Pfeiffer Vacuum MVP 015-2 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
MVP 015-2
Diaphragm Pump

Dear Customer,
Thank you for choosing a Pfeiffer Vacuum product. Your new diaphragm pump is designed to
support you with its performance, perfect operation and without impacting your individual
application. The name Pfeiffer Vacuum stands for high-quality vacuum technology, a
comprehensive and complete range of top-quality products and first-class service. From this
extensive, practical experience we have gained a large volume of information that can
contribute to efficient deployment and to your personal safety.
In the knowledge that our product must avoid consuming work output, we trust that our
product can offer you a solution that supports you in the effective and trouble-free
implementation of your individual application.
Please read these operating instructions before putting your product into operation for the
first time. If you have any questions or suggestions, please feel free to contact info@pfeiffer-
vacuum.de.
Further operating instructions from Pfeiffer Vacuum can be found in the Download Center on
our website.
Disclaimer of liability
These operating instructions describe all models and variants of your product. Note that your
product may not be equipped with all features described in this document. Pfeiffer Vacuum
constantly adapts its products to the latest state of the art without prior notice. Please take
into account that online operating instructions can deviate from the printed operating
instructions supplied with your product.
Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from
the use of the product that contradicts its proper use or is explicitly defined as foreseeable
misuse.
Copyright
This document is the intellectual property of Pfeiffer Vacuum and all contents of this
document are protected by copyright. They may not be copied, altered, reproduced or
published without the prior written permission of Pfeiffer Vacuum.
We reserve the right to make changes to the technical data and information in this document.
2/40

Table of contents
1 About this manual 7
1.1 Validity 7
1.1.1 Applicable documents 7
1.1.2 Variants 7
1.2 Target group 7
1.3 Conventions 7
1.3.1 Instructions in the text 7
1.3.2 Pictographs 7
1.3.3 Stickers on the product 8
1.3.4 Abbreviations 9
2 Safety 10
2.1 General safety information 10
2.2 Safety instructions 10
2.3 Safety precautions 12
2.4 Limits of use of the product 13
2.5 Proper use 13
2.6 Foreseeable improper use 13
2.7 Personnel qualification 14
2.7.1 Ensuring personnel qualification 14
2.7.2 Personnel qualification for maintenance and repair 14
2.7.3 Advanced training with Pfeiffer Vacuum 14
3 Product description 15
3.1 Function 15
3.1.1 Drive 15
3.1.2 Pumping system 16
3.1.3 Cooling 16
3.1.4 Gas ballast 16
3.2 Connections 16
3.3 Identifying the product 16
3.4 Scope of delivery 16
4 Transportation and Storage 17
4.1 Transporting the vacuum pump 17
4.2 Storing the vacuum pump 17
5 Installation 18
5.1 Installing the vacuum pump 18
5.2 Connecting the vacuum side 18
5.3 Connecting the exhaust side 18
5.4 Establishing mains connection 19
6 Operation 21
6.1 Putting the vacuum pump into operation 21
6.2 Switching on the vacuum pump 21
6.3 Operating the vacuum pump with gas ballast 22
6.4 Switching off the vacuum pump 22
7 Maintenance 23
7.1 Maintenance instructions 23
7.2 Checklist for inspection and maintenance 24
7.3 Change the diaphragms and valves 24
7.3.1 Dismantle the diaphragm head and valves 24
7.3.2 Cleaning and replacing the diaphragms and valves 25
7.3.3 Mount the diaphragm head and valves 26
7.4 Cleaning the gas ballast valve 26
Table of contents
3/40

7.5 Replacing device fuses 27
8 Decommissioning 29
9 Recycling and disposal 30
9.1 General disposal information 30
9.2 Dispose of diaphragm pumps 30
10 Malfunctions 31
11 Service solutions by Pfeiffer Vacuum 33
12 Spare parts packs 35
13 Accessories 36
13.1 Accessory information 36
13.2 Ordering accessories 36
14 Technical data and dimensions 37
14.1 General 37
14.2 Technical data 37
14.3 Substances in contact with the media 38
14.4 Dimensions 38
Declaration of conformity 39
Table of contents
4/40

List of tables
Tbl. 1: Stickers on the product 8
Tbl. 2: Abbreviations used in this document 9
Tbl. 3: Permissible ambient conditions 13
Tbl. 4: Connection description of the diaphragm pump 16
Tbl. 5: Permissible voltage range for reversible single-phase motor 20
Tbl. 6: Typical life with normal use 23
Tbl. 7: Maintenance intervals 24
Tbl. 8: Troubleshooting on diaphragm pumps 32
Tbl. 9: Spare parts 35
Tbl. 10: Accessories MVP 015-2 36
Tbl. 11: Conversion table: Pressure units 37
Tbl. 12: Conversion table: Units for gas throughput 37
Tbl. 13: Technical data MVP 015-2 38
Tbl. 14: Materials that make contact with the process media 38
List of tables
5/40

List of figures
Fig. 1: Position of the stickers on the product 9
Fig. 2: Diaphragm pump design 15
Fig. 3: Voltage selector switch on the terminal box 20
Fig. 4: Gas ballast valve 22
Fig. 5: Diaphragm head and valves 25
Fig. 6: Gas ballast valve 26
Fig. 7: Device fuses 28
Fig. 8: Spare parts 35
Fig. 9: Dimensions MVP 015-2 38
List of figures
6/40

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
Designation Document
Declaration of conformity A component of these operating instructions
1.1.2 Variants
These instructions apply to diaphragm pumps of the AC series:
●MVP 015-2 as standard version
1.2 Target group
These operating instructions are aimed at all persons performing the following activities on the product:
●Transportation
●Setup (Installation)
●Usage and operation
●Decommissioning
●Maintenance and cleaning
●Storage or disposal
The work described in this document is only permitted to be performed by persons with the appropriate
technical qualifications (expert personnel) or who have received the relevant training from Pfeiffer Vac-
uum.
1.3 Conventions
1.3.1 Instructions in the text
Usage instructions in the document follow a general structure that is complete in itself. The required ac-
tion is indicated by an individual step or multi-part action steps.
Individual action step
A horizontal, solid triangle indicates the only step in an action.
►This is an individual action step.
Sequence of multi-part action steps
The numerical list indicates an action with multiple necessary steps.
1. Step 1
2. Step 2
3. ...
1.3.2 Pictographs
Pictographs used in the document indicate useful information.
About this manual
7/40

Note
Tip
1.3.3 Stickers on the product
This section describes all the stickers on the product along with their meaning.
D-35614 Asslar
Mod.
P/N
S/N
MVP 015-2
PK T05 100
xxxxxxxxx
Made in Germany 2019/10
S (N )
Pw
Mass
20.7m /h
120 W
6.5 kg
3
100–115/207–236 V AC, 50/60Hz
Rating plate
Rating plate of the diaphragm pump
Vor Inbetriebnahme: Vorhandene Netz-
spannung am Spannungswahlschalter
der Pumpe einstellen
(siehe Betriebsanleitung).
Electrical connection: Set supply
voltage on voltage selection switch
(see operating instructions).
Information on voltage selector switch
This sticker indicates the necessity to adjust the existing mains
voltage on the voltage selector switch before commissioning.
warranty seal
Closure seal
The product is sealed ex-factory. Damaging or removing a clo-
sure seal results in loss of the warranty.
Tbl. 1: Stickers on the product
About this manual
8/40

1
2
3
3
Fig. 1: Position of the stickers on the product
1 Rating plate 3 Closure seal
2 Information on voltage selector switch
1.3.4 Abbreviations
Abbreviation Meaning in this document
AC Alternating current
DN Nominal diameter (from the French: diamètre nominal)
EPDM Ethylenepropylene diene-monomer rubber
MVP Diaphragm vacuum pump
NN Mean sea level
PA Polyamide
PE Polyethylene
Earthed conductor (protective earth)
PVC Polyvinyl chloride (PVC)
WAF width across flats
Tbl. 2: Abbreviations used in this document
About this manual
9/40

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.
2.2 Safety instructions
All safety instructions in this document are based on the results of the risk assessment carried out in
accordance with Machinery Directive 2006/42/EC Annex I and EN ISO 12100 Section 5. As far as appli-
cable, all unit life cycle phases have been considered.
Risks during transport
WARNING
Danger of serious injury due to falling objects
Due to falling objects there is a risk of injuries to limbs through to broken bones.
►Take particular care and pay special attention when transporting products manually.
►Do not stack the products.
►Wear protective equipment, e.g. safety shoes.
Safety
10/40

Risks during installation
DANGER
Danger to life from electric shock
Inadequate or incorrect grounding of the unit leads to contact-sensitive voltage on the housing. When
making contact, increased leakage currents will cause a life-threatening electric shock.
►Before the installation, check that the connection leads are voltage-free.
►Conduct the electrical connection in accordance with locally applicable regulations.
►Make sure that the local mains voltage and frequency match rating plate specifications.
►Make sure that the mains cable and extension cable meet the requirements for double isolation
between input voltage and output voltage, in accordance with IEC 61010 and IEC 60950.
►Use only a 3-pin mains cable and extension cable with properly connected protective earthing
(earthed conductor).
►Plug the mains plug into a socket with earthing contact only.
►Always connect the mains cable prior to all other cables, to ensure continuous protective earth-
ing.
CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or inadequate exhaust pipes lead to dangerous situations, e.g. increased exhaust pressure.
There is a danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and
damage to the unit cannot be excluded.
►Route the exhaust line without shut-off units.
►Observe the permissible pressures and pressure differentials for the product.
►Check the function of the exhaust line on a regular basis.
Risks during operation
WARNING
Danger of poisoning due to toxic process media escaping from the exhaust pipe
During operation with no exhaust line, the vacuum pump allows exhaust gases and vapors to escape
freely into the air. There is a risk of injury and fatality due to poisoning in processes with toxic process
media.
►Observe the pertinent regulations for handling toxic process media.
►Safely purge toxic process media via an exhaust line.
►Use appropriate filter equipment to separate toxic process media.
WARNING
Risk of burns on hot surfaces
During vacuum pump operation, exposed surfaces reach high temperatures. There is a risk of burn-
ing.
►Allow the vacuum pump to cool down before carrying out any work.
►Wear protective gloves (in accordance with EN 420).
Risks during maintenance, decommissioning and in event of malfunctions
WARNING
Risk of burns on hot surfaces
During vacuum pump operation, exposed surfaces reach high temperatures. There is a risk of burn-
ing.
►Allow the vacuum pump to cool down before carrying out any work.
►Wear protective gloves (in accordance with EN 420).
Safety
11/40

WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
Risks during disposal
WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
2.3 Safety precautions
The product is designed according to the latest technology and recognized safety engineering rules.
Nevertheless, improper use can result in danger to operator all third party life and limb, and product
damage and additional property damage.
Duty to provide information on potential dangers
The product holder or user is obliged to make all operating personnel aware of dangers
posed by this product.
Every person who is involved in the installation, operation or maintenance of the product
must read, understand and adhere to the safety-related parts of this document.
Infringement of conformity due to modifications to the product
The Declaration of Conformity from the manufacturer is no longer valid if the operator
changes the original product or installs additional equipment.
●Following the installation into a system, the operator is required to check and re-evalu-
ate the conformity of the overall system in the context of the relevant European Direc-
tives, before commissioning that system.
General safety precautions for working with the vacuum pump
►Observe all applicable safety and accident prevention regulations.
►Check that all safety measures are observed at regular intervals.
►Do not expose body parts to the vacuum.
►Always ensure a secure connection to the earthed conductor (PE).
►Never disconnect plug connections during operation.
►Observe the above shutdown procedures.
►Keep lines and cables away from hot surfaces (> 70 °C).
►Never fill or operate the unit with cleaning agents or cleaning agent residues.
►Do not carry out your own conversions or modifications on the unit.
►Observe the unit protection class prior to installation or operation in other environments.
►Observe statutory and local regulations regarding solvents handling.
►Never operate an open or faulty unit.
►Before carrying out any maintenance, first allow the unit to cool and disconnect it from the vacuum
equipment.
Safety
12/40

►Disconnect the vacuum pump from the mains prior to every intervention, and wait an additional
five seconds until the capacitors have discharged.
►Implement suitable safety precautions where unintentional vacuum pump venting can cause haz-
ards.
–Power failures can cause unintentional venting.
2.4 Limits of use of the product
Installation location weatherproof (internal space)
Installation altitude max. 2000 m above sea level 1)
Relative air humidity 80% at T ≤ 31 °C, to max. 50% at T ≤ 40 °C
Protection category IP 20
Excess voltage category II
Degree of contamination 2
Ambient temperature +12 °C to +40 °C
Tbl. 3: Permissible ambient conditions
2.5 Proper use
►Use the vacuum pump for vacuum generation only.
►Adhere to the installation, commissioning, operating, and maintenance instructions.
►Do not use any accessory parts other than those recommended by Pfeiffer Vacuum.
2.6 Foreseeable improper use
Misuse of the product invalidates all warranty and liability claims. Any use that is counter to the purpose
of the product, whether intentional or unintentional, is regarded as misuse, in particular:
●Pumping of corrosive media
●Pumping explosive media
●Pumping radioactive or volatile media
●Pumping of gases that introduce an ignition source to the suction chamber
●Pumping of gases that contain impurities such as particles, dust, or condensate
●Pumping of fluids
●Pumping FPM-solubilizing media
●Pumping vapors from combustible liquids
●Pumping pressurized media (> atmospheric pressure)
●Pumping media that can condense or cause adhering deposits to form in the suction chamber
●Use of the vacuum pump outside the specified area of application
●Using the vacuum pump below ground
●Using the vacuum pump to generate pressure
●Using the vacuum pump in systems in which sporadic loads and vibrations or periodic forces act
on the unit
●Using the vacuum pump in strong electrical, magnetic, or electromagnetic fields
●Connection to vacuum pumps or equipment which are not suitable for this purpose according to
their operating instructions
●Connection to devices with exposed live parts
●Connecting to sockets without earthing contact
●Using pipes to lift the vacuum pump
●Use of accessories or spare parts that are not listed in these instructions
●Using the vacuum pump as a climbing aid
●Using the connection lines between the diaphragm heads as carrying handles
●Using the pump in ambient conditions that do not meet the specified IP protection class limits
1) at an installation location above 1000 meters above sea level, there is a risk of insufficient cooling. If necessa-
ry, take measures according to Directive DIN EN 61010.
Safety
13/40

2.7 Personnel qualification
The work described in this document may only be carried out by persons who have appropriate profes-
sional qualifications and the necessary experience or who have completed the necessary training as
provided by Pfeiffer Vacuum.
Training people
1. Train the technical personnel on the product.
2. Only let personnel to be trained work with and on the product when under the supervision of
trained personnel.
3. Only allow trained technical personnel to work with the product.
4. Before starting work, make sure that the commissioned personnel have read and understood
these operating instructions and all applicable documents, in particular the safety, maintenance
and repair information.
2.7.1 Ensuring personnel qualification
Specialist for mechanical work
Only a trained specialist may carry out mechanical work. Within the meaning of this document, special-
ists are people responsible for construction, mechanical installation, troubleshooting and maintenance
of the product, and who have the following qualifications:
●Qualification in the mechanical field in accordance with nationally applicable regulations
●Knowledge of this documentation
Specialist for electrotechnical work
Only a trained electrician may carry out electrical engineering work. Within the meaning of this docu-
ment, electricians are people responsible for electrical installation, commissioning, troubleshooting, and
maintenance of the product, and who have the following qualifications:
●Qualification in the electrical engineering field in accordance with nationally applicable regulations
●Knowledge of this documentation
In addition, these individuals must be familiar with applicable safety regulations and laws, as well as the
other standards, guidelines, and laws referred to in this documentation. The above individuals must
have an explicitly granted operational authorization to commission, program, configure, mark, and earth
devices, systems, and circuits in accordance with safety technology standards.
Trained individuals
Only adequately trained individuals may carry out all works in other transport, storage, operation and
disposal fields. Such training must ensure that individuals are capable of carrying out the required activi-
ties and work steps safely and properly.
2.7.2 Personnel qualification for maintenance and repair
Advanced training courses
Pfeiffer Vacuum offers advanced training courses to maintenance levels 2 and 3.
Adequately trained individuals are:
●Maintenance level 1
─Customer (trained specialist)
●Maintenance level 2
─Customer with technical education
─Pfeiffer Vacuum service technician
●Maintenance level 3
─Customer with Pfeiffer Vacuum service training
─Pfeiffer Vacuum service technician
2.7.3 Advanced training with Pfeiffer Vacuum
For optimal and trouble-free use of this product, Pfeiffer Vacuum offers a comprehensive range of
courses and technical trainings.
For more information, please contact Pfeiffer Vacuum technical training.
Safety
14/40

3 Product description
3.1 Function
Diaphragm pumps are dry compressing positive displacement pumps. The movement of diaphragms
generates a periodic change of the suction chamber volume. The gas flow causes the valves to open
and close automatically. The pump unit is directly connected to the drive motor.
12
34
5
6
7
8
9
10
11
12
13
Fig. 2: Diaphragm pump design
1 Mains switch 8 Diaphragm head 1
2 Mains connection with locking plate 9 Exhaust connection with silencer
3 Voltage selector switch 10 Diaphragm head 2
4 Gas ballast valve 11 Hose connection
5 Banjo bolt for gas ballast valve 12 Base plate
6 Input amplification 13 Rubber feet (4×)
7 Vacuum connection
3.1.1 Drive
The drive motor is an alternating current motor with
●reversible voltage range on the voltage selector switch,
●thermal protection switch,
●mains switch and
●rubber connector
In event of excess temperature (> 95 °C), the thermic protection switch interrupts the motor current, but
does not offer a permanent shut-down of the motor. Once the motor has cooled down, the vacuum
pump restarts automatically.
Product description
15/40

3.1.2 Pumping system
The diaphragm pump has 2 diaphragm heads and 2 pumping stages.
3.1.3 Cooling
The diaphragm pump is convection-cooled. The drive motor has its own fan.
3.1.4 Gas ballast
An integrated gas ballast system serves the controlled supply of ambient air or inert gas into the suction
chamber. Gas ballast supports the reduction of condensate accumulating in the pumping system.
3.2 Connections
Connection Description
Mains power supply
Housing connector C14 for the voltage supply
Tbl. 4: Connection description of the diaphragm pump
3.3 Identifying the product
►To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
►Learn about certifications through test seals on the product or at www.tuev-sued.de.
3.4 Scope of delivery
●Vacuum pump with drive
●Mains connection (reversible)
●Silencer
●G 1/8" elbow union with enclosed hose DN 6 x 1000 mm with a straight union in G 1/4" at the end
●Blind plug on the vacuum connection
●Operating instructions
Product description
16/40

4 Transportation and Storage
4.1 Transporting the vacuum pump
WARNING
Danger of serious injury due to falling objects
Due to falling objects there is a risk of injuries to limbs through to broken bones.
►Take particular care and pay special attention when transporting products manually.
►Do not stack the products.
►Wear protective equipment, e.g. safety shoes.
Packing
We recommend keeping the transport packaging and original protective cover.
General information regarding safe transport
1. Observe the weight specified on packaging.
2. Where possible, always transport or ship the product in the original packaging.
3. Always place the product on an adequately sized, level surface.
Transporting the vacuum pump without its packaging
1. Unpack the vacuum pump.
2. To protect the inside of the pump, leave the blind plugs on the vacuum connection during trans-
port.
3. Lift the vacuum pump on both front sides.
4. Lift the vacuum pump out of the transport packaging.
5. Make sure that no forces are acting on the piping system.
6. Always place the vacuum pump on an adequately sized, level surface.
4.2 Storing the vacuum pump
Packing
We recommend storing the product in its original packaging.
Procedure
1. Seal the vacuum connection with the blind plug.
2. Store the vacuum pump only in dry, dust-free rooms, within the specified ambient conditions.
3. In rooms with humid or aggressive atmospheres: Hermetically seal the vacuum pump together
with a drying agent in a plastic bag.
Transportation and Storage
17/40

5 Installation
5.1 Installing the vacuum pump
Procedure
►Place the vacuum pump on a flat, horizontal surface.
►For stationary installation, screw the vacuum pump direct to the mounting surface.
►When installing the pump in a closed housing, ensure adequate air circulation.
►Keep the specifications on the motor rating plate visible and freely accessible.
►Keep the gas ballast valve visible and freely accessible.
5.2 Connecting the vacuum side
NOTICE
Property damage from contaminated gases
Pumping down gases that contain impurities (condensate, particles) damages the vacuum pump.
►Use suitable filters or separators from the Pfeiffer Vacuum range of accessories, to protect the
vacuum pump.
Installation and operation of accessories
Pfeiffer Vacuum offers a series of special, compatible accessories for its diaphragm pumps.
●Information and ordering options for approved accessories can be found online.
●Described accessories are not included in the shipment.
Preventing throttling losses
Using the shortest possible vacuum connection lines with large nominal diameter prevents
pressure losses.
Condensate separator
Pfeiffer Vacuum recommends the installation of a condensate separator in case vapors are
formed from moisture during evacuation.
Procedure
1. Remove the blind plug from the vacuum connection.
2. Establish the shortest possible connection between vacuum pump and vacuum chamber.
3. Choose a minimum vacuum line diameter equal to the nominal diameter of the vacuum connec-
tion.
4. Depending on the pump type, use PVC or metallic hoses with flange connections from the Pfeiff-
er Vacuum component shop.
5. Connect the vacuum pump to the vacuum system using the vacuum connection.
5.3 Connecting the exhaust side
WARNING
Danger to life from poisoning where toxic process gases leak with no exhaust line
During normal operation, the vacuum pump expels exhaust gases and vapors freely into the air. In
processes involving toxic media, there is a risk of injury and danger to life due to poisoning.
►Observe the relevant regulations for handling toxic substances.
►Safely purge toxic process gases via an exhaust line.
Installation
18/40

CAUTION
Danger of injury from bursting as a result of high pressure in the exhaust line
Faulty or inadequate exhaust pipes lead to dangerous situations, e.g. increased exhaust pressure.
There is a danger of bursting. Injuries caused by flying fragments, the escaping of high pressure, and
damage to the unit cannot be excluded.
►Route the exhaust line without shut-off units.
►Observe the permissible pressures and pressure differentials for the product.
►Check the function of the exhaust line on a regular basis.
Condensate separator
Pfeiffer Vacuum recommends installing a condensate separator, with condensate drain at
the lowest point of the exhaust line.
Procedure
1. Check the installed silencer for free passage.
2. Choose a minimum exhaust line diameter equal to the nominal diameter of the connection flange.
3. Depending on the pump type, use PVC or metallic hoses with flange connections from the Pfeiff-
er Vacuum component shop.
4. Option: In case of higher gas throughputs, mount an exhaust line.
5. Route the piping downwards from the vacuum pump, to prevent condensate return.
6. Support or suspend the piping to the vacuum pump so that no piping system forces act on the
vacuum pump.
5.4 Establishing mains connection
DANGER
Danger to life from electric shock
Contact with exposed and live elements generate an electric shock. Incorrect connection of the mains
supply leads to the risk of live housing parts that can be touched. There is a risk to life.
►Before the installation, check that the connection leads are voltage-free.
►Make sure that electrical installations are only carried out by qualified electricians.
►Provide adequate grounding for the device.
►After connection work, do a PE conductor check.
NOTICE
Risk of property damage from excess voltage
Incorrect or excessive mains voltage will destroy the motor.
►Always observe the motor rating plate specifications.
►Route the mains connection in accordance with locally applicable provisions.
►Always provide a suitable mains fuse to protect the motor and supply cable in the event of a fault.
NOTICE
Property damage from the voltage range being set incorrectly
Recommissioning after longer downtimes of the vacuum pump or after changing the oil requires the
current settings to be checked.
►Before switching the vacuum pump on each time, check the currently set voltage range.
►Make changes to the voltage range only after the vacuum pump has been disconnected from the
mains.
Installation
19/40

115
230
115
230
115 230
Fig. 3: Voltage selector switch on the terminal box
Switch position: "115" "230"
Voltage range 90 – 127 V, 50/60 Hz 187 – 259 V, 50/60 Hz
Tbl. 5: Permissible voltage range for reversible single-phase motor
Required tool
●Screwdriver
Changing the voltage range
1. The mains voltage must be determined on-site each time before the vacuum pump is installed or
moved to a different location.
2. Disconnect the vacuum pump from the mains.
3. Set the required voltage range on the voltage selector switch using a suitable screwdriver.
Establish the mains supply
1. Order a corresponding mains connection cable from the Pfeiffer Vacuum accessories range.
2. Always ensure a secure connection to the earthed conductor (PE).
3. Plug the mains cable into the power supply plug of the vacuum pump.
Installation
20/40