Rockwell Automation 1414-CLMxxxxx_CLNxxxxx Low-limit Temperature Switch - Manual (Page 3)

Low-limit Temperature Switch 3
Publication 1414-IN009A-EN-P - October 2005
Wire and Connect the Low-limit Temperature Switch
All wiring should comply with national and local electrical codes. An opening for
installing a connector for 1/2” conduit is provided in the bottom of the controller
case. Recommended wire size is 10 to 14 AWG solid copper wire. Use screwdriver
to loosen terminal screws. Strip wire ends 3/8” and insert into box connectors on
the switch block. Securely retighten terminal screws. For circuit testing, the DPDT
switches can be manually activated by using a screw driver to operate the test lever
located on the bottom portion of the controller scaleplate.
Setpoint Adjustment
The setpoint shown on the controller scaleplate is the temperature at which switch
contacts 21 to 24, 11 to 14 (DPDT) will OPEN on a fall in sensed temperature.
To change the setpoint, use a screwdriver or wrench to turn the range adjustment
screw located at the top of the spring housing. Clockwise rotation decreases the
controller setpoint. Counterclockwise rotation increases the setpoint.
Manual Reset Models
On a temperature fall to setpoint, switch contacts 21 to 24, 11 to 14 (DPDT) open
and contacts 21 to 22, 11 to 12 (DPDT) close.
The switch remains ‘locked’ in this position until the controller is manually reset by
depressing the reset button located in the top of the controller case.
The controller cannot be manually reset until the sensed temperature is at least 5ºF
(3ºC) above setpoint.
Install capillary in
horizontal pattern only
Switch action on decrese in temperature
(Contacts 11 to 14 and 21 to 24 Opens;
Contacts 11 to 12 and 21 to 22 Closes)