Bissell HS-20 instruction manual

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SAFE INCORPORATION OF VARIAN DIFFUSION PUMPS INTO VACUUM SYSTEMS IS THE RESPONSIBILITY OF THE SYSTEMS DESIGNER. TAKE APPROPRIATE ACTION THROUGH REDUNDANCY, AND/OR OTHER SAFEGUARDS TO PROTECT PERSONNEL AND PROPERTY FROM THE HAZARDS DESCRIBED BELOW AND IN THE INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTION MANUAL. SAFE OPERATION IS THE RESPONSIBILITY OF THE USING ORGANIZATION AND ITS PERSONNEL. READ THE INSTRUCTION MANUAL AND UNDERSTAND HOW TO AVOID HAZARDS PRIOR TO OPERATING THE DIFFUSION PUMP. ALL PERSONS WHO WORK WITH OR ARE EXPOSED TO DIFFUSION PUMPS OR EQUIPMENT WHICH UTILIZES SUCH PUMPS OR DIFFUSION PUMP FLUID MUST TAKE PRECAUTIONS TO PROTECT THEMSELVES AGAINST POSSIBLE SERIOUS BODILY INJURY OR DEATH. DO NOT BE CARELESS AROUND SUCH PRODUCTS.

THESE SHEETS AND THE INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS CAN HELP YOU TO OPERATE THIS PUMP SAFELY AND EFFICIENTLY. READ THEM. SPECIAL OPERATING CONSIDERATIONS AND PRECAUTIONS WILL BE FOUND IN THE OPERATION INSTRUCTIONS. UNINFORMED OR CARELESS OPERATION OF THIS PUMP CAN RESULT IN POOR PERFORMANCE, DAMAGE TO THE PUMP OR OTHER PROPERTY, SERIOUS BODILY INJURY, AND POSSIBLE DEATH.

USERS OF THIS EQUIPMENT SHOULD BE ALERT TO TWO LEVELS OF HAZARDS IDENTIFIED BY THE FOLLOWING SYMBOLS:

WARNING

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Warnings are used when failure to observe instructions or precautions could result in injury or death to humans.

CAUTION

Cautions are used when failure to observe instructions could result in significant damage to equipment and/or facilities.

Designers of systems which utilize diffusion pumps must design out hazards wherever possible; pro- vide guards, safety features, and interlocks for hazards which cannot be designed out; warn with respect to hazards which cannot be designed out and which remain after utilizing guards, safety fea- tures, and interlocks; and lastly, provide procedures and instructions on proper use, servicing, etc., so as to minimize risk.

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Contents HS-20 Diffusion Pump Sales and Service Offices Telephone Numbers Warranty Warranty Replacement and AdjustmentPage Page Iii Prohibited Action Explosion-Causing Condition Prohibited Action Result Page Vii Page Page Table of Contents Section Safety Considerations Section I InstallationList of Illustrations List of TablesInstallation General Operating Specifications See FigureModel Technical Specifications ASA Outline Drawing HS-20 Diffusion Pump, with ASA Flanges Cleaning a NEW Pump UnpackingInstallation Vacuum Connections Safety Considerations and InterlocksUtility and System Connections Cooling Water Connections See FigureCooling Water Connections Thermal Switches Initial Vacuum Test240/400/430/440/480 V Wiring Diagram HS-20 Diffusion Pump 415 V Wiring Diagram HS-20 Diffusion Pump Adding Pump Fluid Sight Glass Assembly START-UP Procedure OperationShutdown Procedure OperationMaintenance General Periodic InspectionMaintenance CleaningDisassembling and Reassembling the Cold CAP Refer to Figure Do not overtighten the screwExternal Fittings Cold Cap Assembly JET Assembly Disassembling the Jet Assembly Refer to FigureDisassembling the Lower Jet Assembly Inch Jet Assembly Maintenance Reassembling the Lower Jet Assembly Reassembling the Jet AssemblyHeater Replacement Jet Coupling Tighten clamping nuts to 250 in.-lbs Maintenance Replaceable Parts Maintenance Troubleshooting Leakage OutgassingPoor Pump or System Performance Troubleshooting