LEYBOLD Trivac D8A - Page 73

LEYBOLD Trivac D8A

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Table of Contents

Safety Precautions3
Table of Contents4
List of Figures5
List of Tables5
Identification Plate6
Manual Key6
Model and Catalog Numbers6
Section 1 -Introduction6
Direct Drive Mechanism7
Pumping Mechanism7
- High Vacuum Stage Pump Cylinder7
Section 2 - Principles of Operation7
Gas Ballast Mechanism8
- Second Stage Pump Cylinder8
- Opening and Closing the Valve8
Lubricating Fluid10
Anti-Suck Back Mechanism11
Receiving11
Reporting Shipping Damage/Shortage11
Section 3 - Preparing and Installing the Pump11
Connecting the Pump to the System12
- Reporting Incorrect Shipment12
Initial Filling with Lubricating Fluid12
Making the Electrical Connection13
Section 4 - Starting, Operating, and Maintaining the Pump13
- Checking the Direction of Rotation13
Start-Up13
- Using the Gas Ballast Valve During Pump Warm-Up13
Operation14
Preventative Maintenance14
- Checking the Lubricating Fluid Level14
  - Technical Data15
  - Changing the Pump Fluid15
- Changing the Lubricating Fluid15
- Checking the Pump Fluid for Contamination16
- Long Term Storage16
- Checking the Dirt Trap16
- Avoiding Oil Leaks During Shipping and Storage16
- Module Replacement Procedure17
Required Materials and Tools17
Section 5 - Disassembly, Cleaning, and Assembly Instructions17
- 5-A-2 Required Tools17
Removing the Module from the Pump18
- Assembled Pump19
- Disassembling the Module20
- Module Attached to Coupling Housing20
- Module, Side View21
- Front End of Module Minus Coupling and Centrifugal Switch22
- Rear End of Module Minus the Disk23
- Removing the Cylindrical Pins from the Module23
Disassembling the Remaining Parts25
- High Vacuum Stage Rotor Removed from the Shaft25
- Miscellaneous Disassembled Parts27
- D4A Module Showing Retaining Bracket and Valve Plate28
- Removing the Radial Shaft Seal from the End Plates28
- Coupling Housing and Motor29
- Removing the Valve Stop and Plate29
- Cleaning and Inspecting the Disassembled Pump30
- Removing the Oil Level Glass from the Coupling Housing30
- 5-E-2 Instructions for Cleaning and Inspecting All Pump Models31
- 5-E-L Special .For Service Pumps31
- Special Requirements for Extreme-Corrosive Service Pumps31
Reassembling the Pump32
- Rotor, Bearing, Shaft and Vane Critical Dimensions33
- Disassembled Motor35
- Parts Required for Installing the Rotational Lock Bearing35
- Rotors/Shaft/Center Bearing Plate Assembly38
- Driving Long Cylindrical Pins Aligning HV Cylinder and Center Bearing39
- Pulling Second Stage Pump Cylinder Tight against the Center Bearing41
- Driving Short Cylindrical Pins Aligning Rear End Plate and HV Cylinder42
- Install the Radial Shaft Seal into the Front End Plate43
- Reassembling the Module to the Coupling Housing45
Section 6 - Troubleshooting46
- Troubleshooting Contents46
- Troubleshooting Chart47
- Parts List Contents57
Section 7 - Parts List57
- Disassembled Pump58
- Spare Modules, Gasket Sets and Repair Kits59
- Complete List of Parts60
- Exploded Isometric Drawing74

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