Pfeiffer DUO 20 M Operating Instructions Manual
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Pfeiffer DUO 20 M Operating Instructions Manual

Rotary vane pump
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DUO 20 M, DUO 20 MC
Rotary Vane Pump
Operating Instructions
EN

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Summary of Contents for Pfeiffer DUO 20 M

  • Page 1 DUO 20 M, DUO 20 MC Rotary Vane Pump Operating Instructions...

  • Page 2: Table Of Contents

    Table of contents Table of contents About this manual ..........3 1.1 Validity.

  • Page 3: About This Manual

    1 About this manual 1.1 Validity This operating manual is for customers of Pfeiffer Vacuum. It describes the functioning of the designated product and provides the most important information for safe use of the unit. The description follows applicable EU guidelines. All information provided in this operating manual refer to the current state of the product's development.
  • Page 4 About this manual Pictograph Prohibition of an action or activity in connection with a source of danger, definitions the disregarding of which may result in serious accidents Warning of a displayed source of danger in connection with operation of the unit or equipment Command to perform an action or task associated with a source of dan- ger, the disregarding of which may result in serious accidents Important information about the product or this document...

  • Page 5: Safety

    Safety 2 Safety 2.1 Safety precautions Duty to inform Each person involved in the installation, operation or maintenance of the vacuum pump must read and observe the safety-related parts of these operating instructions.  The operator is obligated to make operating personnel aware of dangers originating from the vacuum pump, the pumped medium and the entire system.

  • Page 6: Proper Use

    ● use of the vacuum pump to generate pressure ● pumping of liquids ● the use of operating fluids not specified by Pfeiffer Vacuum ● connection to pumps or units which are not suitable for this purpose according to their operating instructions ●...

  • Page 7: Transport And Storage

    Transport and storage 3 Transport and storage 3.1 Transport Transport instructions  Remove the locking cap from the vacuum and exhaust flange immediately before con- necting! – Check the protective strainer, paying attention to the O-ring.  Use only the handle or the crane eye on the top side of the pump to lift the pump. –...

  • Page 8: Product Description

    Product description 4 Product description 4.1 Product identification To correctly identify the product when communicating with Pfeiffer Vacuum, always have the information from the rating plate available and use it: ● Pump model and model number ● Serial number ● Type and amount of operating fluid ●...

  • Page 9: Function

    Vacuum flange Exhaust flange Main switch Casing Gas ballast valve Base plate Sight glass 198 Operating fluid filler screw 198a Operating fluid drain screw 198a Fig. 3: Rotary Vane Pump DUO 20 M...

  • Page 10: Installation

    Installation 5 Installation 5.1 Setting up the pump Installation location Observe the following requirements when setting up the pump: ● Consider the load-bearing capacity of the installation site. ● Maximum installation altitude 2000 m (above mean sea level) ● Permissible ambient temperature: +12 ... 40°C ●...

  • Page 11: Connecting To The Mains Power Supply

    Installation  Choose the cross-section of the exhaust line to be at least the size of the nominal connection diameter of the vacuum pump's exhaust connection.  Piping to the pump must be suspended or supported. – Physical forces from the piping system must not be allowed to act on vacuum pumps.
  • Page 12 Installation The transmission power of the pump’s magnetic coupling is so great that there is no overload protection for the motor. Single phase broad  The mains voltage must be determined on-site each time before the pump is installed or moved to a different location. range voltage motor NOTICE Overvoltage!
  • Page 13 Installation Three-phase motor The three-phase current motor circuit The connections U1 - L2, V1 - L1 and W1 - L3 result in a clockwise rotation of the motor shaft as seen looking towards the motor fan. Delta Connection The three coils are connected in series with the connection point connected to the mains. The voltage of each coil is the same as the mains voltage whereas the mains current is the cube root of the coil current.
  • Page 14 Installation Motor protection Pump motors equipped with PTC temperature sensors (3PTC) in the stator windings can be connected to a PTC resistor tripping device for protection against overload. Other ap- proved motor temperature monitoring can be used also by the operator. Tripping devices store the shutdown event and need to be manually switched back on again via the integrated RESET button or via the external RESET S3.

  • Page 15: Filling Up The Operating Fluid

    NOTICE Use approved operating fluids only! The use of operating fluids that have not been approved by Pfeiffer Vacuum shall result in a limited warranty. In such cases, it is not possible to guarantee that product-specific performance data will be achieved.

  • Page 16: Operations Monitoring (Option)

    Installation 5.6 Operations monitoring (Option) A pressure switch can be installed on the side of the support to monitor the operating fluid pressure of the rotary vane pump during operations. By pressure drop and when the pump is at rest, the contact of the pressure switch opens. The signal can be used to con- trol external valves.

  • Page 17: Operation

    Operation 6 Operation 6.1 Before switching on the pump  Check the operating fluid level in the sight glass.  Compare the voltage and frequency information on the rating plate with the mains volt- age and frequency values.  Check that the exhaust connection allows free flow (max. permissible pressure 150 kPa absolute).
  • Page 18 Operation Fig. 11: Standard version 42 of gas ballast valve Gas ballast valve with If the pumping process requires the use of flushing gas, a supply hose can be connected at the gas ballast valve. flushing gas connec- tion (option) Fig.

  • Page 19: Switching Off The Pump

    Operation 6.4 Switching off the pump The pump can be switched off in any pressure range. Rotary vane pumps have an integrated safety valve on the intake side. If the differential pressure between the exhaust side and the intake side is ≥ 250 hPa, then the valve clos- es automatically and vents the pump when the pump is switched off.

  • Page 20: Maintenance

    Maintenance 7 Maintenance 7.1 Precautions DANGER Strong magnetic field in the vicinity of the drive system! Danger to life for persons with cardiac pacemakers when the drive system is disassem- bled.  Persons with cardiac pacemakers must not enter the area (≤ 2m) of the magnetic field.
  • Page 21 Checklist for inspec- Certain repair and overhaul work should only be performed by Pfeiffer Vacuum Service (PV). Pfeiffer Vacuum will be released from all warranty and liability claims if the required tion, maintenance intervals for inspection, maintenance, or overhaul are exceeded or inspection, mainte- and overhaul nance, repair or overhaul procedures are not performed properly.

  • Page 22: Changing The Operating Fluid

    Depending on the applications, Pfeiffer Vacuum recommends determining the ex- act service life of the operating fluid during the first year of operation. The replacement interval may vary from the guide value specified by Pfeiffer Vacuum depending on the thermal and chemical loads, and the accumulation of suspended par- ticles and condensation in the operating fluid.
  • Page 23  Fill up with operating fluid and check the filling level (see p. 15, chap. 5.5). Request safety data sheets for operating fluids and lubricants from Pfeiffer Vacuum or download them from the Internet.  Dispose of operating fluid according to the local regulations.

  • Page 24: Cleaning Or Changing The Silencer

    Maintenance 7.3 Cleaning or changing the silencer The silencer is a nozzle 44 inside the pump housing and cannot be altered; when dirty it should either be cleaned or replaced. Dismantling  Unscrew 2 cheesehead screws 182 from the gas ballast valve housing. ...

  • Page 25: Decommissioning

     Replace the operating fluid.  Replace the elastomer parts, with reference to DIN 7716 and the manufacturer's spe- cifications.  Follow the maintenance instructions and inform Pfeiffer Vacuum. 8.3 Disposal Products or parts thereof (mechanical and electrical components, operating fluids, etc.) may cause environmental burden.

  • Page 26: Malfunctions

    Malfunctions 9 Malfunctions Please note the following instructions should the pump malfunction: CAUTION Hot surface! Danger of burns if hot parts are touched. The surface temperature of the pump may rise above 105 °C in case of malfunction.  Carry out work on the pump only after it has cooled to a safe temperature. NOTICE Motor overload! Depending on the malfunction (e.g.

  • Page 27: Rectifying Malfunctions

    NOTICE Service work should be carried out by qualified personal only! Pfeiffer Vacuum is not liable for any damage to the pump resulting from work carried out improperly.  Take advantage of our service training programs; additional information at www.pfeif- fer-vacuum.com.

  • Page 28: Service

    The following steps are necessary to ensure a fast, smooth servicing process:  Download the forms "Service Request" and "Declaration on Contamination".  Fill out the "Service Request" form and send it by fax or e-mail to your Pfeiffer Vacuum service address.

  • Page 29: Spare Parts

    Article no. Parts according to the exploded package view on the following page Set of seals DUO 20 M without / as PK E30 008 -T 76, 112, 138, 141, 144, 147, 148, 149, from "A" 152, 154, 155, 156, 158, 162.
  • Page 30 185 Allan head screw 185/183* 188 Allan head screw 193 Compression spring, over pressure valve 195 Ball 204 Circlip 207 Compression spring 208 Washer 220 Screw 250 Compression spring 252 Allan head screw Fig. 15: Exploded view DUO 20 M/MC...

  • Page 31: Accessories

    Accessories 12 Accessories Further detailed accessories are contained in the Pfeiffer Vacuum printed or Online Cat- alogue. Designation DUO 20 M STP 025, dust separator, single-stage for minor contamination PK Z60 206 STR 025, dust separator, dual-stage for medium contamination...

  • Page 32: Technical Data

    Technical data 13 Technical data Parameter DUO 20 M, 1-phase motor DUO 20 MC, 1-phase mo- Flange (in) DN 25 ISO-KF DN 25 ISO-KF Flange (out) DN 25 ISO-KF DN 25 ISO-KF Pumping speed at 50 Hz 20 m 20 m...

  • Page 33: Dimensions

    13.1 Dimensions 76,5 DN 25 ISO-KF 77,5 Ø 7) 112 ... 140 (Ø7) Fig. 16: DUO 20 M Pump with three phase motor Pump with single phase motor 547.5 ± 1 mm 542 mm 212 (without motor protection switch) 257 ± 1 mm...

  • Page 34: Declaration Of Conformity

    In addition, the product cited below satisfies all relevant provisions of EC directive "Elec- tromagnetic Compatibility" 2004/108/EC . The agent responsible for compiling the technical documentation is Mr. Sebastian Ober- beck, Pfeiffer Vacuum GmbH, Berliner Straße 43, 35614 Aßlar. ® DuoLine /DuoLine™...
  • Page 35 Leading. Dependable. Pfeiffer Vacuum stands for innovative and custom Customer Friendly vacuum solutions worldwide. For German engineering art, competent advice and reliable services. Ever since the invention of the turbopump, we´ve been setting standards in our industry. And this claim to leadership will continue to drive us in the future.

This manual is also suitable for:

Duo 20 mc

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