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In a double-insulated appliance, two systems of insulation are provided instead of grounding. No
grounding means is provided on a double-insulated appliance, nor should a means for grounding be
added to the appliance. Servicing a double-insulated appliance requires extreme care and knowledge
of the system, and should be done only by qualied service personnel. Replacement parts for a double-
insulated appliance must be identical to the parts they replace. A double-insulated appliance is marked
with the words “DOUBLE INSULATION” or “DOUBLE INSULATED”. The symbol (square within a square)
may also be marked on the appliance.
SERVICING OF DOUBLE-INSULATED APPLIANCES
PERFECTER_IB_UK_ENG_V2_130507.indd 5 5/7/13 4:06 PM
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