ESAB MEK 4 Service Manual page 13

4b Voltage adjustment
Applies to MEK 4 with serial number 514 . . . . . . and above.
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Voltage adjustment, circuit board AP01 with article number 0486 205 882
When the MEK 4 is connected to a power unit with steplessly variable output
voltage, potentiometer RP02 on the front of the unit can be used to control the power
unit output voltage.
The +15 VB and 0 VB voltages are supplied by the power unit via connector XP01.
The voltage adjustment circuits are not galvanically isolated from the other circuits
at circuit board AP01.
The remote control unit for voltage control is connected to pins J, K, L, Z and Y in
connector XS13. A link must be fitted between pins Z and Y in order to activate the
unit.
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