Pfeiffer Vacuum MVP 20-3 DC User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
MVP 020-3 DC
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.
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Table of contents
1 About this manual 7
1.1 Validity 7
1.1.1 Applicable documents 7
1.1.2 Variants 7
1.2 Target group 7
1.3 Conventions 7
1.3.1 Instructions in the text 7
1.3.2 Pictographs 8
1.3.3 Stickers on the product 8
1.3.4 Abbreviations 8
2 Safety 10
2.1 General safety information 10
2.2 Safety instructions 10
2.3 Safety precautions 13
2.4 Limits of use of the product 13
2.5 Proper use 14
2.6 Foreseeable improper use 14
2.7 Personnel qualification 14
2.7.1 Ensuring personnel qualification 15
2.7.2 Personnel qualification for maintenance and repair 15
2.7.3 Advanced training with Pfeiffer Vacuum 15
3 Product description 16
3.1 Function 16
3.2 Identifying the product 16
3.3 Shipment 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 19
5.4 Establishing control signal connections 19
5.4.1 Establishing connections to the rotation speed setting 20
5.4.2 Establishing a connection for interval operation 21
5.5 Connecting the voltage supply 21
6 Operation 22
6.1 Putting the vacuum pump into operation 22
6.2 Switching on the vacuum pump 22
6.3 Adjusting rotation speed 23
6.4 Operating the diaphragm pump in interval operation 23
6.5 Pumping condensable vapors 23
6.6 Switching off the vacuum pump 24
7 Maintenance 25
7.1 Maintenance instructions 25
7.2 Checklist for inspection and maintenance 26
7.3 Change the diaphragms and valves 26
7.3.1 Dismantle the pump head and valves 26
7.3.2 Dismantling the diaphragms 27
7.3.3 Installing the diaphragm 28
7.3.4 Installing the pump head and valves 29
Table of contents
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7.4 Checking the final pressure 29
8 Decommissioning 31
9 Recycling and disposal 32
9.1 General disposal information 32
9.2 Dispose of diaphragm pumps 32
10 Malfunctions 33
11 Service solutions by Pfeiffer Vacuum 35
12 Spare parts packages 37
13 Accessories 38
13.1 Accessory information 38
13.2 Ordering accessories 38
14 Technical data and dimensions 39
14.1 General 39
14.2 Technical data 39
14.3 Substances in contact with the media 40
14.4 Dimensions 40
Declaration of conformity 41
Table of contents
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List of tables
Tbl. 1: Stickers on the product 8
Tbl. 2: Abbreviations used in this document 9
Tbl. 3: Limits of use of the product 14
Tbl. 4: Intake temperature limits of use 14
Tbl. 5: Overview of connections on terminal block ST1B 20
Tbl. 6: Typical service life with normal use 25
Tbl. 7: Maintenance intervals 26
Tbl. 8: Troubleshooting on diaphragm pumps 34
Tbl. 9: LED display of error codes 34
Tbl. 10: Spare parts packages 37
Tbl. 11: Accessories 38
Tbl. 12: Conversion table: Pressure units 39
Tbl. 13: Conversion table: Units for gas throughput 39
Tbl. 14: Technical data, MVP 020-3 DC 40
Tbl. 15: Materials that make contact with the process media 40
List of tables
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List of figures
Fig. 1: Position of the labels on the product 8
Fig. 2: Diaphragm pump design 16
Fig. 3: Minimum distances 18
Fig. 4: Circuit board with terminals 20
Fig. 5: Connection to TC and TPS 21
Fig. 6: Mounting the flushing gas nozzle 24
Fig. 7: Pump head and valves 27
Fig. 8: Replacing the diaphragms 28
Fig. 9: Correct mounting orientation of the valves in the head cover 29
Fig. 10: LED on the circuit board 34
Fig. 11: Spare parts 37
Fig. 12: Dimensions MVP 020-3 DC 40
List of figures
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1 About this manual
IMPORTANT
Read carefully before use.
Keep the manual for future consultation.
1.1 Validity
This operating instructions is a customer document of Pfeiffer Vacuum. The operating instructions de-
scribe the functions of the named product and provide the most important information for the safe use of
the device. The description is written in accordance with the valid directives. The information in this op-
erating instructions refers to the product's current development status. The document shall remain valid
provided that the customer does not make any changes to the product.
1.1.1 Applicable documents
Designation Document
Declaration of conformity A component of these operating instructions
1.1.2 Variants
These operating instructions apply to diaphragm pumps with the following part numbers:
Part number Designation
PK T01 198 MVP 020-3 DC
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. ...
About this manual
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1.3.2 Pictographs
Pictographs used in the document indicate useful information.
Note
Tip
1.3.3 Stickers on the product
This section describes all the stickers on the product along with their meaning.
Pfeiffer Vacuum
D - 35614 Asslar
Germany
MVP 020-3DC PK T01 198
24 V – max. 5.5 A
Pw: 64 W m: 4.3 kg S 1.2 m /h
Ser.-Nr.:
xxxxxxxxxxxx
(N2)3
Rating plate
The rating plate is located on the cover of the electronics.
Warning of hot surfaces
The label warns of hot surfaces during operation or immediately after
switching off the vacuum pump.
warranty seal
Closure seal
The diaphragm heads are sealed at the factory. Damaging or remov-
ing a closure seal results in loss of the warranty.
Tbl. 1: Stickers on the product
1
2
Fig. 1: Position of the labels on the product
1 Rating plate of the diaphragm pump
Incl. hot surface warning sign
2 Closure seal
1.3.4 Abbreviations
Abbreviation Meaning in this document
DC Direct current
DN Nominal diameter (from the French: diamètre nominal)
fRotation speed value of a vacuum pump (frequency, in rpm or Hz)
LED Light emitting diode
MVP Diaphragm vacuum pump
PE Earthed conductor (protective earth)
PTFE Polytetrafluoroethylene
PWM Pulse width modulation
(Type of modulation in which one technical variable (e.g. The electrical voltage)
changes between 2 values.)
About this manual
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Abbreviation Meaning in this document
TTemperature (in °C), property abbreviation of the vacuum pump
TC Turbopump electronic drive unit (turbo controller)
TPS Voltage supply (turbo power supply)
Tbl. 2: Abbreviations used in this document
About this manual
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2 Safety
2.1 General safety information
The following 4 risk levels and 1 information level are taken into account in this document.
DANGER
Immediately pending danger
Indicates an immediately pending danger that will result in death or serious injury if not observed.
►Instructions to avoid the danger situation
WARNING
Potential pending danger
Indicates a pending danger that could result in death or serious injury if not observed.
►Instructions to avoid the danger situation
CAUTION
Potential pending danger
Indicates a pending danger that could result in minor injuries if not observed.
►Instructions to avoid the danger situation
NOTICE
Danger of damage to property
Is used to highlight actions that are not associated with personal injury.
►Instructions to avoid damage to property
Notes, tips or examples indicate important information about the product or about this docu-
ment.
2.2 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 installation
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.
Safety
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NOTICE
Vacuum pump damage caused by overpressure
Mixing up the connections causes overpressure overload. The vacuum pump can be started only
against max. 1 bar differential pressure between inlet and outlet; otherwise the motor jams and sus-
tains damage.
►Make sure that the distributor is installed correctly on the diaphragm heads, before connecting
the vacuum pump to the vacuum equipment.
►Before commissioning, make completely sure that the pressure side pressure is below the per-
missible limit.
NOTICE
Property damage due to incorrect polarity
Incorrect or excessive supply voltage will destroy the motor.
►Always observe the motor rating plate specifications.
►When connecting the supply cable, observe the colored marking on the corresponding wires.
►Always provide a suitable mains fuse.
Risks during operation
WARNING
Health hazard through poisoning from toxic contaminated components or devices
Toxic process media result in contamination of devices or parts of them. During maintenance work,
there is a risk to health from contact with these poisonous substances. Illegal disposal of toxic sub-
stances causes environmental damage.
►Take suitable safety precautions and prevent health hazards or environmental pollution by toxic
process media.
►Decontaminate affected parts before carrying out maintenance work.
►Wear protective equipment.
WARNING
Risk of explosion from reactive, explosive or other hazardous gas / air mixtures.
Uncontrolled inlet of gas at the flushing gas nozzle leads to sparks generated mechanically following
diaphragm rupture, hot surfaces or to explosive gas / air mixtures in the vacuum system caused by
static electricity.
►If necessary, use inert gas for supplying the flushing gas in order to avoid a potential ignition.
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.
CAUTION
Risk of poisoning due to toxic process gases escaping
For intake pressures > 500 hPa, process gas may escape from the flushing gas nozzle.
►If necessary, use an extraction line.
Safety
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CAUTION
Danger of injury from moving parts
After a power failure or a standstill as a result of overheating, the motor restarts automatically. There
is a risk of injury to fingers and hands if they enter the operating range of rotating parts.
►Safely disconnect motor from the mains.
►Secure the motor against reactivation.
►Dismantle the vacuum pump for inspection, away from the system if necessary.
CAUTION
Danger of burns on hot surfaces
In the event of a fault, the surface temperature of the vacuum pump can increase to above 105 °C.
►Allow the vacuum pump to cool down before carrying out any work.
►Wear personal protective equipment if necessary.
CAUTION
Danger of burns on hot surfaces
Depending on the operating and ambient conditions, the surface temperature of the vacuum pump
can increase to above 70 °C.
►Provide suitable touch protection.
Risks during maintenance, decommissioning and in event of malfunctions
NOTICE
Danger of property damage from improper maintenance
Unprofessional work on the vacuum pump will lead to damage for which Pfeiffer Vacuum accepts no
liability.
►We recommend taking advantage of our service training offering.
►When ordering spare parts, specify the information on the nameplate.
NOTICE
Property damage from incorrect installation
Change in dead volume due to incorrect installation of the original spacer disks impairs the final vac-
uum or leads to bearing damage.
►During disassembly, keep the existing spacer disks separate per installation location.
►Reinstall the same number of original spacer disks per diaphragm head.
NOTICE
Property damage from electrostatic discharge
Neglecting the electrostatic hazard for electronic components results in their damage or destruction
►Implement ESD safety measures at the workstation.
►Observe EN 61340 "Protection of electronic devices from electrostatic phenomena".
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.
Safety
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2.3 Safety precautions
DANGER
Danger to life from electric shock
Power supply packs that are not specified or are not approved will lead to severe injury to death.
►Make sure that the power supply pack meets the requirements for double isolation between
mains input voltage and output voltage, in accordance with IEC 61010-1 IEC 60950-1 and
IEC 62368-1.
►Make sure that the power supply pack meets the requirements in accordance with IEC 61010-1
IEC 60950-1 and IEC 62368-1.
►Where possible, use original power supply packs or only power supply packs that correspond
with the applicable safety regulations.
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
►Prevent process gases and their reaction and ancillary products that are harmful to health and the
environmental from escaping, or dispose of these according to the applicable regulations.
►Avoid contact with process gases that are harmful to health and if required, wear personal protec-
tive clothing.
►Check the media compatibility of parts carrying media.
►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.
►Never disconnect plug connections during operation.
►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 degree prior to installation or operation in other environments.
►Provide suitable touch protection, if the surface temperature exceeds 70°C.
►Keep lines and cables away from hot surfaces.
►Before returning the vacuum pump, observe the notes in the chapter Service solutions.
2.4 Limits of use of the product
Installation location Interiors, protected against the accumulation of dust and weather in-
fluences, in a non-explosive, dry environment
Protection degree IEC 60529 IP 20
Protection degree UL 50E NEMA type 1
Installation altitude max. 2000 m above sea level 1)
Ambient temperature +10 ℃ to +40 ℃
1) at an installation location higher than 1000 meters above sea level, there is a risk of insufficient cooling. If nec-
essary, take measures according to Directive DIN EN 61010.
Safety
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Relative air humidity 80% at T ≤ 31 °C, to max. 50% at T ≤ 40 °C
Degree of contamination 2
Tbl. 3: Limits of use of the product
Operations condition, status Intake pressure Permissible intake temperature of
medium to be pumped
Continuous operation > 100 hPa (high gas load) +10 ℃ to +40 ℃
Continuous operation < 100 hPa (low gas load) 0 ℃ to +60 ℃
short-term (< 5 minutes) < 100 hPa (low gas load) -10 ℃ to +80 ℃
Tbl. 4: Intake temperature limits of use
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
Improper use of the product invalidates all warranty and liability claims. Any use that is counter to the
purpose of the product, whether intentional or unintentional, is regarded as improper use; in particular:
●Pumping of corrosive media
●Pumping of explosive media
●Pumping radioactive or volatile media
●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 degree limits
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.
Safety
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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
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3 Product description
3.1 Function
The diaphragm pump is a dry compressing vacuum pump with 3 pumping stages. This vacuum pump is
a positive displacement pump with a periodic change in suction chamber size, produced by the move-
ment of the diaphragm. The gas flow causes the valves to open and close automatically. The pump
units are directly connected to the drive motor.
1
4
5
6
7
8
2
3
9
Fig. 2: Diaphragm pump design
1 Handle 6 Connecting socket (control signals)
(for Binder bayonet connectors, 2-pin, Ø12 mm)
2 Vacuum connection, thread 1/8" 7 Connecting socket (voltage supply)
(for Hirschmann line socket G20KW3F, 2-pin)
3 Banjo bolt 8 Exhaust
4 Interhead connection 9 Cover fixing screw
5 Locking screw
(optional: flushing gas nozzle)
3.2 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.certipedia.com with compa-
ny ID no. 000021320.
3.3 Shipment
●Vacuum pump with drive
●Operating instructions
●Blind plug on the vacuum connection
Product description
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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. Use a transport aid if necessary (trolley, lift truck).
3. Transport the product in its original packaging.
4. 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 both protective caps on the connections during transport.
3. For lifting, use the handle provided for this purpose, located on the top of the pump.
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
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5 Installation
5.1 Installing the vacuum pump
Fig. 3: Minimum distances
Procedure
1. Place the vacuum pump on a flat, horizontal surface.
2. For stationary installation, screw the vacuum pump directly to the base if necessary.
–For this purpose, dismantle the rubber feet.
3. When installing the pump in a closed housing, ensure adequate air circulation.
–The vacuum pump does not have a fan.
4. Make sure that minimum distances to adjacent components, e.g., walls, housings, etc., are ob-
served.
5. Keep the specifications on the motor rating plate 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.
Installation
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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.
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. Choose a minimum exhaust line diameter equal to the nominal diameter of the connection flange.
2. Depending on the pump type, use PVC or metallic hoses with flange connections from the Pfeiff-
er Vacuum component shop.
3. Option: In case of higher gas throughputs, mount an exhaust line.
4. Route the piping downwards from the vacuum pump, to prevent condensate return.
5. Support or suspend the piping to the vacuum pump so that no piping system forces act on the
vacuum pump.
5.4 Establishing control signal connections
NOTICE
Property damage from electrostatic discharge
Neglecting the electrostatic hazard for electronic components results in their damage or destruction
►Implement ESD safety measures at the workstation.
►Observe EN 61340 "Protection of electronic devices from electrostatic phenomena".
Required tool
●Phillips head (crosshead) screwdriver, size 2
Removing the cover
1. Loosen the fixing screw on the cover.
2. Remove the cover to the extent necessary without damaging the cable.
3. Finally, slide the cover back on completely.
4. Fasten the cover with the fixing screw.
Installation
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1 2
3
4
Fig. 4: Circuit board with terminals
1 Trimmer 3 Terminal block ST1B (control signals)
2 LED for error code display 4 Terminal block ST1A (voltage supply)
Rotation speed set value Terminal block ST1B
V+ V- PWM A B
External through PWM signal - black red - -
External through analog voltage red black - - -
Internal via trimmer - - - - -
Cable cross-section = 0.25 mm2
Tbl. 5: Overview of connections on terminal block ST1B
5.4.1 Establishing connections to the rotation speed setting
Trimmer priority
The trimmer has priority over the control signals.
Required tool
●Slot screwdriver
Connecting the external PWM signal
1. Turn the trimmer to the left stop.
2. Connect the corresponding terminals of terminal block ST1B.
–The control cable (red/black) is firmly connected to the connecting socket on the diaphragm
pump.
3. For a user-specific rotation speed preset, use the control cable to apply an electrically isolated
PWM signal to terminal block ST1B.
–5 V to 24 V (mandatory), boundary frequency: > 100 Hz, < 1.5 kHz
Connecting analog voltage
1. Turn the trimmer to the left stop.
2. Connect the corresponding terminals of terminal block ST1B.
–The control cable (red/black) is firmly connected to the connecting socket on the diaphragm
pump.
Installation
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