vacuum technologies Thermocouple Gauge and Octal Cable Replacement for VS
Series Leak Detectors Part Number 699909999
NOTICE: This document contains references to Varian.
Please note that Varian, Inc. is now part of Agilent Technologies. For more information, go to www.agilent/chem.
Varian Field Instruction Sheet
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Document No.
Revision Page 1 of 8Thermocouple Gauge and Octal Cable Replacement for VS Series Leak Detectors
Preface
Documentation Standards
This manual uses the following documentation standards:
NOTE Notes contain important information.
CAUTION Cautions appear before instructions, which if not followed, could cause damage to
the equipment or data loss.
WARNING Warnings appear for a particular procedure or practice which, if not followed
correctly, could lead to serious injury or death.
Hazard and Safety Information
The common international symbols used in this manual and on the equipment are defined below.
OFF Supply (Power)Earth (Ground) Terminal ON Supply (Power)Caution, Hot Surface
AC – Alternating Current Caution, Risk of Electrical
Shock
Warning, Risk of danger
Protective Conductor Terminal Frame or chassis Terminal
°l Thermocouple Gauge and Octal Cable Replacement for VS Series Leak Detectors 699909999A
Document No.Revision
Thermocouple Gauge and Octal Cable Replacement for VS Series Leak Detectors
Page 2 of 8Operators and service personnel must be aware of all hazards associated with this equipment. They must know how to recognize hazardous and potentially hazardous conditions, and know how to avoid them. The consequences of
《机械设计》unskilled, improper, or careless operation of the equipment can be serious. Every operator or service person must read and thoroughly understand operation/maintenance manuals and any additional information provided by Varian. All warning and cautions must be read carefully and strictly observed. Consult local, state, and national agencies
regarding specific requirements and regulations. Address any safety, operation, and/or maintenance questions to your nearest Varian office.
Solvents
WARNING The mechanical components of leak detectors may be cleaned with one of the
recommended solvents. When heated, sprayed, or exposed to high-temperature
equipment, these solvents become flammable and explosive, causing serious
injury or death. Do not use these solvents near a high-temperature source. Ventilate
the working area with a blower and work in a large, well-ventilated room.
Solvents are irritants, narcotics, depressants and/or carcinogens. Their inhalation
and/or ingestion may produce serious side effects. Prolonged or continued contact
with the skin results in absorption through the skin and moderate toxicity. Always
ensure that cleaning operations are carried out in large, well-ventilated rooms, and
wear eye shields, gloves, and protective clothing.
Due to the effective cleaning nature of VacuSolv solvent and its residue-free
properties, Varian’ Component and Spectrometer Cleaning Kit (Part Number
670029096), used in accordance with the kit instructions, is recommended for
cleaning spectrometer components. The kit can also be used for fine cleaning of
other parts in the leak detector’s vacuum system such as valves and fittings. No
rinsing steps or high-temperature drying is required following cleaning with
VacuSolv. Although appropriate precautions are advised, VacuSolv is compatible
with most materials and does not contain toxic chemicals or CFCs
(chlorofluorocarbons). Other acceptable solvents are isopropyl alcohol (IPA) or
Dow Corning ® OS-20.
To clean the leak detector plastic enclosure, the LCD display and Front Panel
buttons, use only a soft cloth slightly dampened with water or a mild soap.利率敏感性
缺口 Do NOT use excess water or cleaning solvents of any kind.
Avoid splashing any cleaning solvents into the unit through the ventilation
openings or Front Panel buttons. Wipe the surface with a dry lint-free cloth.
f-22p
Vacuum Equipment and Cleanliness
Cleanliness is vital when servicing the leak detector or any vacuum equipment. There are some techniques that are more important in leak detector servicing than in general vacuum work:
CAUTION Wear non-powdered, ESD-safe Nitride or equivalent gloves to prevent skin oils from
getting on spectrometer internal components.
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Revision Thermocouple Gauge and Octal Cable Replacement for VS Series Leak Detectors
Page 3 of 8O-ring Care
When removing, checking or replacing O-rings, keep in mind the following:
NOTE Varian recommends replacing all O-rings during routine maintenance or during any
maintenance procedure requiring that O-rings be removed.
CAUTION Remove O-rings carefully with your fingers. Do not use metal tools for this task; this
prevents scratching of any sealing surfaces.
•
Wipe all O-rings clean with a lint-free cloth before installation to ensure that no foreign matter is present to impair the seal.•
Do not use grease or any other substance on O-rings that will come in contact with the vacuum surfaces.•
Do not use alcohol, methanol or other solvents on O-rings. Doing so causes deterioration and reduce
s their ability to hold a vacuum.•Varian does not recommend the use of vacuum grease. If applicable, apply a
small amount of Apiezon ®L grease and wipe the O-rings shiny dry.
Metal Seal Care
CAUTION Metal Seals must be replaced any time a spectrometer is opened. All fasteners must
be installed and torqued per assembly procedure specifications. Remove Metal
Seals carefully with your fingers or a soft tool. Metal tools scratch sealing surfaces.
•Metal Seals are supplied in pre-cleaned condition. No cleaning is required. If
necessary, Metal Seals can be cleaned using the recommended solvents. Wipe桃花心木
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Metal Seals clean with a lint-free cloth before installation to ensure that no for-
eign matter impairs the seal.
•
Do not use grease or any other substance on Metal Seals that will come in con-
tact with the spectrometer.Spectrometer
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实录CAUTION Store the Ion Source/Preamplifier sub-assembly in a cool, dry area in a tightly
sealed, ESD protected container. Wear non-powdered, ESD-safe Nitride or
equivalent gloves when handling the spectrometer. Wash hands thoroughly after
handling the spectrometer filaments and especially before smoking or eating.
The spectrometer and PCB’s are static sensitive devices. Wear a grounding strap
when performing any maintenance on these units and especially when performing
maintenance of static sensitive parts.
CAUTION The spectrometer operates at a very high vacuum produced by the high vacuum
turbomolecular pump. Service of the spectrometer requires that this vacuum be
vented to the atmosphere.
Equipment Required
•Extended Length M5 Allen Wrench
•Metric Allen Wrench Set
Installation Procedure
For clarity, some items have been omitted from views.
Figure 1: Rear and Front Cover Screws
WARNING Disconnect power from the unit before performing any maintenance procedure that requires physically disconnecting any part of the system.
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1.Turn off the power switch located on the back of the unit and unplug.
2.Wait 30 seconds for the high voltage to dissipate.
3.Using an extended length M5 Allen wrench, remove the four screws holding the rear plastic cover (Figure 1: Rear
and Front Cover Screws) and detach the rear plastic cover from the unit.
4.Remove the four screws holding the front plastic cover and detach the cover from the unit. Two screws are situated
at the front of the unit (not shown) and two screws are positioned inside the unit (Figure 1: Rear and Front Cover Screws).
Thermocouple Gauge and Octal Cable Replacement for VS Series Leak Detectors Page 4 of 8
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