Step 5: remove the field circuit board, Remove the field circuit board – Rockwell Automation 23P PowerFlex DC Stand-Alone Regulator (SAR) Bimetal Thermostat User Manual
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Rockwell Automation Publication 23P-IN007A-EN-P - June 2011
10. Remove the cooling vent mounting screws (4) on top of the stand-alone regulator,
and save for reassembly.
11. Disconnect the fan plug from the XV connector on the switching power supply
circuit board.
12. Remove the cooling vent and fan assembly.
13. Carefully slide the power interface circuit board and the switching power supply 
circuit board assembly out of the chassis.
Step 5: Remove the 
Field Circuit Board
1. Label and disconnect the plug at X3.
Cooling Vent Mounting 
Screws (4)
Tightening torque:
1.0 N•m (8.9 lb•in)
Fan plug XV connector 
(behind cooling vent)
IMPORTANT
The screws for the field circuit board are different lengths. Be sure to replace 
the correct length screw back to the correct fastener location when reinstalling 
the field circuit board.
Also, note the location of the mounting points for the transducer cable for 
reassembly.
Field Power Terminal 
Screws (4, long)
X3
Transducer 
Cable Mounting 
Screw (1, short)
Dual Diode Module 
Bus Screws
(3, medium)
Field SCR Module 
Bus Screws
(3, medium)
Stand-off
Ribbon Cable 
Removed from 
Hoop Harness
Note: Tightening 
torque for all screws:
2.5 N•m (22.0 lb•in)