Servicing Of Double Insulated Products - Singer 1234 Instruction Manual

The machine must only be used with foot control of type KD-1902, FC-1902 (110-120V area)/
KD-2902, FC-2902A, FC-2902D (220-240V area) manufactured by ZHEJIANG FOUNDER
MOTOR CORPORATION LTD. (China)/ 4C-316B (110-125V area)/ 4C-326G (230V area)
manufactured by Wakaho Electric Ind. Co., Ltd. (Vietnam)

SERVICING OF DOUBLE INSULATED PRODUCTS

In a double-insulated product, two systems of insulation are provided instead of grounding. No
ground means is provided on a double-insulated product, nor should a means for grounding be
added to the product. Servicing of a double-insulated product requires extreme care and
knowledge of the system and should be done only by qualified service personnel.
Replacement parts for a double-insulated product must be identical to those parts in the
product. A double-insulated product is marked with the words "DOUBLE INSULATION" or
"DOUBLE INSULATED".