More trouble in the world of Laboratory Equipment (red headed step child) and 
the Machinery Directive.

I've had TUV offices in 3 Asian countries and a customer in Australia tell us 
our products (Laboratory Equipment) must have an AC Lock Out Device, an 
Emergency Stop Switch, and a Light Tower because "Laboratory Equipment now 
falls under the Machinery Directive".

They are telling us that any AC product requires a lock out device. What?

On one instrument we make, the only moving part is a small dc motor with a wire 
brush similar to an electric tooth brush that cleans an electrical contact 
between analysis. You can stop this motor by hand without injury. This motor is 
also behind a double interlock door (due to an electrical hazard), but yet they 
say we must have an E-Stop switch and Light Tower.

I'm not familiar with the Light Towers. I've seen them on Large Production 
Machines but what purpose do they serve on laboratory equipment no larger that 
an upright piano? I understood they are only required to show the operational 
status of a machine if not knowing the status could cause a hazard or injury. 
Is there more to it? I don't see why it would be needed if there are no 
accessible hazards.

I'm getting the feeling that some believe these things are required just 
because laboratory falls under the machinery directive and not for any other 
reason, which seems silly to me. In the past, the machinery directive mainly 
covered the safety of Production Machines which generally require these safety 
components.

Can you imagine your next spectrum analyzer having an E-Stop switch because of 
the cooling fan or the motorized CD drive door? Is this what it is coming to?

Why or why don't you large powerful laboratory equipment manufacturers fight 
for the official recognition of "Laboratory Equipment" and have our own 
Directives, Standards, and requirements and not have to wade through all the 
machinery Directive nonsense?  What sense is the IEC/EN 61010-1 standard if 
they are not harmonized to the MD? Why are we being forced to apply the IEC/EN 
60204-1 to Laboratory Equipment where 90% of the requirements don't or 
shouldn't apply?

Sorry for my rant. It's been a long week. I'm just a small powerless voice 
trying to sell safe products to a crazy crazy world..

The Other Brian

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