SOR Direct or Remote Mount Explosion Proof UL/CSA/ATEX - Manual (Page 3)

Form 416 (01.13) ©SOR Inc. 3/8
Calibration
Electrical Connection
Ensure that wiring conforms to all applicable local and national electrical codes and install
unit(s) according to relevant national and local safety codes.
NOTE: FOR ATEX Certifi ed Models, Electrical conduit connection threads may be of non-ISO
thread form. Check the product nametag for relevant thread form information before
attempting to connect to the electrical conduit connection. In the event a fi tting is used,
check the adaptor body for thread size information.
Electrical power must be disconnected from explosion-proof models before
the cover is removed. Failure to do so could result in severe personal injury
or substatntial property damage.
Standard electrical connection is a terminal block. B-series is 6-place compression
type. The terminal block is marked: Common (C), Normally Open (NO), Normally
Closed (NC). If DPDT is specified, additional markings are: Common 2 (C-2),
Normally Open 2 (NO-2), and Normally Closed (NC-2).
Overtravel has been preset at the factory, i.e. the switching element assembly
has been precisely positioned in the housing for optimum performance. It
normally should not be changed in the fi eld. Should adjustment be necessary,
factory approved procedures must be closely followed. Any inadvertent move-
ment or replacement in the fi eld will degrade performance, void the warranty
and could render the device inoperative, unless factory approved procedures
are followed.
NOTE: The internal primary equipment ground (earth) screw must be used for the equipment
ground connection and the external supplemental ground screws are provided for safety and
compliance with specifi c code requirements.

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” open-end wrench.
The electrical compartment cover must remain sealed and the allen locking
screw tightened at all times to prevent removal of the cover while the
temperature switch is in service. Removal of the cover while the temperature
switch is in service in a hazardous location could result in severe personal
injury or substantial property damage.

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 regulated thermal bath to more precisely
calibrate the temperature switch.

Replace the set point adjustment compartment cover.
NOTE: The set point adjustment compartment is separate from the electrical compartment. The
set point may be changed without disconnecting electrical power.