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Installation
5 Installation
5.1 Establishing the vacuum connection
Risk to life due to electric shock
An improperly earthed product is potentially fatal in the event of a fault.
► Connect the product galvanically with the earthed vacuum chamber.
► Ensure that the connection complies with the requirements of a protective bonding according to
► Use electrically conductive centering rings and circlips for KF connections.
Risk to life due to electric shock
If no earth connection is established, voltage flows become hazardous to the touch and could lead to
electronic components sustaining damage.
► Always tighten the electronic unit with the grub screw.
► Ensure that the grub screw of the electronic unit has been tightened correctly.
Risk of injury resulting from overpressure in the vacuum system
Opening tensioning pieces with an overpressure > 1000 hPa in the vacuum system can lead to inju-
ries as a result of flying parts, and escaping process medium could prove harmful to health.
Elastomer seals in KF connections (e.g. O-rings) are not resistant to pressures > 2500 hPa. This
could prove harmful to health due to escaping process medium.
► Do not open any tensioning pieces when overpressure is prevalent in the vacuum system.
► Use suitable tensioning pieces for overpressure.
► Use tensioning pieces which can only be opened and closed using a tool (e.g. tightening strap-
► Use sealing rings with an outer centering ring.
Impairment from contamination and damage
Touching the devices or components with bare hands increases the desorption rate and leads to in-
correct measurements. Dirt (e.g. dust, fingerprints, etc.) and damage impair the function.
► When working on high or ultra high vacuum systems, always wear clean, lint-free and powder-
► Only use clean tools.
► Make sure that the connection flanges are free of grease.
► Remove protective caps and protective covers from flanges and connections only when necessa-
► Carry out all work in a well lit area.
Prerequisites
● Appropriate ambient conditions
● Operating temperature within permissible range
● Adequate room available for electrical connection (e.g. permissible bending radii for cables)
18/42
DANGER
EN 61010. (CF and VCR connections comply with this requirement.)
DANGER
WARNING
circlip).
free laboratory gloves.
ry.
NOTICE
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