> -----Original Message-----
> From: Israel Yeshurun
> Subject: Compressed Air. Pneumatics, Safety requirements
>
>
> Dear Group Members,
>
> I would appreciate comments to the following:
>
> General: In some equipment, Compressed Air is used to
> energize mechanical parts (in addition to electrical power used in the
> equipment) safety Interlocking of those mechanical parts, can be
> performed by draining of the pressured air or by equalizing air pressure
> on both sides of the operating pistons, or by ?? The compressed air can
> be supplied from outside of the machine or be produced inside the machine
> by intended internal air compressor. This may rise the following
> questions:
>
> 1) For Low Voltage Directive Equipment, utilizing compressed air,
> are there any specific Safety requirements? I looked in UL1950, EN60950
> but could not find such.
>
> 2) Regarding Machinery Directive products: Are there specific
> requirements? intended standards ?
>
> Any response will be appreciated,
>
> Regards, Israel Yeshurun,
> Compliance Engineer.
---------
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