Bissell HS-20 instruction manual

Page 13

WARNING

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If hazardous gas, vapors, chemicals, or combustible mixtures are pumped, sufficient quantities may exist during operation. This pump may contain decomposed and/or overheated pump oils or poisonous and/or corrosive process materials which are highly toxic and also can be an asphyxiant. Proper operation will not always ensure that all haz- ardous materials have been removed.

WARNING

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Hot oils can cause serious burns. Wear protective gloves and long sleeved, loose fitting, heat resistant garments when draining pump oil.

WARNING

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When lifting some Varian diffusion pumps, use power-assisted equipment and trained moving/installation personnel to avoid dropping, slipping, and/or overturning the pump and severely injuring personnel. Check weight of equipment before lifting and do not stand under equipment being moved.

CAUTION

Acetone, alcohol, and other solvents degrade O-ring materials reducing their ability to hold a vacuum. Do not use acetone or other solvents on O-rings. If necessary to clean O-rings, wipe with lint-free, clean cloth, wash in detergent and water, or use a small amount of pump oil.

NOTE

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Always dispose of used or dirty oil properly and in compliance with all local, state, and federal environmental laws and regulations.

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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
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