Pfeiffer Vacuum UNO Operating Instruction
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Pfeiffer Vacuum UNO Operating Instruction

Rotary vane pumps
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Betriebsanleitung • Operating Instructions
Rotary Vane Pumps
UNO/DUO 250 A

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Summary of Contents for Pfeiffer Vacuum UNO

  • Page 1 Betriebsanleitung • Operating Instructions Rotary Vane Pumps UNO/DUO 250 A...

  • Page 2: Table Of Contents

    Index Page Please note: 1. Safety Precautions ........3 Current operating instructions are also available via 1.1. For Your Orientation............3 www.pfeiffer-vacuum.net. 1.2. Pictogram Definitions............3 2. Understanding The Pumps...... 4 2.1. Main Features..............4 2.2. Differences Between The Pump Types......4 3.

  • Page 3: Safety Precautions

    1. Safety Precautions ☞ Read and follow all the instructions in this manual. 1.2. Pictogram Definitions ☞ Inform yourself regarding: ☞ Hazards which can be caused by the pump; Danger of personal injury. WARNING ☞ Hazards which can arise in your system; ☞...

  • Page 4: Understanding The Pumps

    (oiler) – Option: Special gas ballast valve for inert gas inlet (N 2 ) to The UNO 250 A is a single stage and the DUO 250 A is a two prevent atmospheric air entering the system. stage rotary vane pump.

  • Page 5: Installation

    3. Installation 3.1. Preparations For Installation 3.3. Connecting The Vacuum Side ➡ Keep the connection between the vacuum chamber and Do not carry out any unauthorised conversions WARNING or modifications on the pump. pump as short as possible. ➡ Remove all scaling and loose particles from welded lines prior to assembly.

  • Page 6: Connecting To The Mains Power Supply

    3.5. Connecting To The Mains Power Supply Power section with motor to be protected Power connections must comply with local WARNING regulations. Voltage and frequency information given on the rating plate must correspond to the mains voltage and frequency values. When the electrical connections have been completed, carry out the earthed conductor test.
  • Page 7 Connection example for water cooled canned motors with Tripping unit (typ MSR 220 F, order no.: P 4768 051 FQ Control Voltage Voltage see rating plate Pressure key „OFF“ Pressure key „ON“ Control switch (reset key) Motor contactor F1 ... F4 Fuses F1 - F3 T1...
  • Page 8 Important: The instructions in 4.1.2. must be CAUTION observed when working with synthetic operating medium F5. Helium tight and corrosive gas models UNO/DUO 250 A 45/169 45 Gas ballast valve 118 Radial shaft seal 122 Armature 126 O-ring 128 O-ring...

  • Page 9: Special Models

    3.6. Special Models Helium Tight Models – Helium tight models are distinguished by their high level tightness to the atmosphere. – Helium tight models are operated, as standard, with opera- ting medium P3. – The rotor shaft is sealed with an additional radial shaft seal.

  • Page 10: Operations

    Pumps for special applications (e.g. for pumping corrosive gases) can be operated with special operating fluids such as F5 and other Pfeiffer Vacuum operating fluids. The use of such operating fluids requires prior authorisation from the If there is a noticeable loss of operating fluid, manufacturer.

  • Page 11: Switching The Pump On And Off

    4.2. Switching The Pump ON And OFF Gas ballast valve standard model When operating the pump gets hot. WARNING 28 Support stand 45 Gas ballast valve with sliding sleeve 182 Pressure gauge The pump can be switched ON and OFF in any pressure range.

  • Page 12: Pumping Off Dry Gases

    Leak in system Repair leak Unusual operating noises Damaged pump stages Request repair by Pfeiffer Vacuum Service Damaged coupling piece Request repair by Pfeiffer Vacuum Service Oil leaking from the foot of the pump Radial shaft seal defective Request repair by Pfeiffer Vacuum Service Pump doesn't start Ambient temperature <...

  • Page 13: Maintenance

    ➡ Fill up the new operating fluid; refer to rating plate for – The colour scale enables precise colour determination. correct quantity (UNO 250 A --> 30 l, DUO 250 A --> 23 l). ➡ Fill a specimen in a test tube or some similar vessel and ➡...

  • Page 14: Re-Setting The Silencer

    ➡ The pump must have reached its operating temperature. ➡ Remove locking screw 46 (UNO 120A) or operating fluid filler screw 42 (DUO 250 A). ➡ Using a screwdriver, open the valve spindle 47 approx. 3 turns (flushing) for some seconds and then close it again completely (clockwise).

  • Page 15: Cleaning The Gas Ballast Valve

    6.4. Cleaning The Gas Ballast Valve Gas ballast valve 45 can only get dirty if the ambient air sucked in is dusty. Dismantling and assembling the Standard Model ➡ Unscrew valve housing 68 at hexagon nut, take care with the O-ring 31; if necessary proceed as follows: ·...
  • Page 16 Gas balllast devices and silencer Gas ballast inlet valve 45 for standard models 31 68 66 Gas ballast inlet valve 45 for helium-tight and corrosive gas models 53 O-ring 65 O-ring 13 Silencer 54 Screw 66 Dosing insert 14 Non-return valve 55 Insert 67 Circlip 28 Support stand...

  • Page 17: Shutting Down For Longer Periods

    ➡ Drain off remaining operating fluid. ➡ Fill up pump with fresh operating fluid: Filling: UNO 250 A --> 21 l DUO 250 A --> 18 l If this amount of operating fluid is filled in, the level is extremely high but this is necessary to protect all parts of the pump against corrosion.

  • Page 18: Service

    ➡ A copy of the completed declaration must accompany the unit; any additional copies must be sent to your local Pfeif- fer Vacuum Service Center. Please get in touch with your local Pfeiffer Vacuum represen- tatives if there are any questions regarding contamination. Decontaminate units before returning or possi- WARNING ble disposal.

  • Page 19: Technical Data

    8. Technical Data Single stage Unit UNO 250 A Two stage DUO 250 A Connection nominal diameter Inlet ISO-F DN 100 DN 100 Outlet ISO-F DN 100 DN 100 Rated volume flow rate at m 3 /h 50 Hz m 3 /h...

  • Page 20: Dimensions

    8.1. Dimensions 9. Accessories A comprehensive range of accessories can be found in the Pfeiffer Vacuum catalogue, to: – extend the application range of the pumps and – protect the pump from wear, when used under extreme operating conditions. The tripping device to protect against overloading the pump can be ordered under the order number P 4768 051 FQ.

  • Page 21: Declaration Of Contamination

    Declaration of Contamination of Vacuum Equipment and Components The repair and/or service of vacuum components will only be The manufacturer could refuse to accept any equipment carried out if a correctly completed declaration has been without a declaration. submitted. Non-completion will result in delay. This declaration can only be completed and signed by authorised and qualified staff: 1.

  • Page 22: Declaration Of Conformity

    Directive 98/37/EEC, EU Electromagentic Compatibility Directive 89/336/EEC and EU Low Voltage Directive 73/23/EEC. Produkt/ Product : UNO/DUO 250 A Angewendete Richtlinien, harmonisierte Normen und angewendete nationale Normen: Guidelines, harmonised standards, national standards which have been applied: DIN EN ISO 12100-1; DIN EN ISO 12100-2;...
  • Page 24 Roots Pumps Dry Vacuum Pumps Leak Test Units Valves Flanges, Feedthroughs Vacuum Measurement Gas Analysis System Technology Service Pfeiffer Vacuum Technology AG · Headquarters/Germany Tel. +49-(0) 64 41-8 02-0 · Fax +49-(0) 64 41-8 02-2 02 · info@pfeiffer-vacuum.de · www.pfeiffer-vacuum.net...

This manual is also suitable for:

Duo 250 a

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