SOR Explosion Proof Pressure Switch UL/CSA/ATEX User Manual
Page 4
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Form 316 (01.13) ©SOR Inc.
Calibration
Remove the set point adjustment compartment cover.
To increase the set point at which the switching element actuates, turn the hex adjusting
nut clockwise with a 3/4-inch open-end wrench.
Sight across the flat top of the adjusting nut to the calibration scale at the bottom of
the housing for an approximate set point. Use a 1/4% external pressure gauge to more
precisely calibrate the pressure switch.
Replace the set point adjustment compartment cover. The pressure switch can be
placed in service.
NOTE: The set point adjustment compartment is separate from the electrical compartment. The
set point may be changed without disconnecting electrical power.
ATEX Marking Information
For ATEX Certifi ed Models
Manufacturer’s
Registered Trademark
ATEX Listing
Information
Product Model
Identification
Serial Number
(First Two Numbers
Indicate Year of Manufacture)
Drawing 8513025
Thread Form
Information
Special Conditions for Safe Use
To minimize the risk of electrostatic discharge, clean only with a damp cloth.
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