastening set 50
ETL Mark 51
Declaration of conformity 52
Table of contents
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List of tables
Tbl. 1: Rotation speed 22
Tbl. 2: Default serial link configuration 23
Tbl. 3: Meaning of the indicator lights 31
Tbl. 4: Various gas ballast models 32
Tbl. 5: ACP 28 technical characteristics 44
Tbl. 6: ACP 40 technical characteristics 45
Tbl. 7: Conversion table: Pressure units 45
Tbl. 8: Conversion table: Units for gas throughput 45
Tbl. 9: Nitrogen characteristics 46
Tbl. 10: Electrical network protection 46
List of tables
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List of figures
Fig. 1: Safety label locations 9
Fig. 2: ACP 28 - 40 - CV version with single-phase frequency converter 16
Fig. 3: ACP 28 - 40 - Versions SD - SH - G - CP - LG with single-phase frequency
converter
16
Fig. 4: Remote control connector wiring 22
Fig. 5: Logic output wiring 22
Fig. 6: Male 15-pin RS-485 connector 23
Fig. 7: Cover plug with strap for operation in local mode 29
Fig. 8: Dimensions ACP 28 - 40 versions SD - SH - LG - G 47
Fig. 9: Dimensions ACP 28 - 40 versions CV 47
Fig. 10: Dimensions ACP 28 - 40 versions CP 48
Fig. 11: Wheel set dimensions 49
Fig. 12: Fastening set dimensions 49
List of figures
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1 About this manual
IMPORTANT
Read carefully before use.
Keep the manual for future consultation.
1.1 Validity
This operating instructions is a customer document of Pfeiffer Vacuum. The operating instructions de-
scribe the functions of the named product and provide the most important information for the safe use of
the device. The description is written in accordance with the valid directives. The information in this op-
erating instructions refers to the product's current development status. The document shall remain valid
provided that the customer does not make any changes to the product.
1.1.1 Applicable documents
Document Reference
Declaration of conformity included with these operating instructions
UL/CSA compliance (ETL mark) included with these operating instructions
1.1.2 Products concerned
This document applies to products equipped with P0568E1 frequency converter, and with the following
part numbers:
Part Number Model Description
V6SAXXGXXX ACP 28 SD Models for standard applications
V8SAXXGXXX ACP 40 SD
V6GAXXGXXX ACP 28 G Models for applications with traces of corrosive gases
V8GAXXGXXX ACP 40 G
V6GVXXGXXX ACP 28 CV Models for pumping condensable vapors
V8GVXXGXXX ACP 40 CV
V6SHXXGXXX ACP 28 SH Models for gas pumping applications with N.E.G. pumps (Non-Evapo-
rable Getter)
V8SHXXGXXX ACP 40 SH
V6SLXXGXXX ACP 28 LG Models for light gas pumping applications
V8SLXXGXXX ACP 40 LG
V6SCXXGXXX ACP 28 CP Models for applications with chemically inert gas recirculation or re-
covery
V8SCXXGXXX ACP 40 CP
The part numbers such as VXSXXXXXXX, VXGXXXXXXX concern products that feature the client’s
specifications: these are documented in another document. Nevertheless, these products are still used
for a similar purpose, and it is the operator’s responsibility to use this manual in conjunction with the
additional document.
1.2 Conventions
1.2.1 Pictographs
Pictographs used in the document indicate useful information.
About this manual
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Note
Tip
1.2.2 Target group
This user manual is intended for all persons in charge of transport, installation, commissioning/decom-
missioning, use, maintenance or storage of the product.
The work described in this document must only be carried out by persons with suitable technical training
(specialized staff) or persons who have undergone Pfeiffer Vacuum training.
1.2.3 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. ...
1.2.4 Labels
CP PORT Connecting the housing pump (CP version)
I/O Pump Start/Stop
INLET Pump inlet connection
PUMP EXHAUST Pump exhaust
Product rating plate (example).
P0568E1
AC Rating 110-230V 50/60Hz 15-10A
Frequency inverter serial n°
Reference
This label indicates the voltage of the equipment to which the pump is to be
connected.
This label indicates that the pump is compliant with UL/CSA tests.
1
CAUTION
Use suitable power supply cord
for required voltage
Hot surface
Do not touch
See user’s manual
ATTENTION
Utiliser le câble d’alimentation
adapté pour la tension requise
Surface chaude
Ne pas toucher
Consulter les documents joints
This label warns the user against potential risks associated with the use of
this product. Any person responsible for installation or operation of the
product must first refer to the operating manual.
2 This label indicates that the power supply must be switched off before con-
necting and/or disconnecting the pump. Any person responsible for installa-
tion or operation of the product must first refer to the operating manual.
About this manual
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3 This label warns users about the risk of crushing or cutting due to moving
parts: keep a safe distance and/or keep your hands away from the moving
parts.
4
WARNING
HAZARDOUS VOLTAGE
Contacts may cause
electric shock or burn.
Turn off & lock out
system before servicing.
This label indicates that certain internal components carry an electric
charge and can cause electric shock if touched: before working on the
pump, always either disconnect it, or lock out/tag out the installation break-
er in the appropriate manner.
5
HOT SURFACE INSIDE
Contact may cause burn.
Do not touch or wear protective gear
before servicing internal parts.
This label warns users that they risk being injured if their hands come into
contact with a hot surface: wear protective gloves before any intervention.
6 This label indicates that the product should not be handled manually due to
its weight and that appropriate handling devices should always be used.
7
DRAINABLE SILENCER MUST BE
INSTALLED HORIZONTALLY
This label indicates the installation position of the accessory (CV version).
8
SEISMIC TIE DOWN
A 329 962 - 5
This label indicates the location of the holes for seismic bracket installation.
The product comes with a sheet of labels including other language
versions. The installer must stick these labels to the most appropriate
and visible place on the pump to warn the operator about potential
hazards:
1
3
45
6
8
7
2
Fig. 1: Safety label locations
1 Security warning 5 Hot surface
2 Electrical safety 6 Heavy object
3 Moving parts 7 External silencer position (CV version)
4 Electric shock hazard 8 Seismic brackets anchor point
About this manual
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2 Safety
2.1 General safety information
The following 4 risk levels and 1 information level are taken into account in this document.
DANGER
Immediately pending danger
Indicates an immediately pending danger that will result in death or serious injury if not observed.
►Instructions to avoid the danger situation
WARNING
Potential pending danger
Indicates a pending danger that could result in death or serious injury if not observed.
►Instructions to avoid the danger situation
CAUTION
Potential pending danger
Indicates a pending danger that could result in minor injuries if not observed.
►Instructions to avoid the danger situation
NOTICE
Danger of damage to property
Is used to highlight actions that are not associated with personal injury.
►Instructions to avoid damage to property
Notes, tips or examples indicate important information about the product or about this docu-
ment.
2.1.1 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.
WARNING
Risk of crushing when the product is suspended
Given the heaviness of the product, there is a risk of crushing during handling operations involving
lifting devices. Under no circumstances shall the manufacturer be liable if the following instructions
are not followed:
►Only qualified staff trained in handling heavy objects are authorized to handle the product.
►The lifting devices provided must be used and the procedures set out in this document must be
followed.
WARNING
Risk of electric shock due to non-compliant electrical installations
This product uses mains voltage for its electrical supply. Non-compliant electrical installations or in-
stallations not done to professional standards may endanger the user’s life.
►Only qualified technicians trained in the relevant electrical safety and EMC regulations are au-
thorized to work on the electrical installation.
►This product must not be modified or converted arbitrarily.
Safety
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WARNING
Danger of electrocution by contact during maintenance or overhaul
There is an electric shock hazard in case of contact with a product powered on and not electrically
isolated.
►Before carrying out any work, set the main switch to O.
►Disconnect the power cable from the mains.
►Secure the installation correctly by tagging and locking (LO/TO) the system to prevent uninten-
tional re-engagement.
WARNING
Risk of poisoning when process gases are present in the atmosphere
The manufacturer has no control over the types of gases used with the pump. Process gases are of-
ten toxic, flammable, corrosive, explosive and/or otherwise reactive. There is a risk of serious or fatal
injury if these gases are allowed to escape freely into the atmosphere.
►Apply the relevant safety instructions in accordance with local regulation. This information is
available from the operator’s safety department.
►The pump exhaust must be connected to the installation’s dangerous gases extraction sys-
tem.
►Regularly check that there are no leaks where the pump connects to the exhaust pipework.
WARNING
Risk of injury in case of contact with pressurized nitrogen
The product uses pressurized nitrogen as a flushing gas. Non-compliant installations or installations
not done to professional standards may endanger the user’s life.
►Install a manual valve on the circuit at a distance of 3 m from the product, so that the nitrogen
supply can be locked out.
►Observe the recommended supply pressure.
►Always lock out and disconnect the nitrogen circuit before working on the product.
►When carrying out maintenance, secure the installation properly by locating and locking out the
pressurized nitrogen circuit to prevent it from being re-engaged by accident (LO/TO Lock
Out/Tag Out procedure).
►Regularly check the condition of the pipework and supply circuit connections.
WARNING
Risk of burns in case of contact with hot surfaces
Component temperature remains high, even after the pump has stopped. There is a risk of burns
through contact with hot surfaces, especially at the pump exhaust.
►Wait for the product to fully cool down before working on it.
►Protective gloves must be worn in accordance with standard EN420.
WARNING
Risk of crushing and/or cutting in case of contact with moving parts
The pump inlet flange is large enough for body parts (fingers or hands) to the inserted into it, present-
ing a risk of crushing due to contact with moving parts. The inlet and exhaust ports should be sealed
with blanking plates before connection.
►Wait for the pumping line to be connected before removing the blanking plates.
►Wait for the pump to be connected before powering on.
Safety
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2.1.2 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.
Only qualified personnel trained in safety regulations (EMC, electrical safety, chemical pollution) are au-
thorized to carry out the installation and maintenance described in this manual. Our service centers can
provide the necessary training.
►Do not expose any part of the human body to the vacuum.
►Comply with all safety and risk prevention instructions in accordance with local safety standards.
►Regularly check compliance with all precautionary measures.
►Do not remove the blanking plates sealing the inlet and exhaust ports if the product is not con-
nected to the pumping line.
►Do not operate the product unless the inlet and exhaust are connected to a vacuum and exhaust
pumping line.
2.2 Intended use
●The vacuum pump should only be used to generate a vacuum while pumping gases.
●The vacuum pump is designed to operate in industrial environments.
●The product may be used in a laboratory environment.
●The G version is used to pump traces of corrosive gases.
2.3 Foreseeable misuse
Misuse of the product will render the warranty and any claims void. Any use, whether intended or not,
that diverges from the uses already mentioned will be treated as non-compliant; this includes but is not
limited to:
●Pumping of flammable and explosive mixtures
●Pumping of corrosive gases (exception: pumps in G version for traces of corrosive gases)
●Pumping liquids
●Pumping dust particles
●Using the vacuum pump to generate pressure
●Using the pump in potentially explosive areas
●Using accessories or spare parts not mentioned in these operating instructions
The product is not designed to carry people or loads and should not be used as a seat, stepladder or
similar.
Safety
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3 Transportation and Storage
3.1 Receipt of the product
Condition of the delivery
●Check that the product has not been damaged during transport.
●If the product is damaged, take the necessary measures with the carrier and notify the
manufacturer.
►Keep the product in its original packaging so it stays as clean as it was when dispatched by us.
Only unpack the product once it has arrived at the location where it will be used.
►Keep the blanking plates in place on the inlet, exhaust and purge ports while the product is not
connected to the pumping line.
Keep the packaging (recyclable materials) in case the product needs to be transported or
stored.
3.2 Handling
WARNING
Risk of crushing when the product is suspended
Given the heaviness of the product, there is a risk of crushing during handling operations involving
lifting devices. Under no circumstances shall the manufacturer be liable if the following instructions
are not followed:
►Only qualified staff trained in handling heavy objects are authorized to handle the product.
►The lifting devices provided must be used and the procedures set out in this document must be
followed.
WARNING
Risk of crushing related to product tilting
Although the product fully complies with the EEC safety regulations, there is a risk of tilting when it is
moved over the floor or is not properly secured.
►Do not place the product on an inclined plane.
►Place it on a flat, hard floor.
►Do not push the product sideways.
Transportation and Storage
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Handling the pump using a hoist
1. Use a lifting device suitable for the product’s weight.
2. Use a 2-strap sling with the following characteristics:
–length of each strap > 605 mm
–load per strap > 16 kg
3. With the sling, lift the pump using the hoisting ring.
A wheel set is available as accessory: fitted over the frame, it facilitates the movement of the pump over
short distances (see chapter “Dimensions”, page 46).
3.3 Storage
Pfeiffer Vacuum recommends storing the products in their original transport packaging.
Storing a new pump
1. Keep the pump wrapped in its protective envelope.
2. Always leave inlet, exhaust and purge protections in place.
3. Store the pump in line with the permitted storage temperatures for a maximum period of 1 year.
Storing a new pump for longer than 1 year
Run the pump regularly at least once a year: factors such as temperature, degree of humidity, salt air,
etc. may cause the deterioration of the pump components.
1. Let the pump run for 30 minutes with gas ballast opened or while injecting a dry neutral gas into
the pump (G version).
2. Let the pump run for 30 minutes at ultimate pressure (inlet, gas ballast and purge ports closed).
3. Stop the pump.
4. Seal the pump inlet, exhaust and purge ports with included accessories.
5. Repeat this at least once a year.
Beyond 4 years, the pump must be reviewed at our service centers before commissioning (see chap-
ter “Service solutions by Pfeiffer Vacuum”, page 41).
For prolonged immobilization after use, see chapter “Extended Immobilization”.
Transportation and Storage
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4 Product description
4.1 Product identification
To correctly identify the product when communicating with our service center, always have the informa-
tion from the product rating plate available (see chapter "Labels").
4.1.1 Scope of delivery
●1 vacuum pump
●1 remote cover plug for remote connector (connected to the pump)
●1 operating instruction manual
●1 sheet of multilingual labels
According to the ordering configuration:
●1 mains supply cable
4.1.2 Differences between pump versions
The multi-stage Roots pump technology in the ACP series meets the requirements of applications
where a clean and dry vacuum is needed.
SD standard version
The pump is designed for clean (dust-free) and non-corrosive gas pumping applications. Standard
pumps are equipped with a gas ballast device to improve pumping of light gases and avoid vapor con-
densation inside the pump.
G version
The pump is compatible with traces of corrosive gases. A purge gas stream protects low- and high-
pressure ball bearings and dilutes trace amounts of corrosive gases.
CV version
The pump is specially designed to prevent vapor condensation inside the pumping module with:
●A high gas ballast flow to warm up the pump and dilute condensable gases.
●An external drainable silencer to remove liquid from the pump exhaust.
●A gas purge to protect lip seals and ball bearings from condensable vapors.
CV versions extend the pure water vapor pumping capacity.
CP version
The pump design is based on a standard pump. It is specially made to recirculate gas or to recover
chemically inert gas. This refers to helium isotopes or rare gases, which are costly. The pump has a
pumping device on the housing but does not have a gas ballast or purge to prevent incorrect use.
LG version
The pump design is based on a standard pump. It is designed for pumping light gases (for example: He,
H) for ultimate pressures < 10 hPa. It has an ON/OFF manual gas ballast and a permanent air injection
line with a reduced flow. It can be used for fore pumping a turbomolecular pump used in high-vacuum
processes.
SH version
The pump design is based on a standard pump. It is used in applications where the backstreaming of
fluorine is critical, in particular those installations that use NEG (Non-Evaporable Getter pump) ion
pumps. The lubricants and seals used do not contain fluorine compounds.
Please contact Pfeiffer Vacuum for more detailed information on specific applications.
Product description
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4.2 Human/Machine Interface
1 2 43 5 876 9 121110
Fig. 2: ACP 28 - 40 - CV version with single-phase frequency converter
1 Inert gas purge connection 7 Hour counter
2 Pump inlet 8 RJ45 connector
3 Gas ballast 9 I/O main switch
4 Hoisting ring 10 Mains power supply
5 Indicator lights 11 Pump exhaust
6 Remote connector and RS-485 connector 12 External silencer (CV version)
1 2 43 5 8 11
1213
76 9 10
Fig. 3: ACP 28 - 40 - Versions SD - SH - G - CP - LG with single-phase frequency converter
1 Inert gas purge connection (G version) 8 RJ45 connector
2 Pump inlet 9 I/O main switch
3 Gas ballast (SD - LG version) 10 Mains power supply
4 Hoisting ring 11 Pump exhaust
5 Indicator lights 12 Air injection (LG version)
6 Remote connector and RS-485 connector 13 Housing pumping (CP version) labeled ‘CP PORT’
7 Hour counter
Product description
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5 Installation
5.1 Installation
The pump needs to operate in a horizontal position resting on its feet, the pumping axis must be verti-
cal, and the pump inlet must be on top.
1. Determine where the pump will be located.
2. Handle the pump using a hoist.
3. Install the pump so that the I/O main switch can be accessed by the operator.
80 mm
mini
80 mm
mini
80 mm
mini
80 mm
mini
80 mm
mini
Ventilation
To guarantee the characteristics and performances of the pump within the boundaries of the operating
conditions:
●Do not obstruct the air vents.
●Keep the pump away from fixed walls, at a minimum using the value indicated on the diagram be-
low.
5.2 Connecting to the pumping line
The user and/or product integrator is ultimately responsible for the equipment and must apply the spe-
cific safety instructions, in accordance with local regulations.
WARNING
Risk of crushing and/or cutting in case of contact with moving parts
The pump inlet flange is large enough for body parts (fingers or hands) to the inserted into it, present-
ing a risk of crushing due to contact with moving parts. The inlet and exhaust ports should be sealed
with blanking plates before connection.
►Wait for the pumping line to be connected before removing the blanking plates.
►Wait for the pump to be connected before powering on.
General instructions for installing the pump in the pumping line in accordance with industry
best practices
The inlet and exhaust connections must not put undue strain on the pumping line that could cause leak-
age.
1. Only use accessories on the inlet and exhaust lines with materials and sealing properties that are
compatible with the gases being pumped. Refer to the connection accessories catalog available at
the Pfeiffer-Vacuum website.
2. When assembling the pumping line, include accessories for isolating the pump from the pumping
line and making maintenance easier to carry out (pump inlet and exhaust isolation valves, purge
valves, etc.).
3. The O-rings located under the blanking plates are not compatible with all applications. Product
users or integrators are responsible for installing O-rings that are compatible with their ap-
plications.
Installation
17/54

4. Remove the blanking plates used to seal the inlet and exhaust ports.
5. Keep the blanking plates, screws and washers for reuse when transporting the pump.
6. Ensure that no screws, washers or other objects are dropped into the pump inlet.
7. Fit flexible tubes in the pumping line to reduce the transmission of vibration.
8. Perform a leak test on the entire pumping line after installation.
5.2.1 Connection on the pump inlet side
Make sure that the parts or chambers connected to the inlet of our products can withstand
a negative pressure of 1·10-3 hPa relative to atmospheric pressure.
To achieve the optimum pumping speed, make the pumping line as short and straight as possible
and ensure that its inside diameter is not narrower than the pump inlet flange inside diameter.
The product is not designed to withstand loads on its inlet flange which may compromise stability.
●Mechanically attach the vacuum chamber separately from the pump.
●Use only dry parts and clean, grease-free, dust-free pipelines.
●It may be necessary to install an inlet filter (particle filter or condensable filter).
●If necessary, install an isolation valve on the inlet which closes when the pump stops.
5.2.2 Connection on the pump exhaust side
DANGER
Risk of poisoning in case of contact with toxic substances and by-products generated by the
process
The vacuum pump, pumping line components and operating fluids may potentially be contaminat-
ed with toxic, corrosive, reactive and/or radioactive substances related to the process and harmful to
health.
►Always connect the pump exhaust to an exhaust extraction system.
Ensure that all components in the exhaust line have a maximum pressure rating that ex-
ceeds the highest pressure the pump can generate.
Pump exhaust is equipped with an anti-noise device.
1
1Anti-noise device
In case of connection to an exhaust pipe:
►Remove the anti-noise device on the exhaust port.
CV version
Installation
18/54

Pump exhaust is equipped with an external drainable silencer to collect condensed liquids.
1. Install the silencer in a horizontal position to prevent condensed liquids in the pump from return-
ing.
–Comply with the position indicated on the label.
2. Connect the external silencer exhaust to an exhaust pipe.
3. Install a draining device on the port designed for this purpose (1/8 Gas connection).
5.2.3 Connecting CP version pumps
Connecting the pumping connector of the housing
In installations that recirculate inert gas, fore pumping must be carried out before proceeding with the
treatment of inert gases. A DN 16 ISO-KF connector pumps the housing to remove any gases in this
area. Its only purpose is the initial fore pumping or after maintenance on the installation. It is not used to
recirculate inert gases. This fore pumping must be performed with the pump stopped. This function
must not be carried out when the pump is in operation.
Turbo
ACP (CP version)
Vacuum chamber
Inlet port Exhaust port
CP port
5.2.4 Connecting the purge circuit
The gas purge consists of injecting an inert gas into the pump.
In this manual, the inert gas will be called ‘nitrogen’, as it is the most commonly used gas. For more
information about the type of purge gas, contact your Pfeiffer Vacuum service center.
DANGER
Danger of death by explosion when pumping gases containing pyrophoric/flammable materi-
als
There is a risk of explosion if pyrophoric materials above the LEL are sent to the pump.
►Ensure there is a sufficient flow of nitrogen to lower the concentration below the LEL.
►Provide an interlock to ensure that gas flow towards the pump is stopped if the nitrogen flow is
interrupted.
The effect of nitrogen injection continuity on the process
If an interruption to the nitrogen flow represents a serious risk for the process, it is advisa-
ble to control the nitrogen supply with an external system capable of taking over if the nitro-
gen circuit fails.
G version and CV version
A gas purge circuit protects the low- and high-pressure ball bearings and dilutes trace amounts of corro-
sive gases.
The pump must be connected to a dry and filtered nitrogen supply that has the required characteristics
(see chapter “Nitrogen characteristics”).
1. Connect the neutral gas pipe to the 1/4 BSPT connector provided for this purpose (flexible or rigid
pipe supplied by the customer).
2. Install an isolation valve on the neutral gas injection circuit, as close as possible to the pump. This
enables the pump to recover its initial pumping performances when gas injection is not used.
3. The purge maximum pressure must not exceed 300 hPa (relative).
Installation
19/54

LG version
The air injection line flow rate is ensured by a jet, which is integrated into the pump.
5.3 Check that the installation is leaktight
When the product leaves the factory, product leaktightness under normal operating conditions is guar-
anteed. The operator must maintain this level of leaktightness, especially when pumping dangerous
gases. For more information concerning leak tests, please contact our service center.
1. Perform a leak test on the entire pumping line after installation.
2. Carry out regular checks to ensure that there are no traces of the pumped gases in the surround-
ing environment and that no air is entering the pumping line during operation.
5.4 Electrical connection
WARNING
Risk of electric shock due to non-compliant electrical installations
This product uses mains voltage for its electrical supply. Non-compliant electrical installations or in-
stallations not done to professional standards may endanger the user’s life.
►Only qualified technicians trained in the relevant electrical safety and EMC regulations are au-
thorized to work on the electrical installation.
►This product must not be modified or converted arbitrarily.
WARNING
Danger of electrocution by contact during maintenance or overhaul
There is an electric shock hazard in case of contact with a product powered on and not electrically
isolated.
►Before carrying out any work, set the main switch to O.
►Disconnect the power cable from the mains.
►Secure the installation correctly by tagging and locking (LO/TO) the system to prevent uninten-
tional re-engagement.
NOTICE
Risk of electromagnetic disturbance
Voltages and currents can induce a multitude of electromagnetic fields and interference signals. In-
stallations that do not comply with the EMC regulations can interfere with other equipment and the
environment in general.
►Use shielded cables and connections for the interfaces in interference-prone environments.
The pump is a class A product.In a domestic environment, this product can cause radio in-
terference. In this case, users must take appropriate measures.
Electrical safety
The pump is equipped with an I/O main switch that isolates the product from the power line when it is in
O position.
The pump is equipped with a frequency converter in compliance with EC standards that allows the
pump to run automatically at high and low voltages. The frequency converter is protected against short-
circuits from power line. Once this safety process is activated, power is switched off and the pump is put
into a safe condition.
Procedure for restarting the pump after a power failure
To restart the pump:
1. switch off the main power (main switch at position O),
2. eliminate the cause of the fault, then
3. wait for about 15 seconds,
4. flip the main switch to position I.
Installation
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