Rank: New forum user 
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Can you help? Do you need to re-ce mark a piece of machinery if you adapt it by changing its interlocking guard or fixed guard for another type of guard. There would be no other modification in size or shape but a change of the guarding fixation. The machinery itself in relatively new. AG
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Rank: Super forum user 
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The declaration of conformity as applied by the original supplier will now be null and void. You would be required to resubmit /retest/ recertify for declaration of conformance with Machinery Directive.
Personally, I would have discussed the issue with the OEM in the first instance if I was contemplating a modification.
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Rank: Forum user
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Depends. We need more detail as to the type of machine, the nature of the hazards, what if any standards you've used and what changes you've made to the guarding. In general though, a change to the way a protective function is implemented will need you to create a new Declaration of Conformity.
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Rank: New forum user
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thanks for your help - the guard is a perspect guard that is already interlocked but when it opens it does not open to 90 degrees (due to another part of the machine) and so makes it difficult to sort out any blockages and maintenance issues. This part of the machine is a sorter for lids in a food preparation process. We want to make the guard half the size ie cut it in 2 and re-interlock it. Would that need to be declared as it is essentially the same?
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Rank: Forum user
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Alison,
here's my take on it.
Firstly the CE mark does not ensure safety, only that the machine has been built to a minimum standard and can be traded within the European community. If the machine is now yours, and you do not intend to sell it on, ie you are not an agent or importer, then you can do whatever you like (within reason) to the machine so long as you ensure it is safe to use. So long as you can demonstrate that the addition or modification is going to conform to the relevant BS for guarding and access to machinery (think its BSEN953?) then you should be OK.
You may want to speak to the supplier / manufacturer just to conform that this mod won't affect any warranty etc? You never know, they may even incorporate your mod in their future designs?
Holmezy
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Rank: Forum user 
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I think the CE mark only shows that it is safe by design and the things they say it can do it does. holmezy information is good advice though, you may also wish to speak to your insurer about the changes / modifications.
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Rank: New forum user
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Thanks for all your help - much appreciated.
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