Maintaining

the PTC-860

©Operating conditions
Each of the PTC-860 optical models can be operated at
temperatures between –20 degrees F (–29 degrees C) and 120
degrees F (49 degrees C).
PTC-860
The PTC-860 unit is designed to operate in environments tha t
are normally free of dust, dirt, and moisture.
PTC-860ES
The PTC-860ES is designed to work in rugged environments. It
has been specially sealed to resist dust, dirt, and moisture.
CAUTION! Although the PTC-860ES unit is designed to
operate in rugged environments, the available accessories
are not. Do not operate a PTC-860ES with any attached
accessories in excessively dusty, dirty, or moist conditions.
PTC-860NI
The PTC-860NI is designed for use in hazardous locations.
(Refer to the “Use in hazardous locations” section on page 9 for
information on the locations in which the unit is a pproved for
use.)
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