Pfeiffer Vacuum ACP 40 SD, ACP 28 G, ACP 28 CV, ACP 40 CV, ACP 40 G Operating Instructions Manual

OPERATING INSTRUCTIONS

EN

ACP 28 - 40

Multi-stage Roots pump, air cooled

Translation of the Original

Disclaimer of liability

These operating instructions describe all models and variants of your product. Note that your
product may not be equipped with all features described in this document. Pfeiffer Vacuum
constantly adapts its products to the latest state of the art without prior notice. Please take
into account that online operating instructions can deviate from the printed operating
instructions supplied with your product.

Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from
the use of the product that contradicts its proper use or is explicitly defined as foreseeable
misuse.

Copyright

This document is the intellectual property of Pfeiffer Vacuum and all contents of this
document are protected by copyright. They may not be copied, altered, reproduced or
published without the prior written permission of Pfeiffer Vacuum.

We reserve the right to make changes to the technical data and information in this document.

2/56

Table of contents

1 About this manual 7

1.1 Validity 7

1.2 Conventions 7

2 Safety 11

2.1 General safety instructions 11

2.2 Intended use 13

2.3 Foreseeable misuse 13

3 Transportation and Storage 14

3.1 Receipt of the product 14

3.2 Handling 14

3.3 Storage 15

Table of contents

1.1.1 Products concerned 7

1.1.2 Applicable documents 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

2.1.1 Safety instructions 11

2.1.2 Precautions 13

4 Product description 16

4.1 Product identification 16

4.1.1 Scope of delivery 16

4.1.2 Differences between pump versions 16

4.2 Human/Machine Interface 17

5 Installation 19

5.1 Installation 19

5.2 Connecting to the pumping line 19

5.2.1 Connection on the pump inlet side 20

5.2.2 Connection on the pump exhaust side 20

5.2.3 Connecting CP version pumps 21

5.2.4 Connecting the purge circuit 21

5.3 Check that the installation is leaktight 22

5.4 Electrical connection 22

5.4.1 Customer electrical installation protection 23

5.4.2 Mains connection 23

5.5 Remote connector wiring 23

5.5.1 Digital input wiring 24

5.5.2 Setting of the rotation speed 24

5.5.3 Digital output wiring 24

5.6 Wiring the RS-485 serial link 25

5.6.1 Connections 25

5.6.2 Setting 26

5.6.3 Command list 27

6 Operation 29

6.1 Preliminary precautions for use 29

6.2 Matrix gas/applications 30

6.3 Different control modes 31

6.3.1 Local mode operation 31

6.3.2 Remote control mode operation 32

6.3.3 Operation in RS-485 link mode 33

6.4 Operation monitoring 33

6.5 Gas ballast operation 34

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Table of contents

6.6 Purge operation 35

6.7 Gas ballast and purge operation on CV version 35

7 Maintenance 36

7.1 Maintenance safety instructions 36

7.2 Maintenance frequency 37

7.3 On-site maintenance 37

7.4 Exchange procedure for replacement products 38

7.4.1 Disconnecting the pump from the installation 39

7.4.2 Preparing the pump for shipping 39

8 Decommissioning 40

8.1 Shutting down for longer periods 40

8.2 Recommissioning 40

8.3 Disposal 40

9 Malfunctions 41

9.1 Trouble at pump start-up 41

9.2 The pump runs incorrectly 41

10 Service solutions from Pfeiffer Vacuum 43

11 Accessories 45

12 Technical data and dimensions 47

12.1 General 47

12.2 Technical characteristics 47

12.2.1Environmental conditions 48

12.2.2Nitrogen characteristics 49

12.2.3Electrical characteristics 49

12.3 Dimensions 49

12.4 Weight distribution and center of gravity 52

12.5 Load on foot with fastening kit 53

ETL Mark 54

Declaration of conformity 55

4/56

List of tables

Tbl. 1: Rotation speed......................................................................................................... 24

Tbl. 2: S2 output wiring procedure: example.......................................................................25

Tbl. 3: Default serial link configuration.................................................................................26

Tbl. 4: LED meaning on a pump equipped with a three-phase frequency converter...........34

Tbl. 5: The various gas ballast models................................................................................34

Tbl. 6: Technical characteristics.......................................................................................... 48

Tbl. 7: Conversion table: Pressure units..............................................................................48

Tbl. 8: Conversion table: Units for gas throughput.............................................................. 48

Tbl. 9: Nitrogen characteristics............................................................................................49

Tbl. 10: Electrical network protection.....................................................................................49

List of tables

5/56

List of figures

List of figures

Fig. 1: Safety label locations..................................................................................................9

Fig. 2: ACP 28 - 40 - CV version with single-phase frequency converter............................17

Fig. 3: ACP 28 - 40 - Versions SD - SH - G - CP - LG with single-phase frequency convert-

Fig. 4: Remote control connector wiring..............................................................................24

Fig. 5: Male 15-pin RS-485 connector.................................................................................26

Fig. 6: Cover plug with strap for operation in local mode.................................................... 31

Fig. 7: Dimensions ACP 28 - 40 versions SD - SH - LG - G................................................50

Fig. 8: Dimensions ACP 28 - 40 versions CV......................................................................50

Fig. 9: Dimensions ACP 28 - 40 versions CP......................................................................51

Fig. 10: Wheel kit dimensions................................................................................................52

Fig. 11: Fastening kit dimensions..........................................................................................52

er.............................................................................................................................. 17

6/56

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 de­scriptions 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 cus­tomer does not modify the product in any way.

1.1.1 Products concerned

This document applies to products with the following part numbers:

Part Number Model Description

V6SAXXXXXX ACP 28 SD Models for standard applications

V8SAXXXXXX ACP 40 SD

V6GAXXXXXX ACP 28 G Models for applications with traces of corrosive gases

V8GAXXXXXX ACP 40 G

V6GVXXXXXX ACP 28 CV Models for pumping condensable vapors

V8GVXXXXXX ACP 40 CV

V6SHXXXXXX ACP 28 SH Models for gas pumping applications with N.E.G. pumps (Non-Evapo-

V8SHXXXXXX ACP 40 SH

V6SLXXXXXX ACP 28 LG Models for light gas pumping applications

V8SLXXXXXX ACP 40 LG

V6SCXXXXXX ACP 28 CP Models for applications with chemically inert gas recirculation or re-

V8SCXXXXXX ACP 40 CP

About this manual

rable Getter)

covery

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.

1.1.2 Applicable documents

Document Reference

Declaration of conformity included with these operating instructions

UL/CSA compliance (ETL mark) included with these operating instructions

1.2 Conventions

1.2.1 Pictographs

Pictographs used in the document indicate useful information.

7/56

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

P0385E4

AC Rating 110-230V 50/60Hz 15-10A

Frequency inverter serial n°

Reference

About this manual

Note

Tip

1.2.2 Target group

This user manual is intended for all persons in charge of transport, installation, commissioning/decom­missioning, 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 ac­tion 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

CPC ground connection

1

2

3 This label indicates that the power supply must be switched off before

4 Product identification label (example).

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.

This label indicates the voltage of the equipment to which the pump is to
be connected.

connecting and/or disconnecting the pump. Any person responsible for in­stallation or operation of the product must first refer to the operating man­ual.

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DRAINABLE SILENCER MUST BE

INSTALLED HORIZONTALLY

SEISMIC TIE DOWN

A 329 962 - 5

1

2

3

4

5

6

7

8

9

11

10

About this manual

5 This label indicates that the pump is compliant with UL/CSA tests.

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 This label warns users that they risk being injured if their hands come into

contact with a hot surface: protective gloves must be worn at all times
when working on the pump.

8 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
breaker in the appropriate manner.

9 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.

10

11

This label indicates the installation position of the accessory (CV version).

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:

Fig. 1: Safety label locations

9/56

About this manual

2 Mains voltage 8 Electric shock hazard

4 Identification plate for the product, weight, model, P/N,

S/N

5 UL/CSA compliant 10 External silencer position (CV version)

6 Heavy object 11 Seismic brackets anchor point

7 Hot surface

9 Moving parts

10/56

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

Safety

Danger of property damage

Notice is used to address practices not related to physical injury.

►

Instructions on avoiding property damage

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 applica­ble, 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.

NOTICE

Notes, tips or examples indicate important information on the product or on this
document.

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 in­stallations not done to professional standards may endanger the user’s life.

►

Only qualified technicians trained in the relevant electrical safety and EMC regulations are au­thorized to work on the electrical installation.

►

This product must not be modified or converted arbitrarily.

11/56

Safety

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 uninten­tional 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 of­ten 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 sys­tem.

►

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

This 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 and adjust the flow according to the application.

►

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 state 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 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, present­ing 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.

12/56

2.1.2 Precautions

Only qualified personnel trained in safety regulations (EMC, electrical safety, chemical pollution) are au­thorized to carry out the installation and maintenance described in this manual. Our service centers can
provide the necessary training.

►
►
►
►

►

Safety

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 installation into a system, the operator is required to check and re­evaluate as necessary the conformity of the overall system in the context of the
relevant european Directives before commissioning that system.

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 con­nected 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.

13/56

Transportation and Storage

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.

►

Keeping 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.

►

Keeping the blanking plates in place on the inlet, exhaust and purge ports while the product is not
connected to the pumping line.

Keeping 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.

14/56

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:

3.3 Storage

Transportation and Storage

–

length of each strap > 605 mm

–

load per strap > 16 kg

3.

With the sling, lift the pump using the hoisting ring.

A wheel kit is available as accessory: fitted over the frame, it facilitates the movement of the pump over
short distances (see chapter “Accessories”, page 45) and (see chapter “Dimensions”, page 49).

Storing a new pump

Pfeiffer Vacuum recommends storing the products in their original transport pack­aging.

1.

Keep the pump wrapped in its protective envelope.

2.

Always leave the inlet, the exhaust blanking plates 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).

●

then for 30 minutes at ultimate pressure (inlet, gas ballast and purge ports closed).

2.

Stop the pump.

3.

Seal the pump inlet, exhaust and purge ports with included accessories.

4.

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 from Pfeiffer Vacuum”, page 43).

Storage after use

1.

Stop the pump according to the pump shut-down procedure.

2.

Disconnect the pump from the installation.

3.

Seal the pump inlet, exhaust and purge ports with included accessories.

4.

Store the pump in a clean, dry, non-polluted area for a maximum of 6 months according to the
storage temperatures.

Extended storage beyond 6 months after use

Run the pump regularly because 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).

●

then for 30 minutes at ultimate pressure (inlet, gas ballast and purge ports closed).

2.

Stop the pump.

3.

Seal the pump inlet, exhaust and purge ports with included accessories.

4.

Repeat this at least every 6 months.

Beyond 2 years, the pump must be revised before commissioning.

Never store a pump that has been used! Return the pump to the service center (see chapter “Service

solutions from Pfeiffer Vacuum”, page 43).

15/56

Product description

4 Product description

4.1 Product identification

To correctly identify the product when communicating with our service center, always have the informa­tion from the product identification label 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 con­densation inside the pump.

G version

The pump is compatible with traces of corrosive gases. A purge gas stream protects low- and high­pressure 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.

16/56

4.2 Human/Machine Interface

1 2 3

5

4

7

8 9

10

6

1 2 3 4 5 644 7 8 9

11

12

Fig. 2: ACP 28 - 40 - CV version with single-phase frequency converter

1 Inert gas purge connection 6 Time counter

2 Pump inlet 7 I/O main switch

3 Gas ballast 8 Mains power supply

4 Hoisting ring 9 Pump exhaust

5 Remote connector and RS-485 connector 10 External silencer (CV version)

Product description

Fig. 3: ACP 28 - 40 - Versions SD - SH - G - CP - LG with single-phase frequency converter

1 Inert gas purge connection (G version) 7 I/O main switch

2 Pump inlet 8 Mains power supply

3 Gas ballast (SD - LG version) 9 Pump exhaust

4 Hoisting ring 11 Air injection (LG version)

17/56

Product description

5 Remote connector and RS-485 connector 12 Housing pumping (CP version) labeled ‘CP PORT’

6 Time counter

18/56

5 Installation

80 mm
mini

80 mm

mini

80 mm
mini

80 mm

mini

80 mm
mini

5.1 Installation

The pump needs to operate in a horizontal position resting on its feet, the pumping axis must be verti­cal, 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.

Installation

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 be­low.

5.2 Connecting to the pumping line

The user and/or product integrator is ultimately responsible for the equipment and must apply the spe­cific safety instructions, in accordance with local regulations.

WARNING

Risk of crushing 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, present­ing 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 leak­age.

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 ap­plications.

19/56

1

Installation

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 contaminat­ed 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 exceeds the highest pressure the pump can generate.

Pump exhaust is equipped with an anti-noise device.

20/56

1 Anti-noise device

In case of connection to an exhaust pipe:

►

Remove the anti-noise device on the exhaust port.

CV version

Pump exhaust is equipped with an external drainable silencer to collect condensed liquids.

Turbo

ACP (CP version)

Vacuum chamber

Inlet port Exhaust port

CP port

1.

Install the silencer in a horizontal position to prevent condensed liquids in the pump from return­ing.

–

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.

Installation

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 materi­als

There is a risk of explosion if pyrophoric materials above the LEL (Lower Explosive Limit) 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
advised to control the nitrogen supply with an external system capable of taking
over if the nitrogen circuit fails.

21/56

Installation

G version and CV version

A gas purge circuit protects the low- and high-pressure ball bearings and dilutes trace amounts of corro­sive 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).

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 guar­anteed. 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 surround­ing 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 in­stallations not done to professional standards may endanger the user’s life.

►

Only qualified technicians trained in the relevant electrical safety and EMC regulations are au­thorized 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 uninten­tional re-engagement.

Risk of electromagnetic disturbance

Voltages and currents can induce a multitude of electromagnetic fields and interference signals. In­stallations 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.

NOTICE

22/56

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.

The pump has thermal sensors that prevent start-up at certain temperatures (see chapter “Preliminary
precautions for use”).

5.4.1 Customer electrical installation protection

The pump is connected to the mains with the mains power cable provided. The earth connection (fre­quency converter, cover, pump) is made via the power cable connected to a compliant electrical instal­lation.

If the mains power cable is provided by the customer, use an EEC cable that is compliant with IEC
60227 and IEC 60245 standards with the following characteristics:

●

heatproof (if it is in contact with hot surfaces),

●

the section of conducting wires is suitable for the voltage (see chapter “Electrical characteristics”),

●

and one of the wires must ensure grounding of the pump.

Installation protection with circuit breaker

The power circuit used to supply the pump must be fitted with a breaker complying with the IEC
60947-2 curve D standard whose short circuit cut-off capacity is at least 10 kA. This protection device
should be in close proximity to the pump (no further than 7 m away) and in line of sight of the product.

The customer must provide a correctly-rated main circuit breaker (see chapter “Electrical characteris­tics”).

Installation

Absence of emergency stop

The pump is not equipped with an emergency stop device (EMS) or a lock-out de­vice.

It is designed to be integrated into equipment fitted with an emergency stop device.

When activated, this emergency stop device must switch off the pump.

Operation in local mode

There is no device to warn that the pump is operating in local mode.

●

Provide a means to warn about local mode operation when the pump is not in­tegrated neither controlled by the equipment.

5.4.2 Mains connection

►

Connect the electrical cable to the mains supply.

5.5 Remote connector wiring

Safety Extra-Low Voltage circuits

The remote control circuits are equipped with dry contact outputs (30 V - 1 A max). Overvoltages and
overcurrents can result in internal electrical damage. Users must observe the following wiring condi­tions:

►

Connect these outputs in accordance with the rules and protection of Safety Extra-Low Voltage
(SELV) circuits.

►

The voltage applied to these contacts should be less than 30 V and the current less than 1 A.

NOTICE

Description

23/56

1567 234

91015 14 13 12 11

8

S1

S3

S4

S5

Installation

Connections to the (Male 15-pin D-Sub) connector are used to:

●

remotely control the start and stop functions,

●

set the rotation speed.

The connector wiring is the customer’s responsibility.

5.5.1 Digital input wiring

There are dry contact inputs. Do not add more connections than those provided: S1, S3, S4 and S5.

Fig. 4: Remote control connector wiring

Contact Function

S1 (7-8) Pump Start/Stop Contact open, S1=0: the pump stops

S3 (9-10)

S4 (11-12)

S5 (13-14)

Contact closed, S1 =1: pump start-up

Rotational speed setting Depending on the contact status (open or closed), the rota-

tion speed changes.

5.5.2 Setting of the rotation speed

Contact Rotation speed

S3 S4 S5 Hz

1 1 0 40 2500

1 0 0 50 3000

0 1 0 65 3900

0 0 0 80* 4800*

* Corresponds to the speed set on the cover plug delivered with the pump.

Tbl. 1: Rotation speed

Influence of rotation speed on pump performances

Pump performances are guaranteed for a nominal speed of 80 Hz. Changing the
rotation speed affects the pumping speed and the ultimate pressure of the pump. At
low speed, it is the customer’s responsibility to find the correct settings according to
the pump and the process.

●

Do not exceed the maximum frequency

●

Do not run the pump continuously at speeds ≤ 60 Hz.

5.5.3 Digital output wiring

min

-1

Contact Function

S2 (5-6) Status of the rotation speed Contact closed: nominal speed reached

24/56

NOTICE

Vcc

5

6

C

I

R

Vout

S2 output wiring precautions

►

Do not connect a relay between contacts 5 and 6 of the S2 output: the relay coil could create an
induced current which may damage the frequency converter.

►

Do not apply a current greater than 35 mA to the output: a greater current would damage the
frequency converter.

S2 output wiring procedure

►

Use the open collector S2 output according to the wiring below:

Vcc: direct voltage delivered by the installation (between 7 and

30 VDC)

R: resistance value (customer provides resistance)

Vout: output voltage

Wiring and supply is the responsibility of the customer.

Tbl. 2: S2 output wiring procedure: example

Installation

The Vcc and R values must be calculated so that the current I is less than 35 mA. When the setpoint
speed is reached, the transistor becomes conductive ‘on-state’ and Vout = 0 V. When the setpoint
speed is not reached, the transistor is ‘blocked’ (‘off-state’) and Vout = Vcc. This assembly does not
pass power, add an amplifier stage to control the power. The S2 output can be used as a relay (dry
contact) using the socket interface accessory (see chapter “Accessories”).

5.6 Wiring the RS-485 serial link

Risk of electromagnetic disturbance

Voltages and currents can induce a multitude of electromagnetic fields and interference signals. In­stallations 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.

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.

5.6.1 Connections

The male D-Sub 15-pin connector is used to control and monitor the pump using a computer. It also
allows the installation of several pumps in a network.

The default serial link setting can be modified from the connected computer: command list in the next
chapter.

NOTICE

Description Set Point

Serial link RS-485

Transmission speed 9600 bauds

Data word length 8 bits

Parity none (no parity)

25/56

1567 234

91015 14 13 12 11

8

V+(A)V-(B)

+5 V-10 mA max.

(RS-485)(RS-485)GND

1

2

3

4

8

9

15

1

2

3

4

8

9

15

1

2

3

4

8

9

15

RS-485

communication

box

P1 P2

Pn*

1,5 kΩ / 1/4 W1,5 kΩ / 1/4 W

Installation

Description Set Point

Stop bit 1

Echo no

Tbl. 3: Default serial link configuration

Fig. 5: Male 15-pin RS-485 connector

Pin Assignment

8 GND

3 RS-485: V-

2 RS-485: V+

1 +5 VDC -10 mA max (only for RS-485)

5.6.2 Setting

It is the user’s responsibility to use shielded links and connections in compliance with EMC and electri­cal safety standards.

RS-485 connection

A computer manages several pumps (P1, P2, Pn, etc.) using the RS-485 serial link via the RS-485 con­nector. This parallel wiring allows communication between the pumps even if a pump is disconnected.

The wiring of the product at the end of line Pn* and the wiring of a single product on the network is spe­cific (see figure below).

When the wiring is done, to allow pump control via serial link, proceed as follows:

1.

Set the main switch to I.

2.

Send an order via the serial link: this order has no priority on remote control mode via dry contacts

The commands

26/56

Header character The default setting is the decimal code 035 of the character #

Address Number given to the pump, 3 characters

Order Command sent on serial link, 3 characters

Parameter The number of characters depends on the command

End character This is the message end character. Default setting: ASCII code 13 <CR>

Installation

Example:

Header character Pump address Order Parameter End character

# ADR ODR XXXX <CR>

The responses

Header character Pump address Order End character

# ADR yyyxxxabc <CR>

Interpretation of the responses

OK If everything is OK, or specific response to the order sent

ERR0 Setting fault

ERR1 Context fault

ERR2 Parameter fault

ERR3 Order fault

Example of dialog

Order #005ACPON<CR>

Response #005,OK<CR>

5.6.3 Command list

Order Parameter Description Functions Min Max

ADR xxx Number given to the

pump in the serial link

IDN none Identification of the

connected product

NSP none Switches from set

point speed to the
nominal speed

RPM nnnn* Set point speed set-

ting

Can be used only when the pump is stopped.

●

adr = pump address before change

●

aaa = new pump address

When the address of the product is unknown, it is possible
to recover the pump address only if this pump is connected
in the link.

For this, send the order:

#???ADR<CR>

??? chain of three ASCII characters.

Example: #adr,ACP 28- VB.05<CR>

Returns the type of pump connected to the computer
(12345), the software version (V) followed by the software
release (zz).

Example: #adrNSP<CR>

●

Nominal speed = 80 Hz

Example:#adrRPMnnnn<CR>

Set point speed can be set in steps of 10 min-1:

●

Minimum speed: 35 Hz for ACP 28 - 40

●

Maximum speed: 80 Hz for ACP 28 - 40

Note:

Before changing the set point speed with the RPM or­der, the SBY order must be sent.

000 255

35 80 Hz

27/56

Installation

Order Parameter Description Functions Min Max

SBY none Switches from stand-

by speed to the de­fault setting

ACP ON or OFF Start/Stop the pump The pump rotation starts with ACPON, pump stops with

*Only rotation speeds recommended in the settings table are allowed (see chapter “Setting of the rotation

speed”, page 24).

Stand-by speed is reset at 35 Hz.

ACPOFF.

Order Pa-

rame­ter

STA none Pump status Example: #adr,xxxxxx yyyyyy,zzzzzz,sssss,iiii,www,ppp,vvv,ttttt<CR>

Description Functions

●

sssss = pump rotation speed (min-1)

●

iiii = motor power (W)

●

www = reserved (by default 000 )

xxxxxx: sta­tus bits

yyyyyy: fault
bits

Bit 5 4 3 2 1 0

0 0 0 0 0

1 - - 1

Bit 5 4 3 2 1 0

0 - 0 0 0 0 0

1 1

power tran­sistor not
powered
(red LED
copy = 1)

1

motor tem­perature
too high

pump run­ning

1

motor cur­rent too
high

●

ppp = frequency converter tem­perature (°C)

●

vvv = reserved (by default 000)

●

tttt = pump operating time (from
first start-up) (h)

0 0

set speed set
point

1

nominal
speed set

- - -

1

stand-by
speed reached

-

28/56

zzzzzz: alert
bits

Bit 5 4 3 2 1 0

0 0 0 0 0 0 OFF

1 - - - - - -

6 Operation

6.1 Preliminary precautions for use

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 of­ten 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 sys­tem.

►

Regularly check that there are no leaks where the pump connects to the exhaust pipework.

WARNING

Risk of electric shock in case of contact with the mains connector at power-off

Certain components use capacitors that are charged up to over 60 VDC and that hold their electrical
charge at power-off: residual voltages due to filter capacitance can cause electric shock, up to and
including mains voltage levels.

►

Wait 5 minutes after power-off before commencing work on the product.

Operation

CAUTION

Auditory risk due to exposure to high noise emissions

When the chamber is in the fore pumping phase and the pressure is high, the pump noise level may
exceed 70 dB (A).

►

Connect the exhaust port to a chimney or to an exhaust pipe.

►

Install an external silencer on the pump exhaust (see chapter "Accessories").

►

Wear hearing protection.

Oil capacity

The pump is delivered with filled oil charge.

●

Do not modify the oil level.

●

Do not drain the pump: this operation is carried out during pump overhaul by
our service centers.

Safety data sheets

You can obtain the safety data sheets for operating fluids from Pfeiffer Vacuum on
request, or from the Pfeiffer Vacuum Download Center.

Thermal safety

The pump is fitted with temperature sensors which prevent operation or start-up
when the temperature of the pump body is < 12°C or > 40°C.

In order for the pump to operate:

●

Operate the pump within the required temperature range.

●

Avoid sudden changes of ambient temperature when the pump is running.

The pump automatically restarts when the thermal safety fault disappears.

Before the pump is switched on each time:

1.

Check that the pump inlet is properly connected to the pumping line.

2.

Check that exhaust pipe line is not clogged and that all the valves in the exhaust system are open.

3.

Connect the pump to the mains supply.

29/56

Operation

4.

Check that the inlet pressure is not higher than atmospheric pressure. If the pressure is too high, it
can damage the product.

5.

Check that the ambient temperature is well within the permitted operating range.

6.

Check the exhaust line during pumping to prevent the risks related to excess overpressure.

6.2 Matrix gas/applications

You are advised to use the appropriate pump version according to the applications and the nature of the
gases pumped and apply the usual precautions to guarantee the reliability and safety of the procedure.

►

Ensure that the gases pumped are compatible with the various materials (see chapter “Environ­mental conditions”).

Type of gas or vapor pumped Recommended

equipment

Neutral or
inert gas

Gas con­taining con­densable
vapor

Reactive
and/or cor­rosive gas
excluding
halogens
(F2, CL2,

Br2, I2)

Air, nitrogen,
CO2, noble gas
or permanently
non-reactive gas

●

Cyclic pump­ing of volume

●

Pumping
large vol­umes

●

Presence of
degassing
material:
plastic, elas­tomer, poly­mer, etc.

●

Drying

Pumping reactive
gas:

●

Oxidizing

●

Base

●

Acid

None

Avoid conden­sation which re­duces the per­formance and
reliability of the
pump

Dilute the corro­sive gas to re­duce its activity.

Connect the
gas ballast to a
neutral gas
source.

Actions/Monitoring to be
done

●

See use of gas ballast
for purging.

●

Before and after pump­ing on the installation, al­low the pump to run for 1
hour at ultimate pressure
with the gas ballast open
(inlet closed).

●

Dilute the gas to lower its
concentration and avoid
any condensation.

●

Use the purge.

●

Avoid excess pressure at
the exhaust.

●

Check that the pump ma­terials and their sealing
are compatible with the
pumped vapors.

Minimum ACP configuration ac­cording to versions

SD G CV

Gas bal­last
closed

Gas bal­last open

- Purge

- -

- Gas bal­last open

Purge

open

open +
gas bal­last open

30/56

1567 234

91015 14 13 12 11

8

Operation

Type of gas or vapor pumped Recommended

equipment

Actions/Monitoring to be
done

Minimum ACP configuration ac­cording to versions

SD G CV

Inflammable
or explosive
gas

Work outside
the flammability
range of the
product (ideal =
25 to 50% of
the LEL

1

and/or

below the

2

MOC)

Connect the
gas ballast to a
neutral gas
source.

●

Dilute the pumped gas
upstream or in the pump
to lower its concentration
below the lower flamma­bility limit via purges
and/or the neutral gas
ballast.

●

Dilute the gas dis­charged by the pump to
lower its concentration to
25% of the LEL via purge
and/or the inert gas bal­last.

●

Avoid any build-up of gas

- Purge
open

in the pumping line.

●

Avoid air or humidity
backstreaming by main­taining a gas speed
> 0.1 m/s in the exhaust
line.

●

Check the sealing of the
installation.

1

Reference to USA NFPA 69-2002, chap. 6.3.1 Combustible concentration threshold; LEL = lower explosive limit

2

MOC Minimum Oxygen Concentration

Purge
open +
gas bal­last open

Feature for CP - LG - SH pump versions

CP - LG - SH pump versions are designed for applications with specific qualities.
Contact our service center.

6.3 Different control modes

This chapter describes the connections and protocols associated with each control mode. 3 control
modes are available:

●

LOCAL

The pump is controlled by a switch: I/O. The pump runs independently of the equipment into
which it has been integrated.

●

REMOTE

The pump is remote controlled by opening or closing different dry contacts. Its rotation speed is
configured on the terminals of the remote control connector (see chapter “Remote mode opera­tion”.

●

SERIAL LINK

The pump is controlled by commands sent via serial link RS-485 (see chapter “Use in RS-485 link
mode”).

6.3.1 Local mode operation

In local mode, the pump can run only if the cover plug is fitted on the remote control connector. This
cover plug is delivered with the pump.

Fig. 6: Cover plug with strap for operation in local mode

31/56

Operation

Starting the pump

An hour counter displays the pump model and running time in hours.

1.

Position the main switch to I position: pump starts automatically.

●

G version: operates the purge.

●

CV version: operates the purge and gas ballast.

Shutting down the pump

1.

Isolate the pump in the pumping line (isolation valve at pump inlet, closed) and let it run for 1
hour with gas ballast or purge open.

2.

Position the main switch to O position, and/or activate the mains circuit breaker: pump stops.

Prolonged stoppage

If the pump is subject to a prolonged stop:

►

Apply the Decommissioning procedure.

Restarting after emergency stop (using the equipment)

The emergency stop is managed by the equipment in which the pump is integrated. To restart the pump
after an emergency stop, you must:

1.

Correct the problem,

2.

Unlock the emergency button on the equipment/tool: the pump restarts automatically.

Restarting following a power failure

►

After a power failure, the pump restarts automatically when the power is restored.

DANGER

Risk of injury when power is restored to the pump

In local mode, permanent contact between terminals 7 and 8 (cover plug strap) triggers an auto-re­start when the mains power supply is restored to the pump.

►

Take all the measures required to prevent risks resulting from this type of operation.

6.3.2 Remote control mode operation

►

Wire and connect the remote control connector located at the rear of the pump

Starting the pump

1.

Position the main switch to I position: the pump is powered.

2.

Send a ‘Start’ pump order via the S1 contact:

●

The pump starts up and runs at the speed set on the contacts of the remote connector.

●

G version: operates the purge.

●

CV version: operates the purge and gas ballast.

Note: when the S1 contact is closed, sending the 'ACPON' or 'ACPOFF' command via the serial link
doesn’t disturb the operation (‘context error’ response on serial link).

Influence of rotation speed on pump performances

Pump performances are guaranteed for a nominal speed of 80 Hz. Changing the
rotation speed affects the pumping speed and the ultimate pressure of the pump. At
low speed, it is the customer’s responsibility to find the correct settings according to
the pump and the process.

●

Do not exceed the maximum frequency

●

Do not run the pump continuously at speeds ≤ 60 Hz.

32/56

Shutting down the pump

1.

Isolate the pump in the pumping line (isolation valve at pump inlet, closed) and let it run for 1
hour with gas ballast or purge open.

2.

Send a ‘Stop’ pump order via S1 contact: the pump stops.

Powering off

►

Set the switch to the O position.

Prolonged stoppage

If the pump is subject to a prolonged stop:

►

Apply the Decommissioning procedure.

Restarting after emergency stop (using the equipment)

The emergency stop is managed by the equipment in which the pump is integrated. To restart the pump
after an emergency stop, you must:

1.

Correct the problem,

2.

Unlock the emergency button on the equipment/tool: the pump restarts automatically.

Restarting after power failure

►

After a power failure, the pump restarts automatically when the power is restored.

DANGER

Risk of injury when power is restored to the pump

In remote control mode, contact S1 (terminals 7 and 8 on the remote control connector) switches the
pump on/off. The S1 contact wiring is the customer’s responsibility.

►

Provide adequate wiring that can authorize or prevent auto-restart.

►

Take all the measures required to prevent risks resulting from this type of operation.

6.3.3 Operation in RS-485 link mode

►

Wire and connect the serial link pins to the remote control connector.

Starting the pump

1.

Position the main switch to I position: the pump is powered.

2.

Send an ‘ACPON’ order via the serial link:

●

The pump starts and runs at the speed set on the serial link parameters.

●

G version: operates the purge.

●

CV version: operates the purge and gas ballast.

Note: when ACPON is activated, if the S1 dry contact is closed then opened on the remote control con­nector, then the pump stops.

Operation

Influence of rotation speed on pump performances

Pump performances are guaranteed for a nominal speed of 80 Hz. Changing the
rotation speed affects the pumping speed and the ultimate pressure of the pump. At
low speed, it is the customer’s responsibility to find the correct settings according to
the pump and the process.

●

Do not exceed the maximum frequency

●

Do not run the pump continuously at speeds ≤ 60 Hz.

Shutting down the pump

1.

Isolate the pump in the pumping line (isolation valve at pump inlet, closed) and let it run for 1 hour
with gas ballast or purge open.

2.

Send an ‘ACPOFF’ order via the serial link: the pump stops.

Restarting after emergency stop (using the equipment)

The emergency stop is managed by the equipment in which the pump is integrated. To restart the pump
after an emergency stop, you must:

1.

Correct the problem.

2.

Unlock the equipment’s emergency stop button.

3.

Send an ‘ACPON’ order via the serial link.

Powering off

►

Set the switch to the O position.

Prolonged stoppage

►

Apply the Decommissioning procedure.

6.4 Operation monitoring

The pumps equipped with a three-phase frequency converter have two LEDs at the rear that indicate
the pump’s operating status.

33/56

Operation

LED LED status Display Meaning

Green Off The pump is powered off.

On, constant
light

Red Off No error

On, constant
light

On, flashing The thermal safety indicates that the pump temperature is too

Tbl. 4: LED meaning on a pump equipped with a three-phase frequency converter

6.5 Gas ballast operation

Principle

The user must take the appropriate measures when pumping condensable vapors or when use of the
gas ballast is required. When condensable vapors or moist air are being pumped, gas is compressed
beyond its saturated vapor pressure in the compression phase. It can condense, impairing pump per­formance. The gas ballast can be used to inject a certain quantity of air (neutral or dry gas) into the
pump during the ‘compression’ phase so that the partial pressure of the pumped gas is less than its sa­turated vapor pressure at the pump’s operating temperature. Condensation is therefore impossible if
this limit is not reached. The saturated vapor pressure of a body is higher when the system is hot than
when it is cold; therefore, the pump must reach operating temperature before pumping condensable va­pors. Using the gas ballast increases the ultimate pressure of the pump as well as the tempera-

ture.

Commissioning

To better pump with condensable vapors or moist air, the pump must be hot. Proceed as follows:

●

Isolate the pump from the system (inlet isolation valve closed) and allow it to operate for 1 hour
with the gas ballast open.

●

Then, open the isolation valve: the pump operates under the best conditions by reducing the risk
of condensation inside the pump.

Recommendations

To ensure that condensable gases are correctly removed by the exhaust, we do not recommend con­necting an ES25S.

The gas ballast function can be automated: this accessory is available upon request (see chapter “Ac­cessories”). Likewise, the gas ballast can be supplied with filtered dry air. Contact our service center.

When there is a large amount of condensable vapor, the gas ballast is not effective enough. In this
case, using a CV version pump is recommended. Also, refer to the “Matrix gas/applications” chapter.

The pump is powered on.

The pump has reached the selected speed.

During pump start-up, the LED is On when the selected
speed is not reached.

Presence of an error which prevents the pump from running.

low, or too high (imminent shutdown or starting impossible).

34/56

Gas ballast with permanent fil­ter

Tbl. 5: The various gas ballast models

Gas ballast closed with a plug ON/OFF manual gas ballast

6.6 Purge operation

Principle

A gas purge circuit protects the low- and high-pressure ball bearings and dilutes trace amounts of corro­sive gases.

Commissioning

To operate the purge, there must be a neutral gas supply with the required characteristics (see chapter
“Nitrogen characteristics”).

When the neutral gas supply is connected to a purge connection:

●

Start the purge according to the recommended flow rate values.

Recommendations

To ensure the appropriate removal of corrosive gases by the exhaust, we do not recommend connect­ing an ES25S.

Also refer to the “Matrix gas/applications” chapter.

6.7 Gas ballast and purge operation on CV version

Principle

The combined use of the gas ballast and the purge allows large amounts of condensable vapors to be
removed.

Commissioning

To better pump with condensable vapors or moist air, it is necessary to operate with a hot pump and to
use a nitrogen supply with the required characteristics (see chapter “Nitrogen characteristics”). Proceed
as follows:

1.

Isolate the pump from the system (inlet isolation valve closed) and allow it to operate for 1 hour
with the gas ballast open.

2.

Then, open the isolation valve: the pump operates under the best conditions by reducing the risk
of condensation inside the pump.

3.

Start the purge according to the recommended flow rate values.

4.

Check the level of condensable products in the external silencer and drain it when necessary.

Recommendations

The gas ballast can be automated: this accessory is available upon request (see chapter “Accesso-

ries”, page 45). Likewise, the gas ballast can be supplied with filtered dry air or nitrogen. Contact your

service center.

Also refer to the “Matrix gas/applications” chapter.

Operation

35/56

Maintenance

7 Maintenance

7.1 Maintenance safety instructions

DANGER

Risk to health posed by residual traces of process gases inside the pump

Process gases are toxic and hazardous to health. They can cause poisoning and be fatal. Before dis­connecting the pump, any remaining traces of process gases must be eliminated.

►

The equipment (pumping installation) must be purged with a stream of nitrogen for 30 mi­nutes at the same pressure and flow as that used for the process itself.

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 will potentially be contaminated
with toxic, corrosive, reactive and/or radioactive materials related to the process. Any contact with the
contaminated parts or by-products generated by the process may be injurious to health and could
cause poisoning.

►

Appropriate protective equipment must be worn when disconnecting the pump for maintenance,
filling it with operating fluid, or draining it.

►

Ventilate the area thoroughly or carry out the maintenance under an extraction hood.

►

Do not eliminate the by-products/residue via as common waste; have them destroyed by a quali­fied company where necessary.

►

Close off all the ports with airtight blanking plates (the product comes with blanking plates
that are also available for sale as accessories).

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 uninten­tional re-engagement.

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

Poisoning risk in case of process gas leakage

When connecting/disconnecting components to/from the pumping line (pump, pipework, valves, etc.)
for maintenance, the leaktightness of the installation is broken, potentially causing hazardous process
gas leakage.

►

Always protect the inlet and exhaust surfaces during dismantling.

►

Perform a leak test on the pumping line after reassembly.

36/56

General maintenance recommendations

●

Ensure that the maintenance technician is trained in the safety regulations that cover the pumped
gases.

●

IN

2

Disconnect the power cable from all sources of power before working on the product.

●

Wait 5 minutes after powering off before working on the electrical components.

●

Circuits pressurized with nitrogen are potentially hazardous; always lock out these circuits using
the LO/TO Lock Out/Tag Out procedure before working on the product.

●

Route and secure cables, hoses and pipework to guard against falls.

●

Collect the residues from the processes and call in a competent organization to dispose of them.

●

Always protect the inlet and exhaust flange surfaces.

7.2 Maintenance frequency

Operation Frequency ACP 28 - 40

Pump overhaul by the Pfeiffer Vacuum serv­ice center

External silencer draining (see chapter “On­site maintenance”)

Maintenance frequencies are typical values for non-corrosive applications. For applications using G and
CV pump versions, these values can be reduced. Contact our service center (see chapter “Service solu-

tions from Pfeiffer Vacuum”, page 43).

No maintenance is generally required before product overhaul in a service center.

Maintenance

22,000 hours or 4 years All versions

according to the external silencer
saturation

CV version only

How to contact us

Product overhauls must be carried out by personnel with manufacturer training.
Contact our nearest service center at the following e-mail address: Pfeiffer Vacuum

Service Support.

Life-time

Under normal operating conditions (at ambient temperature, low humidity and neutral pumped gas), in a
non-polluted environment, a new pump which is regularly maintained according to the instructions in
this manual (subject to the components becoming obsolete) has a lifetime greater than 10 years.

7.3 On-site maintenance

The pump does not require any maintenance on the customer’s premises other than the day-to-day
servicing described in this manual. Any other maintenance operation must be carried out by our service
center (see chapter “Service solutions from Pfeiffer Vacuum”, page 43).

►

Clean the outer surfaces of the product using a clean, lint-free cloth and a product that will not
damage the screen-printed surfaces and adhesive labels.

►

Remove dust from the air ventilation grids with a cloth. Do not use a compressed air blower.

Cleaning the inlet filter

The ACP 28 and ACP 40 models are fitted with a filter in the inlet flange. Check the cleanliness of this
filter regularly.

1.

Disconnect the pump inlet from the pumping line and remove the conical filter.

2.

Wash the filter with industrial solvent.

3.

Dry it before refitting.

37/56

1

11

Maintenance

2 Conical filter

Draining the external silencer (CV version)

The maintenance frequency depends on the amount of condensable vapors pumped in the application
in which the pump is installed.

Users are advised:

●

either to regularly check the saturation of the silencer and drain it when necessary.

●

or to connect a permanent drain system instead of the drain plug on the external silencer.

1 Drain plug

Replacing the air filter (LG version)

The LG version models have a permanent air filter.

1.

Check the cleanliness of this filter regularly.

2.

Unscrew the filter and replace it with a new one.

11 Air injection (LG version)

7.4 Exchange procedure for replacement products

To proceed with a standard exchange, key steps must be followed in sequential order:

1.

Disconnecting the pump from the installation.

2.

Draining the external silencer (CV version).

3.

Preparing the pump for shipping.

4.

Complete the declaration of contamination.

5.

Handling the new pump.

6.

Installing the new pump.

Familiarize yourself with the service request procedure and fill in the declaration of contamination when
returning products to our service centers (see chapter “Service solutions from Pfeiffer Vac-

uum”, page 43).

38/56

7.4.1 Disconnecting the pump from the installation

Reminder of the risks and safety measures

●

Follow the maintenance safety instructions.

●

Apply the specific safety instructions in accordance with local laws; this infor­mation is available from the customer’s health and safety department.

Procedure

1.

Power off the pump by setting the switch to position O.

2.

Switch off your main circuit breaker.

3.

Disconnect the power cable at the electrical connector.

4.

Disconnect the nitrogen supply.

5.

Disconnect the pump from the pumping line and blank off the inlet port with the airtight connection
accessories.

6.

Disconnect the pump from the exhaust and blank off the exhaust port with the airtight connection
accessories.

7.

Remove the pump from the installation.

7.4.2 Preparing the pump for shipping

After use in clean applications

●

Install the connecting accessories provided with the pump on delivery. Contact the service center
to order accessories if necessary.

●

Connect the cover plug (delivered with the pump) to the remote connector.

After use with traces of corrosive gases

●

Respect safety instructions before working on the product.

●

Install the connecting accessories to make the pump airtight.

●

Connect the cover plug (delivered with the pump) to the remote connector.

Product transport and shipping

For product transport and shipping, pack it in the original packaging and follow the instructions from the
Service procedure (see chapter “Service solutions from Pfeiffer Vacuum”, page 43).

Maintenance

39/56

Decommissioning

8 Decommissioning

8.1 Shutting down for longer periods

Procedure for a prolonged stop on a pump (> 1 year)

1.

Stop the pump according to pump shut-down procedure.

2.

Drain the external silencer (CV version).

3.

Disconnect the pump from the installation.

4.

Store the pump.

8.2 Recommissioning

To restart the pump after a prolonged stop, refer to the installation instructions (see chapter “Installa-

tion ”, page 19).

8.3 Disposal

In accordance with Directive 2012/19/EC on the treatment of waste electrical and electronic equipment,
and Directive 2011/65/EC on the restriction of hazardous substances, end-of-life products can be re­turned to the manufacturer for decontamination and recovery.

The manufacturer shall only be required to take back equipment that is complete and unmodified, using
Pfeiffer Vacuum SAS original spare parts, sold by Pfeiffer Vacuum and including all assemblies and
sub-assemblies.

This obligation does not cover the shipping cost to a reclamation facility or services provided, for which
the customer will be invoiced.

Familiarize yourself with the service request procedure and fill in the declaration of contamination when
returning products to our service centers (see chapter “Service solutions from Pfeiffer Vac-

uum”, page 43).

Environmental protection

The product and its components must be disposed of in accordance with the
applicable regulations relating to environmental protection and human
health, with a view to reducing natural resource wastage and preventing pollution.

Our products contain different materials which must be recycled (see chapter “Environmental condi-

tions”, page 48). Take particular precautions for:

●

fluoroelastomers which may break down if they are exposed to high temperatures,

●

potentially contaminated components that have been in contact with products resulting from the
processes,

40/56

9 Malfunctions

9.1 Trouble at pump start-up

Read the safety instructions for maintenance.

Symptom Cause Remedy

The pump does not start and the
fan does not run

The pump does not start but the
fan runs

Main switch

The pump supply voltage is
not compatible with the equi­pment’s power configuration

Main cable not correctly con­nected or damaged

Other problem

Temperature

Remote control connector
wiring

Other problem

●

●

●

●

●

●

●

●

Malfunctions

Check that the main switch is at the I position.

Check the equipment’s voltage corresponds to re­quired power voltage.

Check / replace the main power cable.

Contact our service center.

Check the pump ventilation conditions.
Wait for 1 hour at ambient temperature between
12°C and 40°C. The pump must start automatical­ly

Check that the cover plug is properly connected to
the connector at the rear of the pump.

Pump blocked: Contact our service center.

9.2 The pump runs incorrectly

Read the safety instructions for maintenance.

Symptom Cause Remedy

Pump runs inter­mittently

Pump noisy Gas ballast

Temperature

The pump supply voltage is
not compatible with the
equipment’s power configu­ration

Other problem

The pressure does not go
down - leak in the installa­tion

Vibration

Other problem

●

●

●

●

●

●

●

Check the pump ventilation conditions.

Check the voltage corresponds to required power voltage.

Contact our service center.

Check if the gas ballast is open. Warning: if the application re­quires it, the gas ballast must remain open despite the noise!

Check the pressure at the pump inlet.

Check that the pump is properly attached to the frame.

Contact our service center.

41/56

Malfunctions

Symptom Cause Remedy

Bad vacuum Gas ballast

Purge (G and CV versions)

Rotation speed

Pumping of condensable va­pors

Defective measurement
gauge

Leak in the installation

Other problem

●

●

●

●

●

●

●

●

●

Check if the gas ballast is open. Warning: if the application re­quires it, the gas ballast must remain open at the expense of the
limit pressure!

If the purge is used: check the purge connection between pump
and installation.
If the purge is not used: check the tightness of the plug installed
on the purge port.

If remote controlled via RS-485: check the setpoint speed.
If remote controlled via dry contacts: check the contact setting.

If the application allows it, let the pump run for 30 minutes to 1
hour with the gas ballast open; this removes the condensable va­pors.

Perform a leak test on the pumping line.

Check the accuracy of the measurement means

Contact our service center.

42/56

ANFORDERUNG SERVICE

ERKLÄRUNG KONTAMINIERUNG

Service solutions from Pfeiffer Vacuum

10 Service solutions from Pfeiffer Vacuum

We offer first class service

Long vacuum component service life, coupled with low downtimes, are clear expectations that you have
of us. We satisfy your needs with capable products and outstanding service.

We are consistently striving to perfect our core competence, service for vacuum components. And our
service is far from over once you’ve purchased a product from Pfeiffer Vacuum. It often enough really
just begins then. In proven Pfeiffer Vacuum quality, of course.

Our professional sales engineers and service technicians stand ready to provide hands-on support to
you worldwide. Pfeiffer Vacuum offers a complete portfolio of service offerings, ranging from genuine

spare parts right through to service agreements.

Take advantage of Pfeiffer Vacuum Service

Whether for preventative on-site service from our field service, fast replacement with as-new replace­ment products or repair in a Service Center close to you; you have various options for upholding your
equipment availability. Detailed information and addresses can be found on our website in the Pfeiff-

er Vacuum Service section.

Advice on the optimum solution is available from your Pfeiffer Vacuum contact partner.

For quick and smooth handling of the service process, we recommend the following steps:

1. Download the current form templates.

─ Declaration of Service Request
─ Service Request
─ Declaration of Contamination

a. Dismantle all accessories and keep them (all external mounted parts as valve, inlet

screen, etc.).

b. Drain the operating fluid/lubricant as necessary.

c. Drain the cooling medium as necessary.

2. Fill out the service request and the declaration of contamination.

3. Send the forms via email, fax or post to your local Service Center.

4. You will receive a response from Pfeiffer Vacuum.

Sending of contaminated products

No units will be accepted if they are contaminated with micro-biological, explosive or radioactive sub­stances. If products are contaminated or if the declaration of contamination is missing, Pfeiffer Vacuum
will contact the customer before starting maintenance. In addition, depending on the product and the
level of contamination additional decontamination costs may be required.

43/56

ERKLÄRUNG KONTAMINIERUNG

Service solutions from Pfeiffer Vacuum

5. Prepare the product for transport in accordance with the details in the dec­laration of contamination.

a) Neutralize the product with nitrogen or dry air.

b) Close all openings with airtight blank flanges.

c) Seal the product in appropriate protective film.

d) Only pack the product in suitable, stable transport containers.

e) Observe the applicable transport conditions.

6 Affix the declaration of contamination to the outside of the packaging.

7 Then send your product to your local Service Center.

8 You will receive a confirmation message/a quotation from Pfeiffer Vacuum.

For all service orders, our General Terms and Conditions of Sales and Supply and General Terms and

Conditions of Repair and Maintenance apply to vacuum equipment and components.

44/56

11 Accessories

Refer to the accessory operating instructions to install the accessory.

Accessory Description Model

Inlet filter Stops particles and dust

Exhaust si­lencer

Noise re­duction cov­er

Sound en­closure kit

Frequency
converter
interface
socket

Pump fas­tening kit

Wheel kit Facilitates handling and

Automatic
gas ballast

with a diameter greater
than 25 microns.

Reduces the noise level
at the exhaust when the
pump operates at high
pressures on clean ap­plications. Noise reduc­tion (-12 dBA) at atmos­pheric pressure.

Noise reduction (-5 dBA)
at a maximum ambient
temperature of 35°C.

Noise reduction (-10
dBA) at a maximum am­bient temperature of
32 °C.

Retrieves the signal that
indicates the rotation
speed reached and
manages a power sup­ply up to 24 VDC - 1 A.

Fastens the pump to the
equipment with plates
(M6 screws for frame as­sembly not supplied).

positioning in the equip­ment using the 4 wheels.

Ensures tightness when
the pump stops or it can
be used to remotely con­trol cyclical air inlets on
the pump.

Accessories

Pump versions

P/N SD CV CP LG SH G

Dimension

IPF 25

DN 25 ISO-KF

IPF 40

DN 40 ISO-KF

ES25S

DN 25 ISO-KF

NRC 28 - 40 112637 X / / X X X

SEK 28 - 40 114379 X / / X X X

24VDC

100 V 50/60
Hz

110 V 60 Hz

200 V 50/60
Hz

230 V 50/60
Hz

111649 X X X X X X

111647 X X X X X X

109873 X X X X X X

112851 X X X X X /

112846 X X X X X X

111138S X X X X X X

114816

114814

114813

114815

114812

X

X

/

X

X

X

X

/

X

X

X

X

/

X

X

X

X

/

X

X

X

X

/

X

X

X

X

X

X

X

45/56

Accessories

Pump versions

Accessory Description Model

Dimension

Isolation
valve

Permanent
air filter for
gas ballast

For blanking plates, claw clamps and quick connect clamps, please refer to the connection accesso­ries catalog on the Pfeiffer-Vacuum site.

For SH versions, select the connecting accessories with nitrile seals.

Returns the pump to at­mospheric pressure by
isolating the pumping
line; it is installed up­stream of the pump.

ISV 25

100 V 50/60
Hz

110 V 50/60
Hz

200 V 50/60
Hz

220 V 50/60
Hz

240 V 50/60
Hz

24 VDC

ISV 40

100 V 50/60
Hz

110 V 50/60
Hz

200 V 50/60
Hz

220 V 50/60
Hz

240 V 50/60Hz

24 VDC

P/N SD CV CP LG SH G

115900

115901

115897

115898

115899

115902

118811

118812

118813

118814

118815

118816

075989 / / / X / /

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

X

46/56

12 Technical data and dimensions

12.1 General

Basic principles for the Technical Data of Pfeiffer Vacuum dry compact multi-stage Roots pumps:

●

Recommendations of PNEUROP committee PN5

●

ISO 21360; 2007: “Vacuum technology - Standard methods for measuring vacuum-pump perform­ance - General description”

●

Sound pressure level at ultimate pressure according to EN ISO 2151

12.2 Technical characteristics

Characteristics Units ACP

28 40

SH-CP-SD G-LG CV SH-CP-SD G-LG CV

Inlet flange (ISO-KF) DN 25 DN 40

Exhaust flange (ISO-KF) DN 25 DN 25

Pumping speed max.

Typical ultimate pressure (without

m3/h

hPa

purge or gas ballast)

Typical ultimate pressure (with

hPa

gas ballast open)

Typical ultimate pressure (with

(3)

purge)

Typical ultimate pressure (with

(3)

purge

and gas ballast open)

Typical ultimate pressure (with

(3)

purge

and gas ballast open)

Maximum ultimate pressure (with-

hPa -

hPa -

hPa - -

hPa

out purge or gas ballast)

Maximum ultimate pressure (with

hPa

gas ballast open)

Maximum ultimate pressure (with

(3)

purge)

Maximum ultimate pressure (with

(3)

purge

and gas ballast open)

Max. pumping capacity of pure

hPa -

hPa - -

g/h 120 - 700 120 - 700

water vapor at 20°C (gas ballast

(2)

open)

Continuous inlet pressure hPa 1013

Maximum exhaust pressure hPa 1200

N2 Purge flow

(3)

Gas ballast flow at atmospheric

slm - 3.7 40 - 3.7 40

m3/h

pressure

Sound level (gas ballast and

dB(A) < 70 < 70 < 70 < 70 < 70 < 70

purge closed)

Helium leak rate

(4) (5)

hPa l/s

27 37

- 2

3·10

1·10

4·10

2·10

- 1

- 2

- 1

-

1·10

8·10

-

2·10

-1

-2

- 1

- 1

2·10

-1

1·10

- -

-1

2·10

- 1

3·10

- 1

2·10

-1

3·10

1·10

-

- -

2·10

-

- -

1.2 - 2.4 1.2 - 2.4

-7

< 5·10

CP only < 5·10

-8

< 5·10

-7

< 5·10-7< 5·10

CP only < 5·10

Technical data and dimensions

- 1

- 1

-7

-

-1

1·10

-2

8·10

-

- 1

2·10

< 5·10-7< 5·10

-8

2·10

1·10

-

2·10

3·10

2·10

3·10

- 1

-1

-1

- 1

-1

-1

-7

47/56

Technical data and dimensions

Characteristics Units ACP

28 40

SH-CP-SD G-LG CV SH-CP-SD G-LG CV

Power supply

(1)

(according to ordering guide)

Power consumption at ultimate
pressure

Power consumption at atmos­pheric pressure

Dimensions (see chapter “Dimensions”, page 49)

Weight kg 30 32

(1) In accordance with EC regulations, the pumps can withstand a voltage variation of ±10%.

(2) at ambient temperature: 20°C.

(3) Inert gas flushing 300 hPa relative pressure.

(4) Test by Helium spray.

(5) Overall leak test

Tbl. 6: Technical characteristics

V 110-230 V- 1-phase or 200-440 V- 3-phase

W 700

W 1050 1050 1050 1050 1050 1050

mbar bar Pa hPa kPa Torr | mm Hg

mbar 1

bar 1000 1

Pa 0.01

hPa 1

1 · 10

1 · 10

1 · 10

-3

-5

-3

100 1 0.1 0.75

5

1 · 10

1 0.01

1000 100 750

-3

1 · 10

7.5 · 10

100 1 0.1 0.75

kPa 10 0.01 1000 10 1 7.5

Torr | mm Hg 1.33

1.33 · 10

-3

1 Pa = 1 N/m

133.32 1.33 0.133 1

2

Tbl. 7: Conversion table: Pressure units

mbar l/s

Pa m3/s

sccm Torr l/s

atm cm3/s

mbar l/s 1 0.1 59.2 0.75 0.987

Pa m3/s

sccm

10 1 592 7.5 9.87

1.69 · 10

-2

1.69 · 10

-3

1

1.27 · 10

-2

1.67 · 10

Torr l/s 1.33 0.133 78.9 1 1.32

atm cm3/s

1.01 0.101 59.8 0.76 1

Tbl. 8: Conversion table: Units for gas throughput

-3

-2

12.2.1 Environmental conditions

Use indoor use

Installation altitude up to 2000m

Protection rating IP20

Ambient operating temperature 12 to 40°C

Storage temperature -10 to +60°C

48/56

Technical data and dimensions

Maximum relative humidity 80% max. with T ≤ 31°C, at 50% max. with T ≤ 40°C

Transient overvoltage protection Category II

Pollution degree 2

The materials

Our products contain different materials which must be recycled:

Description Versions SD - SH - CP Versions G - CV - LG

Jet - Brass

Purge line - Stainless steel

Valves FPM

O-rings, lip seals FPM / NBR / PTFE

Shaft, spring, inlet filter Stainless steel

Stators, lobes Aluminum, aluminum alloy + Al2O3 coating

Screws, worked pins, deflectors Stainless steel

Ball bearings Steel, PFPE grease

Inlet and exhaust flanges Aluminum

12.2.2 Nitrogen characteristics

H2O concentration < 10 ppm v

O2 concentration < 5 ppm v

Dust < 1 µm

Oil < 0.1 ppm

Relative pressure

2 · 103 to 6 · 103 hPa

Tbl. 9: Nitrogen characteristics

Connector types

Nitrogen inlet 1/8" NPT male connector Stainless steel

12.2.3 Electrical characteristics

Main switch short circuit cut-off capacity 10 kA

GFI (or RCD) type B, differential circuit breaker compatible with TT electrical networks

1)

for TN and IT networks, use appropriate protection measures

Tbl. 10: Electrical network protection

30 mA

1)

Mains power supply Single-Phase Three-Phase

LV (100-115V) HV (200-230V) LV (200-240V) HV (240-440V)

Main circuit breaker rating (minimum values) 12 A 6 A 5 A 3 A

Conductor cross-section sizes

2.5 mm

2

1.5 mm

2

1.5 mm

2

12.3 Dimensions

Dimensions in mm

1 mm

2

49/56

Exh.

IN

D

AC

M

B

L

R

Q

E

F

A

I

J

S

P

H

T

AB

AA

G

AH

U

N

C

K

Exh.

IN

Exh.

G

I

H

D

AD

AI

AH

U

AA

AB

AC

K

C

AG

N

B

S

P

L

M

T

R

Q

AE

J

E

F

A

AF

Technical data and dimensions

Fig. 7: Dimensions ACP 28 - 40 versions SD - SH - LG - G

ACP 28-40 A B D C E

(1)

G K J I H L M N

F

Single-Phase 322 627 20 193 250 272 228 150 308 278 96 450 76 22 66 12

Three-Phase 314 612 31 187 250 272 235 150 302 272 90 450 70 19 60 12

(1)

F = 306.7 for LG version

(2)

P = 1/4 BSPP purge connection for G version

ACP 28-40 R S T U AA AB AC AH

Single-Phase 43 93 25 105 80 33 60 127

Three-Phase 45 88 28 105 80 34 60 127

(2)

Q

P

50/56

Fig. 8: Dimensions ACP 28 - 40 versions CV

K

C

N

Exh.

IN

G

E

F

A

U

AH

AA

AC

AB

P

J

I

H

(Exh.)

S

(IN)

T

M

L

B

D

R

AI

AJ

Q

Technical data and dimensions

ACP 28 CV/ACP 40 CV A B D C E F G H I J K L M N

Single-Phase 322 627 20 193 250 272 228 278 287 308 150 450 76 22

Three-Phase 314 612 31 187 250 272 235 272 281 302 150 450 70 18.5

ACP 28 CV/ACP 40 CV P Q R S T U AA AB AC AD AE AF AG AH AI

Single-Phase 66 12 43 94 25 105 80 - 60 192 485 43 308 224 118

Three-Phase 60 12 45 88 28 105 80 34 60 192 479 43 305 224 118

Fig. 9: Dimensions ACP 28 - 40 versions CP

ACP 28 CP/ACP 40 CP A B D C E F G H I J K L M N

Single-Phase 322 627 20 193 252 278 228 96 287 308 150 450 76 22

Three-Phase 314 612 31 187 252 278 235 96 281 302 150 450 70 19

ACP 28 CP/ACP 40 CP P Q R S T U AA AB AC AH AI AJ

Single-Phase 66 12 43 94 25 105 80 37 60 127 361 358

Three-Phase 60 12 45 88 28 105 80 37 60 127 361 358

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100

150

215

BA

72 270

254

240

BA

X2

Y2

X1

Y1

Z

F1 F3 F3

F4

Technical data and dimensions

Fig. 10: Wheel kit dimensions

Fig. 11: Fastening kit dimensions

BA = 471 mm

12.4 Weight distribution and center of gravity

Center of gravity

Model Center of gravity (mm) Weight per foot (DaN)

ACP 28/ACP 40 Single-phase/Three-phase 69.5 80.5 225 225 130 8.6 7.4 8.6 7.4

ACP 28 G/ACP 40 G Single-phase/Three-phase 69.5 80.5 225 225 130 8.6 7.4 8.6 7.4

ACP 28 CP/ACP 40 CP Single-phase/Three-phase 69.5 80.5 225 225 130 8.6 7.4 8.6 7.4

ACP 28 SH/ACP 40 SH Single-phase/Three-phase 69.5 80.5 225 225 130 8.6 7.4 8.6 7.4

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X1 X2 Y1 Y2 Z F1 F2 F3 F4

F2

F1

F4

F3

8

7

6

Fa

Fr

Technical data and dimensions

Model Center of gravity (mm) Weight per foot (DaN)

X1 X2 Y1 Y2 Z F1 F2 F3 F4

ACP 28 LG/ACP 40 LG Single-phase/Three-phase 69.5 80.5 225 225 130 8.6 7.4 8.6 7.4

ACP 28 CV/ACP 40 CV Single-phase 69.5 80.5 214 236 130 8.2 7.4 9.0 7.8

ACP 28 CV/ACP 40 CV Three-phase 70.5 79.5 221 229 136 8.3 7.4 8.6 7.7

12.5 Load on foot with fastening kit

We strongly recommended you secure the pump on the equipment with 4 screws (supply of these
screws is the customer’s responsibility, at least 2 screws per fixation plate). The screw material must
comply with foot load specifications, given in the table below.

6 Pump frame 7 M 6 X 20 screw, qty 4, grade

12-9

8 Fastening plate, thickness: 6 mm (delivered in the fastening

kit)

Model Load by foot (N)

F 1 F 2 F 3 F 4

ACP 28/ACP 40

ACP 28 G/ACP 40 G

ACP 28 CV/ACP 40 CV

ACP 28 CP/ACP 40 CP

ACP 28 SH/ACP 40 SH

ACP 28 LG/ACP 40 LG

Single-phase / Three-phase

Traction (Fa) 15 184 27 167

Shearing (Fr) 284 512 291 436

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Declaration of conformity

We hereby declare that the product mentioned below complies with all the applicable provi­sions of the following EU directives:

●

Machinery 2006/42/EC (Annex II, no. 1 A)

●

Electromagnetic compatibility 2014/30/EU

●

Restriction of the use of certain hazardous substances 2011/65/EU

The person responsible for drawing up the technical file is Mr. Frédéric Rouveyre, Pfeiffer
Vacuum SAS, 98, avenue de Brogny B.P.2069, 74009 Annecy cedex, France.

Multi-stage Roots Pump, air cooled

ACP 28 - ACP 28 G - ACP 28 CV - ACP 28 SH - ACP 28 LG - ACP 28 CP

ACP 40 - ACP 40 G - ACP 40 CV - ACP 40 SH - ACP 40 LG - ACP 40 CP

Harmonized standards and national standards and specifications applied:

French standard NF EN 1012-2: 2009

French standard NF EN 61010-1: 2011

French standard NF EN 61000-6-2: 2005

French standard NF EN 61000-6-4: 2007

Signature:

Guillaume Kreziak

Director of Products, Technology & Projects

Pfeiffer Vacuum SAS

98, avenue de Brogny

74009 Annecy cedex

France

B.P. 2069

15/10/2018

Ed 09 - Date 2018/06 - P/N:112369OEN

*112369*