MKS Granville-Phillips 203 Series, Инструкция по эксплуатации

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Series 203 Variable Leak Valve Installation and Operating Instructions
1
Series 203 Variable Leak Installation
and Operating Instructions
1 Safety Hazards
2 Important Precautions
The Variable Leak is a carefully designed and manufactured variable
conductance device. With proper care and use it will give long and trouble
free service under the most extreme conditions. The following are important
precautions which must be observed at all times to prevent possible
irreparable damage or poor performance.
2.1 DO NOT remove the valve from its container until these instructions
have been read completely.
2.2 Always cover the ports with plastic cap plugs or rubber stoppers and
place the entire unit in a clean polyethylene bag whenever the Leak is
stored, shipped or not connected to the vacuum system. Do not use
cork stoppers or adhesive tape.
2.3 Carefully exclude dust, dirt, chips, moisture and other contaminants. A
liquid seal, formed from condensed vapors on the sealing surface, will
result in loss of leak control. Foreign or corrosive material will
permanently damage the sealing surfaces.
WARNING
Use of certain corrosive gases can cause gases to leak
through the sealed valve or into the atmosphere,
resulting in serious personal injury.
Before using a gas with the valve, check the gas for
compatibility with the following materials:
• Fine silver
• Type 304S ST
WARNING
Exceeding the maximum internal pressure specified
below can cause an explosion, resulting in property
damage or serious personal injury.
• Inlet pressure should never exceed 200 psig.
• For inlet pressures less than one atmosphere, connect the gas
source to either port.
• For gas pressures greater than one atmosphere, connect the gas
source to the center port.