Lh20/1:9 Thermal Overload Circuit - ESAB LHF 405 PIPEWELD Service Manual

LH20/1:9 Thermal overload circuit
The circuit co--operates with NC thermal switches connected in series. Opening of
any of them (placed on the transfer or the rectifier) switches the V1 transistor on.
Closed the V1 transistor switches on the H1 indication lamp and disables thyristors
firing.
Edition 071024
- - 18 - -
smlhfpw1