ESAB LTR 160, Service Manual

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cltr0de2
cmha2p25
5V
0V
Gate pulses as measured across a dummy gate load on circuit board AP01,
between terminals J1 and J2.
11 Thermal overload switch
Thermal overload sensor ST01 is fitted in the main transformer (TC02) winding.
LTR 160: opens at 130
_
C and resets (closes) at 100
_
C.
LTR 200: opens at 150
_
C and resets (closes) at 130
_
C.
Operation of the thermal overload switch interrupts the gate pulses to the transistor
boards, and is indicated by LED V05.