Calista Tools Perfecter PRO GRIP Owner's Manual & Styling Manual page 5

SERVICING OF DOUBLE-INSULATED APPLIANCES
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 qualified
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.
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