Varian 956 Manuals

Varian 956 Manuals

Manuals and User Guides for Varian 956. We have 1 Varian 956 manual available for free PDF download: Installation, Operation And Maintenance Instructions

Varian 956 Installation, Operation And Maintenance Instructions

Varian 956 Installation, Operation And Maintenance Instructions (181 pages)

PORTABLE TURBO LEAK DETECTOR

Brand: Varian | Category: Security Sensors | Size: 12.18 MB

Table of Contents

Safety Considerations
8
Table of Contents
14
Section I
22
- Introduction
  22
Varian's Universal Test Fixture Mounted on the Leak Detector with
23
Utilization of a "Power Probe
23
Test Piece Sealed with Helium or Tracer Gas; Bell Jar Used to Determine
24
- Total Leak Rate
  24
- The CRT Is Hooded to Insure the Integrity of the Entire Tube
  24
Test Piece Evacuated; Tracer Gas Spray Probe Used to Locate Leak
25
Test Piece Evacuated and Hooded with Helium Atmosphere to Determine
25
- Overall Leak Rate
  25
Test Piece Pressurized; Detector Probe Used to Locate Leak
25
Magnetic Separation Principle
26
Decimal Notation
28
Glossary of Terms
29
Scope
30
Description
30
Specifications
30
Modules
31
Varian 956 Leak Detector
31
Vacuum System
32
- Mechanical Pumps
  32
- Spectrometer Tube
  32
- Turbo Pump
  34
- Turbo V-80 Controller
  34
Optional Equipment 2-1
36
- Remote Controller Option
  36
Electronics
36
- Accessory Output Connectors
  36
- Connector Jll, Serial Interface, RS232C
  38
Command Mode Codes
40
Byte Definitions
41
List of Menus
43
- Receiving and Installation
  44
Front Panel Controls
43
Menu Descriptions
43
Unpacking the 956 Leak Detector
44
Description
44
Unpacking Instructions
44
Services Required for Operation
45
Preparation for Operation
45
Installation
45
Leveling the Leak Detector
45
Leak Detector Installation Connections
46
Storage
47
Section IV Operation
48
General
48
Startup and Shutdown Procedures
48
- Startup
  48
- Shutdown
  49
- Moving the Leak Detector
  49
- Special Operating Instructions
  49
Levels of Operation
50
System Valve Operation
54
- Valve Designations and Functions
  54
- Vacuum Modes
  54
Valve Truth Table
55
Vacuum System in the Gross Leak Test Mode
61
- Vacuum System in the Fine Test Mode
  62
- Vacuum System in the System Ready or Hold Mode
  63
Front Panel Controls
64
- Right-Side Control Key Functions
  64
Front Panel Controls, 956 Leak Detector
65
- Left-Side Control Key Functions
  66
- Second Function Key Definitions
  67
List of Menus
69
Menu Descriptions
69
Maintenance Actions to Perform
96
Section V Maintenance, Repair, and Calibration
96
Scope
96
Scheduled Maintenance
97
- Manual Tuning
  97
- Weekly
  98
- Semi-Annually
  99
Fore Pump Flush and Oil Change
101
Unscheduled Maintenance
103
Spectrometer Tube Exploded View
108
- Cleaning the Spectrometer Tube
  109
- Assembly of the Spectrometer Tube
  110
- Vacuum System Removal
  112
- Disassembly of Calibrated Leak
  112
Exploded View of the Main Components of the Vacuum System
114
- Cleaning the Vacuum Manifold
  115
Calibrated Leak Exploded View
115
Exploded View of Vacuum Manifold
117
Exploded View of Test Port
118
- Assembly of Vacuum Manifold
  119
- Assembly of the Calibrated Leak
  120
- Installation of the Vacuum System
  121
- Cleaning the Turbo Pump
  122
- Re-Iubricating the Turbo Pump
  123
- Disassembly of the Isolation Valve
  125
- Assembly of the Isolation Valve
  125
Exploded View of Isolation Valve
125
Calibration
126
- System Thermocouple TC2 Calibration
  126
- Test Port Thermocouple TC1 Calibration
  126
- Zeroing Ranges
  126
- Ion Source Tuning
  126
- Checking Tolerable Forepressure
  126
- Turbo Speed Vs Sensitivity
  127
- Gross Leak Calibration
  127
- Control Board Calibration
  128
Section VI Troubleshooting
132
General
132
Troubleshooting Symptoms
132
Error Messages
135
- Spec Tube Rough Error
  135
- Spec Tube Pressure Burst
  135
- Pressure Burst
  136
- System over Pressure
  136
- System Pressure Wait
  136
- System Pressure Timeout
  136
- Ion Gauge Pressure Wait
  136
- Ion Gauge Time out
  136
- Filament #1 Burned out
  137
- Filament #2 Burned out
  137
- Test Port over Pressure
  137
- Xfer Pressure Wait
  138
- Gain too High
  138
- Gain too Small
  138
- No Helium Peak
  138
- Too Many Peaks
  139
Detailed Troubleshooting
139
- Leak Symptoms
  139
- Leak-Checking the Leak Detector (Small Leaks)
  139
- Leak-Checking the Leak Detector (Large Leaks)
  139
- Valve Check
  140
- Ion Source Check
  141
- Preamplifier Check
  141
- Test Port Thermocouple Gauge (TC1) Check
  142
- System Thermocouple Gauge (TC2) Check
  142
Ion Source Connector
143
Electronics Troubleshooting
144
Power-Up Sequence
147
Part Number Column
148
Description Column
148
Abbreviations
148
Units Per Assembly Column
148
Illustrations
149
How to Order Parts
149
Factory-Installed Options
149
Schematic Diagrams
158

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