98 YORK INTERNATIONAL
WARNING – BLACK PLASTIC MICRO BOARD COVER IS CONDUCTIVE
The earlier version, “rotary dial” type micropanel reciprocating chillers contained a
black plastic cover which fit over the Micro Board, and was secured in place by the
hardware on the four bat-handle toggle switches on the Micro Board. You should be
aware that these black plastic panels are coated inside with a conductive com-
pound. This is intended to be a barrier against RFI-EMI emissions.
Because of this conductive coating, you should treat this panel as if it were made of
metal. Do not place this cover inside the power panel of the chiller when doing
service. The coated surface could get against the chiller’s power lugs and cause a
short circuit. Even worse is that the plastic could melt and ignite, creating a fire
inside the power panel.
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