P3-P4 Shorting Plug Kit - P/N 37514

These jumper plugs must be plugged into Migmaster 251s Main Control PC Board Assembly, P/N 38111, when

options are not installed. Operating the Migmaster 251 without jumper plug or option connected to P3 and P4

receptacles of the PC board can damage the circuitry. Therefore, connect the small 6-pin jumper plug to P4 of the

PC board if preflow/postflow option is not installed; connect the large 12-pin jumper plug to P3 if spool gun control

option is not installed.

NOTE: The same P/N 38111 PC board is used in the 251cv Power Source. The jumper plugs are

not required for