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Bedienungsanleitung Bissell HS-20

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  • Bissell HS-20 - page 1

    HS-20 Diffusion Pump Instruction Manual Varian V acuum Technologies 12 1 Hartwell Avenue Lexington, MA 0242 1 (78 1)86 1-7200 Manual No. 6999-0 1-120 Revision G October 2000 ...

  • Bissell HS-20 - page 2

    America Varian Vacuum Technologies 121 Hartwell Avenue Lexington, MA 02421, USA Tel: (781) 861 7200 Fax: (781) 860 5437 Toll Free: 1 (800) 882 7426 Argentina Varian Argentina Ltd. Sucursal Argentina Av. Ricardo Balbin 2316 1428 Buenos Aires Argentina Tel: (54) 1 783 5306 Fax: (54) 1 786 5172 Australia Varian Australia Pty., Ltd. 6/81 Frenchs Forest ...

  • Bissell HS-20 - page 3

    T elephone Numbers F or technical suppor t and ser vice within the continental United States , Alaska and Haw aii: Continental U .S. only – 1-800-8-V ARIAN (1-800-882-7426) Order Entr y (Sales) ..............................................................................Press 1 T echnical Suppor t and Field Ser vice.............................. ...

  • Bissell HS-20 - page 4

    3/5/97 W arranty Products manuf actured by Seller are w arranted against def ects in materials and workmanship for twelv e (12) months from date of shipment thereof to Customer , and Seller’ s liability under v alid w ar- ranty claims is limited, at the option of Seller , to repair , replacement, or refund of an equitable por tion of the purchase ...

  • Bissell HS-20 - page 5

    i OPERA TION AND MAINTENANCE OF THIS EQUIPMENT INV OL VES SERIOUS RISK. IT IS THE RESPONSIBILITY OF THE USER T O MAINT AIN SAFE OPERA TING CONDITIONS A T ALL TIMES. V ARIAN ASSUMES NO LIABILITY FOR PERSONAL INJUR Y OR DAMA GE RESUL TING FR OM OPERA TION OR SER VICE OF THE EQUIPMENT . Carelessly or improperly operated equipment can cause serious inj ...

  • Bissell HS-20 - page 6

    ii SAFE INCORPORA TION OF V ARIAN DIFFUSION PUMPS INT O V A CUUM SYSTEMS IS THE RESPONSIBILITY OF THE SYSTEMS DESIGNER. T AKE APPR OPRIA TE A CTION THROUGH REDUND ANCY , AND/OR O THER SAFEGU ARDS TO PR OTECT PERSONNEL AND PR OPER TY FROM THE HAZARDS DESCRIBED BELOW AND IN THE INST ALLA TION, OPERA TION, AND MAINTENANCE INSTR UCTION MANUAL. SAFE OPE ...

  • Bissell HS-20 - page 7

    iii THE INST ALLA TION, OPERA TION, AND/OR SER VICING OR DIFFUSION PUMPS INV OL VES ONE OR MORE OF THE FOLLOWING HAZARDS , ANY ONE OF WHICH, IN THE ABSENCE OF SAFE OPERA TING PRACTICES AND PRECA UTIONS, COULD PO TENTIALL Y RESUL T IN DEA TH OR SERIOUS HARM T O PERSONNEL. Hazard Suggested Corrective Action Loss of utility: water and/or electricity P ...

  • Bissell HS-20 - page 8

    iv a. Explosion – Operation of the diffusion pump without prior and continuous e vacuation (belo w 0.5 T orr (66.5 P a)) or coolant and introducing a strong oxidiz er (such as air) or e xplosive v apors or powders or materials which ma y react with pumping fluids into a hot (abov e 300°F or 150°C) pump can cause an e xplosion. Such an explosion ...

  • Bissell HS-20 - page 9

    v Contaminate pump with e xplosive v apors, Low er explosiv e threshold of gas mixtures powders , or reactive materials Remov e, defeat, or o v err ide saf ety counter- Ov er temperature, o verpressure, more measures such as pressure and ther mal combustib le mixtures s witches and valv e sequencer inter locks Machine or weld without remo ving all ...

  • Bissell HS-20 - page 10

    vi d. P oisonous and/or Corrosive Compounds – When pumping poisonous, reactiv e, and/or corro- siv e gas, v apors, or chemicals, e ven proper operation and regener ation will not alwa ys ensure that all hazardous materials hav e been totally remov ed. If hazardous gas, vapors , chemicals, or combustib le mixtures are pumped, sufficient quantities ...

  • Bissell HS-20 - page 11

    vii i. Cold Coolant – Liquid nitrogen, a cr yogenic liquid, is used in traps . If it is splashed on body tis- sues or ey es, it can cause sev ere frostbite or blindness. The e xtremely low temperature of lique- fied nitrogen can cause skin damage similar to high temperature b ur ns. Contact with the cold gas e volving from the liquid ma y produce ...

  • Bissell HS-20 - page 12

    W ARNING _____________ High v oltages (up to 480 V) can kill. Alwa ys break the pr imar y circuit to the pow er supply before star ting to work on the heater and/or its wiring. W ARNING _____________ Diffusion pumps are typically cleaned with acetone, alcohol, or other solv ents. When heated, spra yed or e xposed to high temperature equipment, thes ...

  • Bissell HS-20 - page 13

    CA UTION ________ Acetone, alcohol, and other solv ents degrade O-ring mater ials reducing their ability to hold a v acuum. Do not use acetone or other solv ents on O-rings. If necessar y to clean O-r ings, wipe with lint-free , clean cloth, wash in detergent and w ater , or use a small amount of pump oil. W ARNING _____________ If hazardous gas, v ...

  • Bissell HS-20 - page 14

    T able of Contents Section Pag e Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i Section I – Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-1 General . . . . . . . . . . . . . ...

  • Bissell HS-20 - page 15

    List of Illustrations Figure Title Page 1-1 Speed and Throughput Cur ves – HS-20 Diffusion Pump . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1-2 Outline Dra wing – HS-20 Diffusion Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1-3 Cooling Water Connections . . . . . . . . . . . . . . . . . . . . ...

  • Bissell HS-20 - page 16

    SECTION I INST ALLA TION 1-1 GENERAL Upon receipt, inspect the container f or evidence of damage in shipment. Do not discard any e vidence of rough handling. F actor y packing pro vides for maxim um protection during shipment. How ev er , the pump should be inspected immediately and any damage should be repor ted to the carrier without delay . Bef ...

  • Bissell HS-20 - page 17

    Installation 1-2 1-3 PHYSICAL SPECIFICA TIONS (See Figure 1-2) Flange dimensions (inches): Figure 1-1. Speed and Throughput Curves – HS-20 Diffusion Pump ASA ISO 630k ISO 160k Inlet Foreline Inlet Foreline OD 27.50 9.0 27.17 7.09 ID 21.25 5.06 21.25 5.06 Thickness 1.12 0.75 0.78 0.47 Bolt Circle 25.0 7.5 No . of Holes 20.0 8.0 Size of Holes 1.25 ...

  • Bissell HS-20 - page 18

    Installation 1-3 Figure 1-2. Outline Drawing – HS-20 Diffusion Pump, with ASA Flanges ...

  • Bissell HS-20 - page 19

    Installation 1-4 1-4 UNP A CKING Pumps are f actor y-packaged to permit prolonged storage in suitably protected areas without special precautions. W ARNING _____________ When lifting some V arian diffusion pumps, use power-assisted equip- ment and trained mo ving/installation personnel to av oid dropping, slip- ping, and/or ov er tur ning the pump ...

  • Bissell HS-20 - page 20

    Installation e. Remov e all traces of the cleaning fluid by carefully drying with clean, dr y , oil-free compressed air . f . F or reassembly , rev erse the abov e procedure. g. Clean the flanges and O-ring groov es thoroughly with acetone or alcohol, using clean, lint free rags . 1-5 W ARNING _____________ Diffusion pumps are typically cleaned wit ...

  • Bissell HS-20 - page 21

    Installation 1-6 W ARNING Utility f ailure can cause damage to the equipment, ov erheating, and possible e xplosions. Designers of the equipment using diffusion pumps must design their system to protect personnel and proper ty from possi- ble hazards . 1-6 UTILITY AND SYSTEM CONNECTIONS 1-6-1 Safety Considerations and Interlocks a. Large pumps are ...

  • Bissell HS-20 - page 22

    Installation 1-7 The cooling water discharge should, if possib le, be connected to an open drain so that cooling water flo w can readily be check ed. The temperature of the discharged cooling water should not e xceed 130°F (54°C). b . The quick-cool coil at the boiler plate m ust be connected to an open drain and the feed line controlled by a sep ...

  • Bissell HS-20 - page 23

    Installation 1-8 1-6-4 Electrical Connections (See Figure 1-4 and 1-5, Diffusion Pump Wiring Diagr am) W ARNING _____________ High v oltages (up to 480V) can kill. Alwa ys break the pr imar y circuit to the pump bef ore star ting to wor k on the heater and/or its wiring. a. The pump heater has been designed to operate at a cer tain voltage . Check ...

  • Bissell HS-20 - page 24

    Installation 1-9 Figure 1-4. 200/240/400/430/440/480 V Wiring Diagram – HS-20 Diffusion Pump ...

  • Bissell HS-20 - page 25

    Installation 1-10 Figure 1-5. 380/415 V Wiring Diagram – HS-20 Diffusion Pump ...

  • Bissell HS-20 - page 26

    Installation 1-11 W ARNING _____________ Pumps and their components are designed f or vacuum service; they are not designed to be pressurized which could cause them to burst possibly e xpelling shrapnel at lethal velocities . Serious accidents hav e been caused by intentional pressurization of v acuum systems and their components. Ne ver pressurize ...

  • Bissell HS-20 - page 27

    Installation a. The recommended fluid charge for the pump is fiv e U . S. quar ts. The fluid charge will gradually be depleted through use, b ut the pump will continue to operate normally . When the charge is reduced to appro ximately 60% of the initial amount, the boiler temperature ma y begin to rise and under this condition the ther mal s witch ...

  • Bissell HS-20 - page 28

    2-1 SECTION II OPERA TION During initial installation, the newly installed pump fluid ma y be subjected to a degassing process. This ma y result in foreline pressure fluctuations and "b ursts". Such fluctuations are considered nor mal. 2-1 ST ART -UP PR OCEDURE a. Ev acuate the diffusion pump by means of the mechanical roughing pump to a ...

  • Bissell HS-20 - page 29

    Operation 2-2 a. Switch off the pow er to the diffusion pump heaters. b . Admit cooling water to the quic k-cool coil if necessar y and continue to circulate it until the pump body just abov e the boiler heat shield can be touched (approximately 130°F or 54°C). In v alved systems which ha ve tight inlet and f oreline connections, it is possible t ...

  • Bissell HS-20 - page 30

    3-1 SECTION III MAINTENANCE 3-1 GENERAL Diffusion pumps generally require little attention when correctly operated. How e ver , it is advisable to perf or m some periodic checks to insure continued troub le-free operation. By simple pre v entive main- tenance, costly do wn-time and cleaning procedures can be av oided. A day-to-da y log of pump and ...

  • Bissell HS-20 - page 31

    Maintenance 3-2 c. When the pump is cold, chec k that the heaters are bolted snugly to the boiler plate and that all heater ter minal connections are tightly f astened inside the junction box. d. Check the total heater input and balance of load if a m ulti-phase heater is used. e. Check to insure that cooling w ater flow is unobstructed and not bel ...

  • Bissell HS-20 - page 32

    Maintenance 3-3 a. Disconnect all water cooling lines and break the primar y circuit supplying power to the pump heaters. b . Unbolt the inlet and f oreline connections and remov e the pump from the system. c. Drain the pump of all fluid. d. Remov e the cold cap and jet assembly f ollowing the procedures outlined. e. Thoroughly clean the pump body ...

  • Bissell HS-20 - page 33

    Maintenance 3-4 Figure 3-1. External Fittings – Cold Cap Assembly NO TE ________ Customer to supply water tubing to be connected to coupling with FPT threads shown abo ve . ...

  • Bissell HS-20 - page 34

    Maintenance 3-5 JET ASSEMBL Y The HS-20 jet assembly consists of se veral subassemb lies. The lower jet assemb ly consists of the jet base and stages 3 and 4. A jet shield is provided f or the third stage jet. The second stage jet is secured to the central tube and f or ms a subassembly . A shield is provided f or the second stage jet. The top of t ...

  • Bissell HS-20 - page 35

    Maintenance 3-6 Figure 3-2. 20-inch Jet Assembly ...

  • Bissell HS-20 - page 36

    Maintenance 3-7 3-5-3 Reassembling the Lo wer Jet Assembly a Carefully replace the four th stage jet on the jet base. b Replace the third stage jet shield. c Replace and tighten the secur ing screws between the third and f our th stage jets. 3-5-4 Reassembling the Jet Assembl y NO TE ________ Bef ore completing the follo wing step , check that the ...

  • Bissell HS-20 - page 37

    Maintenance 3-8 Figure 3-3 Jet Coupling Note: If the jet coupling loosens from the jet rod during disassembly , position it so that the top of the jet coupling is flush with the bottom of the orifice plug. ...

  • Bissell HS-20 - page 38

    Maintenance 3-9 Figure 3-4. Heater Element Assembly NO TE ________ Tighten clamping nuts to 250 in.-lbs . ...

  • Bissell HS-20 - page 39

    Maintenance 3-10 1 Deter mine which heater element has failed at the junction bo x, then disconnect the two corre- sponding leads from the ter minal strip. Pull the leads out of the ter minal box then out the elbow co ver plate . 2 Remov e the heater cov er from the bottom of the diffusion pump . Mov e the insulation to e xpose the faulty heater(s) ...

  • Bissell HS-20 - page 40

    Maintenance 3-11 3-7 REPLA CEABLE P AR TS The f ollowing is a list of replaceab le par ts f or the V ar ian HS-20 Diffusion Pump . Part Number Description 84358301 Cold cap assembly (includes No .10-32 SST Rd Hd screw and No . 10-32 hex nut) SST 660811494 Cold cap gasket (see Figure 3-2) F2622001 Cold cap f ollower (br ass) 75786001 Cold cap nut 62 ...

  • Bissell HS-20 - page 41

    Maintenance 3-12 ...

  • Bissell HS-20 - page 42

    4-1 SECTION IV TROUBLESHOO TING 4-1 LEAKA GE Analysis of general operational e xper ience with diffusion pumps indicates that cer tain locations are more prone to the incidence of leaks. The f ollowing locations should be chec ked first if leakage is the suspected cause of poor system perf or mance. a. Inlet and f oreline connections. b . Drain and ...

  • Bissell HS-20 - page 43

    T roubleshooting 4-2 Table 4-1 Troubleshooting (Cont’d) Fault Probable Cause Corrective Action P oor ultimate Contaminated pump fluid Examine and clean pump; pressure replace fluid. Low heat input Check v oltage. Check f or continuity , bur ned-out element, poor ther mal contact. Inadequate cooling water flo w Chec k water pressure. Check tubing ...

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