Has this ever happened to you?

We manufacture analysis instrumentation equipment.  The part we make is usually
part of a complex system made up of other CE marked equipment from many
different suppliers.  Sometimes when we have a system tested for CE (emissions
and immunity), one of the other companies pieces of equipment will cause the
"system" to fail.  

I have seen some test labs identify the failing piece of equipment, write it up
in the report and say it is not our problem because our equipment passes AND it
is not contributing to the failure.  But, what if we are selling the "system"
including the CE Marked products that failed when we had it tested?

It doesn't always do us much good to go to the manufacturer of the failing
equipment because they will usually say that it passes when they tests it.  If
we were a PC manufacturer and had trouble with a printer or a monitor we could
just find another one, but the equipment in our systems are more unique.  There
may only be 1 or 2 manufacturers of such a device and we don't have much of a
choice.

So here is my question.  Can we sell a "system" that includes a CE marked
peripheral that we have no design control over, that fails when WE have it
tested?

Please advise and Thank you in advance.
Brian Kunde
LECO Corp.






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