14.3.5. Replacing Rectifier / Heat Sink Assembly (A6)

• See also Service Instruction (JD5076-00)

Preparation:

• Shut down and lock out all power to ATevo.
• Remove safety shield.
• Disconnect the battery and dc load(s) from the DC Output Circuit Breaker (CB2+/-).
• Check with a voltmeter before proceeding.
• Make sure rectifier/heat sink assembly (A6) has cooled.

Removal of Existing Rectifier:

• Disconnect the ribbon cable and wires from Power Board (A2).
• Remove the two (2) bolts securing rectifier assembly on center of left side of enclosure between top and bottom vent perforations.
• Pull rectifier assembly (A6) straight out toward front of ATevo.
• Remove the four (4) screws that attach Power Board to assembly.
• Remove screw that attaches Filter Board (A7) to assembly.
• If an Auxiliary I/O Board (A4) is present, remove the four (4) screws that attach it to the assembly.
• Lift and remove all boards from the existing rectifier / heat sink assembly (A6).

Installation of New Rectifier:

• Plug removed boards onto new rectifier/heat sink assembly (A6).
• Make sure all spade connections on bottom of Power Board (A2) are correctly seated on new rectifier.
• Replace all board mounting screws.
• Insert new assembly into enclosure, making sure protrusions on heat sink drop into holes at back of enclosure.
• Install mounting bolts on left side of enclosure.
• Reconnect wires to rectifier/heat sink (A6) and Power Board.
• Replace safety shield and close front panel door.
• Restart ATevo.