Owner manual

Rockwell Automation Publication PFLEX-IN029B-EN-P - August 2014 33

PowerFlex 700H and 700S Drives - Frame 9 Procedures Chapter 1

Main AC Fan Inverter Circuit Board Assembly (20-VB00299) Removal

and Installation

See Checking the Main AC Fan Inverter Circuit Board Diagnostic LEDs on page

268

for test procedures used to determine if the circuit board requires

replacement.

Follow these steps to replace the main AC fan inverter circuit board.

1. Review the General Precautions on page 17

2. Remove power from the drive. See Remove Power from the Drive on page

3. Remove the lower protective cover from the drive. See Remove the Lower

Protective Cover on page 24

4. Remove the main AC fan inverter capacitor bracket. See Removing the

Main Fan Inverter Capacitor Bracket on page 25

5. Reach into the fan inverter compartment and disconnect the isolation

transformer wires from X4 and X5 on the fan inverter board.

6. Disconnect the wires from connector X8 on the fan inverter board.

7. Disconnect the wires from connector X2 on the fan inverter board. Retain

these wires for reuse.

IMPORTANT

Mark the existing isolation transformer wires so that you can identify

them later in this procedure.