88 Rockwell Automation Publication 20P-TG002B-EN-P - February 2018
Chapter 3 Part Replacement Procedures
20. Remove the screws and washers that secure each SCR module to the
heatsink and remove the SCR module from the drive.
Install the SCR Modules
Install the SCR modules in reverse order of removal.
• Use the following table to determine the proper tightening torque for
the SCR modules installed on the heatsink.
IMPORTANT Thermal grease must be applied to the bottom of each SCR module before
securing it to the heatsink.
230V AC Input 460V AC Input
Part Number Final Torque Part Number Final Torque
SK-20P-S7F48 2.5…4.0 N
•m (22…35.4 lb•in) SK-20P-S7F78 2.5…4.0 N•m (22…35.4 lb•in)
SK-20P-S7F49 4.5…5.5 N
•m (40…48.7 lb•in) SK-20P-S7F79 4.5…5.5 N•m (40…48.7 lb•in)
SK-20P-S7F42 4.5…5.5 N
•m (40…48.7 lb•in) SK-20P-S7F41 4.5…5.5 N•m (40…48.7 lb•in)
SK-20P-S727F 4.5…5.5 N
•m (40…48.7 lb•in) SK-20P-S737F 4.5…5.5 N•m (40…48.7 lb•in)
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