User Manual

Rockwell Automation Publication 20B-IN025B-EN-P - January 2011 79
Component Replacement Procedures Chapter 3
MOV Surge Suppressor -
AC Input Only
See Chapter 1 - Drive Components to locate the component detailed in these
instructions.
Remove Components
1. Read and follow the Safety Precautions on page 8 and Important Initial
Steps on page 10.
2. Perform Remove Main Control Panel on page 22
.
3. Perform Remove Stacking Panel on page 25
.
4. Locate the MOV Surge Suppressor assembly.
5. Note wire placement and connections. Disconnect the MOV ground wire
to transformer and the R, S, and T wires to the AC Busbars.
6. Remove the MOV mounting nut.
7. Remove the MOV assembly and properly discard.
Install Components
1. Install the new MOV assembly. Torque the MOV mounting nut to
2.9 N•m (26 lb•in).
2. Reconnect all wires and connectors for the MOV.
3. Torque the R, S, and T Phase power terminal block screws to 9.8 N•m (80
lb•in).
4. Reassemble remaining components in reverse order.
5. Replace all safety shields and enclosure covers before applying power to the
drive.
MOV