Rockwell Automation 23P PowerFlex DC Stand-Alone Regulator (SAR) Bimetal Thermostat - Manual (Page 2)

2 Rockwell Automation Publication 23P-IN007A-EN-P - June 2011
What You Need to Do The list below is an overview of the steps needed to remove and replace the
bimetal thermostat. See each step for detailed procedures.
1.
Remove Power
2.
Remove the Covers
3.
Remove the Control Circuit Board
4.
Remove the Power Interface Circuit Board and Switching Power Supply
Circuit Board
5.
Remove the Field Circuit Board
6. Remove the Bimetal Thermostat
7.
Install the New Bimental Thermostat and Reassemble the SAR
8.
Document the Change
Step 1: Remove Power
Remove and lock-out all incoming power to the SAR.
IMPORTANT The SAR has many different cables, wires, and plugs with different
connections and routing. For ease of reassembly:
•
Make note of cable and wire routing between and within the different
circuit boards.
•
Label connectors and plugs with the name of the connection and
circuit board from where it was disconnected.
ATTENTION: Remove power before making or breaking cable
connections. When you remove or insert a cable connector with power
applied, an electrical arc may occur. An electrical arc can cause
personal injury or property damage by:
•
sending an erroneous signal to your system’s field devices, causing
unintended machine motion
•
causing an explosion in a hazardous environment
Electrical arcing causes excessive wear to contacts on both the module
and its mating connector. Worn contacts may create electrical resistance.
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