Return to Section
Return to Section TOC
Return to Section TOC
Return to Master
Return to Master TOC
Return to Master TOC
6.Using the 7/16" wrench, remove the two hex head capacitor screws located in the center of the switch board. Hold the board firmly as you remove the screws.
7.Carefully remove the switch board.
8.Clean the heat sink surfaces thoroughly to remove all the heat sink compound. (During machine operation, this compound helps conduct heat from the switch board to the heat sinks.
9.Apply a thin layer (.002") of Dow Corning 340 Heat Sink Compound (Lincoln E1868) to the mounting surfaces of the new switch board and to the capacitor terminals. DO NOT allow the compound to enter the mounting screw holes. It can distort the torque values.
10.Prepare to mount the new switch board on the heat sink by first lining up the mounting holes. Then press the switch board into place.
11.Insert each of the four socket head screws into the mounting holes. Thread them finger tight. The threads are soft
12.Insert each of the two hex head screws into the capacitor terminal holes. Thread them finger tight. Be careful not to
13.Torque both sets of screws in 10
CAUTION
Failure to connect the switch board leads correct- ly can result in damage to the Invertec STT machine when power is applied.
14.Reconnect all the leads to the switch board. Be sure each lead is connected to the correct terminal.
15.Perform the Test after Repair of Switch
Boards and/or Capacitors.
NOTE: Always make sure that the switch boards are changed in matched pairs. Never mix an old style switch board (different part number) with new style (new part number).
Return to Section TOC
Return to Master TOC
