Bissell HS-20 instruction manual Tighten clamping nuts to 250 in.-lbs

Page 38

Maintenance

Figure 3-4. Heater Element Assembly

NOTE

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Tighten clamping nuts to 250 in.-lbs.

3-9

Image 38

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 TablesModel Technical Specifications Installation GeneralOperating Specifications See Figure 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 Disassembling the Lower Jet Assembly JET AssemblyDisassembling the Jet Assembly Refer to Figure Inch Jet Assembly Heater Replacement Maintenance Reassembling the Lower Jet AssemblyReassembling the Jet Assembly Jet Coupling Tighten clamping nuts to 250 in.-lbs Maintenance Replaceable Parts Maintenance Poor Pump or System Performance Troubleshooting LeakageOutgassing Troubleshooting