Adixen ASM 142, Руководство пользователя

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E 530
Valves installation and maintenance
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Precautions Whenever handling valves, take the necessary precautions not to
pollute the vacuum circuit and, to keep the valve and valve seat free
of particles which create leaks.
The valve, particularly the sealing surfaces, should only be handled
with clean, lint-free gloves.
It should only be installed in a clean system.
Dismantling For the valve assembly/disassembly, the unit must be stopped and
disconnected from line power.
If ”piston” O-rings are installed on the valve, use a gasket extractor to
remove it. Take care not to damage the sealing surface.
Immediately protect the valve inlet if it is to stay open for a long time.
Cleaning

Clean the surfaces of the different parts with
alcohol.
For the Normally Open type Minisol valves (NO),
O-rings are present on both sides of the valve.

Improve the cleaning by blowing off the parts with
dry filtered air, particularly the O-ring grooves.
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Seal preparation

Place the ”piston” O-rings.
A slight greasing of these rings is possible.
Grease quantity should be limited to avoid
helium retention and make assembly easier.

Put a drop of grease on
your fore-finger.

Spread the grease out between your
thumb and fore-finger.

Lay the grease on the ring by turning it
between your fingers.
The ring should have a shiny aspect with
no excess.