Bissell instruction manual HS-20 Diffusion Pump

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Varian Vacuum Technologies

121 Hartwell Avenue

Lexington, MA 02421

(781)861-7200

HS-20 Diffusion Pump

Instruction Manual

Manual No. 6999-01-120

Revision G

October 2000

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Contents HS-20 Diffusion Pump Sales and Service Offices Telephone Numbers Warranty Replacement and Adjustment WarrantyPage Page Iii Prohibited Action Explosion-Causing Condition Prohibited Action Result Page Vii Page Page Section Safety Considerations Section I Installation Table of ContentsList of Tables List of IllustrationsOperating Specifications See Figure Installation GeneralModel Technical Specifications ASA Outline Drawing HS-20 Diffusion Pump, with ASA Flanges Unpacking Cleaning a NEW PumpInstallation Utility and System Connections Safety Considerations and InterlocksVacuum Connections Cooling Water Connections See FigureCooling Water Connections Initial Vacuum Test Thermal Switches240/400/430/440/480 V Wiring Diagram HS-20 Diffusion Pump 415 V Wiring Diagram HS-20 Diffusion Pump Adding Pump Fluid Sight Glass Assembly Operation START-UP ProcedureOperation Shutdown ProcedurePeriodic Inspection Maintenance GeneralCleaning MaintenanceDo not overtighten the screw Disassembling and Reassembling the Cold CAP Refer to FigureExternal Fittings Cold Cap Assembly Disassembling the Jet Assembly Refer to Figure JET AssemblyDisassembling the Lower Jet Assembly Inch Jet Assembly Reassembling the Jet Assembly Maintenance Reassembling the Lower Jet AssemblyHeater Replacement Jet Coupling Tighten clamping nuts to 250 in.-lbs Maintenance Replaceable Parts Maintenance Outgassing Troubleshooting LeakagePoor Pump or System Performance Troubleshooting