Miele DGC 6660 Operating And Installation Instructions page 14

Warning and Safety instructions
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When using a small electrical appliance, e.g. a hand-held blender,
near the steam oven, care should be taken that the cable of the
appliance cannot get trapped by the steam oven door. The insulation
on the cable could become damaged, giving rise to an electric shock
hazard.
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Do not operate the steam oven without the lamp cover. Steam
could could reach electrical components and cause a short circuit.
Steam could also damage the electrical components.
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