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Manuals
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Varian Manuals
Security Sensors
956
Installation, operation and maintenance instructions
Varian 956 Installation, Operation And Maintenance Instructions
Portable turbo leak detector
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Safety Considerations
Table of Contents
Section I
Introduction
Varian's Universal Test Fixture Mounted on the Leak Detector with
Utilization of a "Power Probe
Test Piece Sealed with Helium or Tracer Gas; Bell Jar Used to Determine
Total Leak Rate
The CRT Is Hooded to Insure the Integrity of the Entire Tube
Test Piece Evacuated; Tracer Gas Spray Probe Used to Locate Leak
Test Piece Evacuated and Hooded with Helium Atmosphere to Determine
Overall Leak Rate
Test Piece Pressurized; Detector Probe Used to Locate Leak
Magnetic Separation Principle
Decimal Notation
Glossary of Terms
Scope
Description
Specifications
Modules
Varian 956 Leak Detector
Vacuum System
Mechanical Pumps
Spectrometer Tube
Turbo Pump
Turbo V-80 Controller
Optional Equipment 2-1
Remote Controller Option
Electronics
Accessory Output Connectors
Connector Jll, Serial Interface, RS232C
Command Mode Codes
Byte Definitions
List of Menus
Receiving and Installation
Front Panel Controls
Menu Descriptions
Unpacking the 956 Leak Detector
Description
Unpacking Instructions
Services Required for Operation
Preparation for Operation
Installation
Leveling the Leak Detector
Leak Detector Installation Connections
Storage
Section IV Operation
General
Startup and Shutdown Procedures
Startup
Shutdown
Moving the Leak Detector
Special Operating Instructions
Levels of Operation
Operation Using Levell Keys
Operation Using Level 2 Keys
Operation Using Level 3 Keys
System Valve Operation
Valve Designations and Functions
Vacuum Modes
Valve Truth Table
Vacuum System in the Gross Leak Test Mode
Vacuum System in the Fine Test Mode
Vacuum System in the System Ready or Hold Mode
Front Panel Controls
Right-Side Control Key Functions
Front Panel Controls, 956 Leak Detector
Left-Side Control Key Functions
Second Function Key Definitions
List of Menus
Menu Descriptions
Maintenance Actions to Perform
Section V Maintenance, Repair, and Calibration
Scope
Scheduled Maintenance
Manual Tuning
Weekly
Semi-Annually
Fore Pump Flush and Oil Change
Unscheduled Maintenance
Purging (Gas Ballasting) the Forepump or Rough Pump
System Thermocouple Gauge (TC2) Cleaning/Replacement
Test Port Thermocouple Gauge (TC1) Cleaning/Replacement
Ion Source Replacement
Spectrometer Tube Exploded View
Cleaning the Spectrometer Tube
Assembly of the Spectrometer Tube
Vacuum System Removal
Disassembly of Calibrated Leak
Exploded View of the Main Components of the Vacuum System
Cleaning the Vacuum Manifold
Calibrated Leak Exploded View
Exploded View of Vacuum Manifold
Exploded View of Test Port
Assembly of Vacuum Manifold
Assembly of the Calibrated Leak
Installation of the Vacuum System
Cleaning the Turbo Pump
Re-Iubricating the Turbo Pump
Disassembly of the Isolation Valve
Assembly of the Isolation Valve
Exploded View of Isolation Valve
Calibration
System Thermocouple TC2 Calibration
Test Port Thermocouple TC1 Calibration
Zeroing Ranges
Ion Source Tuning
Checking Tolerable Forepressure
Turbo Speed Vs Sensitivity
Gross Leak Calibration
Control Board Calibration
Section VI Troubleshooting
General
Troubleshooting Symptoms
Error Messages
Spec Tube Rough Error
Spec Tube Pressure Burst
Pressure Burst
System over Pressure
System Pressure Wait
System Pressure Timeout
Ion Gauge Pressure Wait
Ion Gauge Time out
Filament #1 Burned out
Filament #2 Burned out
Test Port over Pressure
Xfer Pressure Wait
Gain too High
Gain too Small
No Helium Peak
Too Many Peaks
Detailed Troubleshooting
Leak Symptoms
Leak-Checking the Leak Detector (Small Leaks)
Leak-Checking the Leak Detector (Large Leaks)
Valve Check
Ion Source Check
Preamplifier Check
Test Port Thermocouple Gauge (TC1) Check
System Thermocouple Gauge (TC2) Check
Ion Source Connector
Electronics Troubleshooting
Power-Up Sequence
Part Number Column
Description Column
Abbreviations
Units Per Assembly Column
Illustrations
How to Order Parts
Factory-Installed Options
Schematic Diagrams
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sales@artisantg.com
artisantg.com
(217) 352-9330 |
|
Visit our website - Click HERE
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Table of Contents
Troubleshooting
SECTION VI TROUBLESHOOTING
132
Too many peaks
139
Electronics Troubleshooting
144
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Summary of Contents for Varian 956
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sales@artisantg.com artisantg.com (217) 352-9330 | Visit our website - Click HERE...
Page 2
www.idealvac.com (505)872-0037...
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